• 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:
    SUMMARY The invention relates to a filter material comprising a lime product in particulate form and a chemically inert material in particulate form, the filter material having an effective neutralization value of 5 - 30% CaO, determined by method ASTM 602. The invention also relates to an arrangement for reducing phosphorus and / or heavy metal load in watercourses. The arrangement comprises a control dam, which is arranged in the ground, which dam has a bottom and rocks which define its inner volume. Water is led from the surrounding ground to the control dam and from the control dam water is led to a filter basin. The water is arranged to flow through the filter basin and is fed into contact with filter material in the filter basin, whereby compounds comprising phosphorus and / or heavy metals react with the filter material and bind to the filter material. Finally, water is discharged into the Than filter pool. Fig. 2
    公开号:SE1251002A1
    申请号:SE1251002
    申请日:2012-09-07
    公开日:2013-03-10
    发明作者:Anne-Mari Aurola；Kjell Dahlberg；Teija Kirkkala；Harri Mattila；Kjell Weppling
    申请人:Nordkalk Oy Ab；
    IPC主号:
    专利说明:

    2 drainage water from mines, quarries and tory production asphalt can have an increased concentration of heavy metals.
    It is an object of this invention to minimize or even completely eliminate the disadvantages of the prior art.
    Another purpose is to provide a filter material and an arrangement for effectively reducing phosphorus and / or heavy metal load in watercourses.
    Another object of the invention is to provide an arrangement where the condition of the filter material can be easily checked and monitored.
    These objects are achieved by the invention having the pitches specified in the pitcher part of the following claim claims.
    A typical filter material according to the present invention for reducing phosphorus and / or heavy metal loading in a watercourse comprises a lime product in particulate form, the particle size of the lime product being> 0.01 mm, and a chemically inert material in particulate form, which filter material has an effective neutralization value of 5 - 30 `) / 0 CaO, advantageously 10 - 25 (:) / 0 CaO, more advantageous 10-15 (:) / 0 CaO, determined using standard method ASTM 602, in force in August 2011.
    A use of the filter material according to the invention is for the reduction of phosphorus and / or heavy metal load Than run-off and / or drainage water of agricultural and arable land; Than run-off water from animal stables and enclosures for animal production and / or domestic animals, such as cows and haste; from run-off and / or drainage water from pals farms, such as ray or mink farms; Than leachate from landfills; from leaching and / or run-off water from composting sludge or bio-waste; from urban stormwater; Than dikes and avatten from arable land; Than waste water or leachate tan mining or quarry; from acidic effluent Than tory effluent asphalt; or from water as anyants when irrigating timber storage to watercourses. A typical arrangement according to the present invention for reducing phosphorus and / or heavy metal load in watercourses comprises a regulating pond, which has a bottom and rocks defining its internal volume, - an inlet for incoming water Than a surrounding ground, a drain, a filter basin comprising a bottom and rocks defining its internal volume, filter material according to the invention arranged in the internal volume of the filter basin, an inlet for incoming water, a drain, an effluent pipe system for diverting water away from the filter basin, the regulating dam and the filter basin with each other, for example via a unifying rudder system, said that the water is led from the control dam to the filter basin.
    It is now surprising that the filter material according to the invention achieves an efficient reaction with phosphorus-containing compounds, and optimal flow rate and sample through the filter pool. With the relatively high pH value, such as pH 9 - 11, in the filter basin, successful phosphorus and / or the possible heavy metal ions precipitate in the water that enters the filter basin. In addition, clogging of the filter can be effectively reduced, even completely eliminated, by arranging a regulating pond in front of the filter basin. Water is collected or led to the regulation dam. Man the surrounding ground through the use of 6 open ditches, slopes or underground roof ditches and canals. Thus, the water that collects to the regulating pond is rich in nutrients and compounds, which contain phosphorus and / or heavy metals, which originate in leaching of the soil and / or Use fertilizers, but poor in solids and particles. In addition, solid solids or particles, which are present in the water entering the regulator, are trapped in the regulator on the road Than inlet to the drain, the water leading to the filter pool comprising, if any, a very low concentration of solids or particles. Damned does not clog the water to be filtered 4 the filter in the filter pool, and the harmful compounds are filtered effectively and the life of the filter is extended.
    In this context, the term "nuclear inert" describes a material which does not chemically react with phosphorus, phosphorus-containing substances or heavy metals in water as a purifier.
    Chemically inert material in particulate form provides only mechanical filtration properties for the material, such as suitable permeability and retention capacity, river velocity and river pattern.
    According to one embodiment of the invention, the particulate lime product in the filter material is selected from a group consisting of dehydrated lime, fire lime, dolomitic quicklime, quicklime, hydraulic lime, commercial MgO, commercial Mg (OH) 2, sugar factory lime or their mixtures. The filter material in the filter basin advantageously comprises a lime product in particulate form, selected from fire lime or slaked lime or flake mixture thereof. According to one embodiment, the lime product comprises a mixture of fire lime and maid limestone or maid dolomite.
    According to one embodiment, the particle size of the particulate lime product is in the range 0.01 - 15 mm, advantageously 0.01 - 5 mm, more advantageously 0.1 - 2 mm.
    The lime product can be ground to a desired particle size or it can be compacted or granulated to a desired particle size from finer grain sizes.
    Dehydrated lime or burnt lime, which is suitable as a lime product for use in an embodiment of the present invention, comprises 80-98 (:) / 0 CaO and 0.01-5% MgO, determined using XRF, and may have a particle size of 0.01-2 mm or 2-15 mm. The amount of active CaO is normally 8090%, determined with standard method SFS 5188, and the effective neutralization value can be 70-95 (:) / 0, determined with standard method ASTM 602, in force in August 2011.
    Dolomitic quicklime, which is suitable as a lime product for use in an embodiment of the present invention, comprises 60-99% CaO and 1% MgO, determined using XRF, and it may have a particle size of 0.01-2 mm or 0.1-15 mm. The effective neutralization value can normally be 70-95%, determined with standard method ASTM 602, in force in August 2011.
    Slack lime, also known as fine lime, which lends itself as a lime product for use in an embodiment of the present invention, usually comprises 80-95% Ca (OH) 2, determined by standard method EN 12485, and 70-80% CaO, determined by use of XRF, and may have a particle size of 0.01-1 or 0.1-5 mm. The effective neutralization value can be 70-85%, determined with standard method ASTM 602, in force in August 2011, and an annealing loss value (950 ° C) of 30-40%, determined with standard method SFS-EN 459-2.
    Commercial MgO, which lends itself as a lime product for use in an embodiment of the present invention, comprises as its main component 80-95% MgO, as determined by the use of XRF, and may have a particle size of 0.01-5 mm. It typically has a pH value in the range 9-11, and an annealing loss value (950 ° C) of 1%, determined by standard method SFS-EN 459-2.
    Commercial Mg (OH) 2, which is suitable as a lime product for use in an embodiment of the present invention, comprises as a main component 60% MgO, determined by using XRF, and may have a particle size of 0.01-5 mm. It typically has a pH value in the range 9-11, and an annealing loss value (950 ° C) of 30-40%, determined by standard method SFS-EN 459-2.
    Sugar factory lime, maid limestone and the mixture of dehydrated lime and maid limestone, which lamp itself as a lime product for use in an embodiment of the present invention, may comprise 0-95% CaO, 0-95% Ca (OH) 2, 0-5% CaCO3, and usually has an active CaO value of 40-95%, matt with standard method SFS 5188. The particle size is 0.01-3 mm. The lowest effective 6 neutralization value for sugar factory lime is typically 20 (:) / 0, determined with standard method ASTM 602, in force in August 2011.
    The particulate lime product, as anyands in the filter material, is advantageously free Than harmful constituents, i.e. it contains low concentrations of impurities, such as lead, cadmium, chromium, cobalt, copper, nickel, vanadium, zinc and mercury. In this way, it is possible to guarantee sufficient effluent water quality and minimize the risk that flake harmful pollution would reach millions and watercourses. Advantageously, the lime product comprises <0.2 mg / kg Cd, <5 mg / kg Co, <12 mg / kg Cr, <12 mg / kg Cu, <11 mg / kg Ni, <11 mg / kg Pb, <25 mg / kg V, <0.06 mg / kg Hg, <40 mg / kg Zn. The use of lime product that is free of harmful constituents makes the use of the filter material things and reliable.
    According to one embodiment of the invention, the chemically inert material in particulate form is selected from the group consisting of sand, gravel, light gravel, anthracite, granulated activated carbon, crushed glass particles, pumice and their mixtures. Advantageously, the chemically inert material tan group is selected which comprises sand, gravel and pumice.
    The particle size of the chemically inert material in particulate form is in the range 1 mm, advantageously 1 - 6 mm, more advantageously 2-6 mm, also more advantageously 2 - 5 mm. According to an embodiment of the invention, the filter basin mainly comprises sand, which has a particle size of 1-6 mm, advantageously 2-5 mm, sometimes approximately 3 mm. By carefully choosing the particle size of the chemically inert material, it is possible to optimize the flow through the filter material, to guarantee sufficient reaction time between the lime product and water which is purified and to counteract the formation of river channels in the filter material.
    The filter material may advantageously comprise 25 - 99%, advantageously 75 - 95%, more advantageously 80 - 90%, also more advantageously about 90% inert material in particulate form, and 1 - 75%, advantageously 5 - 25%, more advantageously 10 - 20%, even more advantageously about 10% lime product, which percentages are calculated by the total weight. The pH value of the filter material comprising a lime product and an inorganic material in particulate form is typically 7.5-12, advantageously 8-12.
    According to an advantageous embodiment of the present invention, lime product in particulate form is selected Than brand lime or slaked lime or any of their mixtures and the chemically inert material from a group comprising sand, gravel and pumice.
    According to an advantageous embodiment of the invention, the filter material comprises loose lime, Ca (OH) 2, as the particulate lime product and sand and / or pumice as the chemically inert material. Pumice can offer a beneficial filtration effect due to its open porosity.
    According to an embodiment of the invention, the filter material can be manufactured by mixing fire lime with moist sand, which comprises for example 5 - 15% by weight of moisture. The calcareous lime slackens when it comes in contact with the moist surfaces of the sand particles. A part of lime particles then adheres to the surfaces of the sand particles, whereby at least a partial coating of loose lime is formed on the surfaces of the sand particles. In this way, the filter material comprises a particulate lime product comprising particulate matter, and chemically inert material comprising sand, sand particles being at least partially coated with particulate matter.
    The filter material may also comprise maid limestone or maid dolomite. Maid limestone, which is suitable for use, typically comprises <5% MgO, determined using XRF, and has a particle size of 0.01-5 mm. It has a pH value in the range 9-11, and an annealing loss value (950 ° C) of 30-40%, determined with standard method SFS-EN 459-2. Maid dolomite, which is suitable for use, typically comprises <20% MgO, determined using XRF, and has a particle size of 0.01-5 mm. It has a pH value in the range 8.08.5, and an annealing loss value (950 ° C) of 30-40%, consisted of standard method SFS-EN 459-2. According to an embodiment of the present invention, the filter material comprises gypsum material, CaSO 4. If gypsum material is used in the filter material, it must be suitable for use in environmental applications, and have a low concentration of heavy metals and / or other contaminants. Usually, suitable gypsum material contains 85 - 98% by weight of CaSO4, calculated as dry matter, and its particle size is 0.01 - 5 mm. The pH of the gypsum material is typically 6.8 - 12, advantageously 8 - 9.
    A method for reducing phosphorus and / or heavy metal load in watercourses comprises that - a control dam is arranged in the ground, the dam having a bottom and rocks defining its internal volume, water being led from a surrounding ground to the control dam, water being led from the control dam to a filter pool, the water is arranged to flow through the filter pool and the water is forced into contact with filter material in the filter pool, whereby compounds containing phosphorus and / or heavy metals react with the filter material and bind to the filter material, and the water is led out of the filter pool.
    As water is led to the actual filter basin through a regulating pond, a number of advantages are achieved. Water to be treated can be collected from a larger area of arable land through the use of open hazards, ditches, slopes or underground roof ditches or canals and led to a separate control dam to control the water flow to the filter basin. Thus, a relatively stable flow through the filter basin can be achieved. The size of the control dam can also be dimensioned in such a way that the risk of the filter pool being flooded is minimized. Thus, the control dam is used to even out variations in the amount of water to be filtered.
    In this context, the term "regulating dust" describes a depression or excavation formed in the ground. The regulation pond can be a ditch, a -Danger, a pit, a basin, a trough, a cold, a pond, an embankment or a lagoon. The control pond can be tipped towards the surroundings or it can be covered by a layer of soil or with a roof structure, such as a lid. The inner surface of the control dam is typically waterproof and may be covered with a breathable material, such as geotextile or geomembrane, or comprise only soil with low permeability. The control dam can also be a container or another corresponding reservoir with a bottom and rocks, which defines its internal volume. The container or cistern may be made of steel, plastic or some other breathable material. The water is led Than open hazards, ditches, slopes or underground roof ditches / canals or rudder systems to the regulation dam's inlet pipes. Typically, the total internal volume of the control dam is> 0.1 m3, often> 1 m3, more typically 1-10 m3. If the control dam is shaped like a ditch, a hazard or the like, its depth is typically 0.1-2 m, 0.5-2 m, more typically 0.8-1.5 m.
    According to an embodiment of the invention, the quality of the water led to the filter pool and / or the quality of the water led out of the filter pool is monitored or monitored to evaluate the activity of the filter material. The quality of both incoming and outgoing water is advantageously monitored. Various parameters, such as phosphorus and / or heavy metal concentration, conductivity, pH, can be monitored, as they describe the activity of the filter pool. For example, on the conduit shape of the outgoing water [olar ladder, the filtration capacity of the filter material has been exceeded. Monitoring can be performed at predetermined time intervals or continuously. It is possible to monitor the quality of the water by taking samples of incoming unfiltered water and outgoing filtered water at predetermined time intervals, and by analyzing the samples in the laboratory. It is also possible to arrange one or more online sensors in connection with the inlets and drains, which sensors continuously monitor the water quality and send an alarm when the pre-determined spruce values are exceeded. The arrangement may thus comprise test and / or sensor means arranged to monitor the quality of the water which is led to the filter basin and / or the quality of the water which is led out of the filter basin in order to evaluate the activity of the filter material.
    In another embodiment of the invention, the quality of the water discharged from the filter basin is controlled or monitored. Water quality monitoring at the outflow Than filter pool provides valuable information on the condition and activity of the filter material. For example, if the concentration of phosphorus and / or heavy metals rises in the effluent, this indicates either a change in the incoming water or an exceeding of the capacity of the filter material.
    Water to be filtered can be led to the control dam by using existing Open hazards, ditches, slopes or underground drainage systems, canals or pipes. If the arrangement is used in connection with a stable or a enclosure for animals, a pallet farm, a dumping site or the like, the underground drainage system can be built at the same time as the regulating pond and the filter basin. The inlet of the control dam for the incoming water can be arranged to be at a desired location in the dam at a height.
    In an embodiment of the invention, the inlet may be arranged in the lower half of the control dam, near its bottom. It is also possible to arrange the inlet in the upper half of the control dam. Typically, the inlet and outlet of the regulating pond are located in exposed spirits of the pond, ie. if the drain is in the upper part of the dam, the inlet is in the lower part of the dam, and vice versa.
    According to an embodiment of the invention, the regulating pond has the drain in the upper part of the regulating pond. Water from an inlet in the lower part of the control dam is pumped to a drain in the upper part of the control dam, alternatively by using a pipe connection which protrudes from the lower part of the control dam to the drain. The arrangement thus comprises a pump system for guiding water from the inlet in the lower part of the control dam to the drain in the upper part of the control dam. It is possible to control the water flow from the control dam to the filter basin with the pump system, by selecting a breathable pumping speed and / or volume. This can enable the creation of a stable influence to the filter pool. Typically, the inlet in this embodiment is located in the lower part of the control dam.
    It is also possible to arrange a by-pass to the control dam. If the control dam is filled or flooded by water, or the amount of water becomes so large that the filter pool cannot handle it, it is possible to lead the water out of the control dam directly to the watercourse or the surrounding ground. The water flow can be controlled by pumping the water Than the control pond and allowing 11 controlled bypass from the control pond to the watercourses or to the surrounding ground, the sand filter or the like. The by-pass pipe is connected to the control dam, to another level, advantageously to a lower level, than the drain of the control dam.
    From the regulating pond, the water is led to the filter basin, for example by using a unifying pipe system between the pond and the basin. The connecting rudder system is arranged da Than the control dam to the filter basin, through which the rudder system the water is led from the control dam to the filter basin.
    The inlet of the filter basin may be located in the upper or lower half of the filter basin.
    The filter of the filter basin is advantageously located in the opposite spirit of the filter basin, whereby the flow direction can be from the bottom of the filter basin to the upper part of the filter basin or from the upper part to the bottom. In another embodiment, the control dam can be arranged in direct contact below the filter basin.
    The water can be distributed to the filter basin by using several distribution pipes, which distribute the water coming from the regulating pond evenly in the filter basin. The unifying rudder system can thus comprise a single rudder which branches near the filter basin or inside the filter basin to a number of distribution pipes. In another embodiment, the unifying pipe system comprises several connecting pipes between the control dam and the filter basin, which connecting pipes continue as individual distribution pipes inside the filter basin or are branched into a number of distribution pipes. The diameter of the distribution and connection pipes is typically 20100 mm, advantageously 40-60 mm. The water can be led into the filter basin, or it can be distributed by distributing or spraying it on the upper side of the filter basin.
    According to one embodiment, the water flow through the filter material can be controlled to a level of 0.001-1, advantageously 0.001-0.1 m / h (surface load).
    According to an embodiment of the invention, water is led to the filter basin, to its upper part, by using distribution pipes, which distribute the water to the upper part of the filter basin. The water is allowed to percolate downwards by gravity through the 12 filter material in the filter basin. At the bottom of the filter basin, an effluent system has been arranged, through which the filtered water is led either to a watercourse or to the surrounding ground.
    According to another embodiment of the invention, water is led to the filter basin, to its lower part, by using distribution pipes, which distribute the water to the lower part of the filter basin. The water is forced upwards through the filter material in the filter basin under the water's own pressure. In the upper part of the filter basin, an effluent system has been arranged, through which the filtered water is led either to a watercourse or to the surrounding ground.
    Regardless of the location of the effluent system, the water from the filter pool can be led directly to a watercourse, to the surrounding ground or it can be led to a separate sand or other soil filter, or it can be led as irrigation water for example to a greenhouse, a golf course etc.
    According to an embodiment of the present invention, the control dam also functions as a sedimentation dam. Phosphorus-containing water is collected in a collection basin or a ditch Than surrounding arable land or forest. The collection basin is arranged in front of the regulating pond in the direction of the water's flock. From the collection basin, the water is led to a sedimenting control dam via a pipe system, for example by using a pump system. The conduit system may comprise one or more tubes of suitable diameter.
    The arrangement may also comprise a separate sedimentation pond which is arranged before the regulation pond, so that the water is led first to the sedimentation pond and from there to a regulation pond and on to a filter basin. Metallate or similar material may be provided in the sedimentation pond to reduce the flow rate of the water. Sedimentation ponds or a sedimenting regulation pond are easy to tower under a excavator or the like. The sedinent can also be used as a phosphorus fertilizer or as a complement to commercial phosphorus fertilizers. According to one embodiment, it is possible to dose a suitable lime product, such as Ca (OH) 2, at the inlet to a sedimenting control pond, or at the inlet to a separate sedimentation pond. Then it is also possible to monitor the quality of the water when the water is led to the collection basin to the sedimentation pond and / or the quality of the water when the water is led out of the sedimentation pond.
    The filter basin may be filled with filter material comprising a mixture of inert inorganic material in particulate form, such as sand, as well as a lime product or gypsum material. According to an embodiment of the invention, the width of the filter basin is 0.5-10 m, and / or its depth is 0.5-1.5 m. The length of the filter basin varies according to the area Than in which the water collects, for example the size of the core.
    Geotextiles and geone membranes can also be used as lining for the filter pool, as well as the regulation dam. By geotextile is meant a permeable fabric, which is typically made of plastic, such as polypropylene or polyester. It is normally indigestible in a soil environment. Geotextile can be curled, tapered or heat bonded. Geomembrane is a water-based material, made of raw material that includes high molecular weight polymers.
    According to an embodiment of the invention, it is possible to arrange a gravel layer on the upper part and / or the bottom of the filter basin, which gravel layer has a particle size of 3-6 mm. The distribution trees and the effluent systems are advantageously arranged in the gravel layer. The gravel layer supports an even distribution of the water to the filter material in the filter basin.
    It is possible to arrange more than one control dam in series for the filter pool.
    This means that the water is led through a number of regulation dams before it is led to the filter pool. By arranging a number of control dams in series, it is possible to make the water distribution and water pressure more even, which improves the overall activity of the filter.
    According to a specific embodiment of the invention, the pipes, which have a diameter of approximately 40 mm, can be arranged on the bottom of the filter basin, which is filled with filter material comprising lime product and inorganic material in particulate form. The filter basin has a gravel layer on the top and bottom, extensive gravel with a particle size of 3-6 mm. The gravel layers each have a depth of approximately 0.2 m. The water to be purified flows upwards and is collected by the collecting pipes that are located in the upper part of the filter basin. Geotextile is used to line the filter basin.
    The invention is particularly suitable for arable land with high concentrations of leached phosphorus-heavy metal compounds and where the amount of water to be filtered is relatively low.
    The invention is schematically described in the following non-limiting figures, in which Figure 1 shows a first embodiment of the invention, Figure 2 shows a second embodiment of the invention, Figure 3 shows a third embodiment of the invention, Figure 4 shows filtration results of the embodiment in Figure 2, Figure shows filtration results of the embodiment in Figure 1, Figure 6 shows filtration results of the embodiment of Figure 3, and Figure 7 shows filtration results of the embodiment of Figure 3.
    Figure 1 shows a first embodiment of the invention. Water is led to a control dam 1 or a control tank by using an underground drainage pipe 2. The water level in the control dam 1 is marked with A and the flow direction in the arrangement with arrows. Water is pumped from the regulator 1 through the use of a pump 3 via the joining rudder system 4 to a filter basin 5. The joining rudder system extends from the lower part of the regulating jug 1 to its upper part.
    The filter basin 5 is filled with filter material comprising inorganic material in particulate form, such as sand, and a lime product. The water is led to the upper part of the filter basin 5 and it percolates through the filter material to the lower part of the filter basin. From the lower part of the filter basin 5, the filtered water is led out through an effluent system 6 to a watercourse 7, such as an a, a hay or a lake. It is also possible that the effluent system 6 does not extend the whole way to the watercourse 7, but that the filtered water is led to the surrounding ground.
    A by-pass 8 leads straight Than the control dam 1 to the watercourses 7 or possibly again to the surrounding ground. If the water level A rises in the control dam 1 above the by-pass 6 opening 9, the overflow is automatically led away from the control dam and the filter pool flooding is prevented. The bypass pipe 8 can also lead to a separate narcotics filter (not shown).
    Figure 2 shows a second embodiment of the invention. The flow direction in the arrangement is marked with arrows. Water is led to a first control dam 1 by using an underground drainage pipe 2. Due to height differences in the terrain, the water Than leads the first control dam 1 to a second control dam 1 ', by using a connecting pipe 11. The inlet 2 of the first control dam 1 'is arranged above the drain 11' of the first regulating dam 1. Correspondingly, the inlet 11 "of the second control dam 1 'is arranged at a higher level than the drain 4' of the second control dam 1 '.
    From the second regulating pond 1 'water is led via a unifying pipe system 4 to a filter basin 5. The filter basin 5 is filled with filter material comprising inorganic material in particulate form, such as sand, and a lime product. The water is led to the lower part of the filter basin 5 and it moves upwards through the filter bath. The collecting rudder system 10 is located in the upper part of the filter basin 5. From the upper part of the filter basin 5 the filtered water is led out by using a drain pipe 6 to a watercourse 7, such as an a, a hay or a lake. Figure 3 shows a third embodiment of the invention. This embodiment corresponds to that shown in Figure 2, except that only one control dam is used.
    Phosphorus removal from incoming and treated water is shown in Figures 4, 5, 6 and 7. The total amount of phosphorus is fed into the filter basin from the inflowing and outflowing water. In the data series in Figure 5, there are two discharge results, which are obtained by using slightly different filter pool materials. Figure 6 shows the performance of the filter pool under moderate load conditions while Figure 7 also includes data under heavy load. This can be observed from differences in the value of the Y-axis in Figures 6 and 7.
    In all situations, the total phosphorus is effectively separated. Average phosphorus reduction varies from 60-82% and even an average reduction of dissolved phosphate of 46-67 (:) / 0 is achieved.
    Although the invention has been described with reference to what at the time of writing appear to be the most practical and advantageous embodiments, it should be understood that the invention is not to be limited to the embodiments described above, but the invention is intended to include various modifications and equivalent technical solutions. attached claims. 17
    权利要求:
    Claims (9)
    [1]
    1. a regulating pond, which has
    [2]
    2. a bottom and rocks defining its inner volyn, - an inlet for incoming water Than a surrounding land,
    [3]
    3. a drain,
    [4]
    4. a filter basin, which comprises
    [5]
    A bottom and rock defining its inner volume;
    [6]
    Filter material according to the flag of claims 1 - 10, arranged in the internal volume of the filter basin,
    [7]
    7. an inlet for incoming water,
    [8]
    8. a drain, 9. an effluent pipe system for diverting water away from the filter basin, the regulating dam and the filter basin being arranged in contact with each other, for example via a connecting pipe system, so that the water is led from the regulating pond to the filter basin. Arrangement according to claim 12, characterized in that it comprises a pump system for guiding water from the inlet in the lower part of the control dam to the drain in the upper part of the control dam. Arrangement according to claim 12 or 13, characterized in that it comprises a by-pass connected to the control dam, to a different level than the drain of the control dam. Arrangement according to any one of the preceding claims 12 - 14, characterized in that it comprises test and / or sensor means arranged to monitor the quality of the water led to the filter basin and / or the quality of the water discharged from the filter basin to evaluate the filter material. activity. 1 / T --- 'ta: _,>, -, .....___ 4. .a) N 01 c .91J .. II r.).) 01 CD 0 Co 01 Total phosphorus pg / IN) CDcyi C) CD CD 0 0 28. 10.199 11. 3.1997 24.7.1998 6.12.1999 19.4.2001 1.9 .2002 14.1.2004 28.5.2005 10.10.2006 22.2.2006 Total phosphorus pg / I crr 8 C) 15. 3.2000 adAt 041) I / 8r1 d 'twin x 1 / 61-1 d Tuengul --- 23. 6.2000 1 10.2000 9. 1.2001 19. 4.2001 28. 7.2001 5. 11.2001 13. 2.2002 Total phosphorus pg / I NJ CA) CA) 42. crfCTIC.11C.71 0 CD Cs CS 0 CD 0C: D CS Cs CD 0 CD Cs Cs Cs 0 C: D Cs Cs 0 Total phosphorus pg / 1 Cs 0 QQCQO 0 0 0 0 0 C) 0 CD 0 0 cp Cs 0 CS 0 0 0% IIIUG111. I 1. Effluent P pg / I Ii 1. 12.1996 19. 6.1997 5. 1.1998 24. 7.1998 9. 2.1999 28.8.1999 15.3.2000 1.10.2000 19.4.2001 5.11.2001 24.5.2002 10.12.2002 A;: 4 F 1 r 1. .... -cam _ - Influent P pg / 1 1. Effluent P pg / 1 1 1 1. 12.1996 19. 6.1997 5. 1.1998 24. 7.1998
    [9]
    9. 2.1999 28.8.1999 15.3.2000 1.10.2000 19.4.2001 5.11.2001 24.5.2002 10.12.2002
    类似技术:
    公开号 | 公开日 | 专利标题
    Huisman et al.1974|Slow sand filtration
    McDowell et al.2008|Treatment of drainage water with industrial by‐products to prevent phosphorus loss from tile‐drained land
    CN1292999C|2007-01-03|Efficient ecological waste water treating apparatus and method
    US8940170B2|2015-01-27|Triple-chambered wetland biofilter treatment system
    CN107100261A|2017-08-29|A kind of novel rainwater is detained filtration system
    CN205189098U|2016-04-27|A rainwater garden for building district
    US11047125B2|2021-06-29|Regenerative stormwater conveyance system and method
    CN101284705A|2008-10-15|Tower type earthworm and ecological filter for treating sewage
    CN106698811A|2017-05-24|Surface runoff pollutant treatment system for small-catchment farmland
    SE1251002A1|2013-03-10|Filter material, its use and arrangements for reducing phosphorus and / or heavy metal loads in watercourses
    RU2358916C1|2009-06-20|Construction for purifying and control over quality of drainage water
    Willardson et al.1997|Reuse of drainage water from irrigated areas
    CN105600936A|2016-05-25|All-season running sewage land treatment system
    CN207537311U|2018-06-26|A kind of automatic control type ecological shore protection system for riverway water quality purification
    US20130032544A1|2013-02-07|Systems and methods for reducing phosphorous in phosphorous-containing outflows
    RU2137884C1|1999-09-20|System for carrying-away and purification of surface effluent
    Grinberga et al.2017|Nutrient removal by subsurface flow constructed wetland in the farm Mezaciruli
    CN107759021A|2018-03-06|A kind of automatic control type ecological shore protection system for riverway water quality purification
    Aulenbach et al.2010|Lake restoration using dissolved air flotation
    Fahlbeck Carlsson2021|Evaluation of a gross pollutant trap-biofilter stormwater treatment train: The Role Of Calcium Carbonate, Vegetation And Pre-Treatment Facility
    Meuser2013|Rehabilitation of soils in mining and raw material extraction areas
    CN210562551U|2020-05-19|Farmland ecological pond for reducing agricultural non-point source pollution
    CN202415323U|2012-09-05|Highway runoff pollution comprehensive treatment device for water resource protection area
    CN206156866U|2017-05-10|A grit chamber that is used for field irrigation aquatic heavy metal to purify
    Asmaliza et al.2013|Performance of artificial wetland in removing contaminants from storm water under tropical climate
    同族专利:
    公开号 | 公开日
    DE202012008602U1|2012-11-23|
    EE01208U1|2014-01-15|
    SE537680C2|2015-09-29|
    FI9856U1|2012-10-29|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FI89616C|1991-02-08|1993-10-25|Partek Ab|FOERFARANDE FOER MINSKNING AV FOSFOR- OCH TUNGMETALLBELASTNINGEN I VATTENDRAG, VILKEN BELASTNING FOERORSAKAS AV ODLINGSMARKER|CN104445460B|2014-11-14|2016-10-05|安徽建筑大学|A kind of honeycomb stone water environment dephosphorization repair materials|
    SE540368C2|2017-01-12|2018-08-14|Werec Water Ecosystem Recovery Ab|Drainage system for storm water|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FI20115888A|FI20115888A0|2011-09-09|2011-09-09|METHOD AND SYSTEM FOR REDUCING PHOSPHORUS AND HEAVY METAL LOADS IN WATERWATER, FILTER MATERIAL AND ITS USE|
    FI20116081|2011-11-03|
    SE1151260|2011-12-22|
    SE1251002A|SE537680C2|2011-09-09|2012-09-07|Filter material for reducing phosphorus and / or heavy metal loading in a watercourse|SE1251002A| SE537680C2|2011-09-09|2012-09-07|Filter material for reducing phosphorus and / or heavy metal loading in a watercourse|
    [返回顶部]