CN103043798B - Floating island system for remediation of eutrophic polluted water and water remediation method - Google Patents
Floating island system for remediation of eutrophic polluted water and water remediation method Download PDFInfo
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- CN103043798B CN103043798B CN201210544889.0A CN201210544889A CN103043798B CN 103043798 B CN103043798 B CN 103043798B CN 201210544889 A CN201210544889 A CN 201210544889A CN 103043798 B CN103043798 B CN 103043798B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
The invention provides a floating island system for remediation of eutrophic polluted water and a water remediation method. The floating island system comprises a matrix floating on the water surface, a micro-nano bubble generator arranged on the matrix, a control device arranged on the matrix and a plant soilless planting device on the matrix; and air bubbles generated by the micro-nano bubble generator has a diameter of 1 to 50 mum. The floating island system provided by the invention is convenient to operate and use and organically combines various treating manners; and moreover, an oxygen increasing manner adopted by the invention cannot damage an epilimnion of natural water and cannot change the ecological environment of the integral water area.
Description
Technical field
The present invention relates to the technical field of water pollution control, particularly relate to a kind of chinampa system and water body restorative procedure of repairing for eutrophicated polluted water.
Background technology
The situation of China's water pollution is commonplace at present, and the water pollution that especially some flow are less is more serious, and the eutrophication of present water body is very serious, and body eutrophication makes algal bloom, and then water body is further smelly.The method of removing at present body eutrophication both at home and abroad is mainly divided into medical method, biological process, engineering method.Wherein medical method is mainly to suppress separating out of N in water body, P element by dosing, and added amount of chemical is large, and has effective distribution problem, goes eutrophication to have difficulty for big area and darker water body; It is low and have a problem pockety that biological process mainly faces in the low and water body of biological activity dissolved oxygen situation; And existing engineering measure mainly comprise excavate Sediments, carry out water body deep aerating, water filling is rushed rare and lays plastics etc. on bed mud surface.Excavate bed mud, can reduce so that eliminate potentiality internal contamination source; Deep aerating, can regularly or irregularly take artificial lakebed deep aerating and delivery of supplemental oxygen makes between water and bed mud interface not occur anaerobic layer often maintaining oxygen condition, is conducive to suppress phosphorus in bed mud and the release of heavy metal.
But people's majority is to improve the dissolved oxygen content in water with mechanical stirring or aeration at present.General aerator, because the bubble diameter producing is larger, lift velocity is very fast, even injecting gas produces bubble in swallow, water body after bubble oxygenation also can not be deposited in the rising of bubble the position of deep water anoxic, and because person can not make fully to mix between the water body of water body after oxygenation and anoxic around, produce little effect; In addition, promote the mode of the mobile mixing of eutrophication water in conjunction with churned mechanically mode by holostrome aeration, the method is owing to need to making the most of water body in waters produce mobile, needed energy consumption is very high, and the mode of holostrome aeration has been destroyed the epilimnion in natural water, changed the ecotope in whole waters, the adjustment variation of the ecological chain causing is thus difficult to expect.
Summary of the invention
Based on this, be necessary the problem for prior art, a kind of simple in structure, easy to use chinampa system and the water body restorative procedure repaired for eutrophicated polluted water are provided.
Technical scheme of the present invention is as follows:
A chinampa system of repairing for eutrophicated polluted water, described system comprises the matrix that swims on the water surface, be arranged on micro-nano bubble generator on matrix, be arranged on control device on matrix, be arranged on plants planter on matrix, be arranged on the flow control apparatus for water on matrix;
Described micro-nano bubble generator comprises suction culvert, mixing wastewater with air unit, admission passage and injection unit;
One end of described suction culvert is connected with described mixing wastewater with air unit, and described admission passage communicates with described suction culvert, and described injection unit is connected with described mixing wastewater with air unit;
Described injection unit is arranged on the water surface below of polluted-water;
The diameter of the bubble that described micro-nano bubble generator produces is 1 to 50 μ m.
Therein in an embodiment, described injection unit comprises air water delivery line and micro-nano bubble generator, one end of described air water delivery line is connected with described mixing wastewater with air unit, the other end of described air water delivery line is connected with described micro-nano bubble generator, and described micro-nano bubble generator is arranged on below the water surface of polluted-water.
In an embodiment, described micro-nano bubble generator also comprises pretreatment unit therein, and described pretreatment unit is arranged on the front end of described suction culvert, and water enters suction culvert after pretreatment unit is processed.
In an embodiment, described matrix is made up of the material that can swim on the water surface therein, and described matrix is resin cartridge, floating drum or white foam, and described white foam is ethene, polyethylene, polypropylene or urethane.
Therein in an embodiment, described matrix surface is also provided with for the implantation hole of planting plants or planting groove, in described implantation hole or planting groove, be filled with plant growth medium, in described implantation hole or planting groove, the root system of the waterplant of plantation is directly immersed in eutrophicated polluted water.。
Therein in an embodiment, described chinampa system also comprises chemicals dosing plant, described chemicals dosing plant comprises medicine storage tanks and drug-feeding tube, one end of described drug-feeding tube is connected with described medicine storage tanks, the other end of described drug-feeding tube stretches into below the water surface of described polluted-water, and described medicine storage tanks is arranged on described matrix.
In an embodiment, described chinampa system also comprises the whipping appts under water of horizontal direction therein, and described whipping appts is under water fixed on described matrix and is arranged on below the horizontal plane of polluted-water.
In an embodiment, described chinampa system also comprises the captation and the flow control apparatus for water that are fixed on matrix therein, and described captation is connected with whipping appts under water by pipeline, and described micro-nano bubble generator is placed on captation inside.
Therein in an embodiment, described control device comprises that operating panel, water level sensor, pressure gauge sensor, pressure valve, gas adjusts valve, dosing control valve and central processing unit from pipette;
Described water level sensor is arranged on the inside of described mixing wastewater with air unit, and described gas is adjusted valve from pipette and is arranged on admission passage, and described pressure gauge sensor and pressure valve are arranged on air water delivery line, and described dosing control valve is arranged on chemicals dosing plant.
A kind of water body restorative procedure, uses chinampa system of repairing for eutrophicated polluted water as above.
The invention has the beneficial effects as follows:
1 the present invention has considered promotion water body flow simultaneously, has increased dissolved oxygen, has repaired three factors of biologic chain, considers the reparation problem of polluted-water from three aspects; First the present invention is only promoting among a small circle and is controlling water body flow; Secondly the residence time that the micro-nano gas that the micro-nano bubble generator that the present invention adopts produces ducks in drink is long, and the present invention repairs the biologic chain of water body by increasing dissolved oxygen again;
2 chinampa of the present invention system operations are easy to use, multiple processing mode is organically combined, and oxygenation way of the present invention can not destroy the epilimnion of natural water, can not change the ecotope in whole waters;
3 chinampa of the present invention systems are material cycle paths of a kind of partial water environmental improvement, can fan out from point to area, and improve the overall ecosystem.
Brief description of the drawings
Below in conjunction with concrete drawings and the specific embodiments, the present invention is further elaborated.
Fig. 1 is the overall schematic of an embodiment of chinampa system of repairing for eutrophicated polluted water of the present invention;
Fig. 2 is the schematic top plan view of chinampa system of repairing for eutrophicated polluted water of the present invention;
Fig. 3 is the schematic diagram of micro-nano bubble generator of the present invention;
Fig. 4 is the overall schematic of another embodiment of chinampa system of repairing for eutrophicated polluted water of the present invention.
Embodiment
The invention provides a kind of chinampa system and method for new reparation eutrophicated polluted water, chinampa of the present invention system adopts new oxygenation way, can increase oxygen to the layer of oxygen deficient of polluted-water, and then the aerobic reaction of the water sludge interface of promotion polluted-water bottom, and repair the material balance in anoxic water body.Below in conjunction with specific embodiment, the present invention is described in further details.
Referring to Fig. 1 to Fig. 4, the invention provides a kind of chinampa system of repairing for eutrophicated polluted water, described system comprises the matrix 1 that swims on the water surface, is arranged on the micro-nano bubble generator 2 on matrix and is arranged on the control device 3 on matrix; Described micro-nano bubble generator 2 comprises suction culvert 21, mixing wastewater with air unit 22, admission passage 23 and injection unit; One end of described suction culvert 21 is connected with described mixing wastewater with air unit 22, and described admission passage 23 communicates with described suction culvert, and described injection unit is connected with described mixing wastewater with air unit 22; Described injection unit is arranged on the water surface below of polluted-water; The diameter of the bubble that described micro-nano bubble generator produces is 1 to 50 μ m, and wherein diameter is that the bubble of 1 to 20 μ m accounts for more than 50%.
Matrix in the chinampa system of the present embodiment floats on the surface, and is mainly used in providing the installation site of micro-nano bubble generator and control device etc.; Described micro-nano bubble generator is the main part of chinampa of the present invention system, is mainly used in occurring micro-nano bubble; Controlling System is mainly used in controlling whole chinampa system, realizes the automatization of chinampa system, and can record the water quality condition of whole polluted-water by Controlling System etc.
Micro-nano bubble generator in the present embodiment is mainly the gas-liquid mixture fluid high speed rotating under pressure that makes to enter micro-nano bubble generator, , in the time that the liquids and gases of high speed rotating spray from the jet orifice of injection unit at suitable pressures, due to the effect that multiplies each other on the speed of rotation of superelevation and the mechanics of gas-liquid density ratio (1: 1000) of nozzle gas-liquid mixture, between gas-to-liquid contact interface, produce powerful at a high speed shearing and high-frequency pressure variation, form artificial extreme condition, under this condition, generate a large amount of microns, when nano grade air bubbles, there is the polymerizable molecular of smashing group, form the effect of subset active water, and the ionization of small portion water molecules can be decomposed, can in micro-nano bubble space, produce active oxygen, oxonium ion, the radical ion such as hydrogen ion and hydroxide ion, especially hydroxyl free radical has the reduction potential of superelevation, there is superpower oxidation effectiveness and can decompose the pollutent that is also difficult to decomposition in eutrophication water under normal condition, realize the purification of water quality.The dissolution rate that micro-nano gas ducks in drink exceedes 85%, more than dissolved oxygen concentration can reach 10mg/l, and micro-nano bubble is to remain in for a long time in water in the mode of bubble, its lift velocity is approximately 3 hours/meter, can be along with the consumption of dissolved oxygen constantly supplements active oxygen in water, for the microorganism of processing water pollutant, absorption nutritive substance provides sufficient active oxygen, strong oxidizing property ionic group, and ensure the reaction times of active oxygen abundance.Micro-nano bobble rise velocity is slow; and in the water body around most micro-nano bubbles are dissolved in uphill process and can not resemble millimeter, rise to the water surface centimetre-sized bubble; can not destroy the ecologic structure of original water body; this is that existing aeration oxygen replenishing technology can not be compared; farthest protect ecosystem, and fundamentally changed the habitable environment of swallow.
General, surface flotation one deck algae of polluted-water, the inside of polluted-water can be from the water surface according to temperature and under can be divided into high temperature water layer and low temperature water layer, not anoxic of the surface of polluted-water, but water body below the water surface is covered anoxic by algae because of the water surface.Therefore how giving the water oxygenation below the water surface is the major issue that solves body eutrophication.The bubble diameter that existing aerator produces is larger, lift velocity is very fast, even aeration in swallow, water body after bubble oxygenation also can not be deposited in along with the rapid rising of bubble the oxygen-starved area of deep water, and water body after oxygenation is difficult to fully mix with anoxic water body around.And the diameter of the bubble that micro-nano bubble generator of the present invention produces is 1 to 50 μ m, and number of bubbles is many, volume is little, lift velocity is very slow, can rest on for a long time in water, therefore can well, to the oxygen-starved area complement lysis oxygen in water, solve like this problem of the dissolved oxygen in lack of water region, can make anoxic water body around have time enough to mix mutually with the water body with micro-nano bubble simultaneously.
Preferably, as a kind of embodiment, described injection unit comprises air water delivery line 24 and micro-nano bubble generator 25, one end of described air water delivery line 24 is connected with described mixing wastewater with air unit 22, the other end of described air water delivery line 24 is connected with described micro-nano bubble generator 25, and described micro-nano bubble generator 25 is arranged on below the water surface of polluted-water.In the present embodiment, the position of micro-nano bubble generator can arrange as required, can operate the degree of depth of micro-nano bubble generator in water by control device, more excellent, micro-nano bubble generator can be placed on to water bottom, can carry out oxygenation to water bottom like this, and then can suppress overflowing of water bottom Nitrogen In Sediment phosphorus.Micro-nano bubble generator is preferably disposed on the position near water bottom.
Preferably, as a kind of embodiment, described chinampa system also comprises the whipping appts under water 5 of horizontal direction, and described whipping appts under water 5 is fixed on described matrix 1 and is arranged on below the horizontal plane of polluted-water.In the present embodiment, adopt the whipping appts under water of horizontal direction, can expand micro-nano bubble distribution range in the horizontal direction, make fully mixing with water body around of micro-nano bubble maximum possible, carry out oxidizing reaction, make not occur anaerobic layer between water and bed mud interface, maintain oxygen condition, be conducive to suppress the nitrogen phosphorus release of bed mud.Described whipping appts under water can be the whipping appts of conventional flabellum shape.Horizontal throw between described whipping appts under water and micro-nano bubble generator is 10 to 50 centimetres, and vertical range between micro-nano bubble generator is 10 to 30 centimetres.So neither can affect micro-nano bubble generator and air water delivery line, can better bring into play stirring action simultaneously.Preferably, as a kind of embodiment, referring to Fig. 4, described chinampa system also comprises the captation 6 and the flow control apparatus for water that are fixed on matrix, described captation 6 is connected with the whipping appts under water 5 of horizontal direction by pipeline 7, and described micro-nano bubble generator 25 is placed on captation 6 inside, described flow control apparatus for water is arranged on the pipeline that described captation is connected with described whipping appts under water.Captation in the present embodiment and flow control apparatus for water are used for controlling the current that contain micro-nano bubble, now upper strata water body is collected in captation, enter whipping appts by pipeline, the oxygen deprivation water body of lower floor also enters whipping appts simultaneously, in whipping appts, realize upper strata water body, the mixing of the water body that comprises micro-nano bubble and lower floor's oxygen deprivation water body, then discharge, water body flow in can promoting so among a small circle, and can not destroy the distribution of whole water body, the flow direction of the current that simultaneously make the distribution range of micro-nano bubble and contain micro-nano bubble and size are controlled, thereby can better repair polluted-water.Micro-nano bubble generator is placed in captation, and captation is connected with the whipping appts under water of horizontal direction below being arranged on the water surface by conduit.The water that contains a large amount of micro-bubbles that in the present embodiment, micro-nano bubble generator produces, by conduit is transported to whipping appts under the current suction producing at agitator, and by whipping appts and anoxic water mixing around.Captation in the present embodiment is preferably funnel shaped captation, and described captation can be arranged on below the water surface of polluted-water, and now the distance of the water surface of captation and polluted-water is at least 10 centimetres; Or more than captation also can be arranged on the water surface of polluted-water, now captation and flow control apparatus for water play the effect of controlling micro-nano bubble current.
Preferably, as a kind of embodiment, described micro-nano bubble generator also comprises pretreatment unit 26, and described pretreatment unit arranges 26 front ends at described suction culvert 21, and water enters suction culvert 21 after pretreatment unit 26 is processed.In the present embodiment, can directly from polluted-water, fetch water by water suction pump 27, and in order to protect micro-nano bubble generator, just enter suction culvert after water body is processed in advance.
Preferably, as a kind of embodiment, described pretreatment unit 26 is filter screen, filter screen case or other strainers.Described pretreatment unit can be also hyperfiltration membrane assembly, and the treatment capacity of described hyperfiltration membrane assembly is 5m
3/ hour.Because the small volume of chinampa of the present invention system, therefore the treatment capacity of hyperfiltration membrane assembly can be less, and the volume of the mixing wastewater with air unit in the present embodiment is 0.1m
3.The handiness that whole chinampa system is set is like this larger.
Preferably, as a kind of embodiment, described matrix 1 is made up of the material that can swim on the water surface, and described matrix is resin cartridge, floating drum or white foam, and described white foam is ethene, polyethylene, polypropylene or urethane.This is for chinampa of the present invention system can be swum on the water surface.Described matrix can be spliced by several matrix block, facilitates like this convenience of recycling and the transport of chinampa system.
Preferably, as a kind of embodiment, described matrix 1 surface is also provided with the implantation hole 11 for planting plants, described matrix surface is also provided with for the implantation hole of planting plants or planting groove, in described implantation hole or groove, be filled with plant growth medium, the root system of the waterplant of planting in described implantation hole or planting groove is directly immersed in eutrophicated polluted water.The present embodiment is filling plant growth matrix in described implantation hole, and described plant growth medium can be fixed waterplant simultaneously; Planting aquatic plants in described implantation hole.By being set in the system of chinampa, waterplant can form the nutritive substance in water that absorbs taking chinampa system as core, form the environment that is suitable for microorganism and big or small Fish Survival around aquatic vegetation, simultaneously, chinampa system can attract the algae of the water surface to ballow with the water body that comprises micro-nano bubble, suppress algal grown, and algae is decomposed in ballow, reduce the generation of wawter bloom phenomenon; The algae of part can be salvaged and directly be reduced the nutrition content in water by the isolation absorption of matrix; Fundamentally improve the material cycle of eutrophication water.The movement referring to along with matrix is salvaged in the isolation absorption of so-called matrix, and the algae of the water surface can be adsorbed near of matrix, then artificial salvaging.When captation is arranged on below the polluted-water water surface, the root of waterplant should, near captation, be conducive to the oxygen supply of the root of waterplant like this.
Preferably, as a kind of embodiment, described chinampa system also comprises chemicals dosing plant, described chemicals dosing plant comprises medicine storage tanks 41 and drug-feeding tube 42, one end of described drug-feeding tube 42 is connected with described medicine storage tanks 41, the other end of described drug-feeding tube 42 stretches into below the water surface of described polluted-water, and described medicine storage tanks 41 is arranged on described matrix.The present embodiment combines oxygenation way and chemicals treatment mode, determines whether according to actual needs dosing and chemical feeding quantity, can realize so the accurate dosing of fixed point, avoids affecting overall water body environment.
Preferably, as a kind of embodiment, described control device 3 comprises that operating panel, water level sensor 31, pressure gauge sensor 32, pressure valve 33, gas are from pipette adjustment valve 34, dosing control valve and central processing unit; Described water level sensor 31 is arranged on the inside of described mixing wastewater with air unit 22, described gas is adjusted valve 34 from pipette and is arranged on admission passage 23, described pressure gauge sensor 32 and pressure valve 33 are arranged on air water delivery line 24, and described dosing control valve is arranged on chemicals dosing plant.Control device in the present embodiment is used for controlling whole chinampa system, and all operations carries out on operating panel; Wherein control gas by the information of water level sensor and make the water level in mixing wastewater with air unit maintain preset level from pipette adjustment valve, and obtain the gas dissolving water of preset concentration; Detect the pressure in mixing wastewater with air unit by pressure gauge sensor, regulate the pressure in mixing wastewater with air unit by pressure valve.
When use, first absorb water and enter pretreatment unit from polluted-water by water suction pump, enter suction culvert through pretreatment unit water after treatment, now admission passage is negative pressure, thereby self-priming gas, in mixing wastewater with air unit, form the pressure fluid of gas-liquid mixed, then mixing wastewater with air liquid enters micro-nano bubble generator by air water delivery line, produce micro-nano bubble by the effect of micro-nano bubble generator, micro-nano bubble enters anoxic water body, water body is carried out to oxygenation, change the anoxic condition of water body.
Chinampa system of repairing for eutrophicated polluted water of the present invention organically combines waterpower, biology and biological chemistry, high-effect, less energy-consumption, and do not change the environment of whole water body, be a kind of eco-friendly water restoration system.
Based on same design, the present invention also provides a kind of method of utilizing above-mentioned chinampa system to repair eutrophicated polluted water, as long as the chinampa system for eutrophicated polluted water reparation in above-described embodiment is placed on to polluted-water, in the time that water body scope is larger, can moved by hand chinampa system.
Finally, it should be noted that, in this patent document, the relational terms such as first, second grade is only for an entity or operation are separated with another entity or operational zone, and not necessarily requires or imply and between these entities or operation, have any relation or sequentially.And, in this patent document, term " comprises ", " comprising " or its any other variant, it is intended to contain but not exclusive inclusion, thereby make to comprise process, method, article or the equipment of a series of key elements, not only comprise these key elements, but also comprise and clearly not listing and other key elements that those skilled in the art can know, or be also included as the known requisite key element of these processes, method, article or equipment.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (8)
1. a chinampa system of repairing for eutrophicated polluted water, is characterized in that, described system comprises the matrix that swims on the water surface, is arranged on the micro-nano bubble generator on matrix and is arranged on the control device on matrix;
Described micro-nano bubble generator comprises suction culvert, mixing wastewater with air unit, admission passage and injection unit;
One end of described suction culvert is connected with described mixing wastewater with air unit, and described admission passage communicates with described suction culvert, and described injection unit is connected with described mixing wastewater with air unit;
Described injection unit is arranged on the water surface below of polluted-water;
The diameter of the bubble that described micro-nano bubble generator produces is 1 to 50 μ m;
Described chinampa system also comprises the whipping appts under water of horizontal direction, and described whipping appts is under water fixed on described matrix and is arranged on below the horizontal plane of polluted-water;
Described chinampa system also comprises the captation and the flow control apparatus for water that are fixed on matrix, described captation is connected with whipping appts under water by pipeline, and described micro-nano bubble generator is placed on captation inside, described flow control apparatus for water is arranged on the pipeline that described captation is connected with described whipping appts under water;
Described captation and described flow control apparatus for water are used for controlling the current that contain micro-nano bubble.
2. chinampa according to claim 1 system, it is characterized in that, described injection unit comprises air water delivery line and micro-nano bubble generator, one end of described air water delivery line is connected with described mixing wastewater with air unit, the other end of described air water delivery line is connected with described micro-nano bubble generator, and described micro-nano bubble generator is arranged on below the water surface of polluted-water.
3. chinampa according to claim 2 system, is characterized in that, described micro-nano bubble generator also comprises pretreatment unit, and described pretreatment unit is arranged on the front end of described suction culvert, and water enters suction culvert after pretreatment unit is processed.
4. chinampa according to claim 1 system, is characterized in that, described matrix is made up of the material that can swim on the water surface, and described matrix is resin cartridge or white foam, and described white foam is polyethylene, polypropylene or urethane.
5. chinampa according to claim 4 system, it is characterized in that, described matrix surface is also provided with for the implantation hole of planting plants or planting groove, in described implantation hole or planting groove, be filled with plant growth medium, in described implantation hole or planting groove, the root system of the waterplant of plantation is directly immersed in eutrophicated polluted water.
6. chinampa according to claim 1 system, it is characterized in that, described chinampa system also comprises chemicals dosing plant, described chemicals dosing plant comprises medicine storage tanks and drug-feeding tube, one end of described drug-feeding tube is connected with described medicine storage tanks, the other end of described drug-feeding tube stretches into below the water surface of described polluted-water, and described medicine storage tanks is arranged on described matrix.
7. chinampa according to claim 6 system, is characterized in that, described control device comprises that operating panel, water level sensor, pressure gauge sensor, pressure valve, gas adjusts valve, dosing control valve and central processing unit from pipette;
Described water level sensor is arranged on the inside of described mixing wastewater with air unit, and described gas is adjusted valve from pipette and is arranged on admission passage, and described pressure gauge sensor and pressure valve are arranged on air water delivery line, and described dosing control valve is arranged on chemicals dosing plant.
8. a water body restorative procedure, is characterized in that, right to use requires the chinampa system of repairing for eutrophicated polluted water described in 1～7 any one.
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| CN203048672U (en) * | 2012-12-14 | 2013-07-10 | 蓝星环境工程有限公司 | Floating island system for restoring polluted eutrophic water body |
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2012
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2932155B2 (en) * | 1995-02-10 | 1999-08-09 | アイサワ工業株式会社 | Water purification method and equipment used for it |
| WO2006121074A1 (en) * | 2005-05-13 | 2006-11-16 | Tashizen Techno Works Co., Ltd. | Method of purifying water area |
| JP2011189254A (en) * | 2010-03-12 | 2011-09-29 | Kumamoto Univ | Water purifying method, and water purifier |
| CN201942552U (en) * | 2010-12-24 | 2011-08-24 | 沈阳隆达环保节能集团有限公司 | Aerating device in contact oxidation method |
| CN102424499A (en) * | 2011-10-12 | 2012-04-25 | 长江水利委员会长江科学院 | Large movable water purifying system for enclosed water area |
| CN203048672U (en) * | 2012-12-14 | 2013-07-10 | 蓝星环境工程有限公司 | Floating island system for restoring polluted eutrophic water body |
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