CN102010042B - Diatomite dephosphorization and algae control method - Google Patents
Diatomite dephosphorization and algae control method Download PDFInfo
- Publication number
- CN102010042B CN102010042B CN2010105052502A CN201010505250A CN102010042B CN 102010042 B CN102010042 B CN 102010042B CN 2010105052502 A CN2010105052502 A CN 2010105052502A CN 201010505250 A CN201010505250 A CN 201010505250A CN 102010042 B CN102010042 B CN 102010042B
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- water
- dephosphorization
- zeyssatite
- diatomite
- algae
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- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Water Treatment By Sorption (AREA)
- Removal Of Specific Substances (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a diatomite dephosphorization and algae control method for open water bodies, such as lakes, reservoirs, scenic water, and the like. A diatomite dephosphorization and algae control facility comprises a water intake pump room, a mixing pond, a grid flocculation tank, an inclined pipe sedimentation tank and an effluent pump room, wherein a discharging opening of a diatomite feeding device extends into the mixing pond which is provided with a stirrer, and the grid flocculation tank and the inclined pipe sedimentation tank are provided with sludge discharge pipelines connected with a sludge collecting tank. Water in the open water bodies or branches is conveyed into the diatomite dephosphorization and algae control facility for dephosphorization treatment and then drained back to the water bodies to reduce the frequency and the strength of algal blooms of the water bodies. Proved by in-site tests of the lakes and the treatment of civil scenic water bodies, the invention has remarkable effect.
Description
Technical field
The present invention relates to the eutrophication control and the restoration of the ecosystem of open water body such as lake, reservoir, landscape water, be specifically related to open water body zeyssatite such as lake, reservoir, landscape water dephosphorization algae control method.
Background technology
Algal bloom is the conspicuous contradiction of eutrophication, whenever breaks out wawter bloom one time, and water ecological environment just experiences once " shock ".The 26S Proteasome Structure and Function of wawter bloom heavy damage aquatic ecosystem year after year; Fish are mixed, and type miniaturized, submerged vegetation are withered away in a large number, lakeside wetland serious degradation ... become the common problem of many lakes, reservoir, landscape water, and the algal bloom control is the task of top priority of current eutrophication control.
Effectively nutrition loads such as the nitrogen in the reduction water body, phosphorus make its basic substance of algal grown forfeiture, are the fundamental ways that wawter bloom is administered.For a long time; China's eutrophication control follows the strategy of the two controls of nitrogen phosphorus always; But for the big water body of openings such as Hu Ku; Limited environmental protection input is difficult in a short time significantly to cut down simultaneously nitrogen and phosphorus load, comprises that " three lakes " the wawter bloom situation occurred frequently of Taihu Lake, Chaohu, Dian Chi does not obtain basic alleviation, so present stage is necessary the strategies of the two controls of nitrogen phosphorus are introspected and optimized.
Relatively control nitrogen and control phosphorus, control phosphorus is more effective, also more economical.At first; Nitrogen cycle is to circulate fully or claim gaseous type circulation in the biosphere; Except that natural processes such as thunderbolt, lightning, rainfall can be fixed to the nitrogen in the atmosphere in the water body, the biological nitrogen fixation of algae and bacterium also can provide almost inexhaustible nitrogenous source for water body.Therefore, even controlled the input of nitrogen effectively, the algae in the water body finally can not be restricted because of nitrogen stress yet.Reviewing the phosphorus circulation then is not exclusively circulation or the circulation of title appositional pattern; Be stored at phosphorus in rock and the soil through natural erosion or artificial exploitation; Get into water body with runoff or effluent sewage discharging, therefore as long as effectively controlled the input of phosphorus, the algae in the water body will be restricted because of lacking phosphorus.Through relatively the circulation of nitrogen phosphorus in biosphere is visible, the input of controlling phosphorus effectively can limit algae grows in the water body, and control nitrogen then is invalid.Next, it is more economical that control phosphorus is controlled nitrogen.Denitrogenation need be carried out advanced treatment, can not use physico-chemical method, can only carry out nitrated, denitrification with mikrobe, and cost is higher.And the dephosphorization ratio is easier to, and generally can reach 80~95% clearance through flocculation sediment, and cost is lower.
Nitrogen phosphorus is the essential element of algal grown, from seeing that in logic the two control one is the may command body eutrophication.Prevent and treat algal bloom, control phosphorus is not only effective, and more economical.Especially present stage, utilize limited environmental protection to drop into and implement to concentrate control phosphorus, the algal bloom control just can manifest effect.
Summary of the invention
The object of the present invention is to provide the method for preventing and treating of opening algae and water wawter blooms such as a kind of more economical, quicker, safer lake, reservoir, landscape water.
For reaching this purpose, the present invention adopts following technical scheme:
(1), for large-scale open water bodys such as Hu Ku, zeyssatite dephosphorization facility is set its tributary is come water to implement dephosphorization to purify, cut down the phosphorus load in lake (storehouse) significantly, thereby progressively reduce the concentration of phosphorus in the storehouse, lake, alleviate the frequency and the intensity of algae and water wawter bloom;
For middle-size and small-size open water bodys such as the local waters of Hu Ku and landscape water; The disembarkation of drawing water of diatomite dephosphorization facility is set to be implemented to flow back to water body again after dephosphorization purifies; Progressively reduce the concentration of phosphorus in the water body; And by rationally laying the position relation of intake, delivery port; Form stable plug-flow flow field; Improve the flowability of water body, alleviate the frequency and the intensity of algae and water wawter bloom;
(2), zeyssatite dephosphorization facility includes water intaking pump house, mixing pit, grid flocculation, the tube settler that is provided with step by step and goes out water plant; Zeyssatite feeding device discharge port extends mixing pit; Be provided with whisking appliance in the described mixing pit, grid flocculation is provided with the spoil disposal pipeline with tube settler and is connected with mud-collecting slot;
(3), the dephosphorization treating processes is: the water intaking of zeyssatite dephosphorization facility gets into mixing pit with addition of zeyssatite, makes zeyssatite and comes to flow into grid flocculation certainly after the water short mix; In flocculation basin, stir, form the flco macrobead, then get into the upward flow tube settler through waterpower; Realize mud-water separation in the tube settler, clear water flows into out water plant from water outlet, and water body is returned in pumping; Mud in grid flocculation and the tube settler enters mud-collecting slot, and the outward transport of mummification is regularly carried out landfill and disposed.
Zeyssatite dephosphorization facility has characteristics such as total phosphorus is removed efficient height, construction and working cost is low, occupation of land is few, and conventional water-purifying process has tangible comparative advantages.
The present invention administers through the insitu soil test and the city appearance water body in lake, achieves noticeable achievement.Dephosphorization control algae theory has also greatly improved the Technological Economy property of administering technology; The zeyssatite dephosphorization process that the present invention adopted has characteristics such as total phosphorus is removed efficient height, construction and working cost is low, occupation of land is few, and conventional water-purifying process has tangible comparative advantages.
Description of drawings
Fig. 1 is a process flow diagram of the present invention.
Fig. 2 is applicable to the layout of the large-scale open water body in storehouse, lake for the present invention.
Fig. 3 is that the present invention is for the local waters of Hu Ku and the layout of the middle-size and small-size open water body of landscape water.
Embodiment
Below in conjunction with specific examples the present invention is described further, but protection scope of the present invention is not limited in this.
1, instance one: referring to Fig. 1,2.Lake original position dephosphorization control algae experimental project selects the serious water of large-size lake wawter bloom to the lakeside, has made up the about 15000m of area
2, the about 15000m of the water yield
3The test lake region, the border, test site adopts the flexible enclosure 1 of waterproof PVC to cut apart with outer lake body.The land is to building a 7000m
3The zeyssatite dephosphorization facility 2 of/d scale flows back to the test lake region after the extracting lake water disembarkation dephosphorization.Carried out the long run test in 1 year by a definite date; Lake body total phosphorus concentration 0.2~0.4mg/L outside the test site; Zeyssatite dephosphorization facility moves continuously, owing to can not intercept the inside and outside water yield exchange in test site fully, total phosphorus concentration maintains the low-level relatively of 1.1~1.3mg/L all the time in the test site.The lake breakout of water bloom phase in 6~September, lake body algae density is up to 10 outside the test site
9Mells/L, algae density is controlled at 10 all the time in the test site
6In the mells/L, visually demonstrate the obvious contrast of " ten thousand green lake surfaces one are checked up " inside and outside the test site.
Zeyssatite dephosphorization facility major technique economic parameters is following, and total phosphorus removes efficient height, construction and working cost is low, it is few to take up an area of, and conventional water-purifying process has tangible comparative advantages.
Total tp removal rate: >=90%;
Nitrogen removal rate: 20~70%;
Main construction fabrication cost: 700,000 yuan;
Ton water fabrication cost: $100/m
3
Ton water running expense: $0.15/m
3
Main construction is taken up an area of: 138.8m
2
Ten thousand tons of water conservancy project journeys are taken up an area of: 198.2m
2/ 10
4m
3
2, instance two: referring to Fig. 1,3.City appearance water body dephosphorization control algae engineering adopts the zeyssatite dephosphorization process to 3.0 * 10
5m
3City appearance water body is implemented the algal bloom control.Build a 25000m at landscape water body one end
3The zeyssatite dephosphorization facility 2 of/d scale flows back to the other end of landscape water body after the dephosphorization through water-carriage system 3 disembarkation of drawing water.Landscape water body total phosphorus concentration 0.1~0.2mg/L before the engineering construction, summer, algae density was up to 10
8Mells/L, water body is deep green; The water body total phosphorus concentration is controlled at below the 0.05mg/L behind the engineering construction, and algae density is controlled at 10
4In the mells/L, water body is light green.
Owing to be located in the old town; The major economic indicators of this project slightly are inferior to aforementioned lake original position dephosphorization control algae experimental project; But still conventional water-purifying process has tangible comparative advantages, shows characteristics such as total phosphorus is removed efficient height, construction and working cost is low, occupation of land is few.
Total tp removal rate: >=80%;
Nitrogen removal rate: 10~40%;
Main construction fabrication cost: 337.3 ten thousand yuan;
Ton water fabrication cost: $134.9/m
3
Ton water running expense: $0.18/m
3
Main construction is taken up an area of: 563.6m
2
Ten thousand tons of water conservancy project journeys are taken up an area of: 225.5m
2/ 10
4m
3
Claims (1)
1. zeyssatite dephosphorization algae control method is characterized in that:
(1), for Hu Ku, zeyssatite dephosphorization facility is set its tributary is come water to implement dephosphorization to purify, cut down the phosphorus load of Hu Ku significantly, thereby progressively reduce the concentration of phosphorus in the storehouse, lake, alleviate the frequency and the intensity of algae and water wawter bloom;
Local waters and landscape water for Hu Ku; The disembarkation of drawing water of diatomite dephosphorization facility is set to be implemented to flow back to water body again after dephosphorization purifies; Progressively reduce the concentration of phosphorus in the water body; And by rationally laying the position relation of intake, delivery port; Form stable plug-flow flow field; Improve the flowability of water body, alleviate the frequency and the intensity of algae and water wawter bloom;
(2), zeyssatite dephosphorization facility includes water intaking pump house, mixing pit, grid flocculation, the tube settler that is provided with step by step and goes out water plant; Zeyssatite feeding device discharge port extends mixing pit; Be provided with whisking appliance in the described mixing pit, grid flocculation is provided with the spoil disposal pipeline with tube settler and is connected with mud-collecting slot;
(3), the dephosphorization treating processes is: the water intaking of zeyssatite dephosphorization facility gets into mixing pit with addition of zeyssatite, makes zeyssatite and comes to flow into grid flocculation certainly after the water short mix; In flocculation basin, stir, form the flco macrobead, then get into the upward flow tube settler through waterpower; Realize mud-water separation in the tube settler, clear water flows into out water plant from water outlet, and water body is returned in pumping; Mud in grid flocculation and the tube settler enters mud-collecting slot, and the outward transport of mummification is regularly carried out landfill and disposed.
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CN2010105052502A CN102010042B (en) | 2010-10-09 | 2010-10-09 | Diatomite dephosphorization and algae control method |
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CN2010105052502A CN102010042B (en) | 2010-10-09 | 2010-10-09 | Diatomite dephosphorization and algae control method |
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CN102010042B true CN102010042B (en) | 2012-06-13 |
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CN105540808B (en) * | 2016-01-18 | 2018-12-18 | 北京绿景行科技发展有限公司 | A kind of method of medium eutrophic water body dephosphorization control algae |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1793071A (en) * | 2004-12-18 | 2006-06-28 | 张小勇 | Series mixed biological manure filling agent material made by flyash and mfg. process thereof |
CN1830541A (en) * | 2006-01-20 | 2006-09-13 | 王家强 | Modified natural and self-making floating carrier and mesopore molecular sieve denitrogen dephosphorus material, its preparation and application |
CN101125688A (en) * | 2007-07-13 | 2008-02-20 | 常州市天歌高分子科技有限公司 | Nuisanceless algae processing agent and using method thereof |
CN101362623A (en) * | 2008-08-18 | 2009-02-11 | 江苏省嘉庆水务发展有限公司 | Sewage water treatment method by essential diatom earth cooperation with biochemical action |
Family Cites Families (1)
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JP2007319792A (en) * | 2006-06-01 | 2007-12-13 | Daicen Membrane Systems Ltd | Waste water treatment method |
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Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1793071A (en) * | 2004-12-18 | 2006-06-28 | 张小勇 | Series mixed biological manure filling agent material made by flyash and mfg. process thereof |
CN1830541A (en) * | 2006-01-20 | 2006-09-13 | 王家强 | Modified natural and self-making floating carrier and mesopore molecular sieve denitrogen dephosphorus material, its preparation and application |
CN101125688A (en) * | 2007-07-13 | 2008-02-20 | 常州市天歌高分子科技有限公司 | Nuisanceless algae processing agent and using method thereof |
CN101362623A (en) * | 2008-08-18 | 2009-02-11 | 江苏省嘉庆水务发展有限公司 | Sewage water treatment method by essential diatom earth cooperation with biochemical action |
Non-Patent Citations (1)
Title |
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JP特开2007-319792A 2007.12.13 |
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