• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
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    • 专利摘要:
    Equipment for the construction of a wastewater treatment plant. The invention relates to an equipment intended for the realization of a wastewater treatment station, suitable for the realization of a wastewater treatment station inside a dwelling, said equipment comprising at least three tanks and each comprising a manhole (2) at its upper part for access to the tank. According to the invention, the tanks are in one piece, or in two parts, each tank or tank parts having dimensions such as to be able to handle the tank part through standard doors of the dwelling.
    公开号:BE1021178B1
    申请号:E2014/0417
    申请日:2014-06-02
    公开日:2015-05-26
    发明作者:Laurent Jeanne
    申请人:Laurent Jeanne；
    IPC主号:
    专利说明:

    Equipment for the realization of a wastewater treatment plant. The invention relates to equipment comprising at least three tanks, intended to be assembled to form a wastewater treatment plant, in particular for domestic use. The invention also relates to a method of laying a wastewater treatment plant, inside a house, by means of the equipment according to the invention.
    The field of the invention is that of non-collective sanitation. In this field, there are known treatment facilities for the purification of domestic wastewater for discharge to the hydraulic environment or surface infiltration of treated water in the soil.
    Typically, a wastewater treatment plant treats domestic wastewater consisting of sewage (toilets, urinals) and greywater (sinks, showers, baths, dishwashers, washing machines, etc.) and works, thanks to a purification process (biological filtration, activated sludge, SBR "Sequencing Batch Reactor", fixed cultures, fluidized bed, membrane bioreactor, etc).
    In the field of non-collective sanitation, it is thus known stations that include a first primary settling tank. This primary settling separates the decantable suspended solids, floating suspended solids, oils and other emulsions and fats from the effluents before they flow to a biological treatment tank. This step is preprocessing.
    The biological treatment tank may comprise an aerator for supplying oxygen to the biological sludge or bacteria present in the tank, for their respiration and development, in order to allow the degradation of the organic pollution and possibly the nitrogen pollution by these same bacteria.
    The effluents thus treated and the biological sludge finally flow to a secondary settling tank, where the sludge is separated from the water, before the rejection of the treated and clarified water in the natural environment.
    This type of wastewater treatment plant is used for the sanitation of domestic wastewater of houses that can not connect to a public sewage collection network (collective sanitation), the station being then conventionally buried. in the undeveloped land of the property, with access hatches flush with the ground.
    For example, document FR 2 966 143 discloses a compact, cylindrical, coaxial compartment wastewater treatment plant intended for the purification of domestic wastewater, the compartments comprising a pre-decanter, a biological reactor and a reactor. post-settler. Such a wastewater treatment plant is made of a material such as steel and is intended to be buried.
    However, such equipment has disadvantages. Indeed it is not easy to move and install such a station.
    Given its weight, it is mandatory to use handling equipment to set up such a station.
    Given its size, it is mandatory to have sufficient access for the passage of such a station.
    Moreover, in the case where the house does not have land, it is not possible to install such a station.
    The purpose of the present invention is to overcome the aforementioned drawbacks by providing equipment for easy and quick installation of the equipment, by force of man.
    More particularly, the objective of the present invention is to provide equipment of limited size and special characteristics that can be installed within a home, not having sufficient access for conventional equipment or not including ground.
    Another object of the present invention is to provide such equipment that is inexpensive and simple to implement.
    These objectives, as well as others which will appear more clearly later, are achieved according to the invention with the aid of equipment intended for the realization of a wastewater treatment station, suitable for the realization of a wastewater treatment plant inside a dwelling, the equipment comprising at least three tanks, each of which being equipped with a manhole at their upper part for access to the tank, said at least three tanks comprising: - one or more primary settling tanks, each comprising an inlet and an outlet, - one or more biological treatment tanks, comprising at least one aerator intended to be immersed and to aerate the biological sludge and the effluents, and - a secondary settling tank, comprising an inlet and an outlet.
    According to the invention, said at least three tanks are intended to be contiguous, preferably according to their width, and said inlets and outlets of said tanks being intended to be interconnected by means of pipes of said equipment so that the effluents pass successively. the primary settling tank (s), the biological treatment tank (s) and the secondary settling tank (s).
    The tanks are preferably made of plastic synthetic materials such as rotomolded or blown polyethylene, polypropylene, polycarbonate, resin reinforced with glass fibers, etc.
    Preferably, said at least three tanks are parallelepipedal, each tank preferably having a height greater than the length and the width.
    According to the invention, each of the at least three tanks is in one piece and has dimensions such that it can handle the tank through standard doors. Alternatively the envelope of each of said at least three tanks is composed of two distinct parts, in particular two half-shells, independently manipulable, intended to be connected in a sealed manner to form the sealed casing of the tank, each of the two parts of tank having dimensions such that it can handle the tank part through standard doors. For example, the standard door dimensions of a home are 204 cm high and 93 cm wide. According to one embodiment, said at least three tanks or tank parts can each pass doors of dimensions 204 cm in height and 83 cm in width, or 204 cm and 73 cm in width.
    According to one embodiment, the height of each of said tanks or parts of the tank is between 140 cm and 200 cm, and more preferably between 160 cm and 180 cm, the length of each of said vats or tank parts being between 100 cm. and 150 cm, and the width of each of said vats or vessel parts being between 60 cm and 90 cm.
    Preferably, in order to be able to handle the vats or manhole parts, each of the at least three vats or parts of vats has a weight of less than 90 kg, and preferably less than 70 kg such that approximately 65 kg . For this purpose, the thickness of the walls of the tanks may be, on average, less than 10 mm: these tanks will then undergo a deformation of their side walls under the pressure of the water contained in the tank.
    To limit this deformation, each of said at least three tanks may comprise peripheral grooves, including regularly spaced all or part of the height of each of said tanks, to stiffen their structure.
    According to one embodiment, the equipment may comprise holding means intended to constrain or at least limit the outward deformation of the side walls of said at least three tanks, by encircling said tanks. These holding means are preferably received in the peripheral grooves of the tanks.
    According to a first alternative, said holding means may comprise a plurality of pairs of bars each associated with a pair of tie rods, each pair of bars and each pair of corresponding tie rods being intended to encircle said tanks, individually, said bars being intended to run. in said groove of one of the tanks, according to the length of the tank, the tie rods maintaining the spacing of the two bars, intended to run in the same groove along the width of the tank.
    According to another alternative, the holding means may comprise a plurality of pairs of bars each associated with a pair of cables, each pair of bars and pairs of corresponding cables being intended to encircle all of said at least three tanks, the busbars the same pair being intended to run in the throats of the two most extreme tanks of the assembly, according to the length of the tanks, said cables being intended to run along the width of the tanks, along the grooves of the corresponding tanks, the cables now the spacing between the bars.
    According to one embodiment, the outlet of said primary settling tank or at least one of the two primary settling tanks comprises a device, such as an overflow, defining the level of the effluents in said primary settling tank, the inlet of the primary settling tank or at least one of the two primary settling tanks being intended to be submerged, opening at a level below that of the level defined by said device and preferably at a level below the level at which opens the immersed outlet in said primary settling tank.
    According to one embodiment, the mouths of the inlet and outlet of said or each biological treatment tank are disposed at two opposite corners of the biological treatment tank, along the diagonal of the tank.
    According to one embodiment, said outlet of said primary settling tank, intended to be adjacent to said biological treatment tank, comprises prefiltration means such as a brush filter.
    According to one embodiment, said biological treatment tank comprises a support lining for the bacteria.
    According to one embodiment, the packing is of the fluidized bed type, and comprises a plurality of elements intended to be stirred by said at least one aerator.
    According to one embodiment, said at least one aerator comprises a single aerator centered on the median axes of the biological treatment tank and arranged in the length direction of the biological treatment tank.
    According to one embodiment, the outlet of the secondary settling tank comprises a device, such as an overflow, defining the level of the water in the tank, said inlet of said secondary settling tank comprises two pipes symmetrical with respect to the median plane. transverse of the tank, capable of splitting the incoming flow, extending in the vicinity of one of the side walls of the tank and opening at a level less than that of the outlet mouth of said secondary settling tank, said two pipes opening respectively in the vicinity of the two walls at the longitudinal ends of the tank, said outlet being disposed on the opposite side wall of the tank, at a central zone of the side wall.
    According to one embodiment, said secondary settling tank comprises a sludge extraction pump and an inclined bottom for collecting the sludge towards said pump.
    According to one embodiment, said inclined bottom comprises at least one element made of flexible, removable material, the or each of said elements comprising two inclined lateral wings, and a middle part, the or each of said elements being each intended to be inserted through the hole. man of said secondary settling tank by elastically deforming, the or each of said elements taking their shape and automatically blocking once arranged at the bottom of said tank.
    According to one embodiment, the middle part of the or each of said elements at the bottom of the tank, is intended to receive at least one sludge extraction pump, said at least one sludge extraction pump for maintaining said inclined bottom in place. The invention also relates to a wastewater treatment plant resulting from the assembly of the equipment according to the invention, said at least three tanks being preferably contiguous by their side walls, depending on the width of the tanks, said treatment station wastewater comprising an inlet for the effluents and an outlet for the clarified water.
    According to a preferred embodiment, said holding means encircle the tanks. The invention also relates to a method for laying a wastewater treatment plant inside a dwelling by means of equipment according to the invention for which each of the tanks is in one piece and in which: each of the at least three tanks of the equipment is handled, independently, in an interior part of the house, - said at least three tanks are joined, - said tanks are hydraulically connected to each other by means of pipes of said equipment in such a way the effluents pass successively through the primary settling tank (s), the biological treatment tank (s) and the secondary settling tank; optionally, the holding means are arranged around the at least three tanks, in particular at the peripheral grooves, - connect the raw water descent pipe of the house to the wastewater treatment plant through the From the tank, connect the outlet pipe of the secondary settling tank to the water drainage pipe of the house. The invention also relates to a method for laying a wastewater treatment plant inside a dwelling by means of equipment according to the invention for which each of the tanks is in two distinct, independently manipulable parts, and in which: - one handles each of the two parts of said at least three tanks of the equipment, independently, in an interior part of the house, in particular through the doors of the house, - one tightly assembled, for each said at least three tanks of equipment, the two tank parts, in order to constitute the sealed casing of the tank, - said at least three tanks are joined, - said tanks are hydraulically connected to each other by means of pipes of said equipment in such a way that the effluents successively pass through the primary settling tank or tanks, the biological treatment tank or tanks and the secondary settling tank. - Possibly there are the holding means around said at least three tanks, in particular at the peripheral grooves, - is connected the downcomer of raw water from the house to the wastewater treatment plant through the entrance of the tank, - the outlet pipe of the secondary settling tank is connected to the drainage pipe of the house. Other features and advantages of the invention will appear more clearly on reading the following description of a particular embodiment of the invention, given as a simple illustrative and nonlimiting example, and the appended drawings, among which: FIG. 1 is a plan view, in transparency, of the equipment according to the invention; - Figure 2 is a sectional view of the equipment according to the invention according to section A-A as shown in Figure 1; - Figure 3 is a sectional view of the equipment according to the invention according to section B-B as shown in Figure 1; - Figure 4 is a sectional view of the secondary settling tank in section C-C as shown in Figure 1; FIG. 5 is a sectional view of the biological treatment tank of the equipment according to section D-D as illustrated in FIG. 1; - Figure 6 is a schematic top view illustrating an embodiment of said holding means comprising bars and tie rods; FIG. 7 is a diagrammatic view from above illustrating a second embodiment of said holding means comprising bars and cables; FIG. 8 is a schematic view of a device other than a simple overflow, used to define the level of the liquids in the tank, between a low level and a high level.
    As previously mentioned, the general principle of the invention is therefore based on the implementation of an equipment 1 intended for the realization of a wastewater treatment plant comprising at least three tanks, preferably parallelepipedic tanks, each tank having preferably a height greater than the length and the width.
    Each of the tanks preferably has a manhole 2 at its upper part for access to the tank, said at least three tanks comprising: - one or more tanks 3,3 'of primary settling, each comprising an inlet 30, 30 'and an outlet 31, 31' preferably arranged in such a way that the effluents preferably circulate in the direction of the length of the tank 3,3 ', - one or more tanks 4 of biological treatment, comprising at least an aerator 42 intended to be immersed and to aerate biological sludge and effluents, and - a secondary settling tank 5, comprising an inlet 50 and an outlet 51.
    According to the invention, said at least three tanks 3, 3 ', 4, 5 are intended to be contiguous, preferably by their side walls as illustrated in Figure 1. The inputs and outputs of the tanks are intended to be connected between them by means of pipes 80, 81, 82 so that the effluents successively pass through the one or two tanks 3.3 'of primary settling, or the tanks 4 of biological treatment and the secondary settling tank 5.
    Preferably, said at least three tanks are contiguous along the direction of the width of the tanks: the length of the wastewater treatment plant, once produced, then corresponds substantially to the sum of the widths of the tanks 3, 3 ', 4, 5; - The width of the wastewater treatment plant then substantially corresponds to the length of the tanks 3, 3 ', 4, 5.
    The wastewater treatment plant thus produced is compact.
    Advantageously, according to the invention each of said tanks is in one piece has dimensions such that can handle each of the tanks through standard doors. For example, the size of standard doors is 204 cm high and 93 cm wide. According to one embodiment, each of the tanks 3, 3 ', 4, 5 can pass doors of 204 cm in height and 83 cm in width, or 204 cm in height and 73 cm in width.
    Alternatively, according to the invention, the sealed envelope of each of said at least three tanks is composed of two distinct parts, independently manipulable / transportable, in particular two half-shells. These two tank parts are intended to be connected in a sealed manner to form said tank, each of the two tank parts having dimensions so as to be able to handle the tank part through standard doors. According to this last embodiment, each tank portion is intended to be transported through the doors of the house and to the room where the wastewater treatment plant is to be assembled. The envelope of each tank is then reconstituted by sealingly joining the two tank parts. For example the peripheral walls of the two parts can be glued, welded, or fretted by gluing strips of glass fibers to the polyester resin.
    For example, in the case where the tanks are in one piece, the height of each of the tanks is between 140 cm and 200 cm, and more preferably between 160 cm and 180 cm (ie 170 cm), the length of each said tanks being between 100 cm and 150 cm (ie 125 cm), and the width of each of said tanks being between 60 cm and 90 cm (ie 72 cm). Advantageously, these dimensions make it possible to pass the doors of standard size of dwellings. In the case where each of the tanks is in two parts, independently manipulable, each of the tank parts can meet the same dimensional constraints.
    The capacity of each of the tanks can be between 1.0 m3 and 1.7 m3 such that for example for the tanks 3, 3 'a capacity of 1.15 m3 and for the tanks 4, 5' a capacity of 1.10 m3 .
    A limited height also facilitates the maintenance of the tanks, the manhole 2 can be opened easily without being impeded by the ceiling height of the room in which the equipment is installed 1.
    The tanks 3, 3 ', 4 and 5 can be made of a plastic material such as polyethylene (PE) so as to facilitate their easy handling by offering a relatively low weight, preferably less than 90 kg, and preferably less than 70 kg, for example about 65 kg. Such tanks will be easily moved by two men. These tanks can be manufactured by rotational molding.
    In the case where each of the tanks is in two parts, independently manipulable, each of the tank parts can meet the same weight constraints.
    In the case where the tank body is in two parts, the tanks may be preferably resin and the two parts of the tank can be sealed together by laying a strip of resin.
    The tanks are preferably made of plastic synthetic materials such as rotomolded or blown polyethylene, polypropylene, polycarbonate, resin reinforced with glass fibers, etc.
    The wall of the tanks is thus preferably less than 10 mm thick such as for example 7 mm to limit the weight of the tank and thus facilitate their porting.
    According to a particular aspect of the invention, each of the tanks 3, 3 ', 4 and 5 comprises peripheral grooves 8, visible in FIGS. 1 and 3, regularly spaced over all or part of the height of each of the tanks in such a way as to to stiffen the structure of the tanks. The equipment may also comprise holding means 6 or 7 intended to constrain or even strongly limit the outward deformation of the side walls of said at least three tanks, by encircling said tanks. Preferably, these means will encircle said tanks, as a whole (see Figure 7) or individually (see Figure 6), at the peripheral grooves 8 of the tanks, preferably on several levels of height of the tanks.
    According to a first embodiment illustrated in FIG. 6, said holding means 6 can comprise a plurality of pairs of bars 61, 62 each associated with a pair of tie rods 63, 64. Each pair of bars and each pair of corresponding tie rods are intended to encircle said tanks, individually. Said bars 61, 62 such as U-shaped profiles are intended to run in said groove of one of the tanks, on both sides of the tank, depending on the length of the tank, the tie rods 63, 64 maintaining the spacing of the two bars, intended to run across the width of the tank, on the other two sides of the tank. Adjusting the spacing between the two bars of the same pair can be obtained by screwing, the ends of the tie rods being threaded to cooperate with clamping nuts resting on the bars.
    According to another alternative illustrated in FIG. 7, the holding means 6 may comprise a plurality of pairs of bars 71, 72 associated with a pair of cables 73, 74. Each pair of bars 71,72 and 73,74 corresponding cable pair are intended to encircle all of said at least three tanks. The bars of the same pair are intended to run in the throats of the two most extreme tanks of the set, according to the length of the tanks. Said cables 73, 74 are intended to run along the width of the tanks, along the grooves of the corresponding tanks, the cables maintaining the spacing between the bars. The adjustment of the spacing between the two bars of the same pair is obtained by tensioning the cables, for example by means of tensioners 75, 76.
    According to a particular embodiment of the invention, the equipment comprises two tanks 3, 3 'for the primary decantation connected in series, by means of a horizontal pipe 80 connecting the outlet 31 of the first tank 3 and the inlet 30 'of the second tank 3', so as to optimize the settling. Advantageously, the first primary settling tank 3 makes it possible to break the hydraulic flow of the incoming effluents and to preserve the second tank 3 'of primary settling of the eddies caused by the incoming effluents, thus promoting better retention of the sludge in the first tank 3 and in the second tank 3 'of primary settling.
    As can be seen in FIGS. 2 and 3, the inlet and the outlet of the primary settling tanks 3 and 3 'are formed by means of a pipe, made of PVC for example, immersed and immersed vertically within the tank, the inlet 30 of the first primary settling tank being connected to a pipe responsible for receiving the effluents of the dwelling.
    The level of the effluents in the two tanks 3 and 3 'is defined by at least one device S, S', such as an overflow, and in particular according to the example at the level of the pipes 80, 81.
    The mouth of the inlet 30 of the primary settling tank 3 and the outlet 31 of the primary settling tank are arranged close to the side walls of the tank, as can be seen in FIG. 1. Such an arrangement has the advantage of provide a settling path as long as possible (depending on the length of the tank) and allows good retention of sludge within the tank 3 primary settling.
    The mouth of the inlet 30 'of the second primary settling tank 3' is submerged and preferably advantageously arranged at a level below the level of the outlet mouth 31 'of the second primary settling tank 3' in such a way as to optimize sludge retention. For example, the inlet mouth 30 'of the second tank 3' is located 50 cm below the level of the effluents while the level of the outlet mouth 31 'is located only 20 cm below the level of the effluents . Such an arrangement forces the effluent to rise from the inlet mouth 31 'to the outlet mouth 31', thus limiting the rate of non-decanted particles escaping through the outlet 31 '. The inlet 30 'and the outlet 31' of the second primary settling tank 3 'are, as for the first tank, located near the side walls of the tank so as to provide a settling path along the length of the tank. tank 3 '(see Figure 1).
    According to a particular embodiment of the invention, the outlet 31 'of the second primary settling tank, adjacent to the biological treatment tank, comprises prefiltration means such as a brush prefilter for retaining the floating bodies.
    Such prefiltration means have the advantage of being easily manipulated during a maintenance / cleaning operation. These pre-filtration means make it possible, when the biological treatment tank 4 is of the fluidized bed type, to retain the fluidized bed type packing inside the biological treatment tank 4.
    The outlet 31 of the first primary settling tank 3 is connected to the inlet 30 'of the second primary settling tank 3' by means of a horizontal pipe 80, made of PVC, for example, the pipe 80 passing through the longitudinal walls of the tanks 3 and 3 'through an orifice provided for this purpose and comprising sealing means disposed at each orifice of each vessel. The equipment also comprises said at least one biological treatment tank 4. This tank 4 comprises said at least one aerator 42 intended to be immersed in the lower part of the tank and to aerate the effluents and biological sludge in the tank.
    According to a non-illustrated embodiment, the biological treatment tank 4 may not comprise internal packing, bacteria support.
    According to another particular embodiment of the invention, the biological treatment tank 4 comprises a lining 9, a development support for bacteria, shown schematically in FIG. 3 for the sake of visibility. The lining can be arranged fixed (not shown) within the tank, a technical floor being disposed above the aerator or aerators 42 so as to protect them from the lining, and the support bars disposed on the walls of the tank 4 in the upper part so as to prevent the lining from rising.
    In the case of a fixed lining, it may be envisaged to have several aerators 42 under the lining in such a way as to ensure homogeneous diffusion of the air through the lining.
    According to another embodiment illustrated in FIG. 3, the packing 9 is of the fluidized bed type, and comprises a plurality of elements intended to be stirred by at least one aerator 42. The elements of the packing 9 are movable, a density close to 1, especially between 0.95 and 1 so as to be able to circulate throughout the volume of the tank when stirred by the bubbles of the aerator 42. When the aerator is at rest, the movable elements of the lining 9 are grouped in part, occupying for example the upper half of the volume of water of the biological treatment tank 4.
    In particular, a packing 9 of the fluidized bed type has the advantage of facilitating the maintenance of the equipment, the operations for removing the packing being able to be carried out by means of a suction line of a water-curtain type vehicle. Such a fluidized bed treatment also makes it possible to obtain a more homogeneous and stable biological treatment.
    Fluidized packing also promotes nitrification-denitrification which is important for good wastewater treatment.
    According to the embodiment illustrated in FIG. 3, the aerator 42 is centered on the median axes of the biological treatment tank 4 and arranged along the length of the biological treatment tank 4, so as to create a substantial mixing of the lining 9.
    According to a particular embodiment of the invention, the level of the inlet 40 of the biological treatment tank 4 is greater than the level of the outlet 41 of the biological treatment tank 4, the outlet mouth 41 being intended to be immersed and the inlet 40 being for example positioned above the level of the effluents present in the tank 4 of biological treatment. The level of the effluents in the biological treatment tank 4 is defined by a device S "such as an overflow, in particular arranged at the line marked 82.
    According to one embodiment of the invention, the inlet 40 and the outlet 41 of the biological treatment tank 4 are arranged in such a way as to be placed at two opposite corners of the biological treatment tank 4, along the diagonal .
    The two preceding arrangements advantageously make it possible, in the case of a packing of the fluidized bed type, to obtain a biological treatment, even in the case where the aerator is inactive: the effluents are thus forced to pass through the lining 9 partially grouped together. upper water, along the diagonal of the tank 4, from top to bottom of the lining 9.
    It is thus possible to control the aerator 42 alternately, for example by means of a clock, by prolonging the biological treatment of the effluents, even in the time intervals where the aerator is inactive.
    The outlet 41 visible in FIG. 5 is formed by a pipe successively comprising a first vertical part 410 connected to the inlet of the secondary settling tank 5 by means of the pipe 82, an angled part 411 and an inclined part 412 comprising on a portion of its length slots 413 regularly spaced on the lower part of the inclined portion 412. The slots 413 are intended to prevent the fluidized type packing from passing into the secondary settling tank 5. In general, the mouth of the outlet 41 will prevent the fluidized bed type packing from passing into the secondary settling tank. The equipment 1 also comprises said secondary settling tank 5, intended for the clarification of water, comprising an inlet 50 and an outlet 51, the secondary settling tank 5 being connected to the biological treatment tank 4 via the horizontal pipe 82. Advantageously, the outlet mouth 51 is disposed at a level higher than that of the inlet mouth 50. The outlet 51 is equipped with a device S '"such as an overflow defining the level water in the tank 5.
    According to a particular embodiment of the invention, the inlet 50 of the secondary settling tank 5 comprises two pipes 501 and 502 in particular symmetrical, with respect to a median transverse plane of the tank 5. The two pipes 501 and 502 allow in particular to split the incoming flow, and open at a lower level than that of the outlet 51 of said secondary settling tank 5. The pipes 501 and 502 start in the upper part of the tank 5, in the center, at the level of the pipe 82, the two pipes 501 and 502 inclined, each extending towards the side walls of the tank 5.
    The two pipes 501 and 502 respectively open in the vicinity of the two side walls at the longitudinal ends of the tank 5, the pipes 501 and 502 each having a bent end so as to direct the flow of effluents to the bottom of the tank 5 It is advantageous to divide the incoming stream advantageously to calm the waters at the inlet of the tank 5, to reduce the upward velocity of the water towards the outlet 51 and thus to optimize the settling.
    The secondary settling tank 5 comprises a sludge extraction pump 52 and an inclined bottom 53 intended to collect the sludge towards the sludge extraction pump 52.
    According to one embodiment of the invention, the inclined bottom 53 may comprise at least one element 530, 531 (ie two elements) of flexible material, the or each of the elements comprising two inclined lateral wings 532, and a median portion 533, the or each of the elements 530 and 531 being intended to be inserted through the manhole 2 of the secondary settling tank 5 by deforming elastically, the or each of the elements 530 and 531 taking up its shape and automatically locking once arranged at the bottom of the tank 5 of secondary settling.
    As can be seen in Figure 4 according to a non-limiting example, the inclined bottom 53 comprises two elements 530 and 531 of flexible material, each of the elements comprising two inclined lateral wings 532, and a central portion 533, the two elements 530 and 531. and 531 being intended to be inserted through the manhole 2 of the secondary settling tank 5 by deforming elastically, the two elements 530 and 531 taking their shape and automatically locking once arranged at the bottom of the settling tank 5 secondary.
    According to a particular embodiment of the invention, the lateral wings 532 form a minimum slope of 55 ° (for example 57 ° according to FIG. 4) with respect to the horizontal so that the sludge arriving on the bottom inclined down to the sludge extraction pump 52.
    The sludge extraction pump 52 is put in place once the inclined bottom 53 is in place, so that the pump 52 keeps the inclined bottom 53 in place thanks to its weight, in particular straddling the central portions 533. two elements 530, 531.
    The outlet 51 is positioned on the side face of the tank opposite that of the inlet 50, at a median zone of the side wall, so as to maximize the hydraulic paths between the two mouths of the inlet 50 and the mouth of the outlet 51. As shown in Figure 2, the mouth of the outlet can be oriented opposite the side wall of the vessel on which is positioned the outlet 51.
    This equipment allows the installation of a wastewater treatment plant inside a home. For this purpose, each of the at least three tanks of the equipment is handled, independently, in an interior room of the dwelling, in particular through the doors of the dwelling.
    The wastewater treatment plant has an inlet 30 for effluents and an outlet 51 for clarified water.
    The tanks are arranged side by side preferably along their width so as to occupy as little space as possible, the primary settling tank or tanks being positioned to ensure the proper connection to the arrival of domestic effluents.
    During laying, the first primary settling tank 3 is connected, in a sealed manner, to the second primary settling tank 3 'via a pipe 80, the second primary settling tank 3' being connected, sealed, to the biological treatment tank 4 through a pipe 81, and the biological treatment tank 4 being connected, in a sealed manner, to the secondary settling tank 5, through a pipe 82.
    Once the hydraulic connection is completed, the holding means 6 are arranged around the tanks in order to limit the deformation of the side walls of the tanks to the outside, under the weight of the liquids.
    Advantageously, the holding means 6 or 7 are preferably intended to be arranged at the grooves 8 formed on the tanks, encircling the tanks individually, or as a whole. The holding means 6 comprise, for example, pairs of bars 61, 62 such as U-irons associated with pairs of tie rods 63, 64, the U-shaped irons sliding in the grooves 8.
    According to another embodiment of the invention, the holding means 7 encircle said at least three tanks in their entirety. According to this embodiment, the holding means 7 may comprise a system of cables 73, 74 and bars 71, 72 surrounding said at least three tanks 3, 4 and 5, and a tensioner 75, 76 for each cable, the cables and bars being positioned at the grooves 8.
    The wastewater treatment plant is then connected to the treated water discharge pipe of the house.
    Advantageously, the hydraulic path obtained is optimized so as to ensure good settling and / or good biological treatment, despite the small dimensions of the tanks. Such a path is shown in Figures 1 and 2 by means of arrows. Thus, the domestic effluents enter the first tank 3 primary settling through the inlet 30 connected to the pipes of descent of raw sewage from the house. This first tank 3 makes it possible to perform a first separation of solid and liquid waste.
    The effluents pass through the tank 3 in the direction of the length to the outlet 31 and discharge into the second tank 3 'of primary settling via the inlet 30'. A new separation of solid waste / liquid waste is carried out within this tank 3 '.
    The effluents pass through the tank 3 'in the lengthwise direction to the outlet 31', pass through the prefiltration means arranged in the outlet and pour into the biological treatment tank 4 via the inlet 40. this tank 4, the effluents pass through a packing (media support) oxygenated cyclically by means of at least one aerator 42 disposed in the bottom of the tank 4 so as to promote the development of bacteria. Said at least one aerator is supplied with air through a hose 43 extending over the entire height of the tank 4 and opening at its upper part through a hole provided for this purpose.
    In the case where the aerator is active, the effluents are stirred and in contact with the lining of the biological treatment tank 4, to the outlet 41 and are discharged into the secondary settling tank 5, preferably on the inclined bottom 53, through the inlet 50 formed by the pipes 501 and 502.
    In the case where the aerator is inactive, the effluents pass through the submerged lining of the biological treatment tank 4 along its diagonal, from one corner opposite to another, to the outlet 41 and pour into the tank 5 of secondary settling, preferably on the inclined bottom 53, through the inlet 50 formed by the pipes 501 and 502.
    In the secondary settling tank 5, the settled sludge is sucked by the sludge extraction pump 52 and is redirected towards the first or second primary settling tank via a hose 54 connected to the pump 52. which extends over the entire height of the tank 5 and opens at its upper part through a hole provided for this purpose, the hose 54 is connected to a pipe 55 extending over all or part of the length of the assembled tanks and opening in the upper part of the first or second primary settling tank.
    Finally, the clarified water is discharged from the secondary settling tank 5 via the outlet 51.
    It should be noted that all or part of the devices S, S ', S "or S'" defining the level of water in the tanks 3, 3 ', 4 or 5 may be simple overflows as illustrated in FIGS. 5. A simple overflow makes it possible to precisely define the height level of the liquids in the associated tank.
    These devices S, S ', S ", S'" may also be constituted by flow limiting devices, known to those skilled in the art as such. Such a device is illustrated by way of non-limiting example in FIG. 8.
    Such a flow-limiting device makes it possible to maintain the water level between a low level (low level) and a high level (high level) and makes it possible, unlike a simple overflow, to retain the water longer in the tanks, especially when a large quantity of effluents arrives. This has the advantage of maximizing the residence time of the effluents in the tanks and thus improve the treatment.
    Naturally, other embodiments could have been envisaged by those skilled in the art without departing from the scope of the invention defined by the claims below.
    NOMENCLATURE 1 Equipment, 2 Manholes, 3,3 'Primary settling tanks, 30, 30' Primary settling tank inlets, 31,31 'Main settling tank outlets, 32 Pre-filtration means, 4 Biological treatment tank, 40 Tank inlet treatment biological, 41 Biological treatment tank outlet, 410, 411,412, Biological treatment tank outlet elements, 413 Slots, 42 Aerator, 43 Oxygen supply hose, 5 Secondary settling tank, 50 Secondary settling tank inlet, 501, 502 Secondary settling tank inlet pipes, 51 Secondary settling tank outlet, 52 Pump, 53 Inclined bottom, 530, 531 Flexible elements, 532 Side wings, 533 Middle part, 54 Sludge discharge hose, 55 Sludge extraction pipe, 6 Holding means, 61, 62 Pair of bars, 63, 64 Pair of tie-rods, 7. Means of restraint, 71.72 Pair of bars, 73.74 Pair of cables, 75.76 Tensioners, 8 Peripheral gorges, 80, 81.82 Connecting lines, 9 Garn issage (media support),
    Axial axis, S Device such as overflow (tank 3), S 'Device such as overflow (tank 3') S "Device such as overflow (tank 4), S '" Device such as overflow (tank 5).
    权利要求:
    Claims (26)
    [1]
    1. Equipment intended for the construction of a wastewater treatment plant, suitable for the construction of a wastewater treatment plant inside a dwelling, said equipment comprising at least three tanks and each comprising a water hole. man (2) at its upper part for access to the tank, said at least three tanks comprising: - one or more tanks (3, 3 ') of primary settling, in particular two in number, each comprising an inlet ( 30, 30 ') and an outlet (31, 3T), - one or more biological treatment tanks (4), comprising at least one aerator (42) intended to be immersed and to aerate the biological sludge and the effluents, and - a secondary settling tank (5), comprising an inlet (50) and an outlet (51), said at least three tanks (3, 3 ', 4.5) being intended to be contiguous and said inlet and outlet of said tanks being intended to be connected to each other yen of pipelines (80, 81, 82) of said equipment such that the effluents pass successively through the primary settling tank (s), the biological treatment tank (s) and the secondary settling tank and into which each of the at least three tanks (3, 3 ', 4, 5) is integral and has dimensions such that it can be handled through standard gates or alternatively, each of said at least three vats is composed of two distinct parts, particular two half-shells, independently manipulable, intended to be connected in a sealed manner to form the sealed envelope of said tank, each of the two tank portions having dimensions so as to be able to handle the tank portion through standard doors .
    [2]
    2. Equipment according to claim 1 wherein said at least three tanks (3, 3 ', 4, 5) are parallelepipedic, each tank having, preferably a height greater than the length and width.
    [3]
    3. Equipment according to claim 1 or 2 wherein the size of the standard doors is 204 cm high and 93 cm wide.
    [4]
    4. Equipment according to one of claims 1 to 3, wherein the height of each of said vats or parts of tanks is between 140 cm and 200 cm, and more preferably between 160 cm and 180 cm, the length of each of said vats or portions of vats being between 100 cm and 150 cm, and the width of each of said vats or vessel parts being between 60 cm and 90 cm.
    [5]
    5. Equipment according to one of claims 1 to 4 wherein each of said at least three tanks or parts of tanks has a weight of less than 90 kg, preferably less than 70 kg.
    [6]
    6. Equipment according to one of claims 1 to 5, wherein each of said at least three tanks comprises peripheral grooves (8), regularly spaced especially or part of the height of each of said tanks, to stiffen their structure.
    [7]
    7. Equipment according to one of claims 1 to 6 comprising holding means (6,7) for constraining the outward deformation of the side walls of said at least three tanks, encircling said tanks.
    [8]
    8. Equipment according to claim 7 wherein said holding means (6,7) comprise: - a plurality of pairs of bars (61,62) each associated with a pair of tie rods (63,64), each pair of bars and each pair of corresponding tie rods being intended to encircle said tanks, individually, said bars (61,62) being intended to run in said groove of one of the tanks, depending on the length of the tank, the tie rods (63,64) now the spacing of the two bars, intended to run in the same groove over the width of the tank, or alternatively, - a plurality of pairs of bars (71,72) associated with a pair of cables (73,74), each pair bars (71,72) and corresponding pair of cables (73,74) being intended to encircle all of said at least three tanks, the bars of the same pair being intended to run in the throats of the two most extreme tanks of the set, according to the length of the tanks, lesd its cables being intended to run along the width of the tanks, along the throats of the corresponding tanks, the cables maintaining the spacing between the bars and can be stretched by means of tensioners (75,76).
    [9]
    9. Equipment according to one of claims 1 to 8, wherein the outlet (31,31 ') of said primary settling tank or one (3, 3') at least two primary settling tanks comprises a device (S, S ') such as an overflow defining the level of effluent in said primary settling tank (3, 3'), the inlet (30, 30 ') of the primary settling tank or one of at least two primary settling tanks being intended to be immersed, opening at a level below that of the effluent level fixed by the device (S; S ').
    [10]
    10. Equipment according to claim 9 wherein the inlet (30 ') of the primary settling tank (3') or at least one of the two primary settling tanks opens at a level below the level at which the outlet opens. (31 ') in said tank (3').
    [11]
    11. Equipment according to one of claims 1 to 10, wherein the mouths of the inlet (40) and the outlet (41) of said tank (4) biological treatment are disposed at two opposite corners of the tank biological treatment, according to the diagonal of the tank (4).
    [12]
    12. Equipment according to one of claims 1 to 11, wherein said outlet (31 ') of said primary settling tank, intended to be adjacent to said biological treatment tank, comprises prefiltration means (32) such as a brush filter.
    [13]
    13. Equipment according to one of claims 1 to 12 wherein said biological treatment tank comprises a support lining (9) for bacteria.
    [14]
    Equipment according to claim 13, wherein the packing (9) is of the fluidized bed type, and comprises a plurality of elements.
    [15]
    Equipment according to claim 14, wherein said at least one aerator (42) is centered on the median axes of the biological treatment vessel and arranged in the lengthwise direction of the biological treatment vessel (4).
    [16]
    16. Equipment according to one of claims 1 to 15, wherein the outlet (51) of the tank (5) secondary settling comprises a device (S '") such as an overflow defining the level of water in the tank (5), said inlet (50) of said secondary settling tank comprises two pipes (501, 502) symmetrical with respect to the transverse median plane of the tank (5), capable of splitting the incoming flow, extending in the vicinity of one of the side walls of the tank and opening at a level lower than that of the outlet mouth (51) of said secondary settling tank (5), said two pipes (501, 502) opening respectively in the vicinity of the two walls; located at the longitudinal ends of the tank (5), said outlet (51) being disposed on the opposite side wall of the tank, at a central zone of the side wall.
    [17]
    17. Equipment according to one of claims 1 to 16, wherein said secondary settling tank comprises a sludge extraction pump (52) and an inclined bottom (53) for collecting the sludge towards said extraction pump ( 52).
    [18]
    Equipment according to claim 17, wherein said inclined bottom (53) comprises at least one element (530, 531) of flexible, removable material, the or each of said elements comprising two inclined lateral wings (532), and a middle part (533), the or each of said elements being intended to be inserted through the manhole of said secondary settling tank by deforming elastically, the or each of said elements taking their shape and automatically locking once arranged at the bottom of said tank.
    [19]
    19. Equipment according to claim 18, wherein said central portion (533) of the or each of said elements (530, 531), at the bottom of the tank, is intended to receive at least one extraction pump (52) sludge, said at least one sludge extraction pump (52) for holding said inclined bottom (53) in place.
    [20]
    20. Equipment according to one of claims 1 to 19. wherein each of said at least three tanks (3, 3 ', 4, 5) is in one piece and has dimensions so as to be able to handle the tank at through standard doors.
    [21]
    21. Equipment according to one of claims 1 to 19, wherein each of said at least three tanks is composed of two parts, in particular two half-shells, independently manipulable, intended to be connected sealingly to form the sealed envelope said tank, each of the two tank portions having dimensions such that they can handle the tank portion through standard doors.
    [22]
    22. Sewage treatment plant resulting from the assembly of the equipment according to one of claims 1 to 21 said wastewater treatment plant comprising an inlet for effluents and an outlet for clarified water.
    [23]
    23. Station according to claim 22 implementing equipment according to claim 2 wherein said at least three tanks (3, 3 ', 4, 5) are contiguous by their side walls, depending on the width of the tanks.
    [24]
    24. Station according to claim 22 or 23 implementing equipment according to claim 6, 7 or 8, wherein said holding means (6) encircle the tanks.
    [25]
    25. A method of laying a wastewater treatment plant inside a dwelling by means of equipment according to claim 20 wherein: - each of said at least three tanks (3, 3 ', 4, 5) of the equipment, independently, in an interior room of the dwelling, in particular through the doors of the dwelling - at least three tanks are joined to the said housing, - at least three tanks (3, 3) are connected hydraulically. ', 4, 5) between them by means of pipes (80, 81, 82) of said equipment such that the effluents pass successively through the primary settling vessel (s) (3, 3'), the vessel (s) (4) biological treatment and the tank (5) secondary settling, - optionally there are the holding means around said at least three tanks, in particular at the peripheral grooves of said tanks, - the pipe is connected to the descent of raw water of the residential treatment plant wastewater through the inlet (30), - the outlet pipe is connected (51) of the tank (5) of secondary settling to the discharge pipe in the housing water.
    [26]
    26. A method of laying a wastewater treatment plant inside a dwelling using equipment according to claim 21 wherein: - handling each of the two parts of said at least three tanks of the equipment, independently, in an interior part of the dwelling, in particular through the doors of the dwelling, - the two vessel parts are assembled in a sealed manner, for each of the at least three tanks of the equipment, so as to constitute the sealed envelope of the tank, - said at least three tanks are joined, - said at least three tanks are hydraulically connected to each other by means of pipes of said equipment such that the effluents pass successively through the primary settling tank or tanks, the biological treatment tank or tanks and the secondary settling tank; optionally, the holding means are disposed around said at least three tanks, in particular at the peripheral grooves of the said tanks, - the raw water desalinization pipe of the house is connected to the wastewater treatment plant via the inlet, - the outlet pipe of the secondary settling in the water drainage pipe of the house.
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    同族专利:
    公开号 | 公开日
    FR3006310A1|2014-12-05|
    DE202014102520U1|2014-07-29|
    FR3006310B1|2015-06-19|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US4325823A|1980-05-12|1982-04-20|Tom Graham & Associates|Wastewater treatment system|
    DE3823664C1|1988-07-08|1990-02-22|Guss- Und Armaturwerk Kaiserslautern Nachf. Karl Billand Gmbh & Co, 6750 Kaiserslautern, De|Separating device for sewage|
    DE4400149C2|1994-01-05|1999-11-04|Biolog Biotechnologie Und Logi|Freely erectable multi-chamber domestic water treatment plant|
    DE10211608A1|2002-03-11|2003-09-25|Hansgrohe Ag|Plant for recycling used water|
    FR2966143B1|2010-10-19|2018-02-09|Simb|PURIFICATION STATION OF WASTEWATER WITH COAXIAL COMPARTMENTS|
    法律状态:
    2021-04-19| MM| Lapsed because of non-payment of the annual fee|Effective date: 20200630 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1354920|2013-05-30|
    FR1354920A|FR3006310B1|2013-05-30|2013-05-30|EQUIPMENT FOR THE PRODUCTION OF A WASTEWATER TREATMENT STATION.|
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