• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    This filter (12) for the purification of polluted aquarium water is characterized in that it comprises a container (20) having a water inlet polluted under pressure (11) at the bottom and at least one outlet filtered water in the upper part, said container (20) being partially filled with a biofiltration medium, lighter than water, on which a bacterial biofilm purifier is able to develop or is developed, said film containing bacteria nitrifying agents capable of biodegrading the nitrogenous compounds derived from the metabolism of the animals of the aquarium (1), said container (20) also having in the lower part an outlet (30) for purging the excess bacterial mass which may over time become detached biofiltration medium.
    公开号:FR3029068A1
    申请号:FR1461546
    申请日:2014-11-27
    公开日:2016-06-03
    发明作者:Herve Coudert；Pascal Vizier
    申请人:Cie De L'hydraulique Et de la Filtration - C H F；
    IPC主号:
    专利说明:

    [0001] FILTER FOR PURIFYING A POLARIZED WATER OF AQUARIUM, PURIFICATION DEVICE FOR AQUARIUM INCORPORATING SAID FILTER, AND AQUARIUM ASSEMBLY EQUIPPED WITH SUCH FILTER OR PURIFICATION DEVICE The present invention relates to a filter for the purification of polluted aquarium water. It also relates to an aquarium purification device incorporating said filter, and an aquarium assembly W equipped with such a filter or purification device. By aquarium is meant a reservoir of salt water or soft water in which are kept and fed animals, the term aquarium including fishponds which are aquariums for storage and presentation especially crustaceans or live fish intended for the human nutrition. Currently, all the fishponds are designed around an identical technique whose water treatment relies on the gravitational passage of water through a layer of cellulose wadding which ensures the clarification of water and biodegradation nitrogen compounds derived from the metabolism of stored animals. The limits of this technique are reached. The rapid fouling of the filter mass necessitates rather heavy washing operations which, for this reason, are insufficiently carried out by the users. This fouling promotes the development of bacterial foci and the accumulation in water of nitrogen compounds (ammonia) and nitrates. This drift of water quality is not without consequences on the health of the animals stored and on the taste qualities of the products cooked at the base of these animals.
    [0002] The present invention aims to provide a filter for the purification of polluted aquarium water that provides an effective and durable solution to the fouling problem mentioned above.
    [0003] The invention also aims to provide a purification device which includes such a filter and which can be connected to an aquarium, in particular that can be adapted to an existing aquarium, so that the polluted water of the aquarium can cross the filter and be W recycled, in the purified state, in the aquarium. The invention also aims to propose an aquarium assembly comprising such a filter or such a device. Another object of the invention may be that of allowing to incorporate in such a filter or in such a device or in such an aquarium assembly organs having other functions useful for an aquarium, such as other filtering elements. , elements ensuring the separation of suspended solids, members 20 for clarifying water, sterilization thereof for example by UV, regulation of its pH and calco-carbonic balance, air conditioning by cold group, degassing and aeration of the water present in the aquarium, etc. For this purpose, it is proposed according to the invention a filter comprising a biofiltration medium forming during use a fluidized bed rising from the bottom of the container to allow decantation of the bacterial mass. The present invention therefore firstly relates to a filter for the purification of polluted aquarium water characterized in that it comprises a container having a water inlet polluted under pressure at the bottom and at least one outlet of filtered water at the top, said container being partially filled with a biofiltration medium, which is adapted to constitute a fluidized bed rising from the bottom of the container, under the action of pressurized water entering at the bottom and on which a bacterial biofilm purifier is able to develop or is developed, said film containing nitrifying bacteria capable of biodegrading the nitrogenous compounds derived from the metabolism of the animals of the aquarium, said container also having in the lower part a purge outlet of the excess bacterial mass that can over time become detached from the biofiltration medium. The biofiltration medium is advantageously lighter than water and is advantageously constituted by a plurality of plastic or composite elements with a microporous surface in order to attach the nitrifying bacteria, the plastic material composing said elements being for example the polyethylene or polypropylene and having in particular been made microporous by oxidative balancing. According to a first particular embodiment, the biofiltration medium was initially introduced into the uncoated container by the bacterial biofilm purifier, the latter being formed over time by the action of nitrifying bacteria present in the polluted water entering in said container. According to a second particular embodiment, the biofiltration medium was initially introduced into the container in the pretreated state by a bacterial biofilm purifier, the latter having been formed by seeding nitrifying bacteria grown to occur in the presence of ammonia and nitrites in the dissolved state, and continuing their development in said container over time under the action of nitrifying bacteria present in the polluted water entering said container. The polluted water may enter under pressure into said container through a tube opening into a diffuser arranged to allow a projection of the polluted water vertically at different points distributed in a horizontal plane at the bottom of said container. The container may advantageously have a bottom inclined towards the purge outlet. According to a particular characteristic of the filter according to the present invention, a horizontal grid is disposed in said vessel, dividing it into an upper biofiltration chamber in which said biofiltration medium is located and in a lower chamber, said grid being suitable for holding said biofiltration medium in said upper chamber and allowing the excess bacterial mass which detaches from it during operation of the filter to fall into said lower chamber which comprises the inlet of the polluted water and the exit of purge. According to another particular characteristic of the filter according to the present invention, an acid neutralization chamber, filled with a medium capable of ensuring the natural buffering of the water at a pH advantageously of 8, such as a limestone. of maerl type, is disposed in the container above the biofiltration medium, and separated from the latter by a grid 30 supporting said buffer medium and allowing the passage of filtered water leaving the biofiltration medium and moving down at the top under the effect of the pressure, said neutralization chamber being closed at its upper part. The filter according to the present invention may advantageously comprise a UV sterilization stage consisting of at least one germicidal UV lamp. In particular, the sterilization stage may comprise a horizontal quartz sheath in the axis of which is disposed an elongated UV lamp and which is located at least partly above the grid separating the medium from the W biofiltration medium. tamponade. The present invention also relates to a device for purifying polluted aquarium water and recycling purified water in the aquarium, characterized in that it comprises a filter as defined above, a conduit for supplying pressurized water from the bottom of the aquarium to the lower part of the container delimiting said filter and a conduit for returning purified water to the aquarium. In the path of the supply duct, may advantageously be arranged: at least one pump such as a magnetic drive pump or an air pump; at least one device for mechanical separation of suspended matter, such as a filter sleeve or a filter membrane; and / or at least one activated carbon water clarification device, such as an activated carbon cartridge device; and where appropriate at least one oxygen injection point. In the return path, it is advantageous to have: an air conditioning unit for a cold unit or thermal resistance, such as a heat pump ensuring the thermal regulation of the water; and / or in derivation, a device for removing nitrates, such as an autotrophic denitration device on sulfur beads; and / or at least one ozone injection point; and / or at least one injection point of a disinfecting compound and its chemical stabilizer. The device according to the invention may also comprise at least one device for fixing a probe for measuring physico-chemical parameters, such as pH, temperature, rH, dissolved oxygen, water inside the filter and or at the inlet of said filter and / or at the outlet thereof, making it possible to control the operation of the different stages of the filtration. The purge outlet of the container delimiting the filter may advantageously be sent to a device for mechanical separation of suspended matter, such as a filtering sleeve or a filtering membrane, making it possible to obtain a purified water which is intended to be returned to aquarium water without loss of water volume. The present invention also relates to an aquarium assembly comprising a tray intended to receive water, fresh or salty, in which live animals, such as fish and / or crustaceans, will evolve and a filter for the purification of water. polluted from said tank or a device for purifying polluted water 30 of said tank and recycling purified water in said tank, said filter and said device being as defined above.
    [0004] The bottom of the aquarium according to the invention may be coated internally with a bacteriostatic coating, such as a coating formed of electrically charged glass grains, with catalytic action.
    [0005] In addition, the return duct can cross the bottom of the aquarium to open above the water surface of the aquarium, where the water jet is broken to form a thin layer of water-shaped dome falling on the surface of the water, oxygen can be injected into the interior space of the dome. To better illustrate the subject of the present invention, a particular embodiment will be described below with reference to the single FIGURE of the attached drawing, which schematically represents an aquarium equipped with a purification device of the invention. polluted water from it. In this single Figure, it can be seen that there is shown an aquarium 1 which is constituted by a tank or tank 2 containing water, here sea water, in which evolve live animals 3, here crustaceans. At the bottom 4 of the aquarium 1, is connected sealingly by a wall-pass 4a a conduit 5 for discharging water which is polluted by waste from the metabolism of live animals. This duct 5, in the path of which successively a quarter turn valve 6 and a magnetic drive pump 7 are arranged, extends to a three-way valve 8 where it divides into two branches 9 and 10. branch 9 extends to the inlet 11 of a filter 12 which will be described in more detail below. On the path of the branch 9, are successively arranged a filter 13 for mechanical filtration in line on filter sleeve or filter membrane, to ensure a separation of suspended matter (MES); a filter 14 for in-line filtration on an activated carbon cartridge, intended to ensure clarification of water on said activated carbon; an oxygen input point 15 from a bottle 16 via a conduit 17; a sampling point 18; and a quarter-turn valve 19. The filters 13 and 14 each comprise in the upper part an air purge respectively 13a and 14a and in the lower part a waste purge respectively 13b and 14b. The filter 12 is constituted by a container 20 having a peripheral wall 21, in particular cylindrical, connected to a bottom 22 and capped in the upper part by a cover 23. In the container 20, are arranged two grids 24 and 25, the grid 24 being disposed adjacent the bottom 22 of the container 20 and the grid 25 in the middle region thereof. Between the bottom 22 and the grid 24 is a space 26 into which the branch 9 opens through the inlet 11. The branch 9 extends beyond the inlet 11 into the space 26 to branch out into several sections. branches 27 which are oriented upwards and whose outlets 28, forming a diffuser, are located under the grid 24. The branches 27 are in sufficient number and are evenly distributed so that the water projected by the outlets 28 can cover the 30 all or almost all of the lower surface of the grid 24. On the bottom 22 is disposed an inclined wall 29 which directs the waste falling on it during operation of the filter 12 - as will be described below to a lateral outlet 30 of the space 26, which is extended by a purge duct 31 opening into a sewer or collection 32. In the path of the purge duct 31, there is a quarter-turn valve 33, then a valve three-way 34, whereby the purge duct 31 can be addressed, by a bypass 35, to a filter 36 similar to the filter 13 and having, like the latter, an air purge 36a in the upper part and a waste purge 36b in the lower part. The purge 36b can be directed to the sewer or the collection 32 by a conduit 37. The purified water having passed through the filter 36 can be recycled by pouring into the reservoir 2 via a conduit 38. Between the grids 24 and 25 is a space 39 which is filled with elements 40 which are lighter than water and on which will be installed during operation a bacterial biofilm purifier. These elements 40 are constituted for example by small pieces of plastic material having a large surface, which has been made microporous by oxidative balancing. By way of example, it is possible to manufacture polyethylene tubes comprising partitions arranged diametrically, in particular two diametrically opposed partitions, these tubes being obtained by extrusion and then being cut transversely to form the elements 40 for filling the space 39. Between the grid 25 and the cover 23 there is a space 41 which is filled with a calcium or calcareous medium in grains whose role is indicated below. The gate 25 has orifices of smaller size than the grains of calcium or calcareous medium above.
    [0006] The filter 12 also comprises a germicidal UV lamp 42 which comprises a quartz tubular sheath 42a in which the actual UV lamp 42b, of elongated shape and located in the axis of the sheath 42a, is arranged horizontally in the mounting position. . This axis is located above the grid 25 or at the level of the grid 25, the latter then having an opening for the passage of the portion of the UV lamp 42b passing therethrough. The purified water in the filter 12 comes out of the latter W through a conduit 43 which is connected to the branch 10 by a three-way valve 44. The lid 23 has an air purge 23a which can be connected by a conduit 45 beyond a three-way valve 44, the branch extends along a conduit 10a in the path of which there is a sampling point and which enters, after passage through a quarter-turn valve 47 into a cold unit air conditioner 48 which, being known, will not be described in more detail here. The purge of the device 48 is designated by the reference numeral 48b. The cooled water in the device 48 exits therefrom through a duct 49 along which are disposed two quarter-turn valves 50 and 51, the first close to the outlet of the device 48 and the second downstream of the first . Between the two valves 50 and 51, the duct 49 has a bypass 52, the return of which in the duct 49 is located downstream of the valve 51. On this branch 52 is installed a device 53 for the removal of nitrates by the autotrophic route. on sulfur balls.
    [0007] Quarter-turn valves 54, 55 are arranged on the branch 52 respectively on the input branch in the device 53 and on the output branch of the device 53. A sampling point 56 is provided downstream of the valve 55 before the return of the bypass 52 in the conduit 49. Between the connection point 57 of the outlet branch of the conduit 52 and the wall-pass 4b of the bottom of the aquarium 1, there is a point 58 of ozone injection by W an outlet pipe 59 of an apparatus 60 for producing ozone. Beyond the wall-pass 4b, the duct 49 extends in the tank 2 of the aquarium 1 by branch 49a, here vertical, through which the purified water 15 recycled into said tank 2. In the example shown, this branch 49a can itself be extended by a branch 49b which is above the surface of the water present in the tank. The outlet of the water can be adjusted at the end 49c of the branch 49b so that the outgoing water falls as a thin film in the form of a dome 61. In the semispherical space 62 delimited by the dome 61 and the surface of the water in the tank 2, oxygen can be injected from a bottle 62 through a conduit 63 on the path of which there is a bubble counter 64. The bottom 4 of the tank 2 The aquarium 1 may comprise a bacteriostatic inner liner 65 composed of electrically charged, catalytically active glass grains. We will now describe the operation of the purification device of the polluted water of the aquarium 1 is an is and recycling in the latter purified water, this device comprising the filter 12. The polluted water is pumped by the pump 7 to be addressed to the filter 13 for the separation of the MES. This separation of the MES from the beginning of the treatment chain limits the accumulation of clogging materials. The easy replacement of the filtering sleeve or the filtering membrane equipping the filter 13 ensures the transparency of the water. W The latter undergoes a clarification in the filter 14 and is sent under pressure to the filter 12 by the inlet 11. The water is projected by being regularly distributed under the mass of elements 40, lighter than water, present in the water. 39, which form a fluidized bed-like system. As indicated, a scrubbing bacterial biofilm develops on the elements 40, and when it becomes thick, detaches from them and falls, through the holes of the grid 24, into the space 26, where it is removed by the outlet 30 to be directed to the sewer or the collection 32 or after filtration through a filter 36 similar to the filter 13, be returned in the form of a stream of purified water 38 in the tank or tank 2 It can thus be seen that the excess bacterial mass operating as indicated in the manner of a fluidized bed is detached from its support (the elements 40) without producing a clogging plug or a decomposing mesoglea. The purge 30 eliminates this unwanted organic material without having to clean the entire filter mass. The biofilter can never be cleaned. The holes in the grid 24 are of sufficiently small size to retain the elements 40 and sufficiently large to allow the biofilm pieces that come off to pass through.
    [0008] The microporous surface of these elements allows the attachment of the excess bacterial mass before it breaks off to fall to the bottom of the filter. Moreover, it can be seen that, in view of the formation of the "fluidized bed", the grid 24 could very well be dispensed with. By following the arrows indicating the path of the water in the filter 12, it can be seen that after passing through the fluidized bed, the purified water passes through the grate 25 into the chamber 41 in which acid neutralization is performed through the calcium medium. Indeed, the biofiltration is chemically acidifying and the pH must be raised, especially in operation with seawater. The purified water that rises through the calcium medium falls around the quartz sheath 42a of the UV lamp 42. to be sterilized. It is then advantageously addressed to the cooling unit stage 48 by cold group, then, if appropriate, it undergoes an autotrophic denitration on sulfur in 53, before being forced back over the surface of the water of the aquarium 1. The outgoing jet is broken and then mastered to form a thin layer of dome water 61, which shape maximizes the gas exchange surface between the water and the atmosphere. The carbon dioxide produced by the bacterial biofilm is thus expelled, the water being simultaneously enriched with oxygen from the atmosphere. We can thus dispense with the traditional aerator or bubbler. The underside of the dome 61 can be enriched with pure oxygen fed through line 64 to force the dissolution of the gas in the water.
    [0009] The aquarium according to the present invention thus makes it possible to ensure the storage in good conditions of crustaceans such as marine crustaceans at densities of up to 30 to 40 kg / m 3 and at temperatures of between 8 and 25 ° C. It is understood that the embodiments which have just been described have been given for information and not limitation and that modifications can be made without departing from the scope of the present invention. The foregoing description of the single figure also shows the optional measures that may be associated with the operation just described: addition of pure oxygen at 15; gas recirculation from point 23a to point 4b; ozone injection at point 58; recycling in the aquarium 1 of the purge 31 after filtration 36_
    权利要求:
    Claims (9)
    [0001]
    CLAIMS1 - Filter (12) for the purification of polluted aquarium water, characterized in that it comprises a container (20) having a water inlet polluted under pressure (11) at the bottom and at least one filtered water outlet at the top, said container (20) being partially filled with a biofiltration medium, which is adapted to constitute a fluidized bed rising from the bottom of the container, under the action of pressurized water entering in the lower part and on which a bacterial biofilm purifier is able to develop or is developed, said film containing nitrifying bacteria able to biodegrade the nitrogenous compounds derived from the metabolism of the animals of the aquarium (1), said container (20) ) also having in the lower part an outlet (30) for purging the excess bacterial mass which can over time become detached from the biofiltration medium. 20
    [0002]
    2 - Filter (12) according to claim 1, characterized in that the biofiltration medium, lighter than water, is constituted by a plurality of elements (40) of plastic or composite material with a microporous surface in order to the attachment of nitrifying bacteria, the plastic material comprising said elements (40) being for example polyethylene or polypropylene and having in particular been made microporous by oxidative balancing. 30
    [0003]
    3 - Filter (12) according to one of claims 1 and 2, characterized in that the biofiltration medium was initially introduced into the container (20) without coating by the bacterial biofilmM purifier, the latter being formed during the time under the action of nitrifying bacteria present in the polluted water entering said container (20).
    [0004]
    4 - Filter (12) according to one of claims 1 and 2, characterized in that the biofiltration medium was initially introduced into the container (20) in the pre-coated state with a bacterial biofilm purifier, the latter having been formed by seeding nitrifying bacteria W developed in the presence of dissolved ammonia and nitrites, and continuing their development in said container (20) over time under the action of nitrifying bacteria present in the polluted water entering said container (20). 15
    [0005]
    5 - Filter (12) according to one of claims 1 to 4, characterized in that the polluted water enters under pressure in said container (20) by a tube opening into a diffuser (28) arranged to allow projection 20 water polluted vertically at different points distributed in a horizontal plane at the bottom of said container (20).
    [0006]
    6 - Filter (12) according to one of claims 1 to 5, characterized in that the container (20) has a bottom inclined towards the purge outlet.
    [0007]
    7 - Filter (12) according to one of claims 1 to 6, characterized in that a horizontal grid (24) 30 is disposed in said container (20), dividing the latter into a upper chamber (39) biofiltration in which there is said biofiltration medium and in a lower chamber (26), said grid (24) being able to hold said biofiltration medium in said upper chamber (39) and to let the excess bacterial mass which detaches from it during operation of the filter (12) to fall into said lower chamber (26) which has the inlet (11) of the polluted water and the purge outlet (30).
    [0008]
    8 - Filter (12) according to one of claims 1 7, characterized in that a chamber (41) W acid neutralization, filled with a medium capable of ensuring the natural buffering of water to a pH advantageously of 8, such as a limestone of maerl type, is disposed in the container (20) above the biofiltration medium, and separated from the latter by a grid (25) supporting said buffer medium and allowing passing the filtered water out of the biofiltration medium and moving up and down under the effect of pressure, said neutralization chamber being closed at its upper part. 20
    [0009]
    9 - Filter (12) according to one of claims 1 to 8, characterized in that it comprises a UV sterilization stage consisting of at least one germicidal UV lamp (42). 25 - Filter (12) according to claims 8 and 9 taken in combination, characterized in that the sterilization stage comprises a horizontal quartz sheath (42a) in the axis of which is disposed an elongated UV lamp (42b). ) and which is located at least partly above the grid (25) separating the biofiltration medium from the buffer medium.11 - Purification device for polluted aquarium water and recycling purified water in the aquarium (1), characterized in that it comprises a filter (12) as defined in one of claims 1 to 11, a conduit (5-9) for supplying water under pressure polluted from the bottom (4) of the aquarium (1) to the lower part of the container (20) delimiting said filter (12) and a purified water return duct in the aquarium (1). W 12 - Device according to claim 11, characterized in that, in the path of the supply duct (5-9), are arranged: at least one pump (7) such as a magnetic drive pump or a pump air; At least one device for mechanical separation of suspended solids (13), such as a filtering sleeve or a filtering membrane; and / or at least one activated carbon water clarification device (14), such as an activated carbon cartridge device; and - where appropriate at least one point (15) of oxygen injection. 13 - Device according to one of claims 11 25 and 12, characterized in that, on the return path (43-10a-49), are arranged: a device (48) cooling unit by cold group or thermal resistance, such as a heat pump providing thermal regulation of the water; and / or by-passing, a device (53) for removing nitrates, such as an autotrophic denitration device on sulfur beads; and / or at least one ozone injection point (58); and / orat least one injection point of a disinfectant compound and its chemical stabilizer. 14 - Device according to one of claims 11 5 to 13, characterized in that it comprises at least one device for fixing a probe for measuring physico-chemical parameters, such as pH, temperature, rH, dissolved oxygen , water inside the filter (12) and / or at the inlet of said filter (12) and / or at the outlet thereof W for controlling the operation of the different stages of the filtration. 15 - Device according to one of claims 11 to 14, characterized in that the purge outlet (30) 15 of the container (20) defining the filter (12) is addressed to a device (36) for mechanical separation of materials in suspension, such as a filter sleeve or a filter membrane, to obtain a purified water which is intended to be returned to the aquarium water (1) without loss of the volume of water. 16 - Aquarium assembly (1) comprising a tray (2) for receiving water, soft or salty, in which live animals, such as fish and / or crustaceans, will evolve and a filter (12) for the purification of polluted from said tank (2) or a device for purifying polluted water from said tank (2) and for recycling purified water in said tank (2), said filter (12) being such that defined in one of claims 1 to 10 and said device being as defined in one of claims 11 to 15.17 - Aquarium assembly according to claim 16, characterized in that the bottom (4) of the aquarium ( 1) is coated internally with a bacteriostatic coating (65), such as a coating of electrically charged glass grains, with catalytic action. 18 aquarium assembly according to one of claims 16 and 17, characterized in that the return duct (49) through the bottom (4) of the aquarium W (1) to open above the surface of the aquarium water (1), where the jet of water is broken to form a thin layer of dome-shaped water (61) falling on the surface of the water, oxygen being injected into the water interior space of the dome (61). 15
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    同族专利:
    公开号 | 公开日
    FR3029068B1|2017-05-19|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
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    CN107739725A|2017-10-20|2018-02-27|武鸣县红鹰肥业有限公司|The preparation method of bacteria agent|
    CN109205959A|2018-11-07|2019-01-15|正丰源生物科技（苏州）有限公司|A kind of active carbon filtration purifier|
    CN109368938A|2018-12-04|2019-02-22|重庆士继生态环境科技有限公司|A kind of full aerobic nitrogen removal technique of livestock breeding wastewater pre-treatment and integration apparatus|
    法律状态:
    2015-10-29| PLFP| Fee payment|Year of fee payment: 2 |
    2016-06-03| PLSC| Publication of the preliminary search report|Effective date: 20160603 |
    2016-09-26| PLFP| Fee payment|Year of fee payment: 3 |
    2017-09-26| PLFP| Fee payment|Year of fee payment: 4 |
    2018-09-28| PLFP| Fee payment|Year of fee payment: 5 |
    2019-09-30| PLFP| Fee payment|Year of fee payment: 6 |
    2020-09-30| PLFP| Fee payment|Year of fee payment: 7 |
    2021-11-17| PLFP| Fee payment|Year of fee payment: 8 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1461546A|FR3029068B1|2014-11-27|2014-11-27|FILTER FOR PURIFYING A POLARIZED WATER OF AQUARIUM, PURIFYING DEVICE FOR AQUARIUM INCORPORATING SAID FILTER, AND AQUARIUM ASSEMBLY EQUIPPED WITH SUCH FILTER OR PURIFICATION DEVICE|FR1461546A| FR3029068B1|2014-11-27|2014-11-27|FILTER FOR PURIFYING A POLARIZED WATER OF AQUARIUM, PURIFYING DEVICE FOR AQUARIUM INCORPORATING SAID FILTER, AND AQUARIUM ASSEMBLY EQUIPPED WITH SUCH FILTER OR PURIFICATION DEVICE|
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