CN1295161C - Method for purifying water of river and channel by biological grid - Google Patents
Method for purifying water of river and channel by biological grid Download PDFInfo
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- CN1295161C CN1295161C CNB2005100377920A CN200510037792A CN1295161C CN 1295161 C CN1295161 C CN 1295161C CN B2005100377920 A CNB2005100377920 A CN B2005100377920A CN 200510037792 A CN200510037792 A CN 200510037792A CN 1295161 C CN1295161 C CN 1295161C
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Biological Treatment Of Waste Water (AREA)
Abstract
The present invention discloses a method for purifying the water body of a river channel and a ditch through a biological grid, and relates to a method for purifying the water body of a river channel or a ditch. The biological grid is composed of biological grid units, and each stage of biological grid unit is composed of a supporting frame, fillers and biological membranes, wherein the fillers are filled in the supporting frame or wind the supporting frame; the biological membranes grow on the fillers; the biological grid is put in the water body of a river or a ditch. By adopting the method of the present invention, the COD removal rate reaches 35% to 50%, the N removal rate reaches 15% to 30%, and the P removal rate reaches 15% to 20%. The method is suitable for river channel or a ditch and a river basin, has the advantages of less construction investment and optimal land utilization, and is a river water body biological strengthening purification method which has the advantages of treatment in accordance with local condition and low cost.
Description
One, technical field
The present invention relates to the purifying method of river course or irrigation canals and ditches water body, specifically in river course or irrigation canals and ditches, set up biological grid, thus the method for the effect purifying water body by biological grid.
Two, background technology
China is the country in lake more than, along with developing rapidly of modern economy, and agrotechnical progress, the blowdown flow rate and the population in cities and towns constantly increase, make the factor of polluted lake water body increasing, a large amount of nutritive substance (as nitrogen, phosphorus etc.) constantly flows into the lake, and lake eutrophication is on the rise.Survey data according to a lake surplus the whole nation 130 shows that high nutrient laden lake accounts for 43.5% of investigation sum, middle nutrient laden lake account for the investigation sum 45% (.1999 of State Environmental Protection Administration China Environmental State Bulletin. environment protection, 2000 (6)).The eutrophication in lake is one of China's water resources disaster, and cause tremendous loss to country every year, and along with the human production activity constantly strengthens having the trend of increasing the weight of.Therefore, the sustainable development of control lake eutrophication is the key subjects that lake administrative authority faces.
At present, Urban Water Environment regulation both at home and abroad mainly comprises measures such as cutting dirt, water transfer, desilting.Because the bed mud nutrition of environment water discharges and the influence of pollution of area source, make aforesaid method can not fundamentally solve water pollution problem (gift in token of gratitude state, Zheng Huaili. the Preventing Countermeasures research of lake eutrophication. world technology research and development, 2004 (2); Wang Xiaoyu, Feng Jiang, Hu Mingzhong. the bed mud dredging engineering that lake eutrophication is administered. environment protection, 2003 (2); Grandson Fu, Ceng Siyu, Chen Jining. the assessment of eutrophic lake sediment pollution control techniques. Techniques and Equipment for Environmental Pollution Control, 2003,4 (8); Car force, Liu Yan, Li Junqi. Beijing City pollution of area source feature and Control Countermeasure thereof. Beijing Inst. of Civil Engineering ﹠ Arch's journal, 2002,18 (4))." Environmental Protection in China office 9 5～2010 years development in science and technology thinkings framework " pointed out: primary study microbial project treatment technology, carry out Environmental Biotechnology researchs such as contaminated site is remedied, reparation energetically, to solve many environmental problems that face.Therefore, by research water ecology situation, propose practicable improvement method, recover the normal ecological functions of urban water-body, the benign cycle that promotes water ecosystem is the key that solves the water body environment problem.
Biological gate technique is little pollution biological purification technology of researching and developing in the technical experience that abundant absorption biomembrance process is disposed of sewage, catalytic oxidation technology (the Xiao Yutang that uses in its Biological Principles and the sewage treatment process, Xu Jianhua. biological contact oxidation process purifies the mechanism research of micro-polluted raw. environmental science, 1999,20 (3)) close, organism, ammonia nitrogen, nitrite nitrogen are mainly removed gradually by the comprehensive actions such as biofloculation, absorption, oxidation, biological degradation and biological nitration of biomembranous absorption, microorganism.At present the biological contact oxidation metallization processes little source of pollution water (Ding Yuanhong, Hong Huasheng, Xiong Xiaojing, Tao Yousheng. the pretreating micro-polluted source of bio-contact oxidation water. water technology, 2002,28 (3); Geng Tusuo, Wang Zhansheng. bio-contact oxidation is handled the experimental study of micro-polluted water. urban environment and urban ecology, 2000,13 (4)), sanitary sewage (Du Maoan, Qiu Liping, Feng Qi, middle village is just profound. bio-contact oxidation filtration treatment domestic Wastewater. HarBin Building University's journal, 2001,34 (4); Meng Lingchun, Sun Qimei. bio-contact oxidation is handled sanitary sewage. Treatment of Industrial Water, 2000,20 (11)) and trade effluent in have a wide range of applications, but utilize the method for existing microbially decontaminate water body in the polluted water body not see application in position.
The mode of setting up of biological gate technique is handled similar with the permeable reactive grid technology or the permeability response wall technology of use in the reparation to groundwater pollution, the latter is one of the present biological restoration effective technology that is successfully applied to contaminated body of groundwater in the world (Wang Yeyao, Meng Fansheng. the permeable reactive grid technology that groundwater pollution is repaired. underground water, 2004,26 (2); Cui Junfang, Zheng Xi come, woods National Day. the permeability response wall technology that the underground water organic contamination is handled. and hydroscience progress, 2003,14 (3)).But permeable reactive grid or permeability response wall are dependent response districts that is filled with redox mediator, contain the reductive agent of volatile organic matter of degrading, the network of fixing metal (chela) mixture in the reaction zone, the concrete of essential oxygen source of microorganism growth and electron acceptor(EA) is provided, be degraded when making pollutent, adsorb, precipitate and remove by reaction zone.
The result of literature search shows: before the present invention finishes, do not find that biological gate technique is applied to the report of network of waterways water quality strengthened purification.
Three, summary of the invention
1, the technical problem of Xie Jueing
Along with developing rapidly of modern economy, agrotechnical progress, the blowdown flow rate and the population in cities and towns constantly increase, and dystrophication is on the rise, and still lacks cost-effective improvement method at present.The method that the purpose of this invention is to provide a kind of purifying water of river and channel by biological grid is set up biological grid and is provided the place for Microbial denitrogenation dephosphorization and degradable organic pollutant in river course (irrigation canals and ditches), thereby plays the network of waterways water quality effect that purifies.
2, technical scheme
The technical scheme that adopts is as follows:
The method of purifying water of river and channel by biological grid, biological grid are made of biological grid unit, every grade of biological grid unit by support, be filled in the support or be wound in the filler on the support and microbial film three parts that grow on the filler are formed, biological grid are positioned in river or the irrigation canals and ditches water body.
Biological grid are facilities that a kind of microorganism for the participation pollutant purification, small-sized zooplankton etc. provide the apposition growth condition, utilize the existence conditions of polluted water body to cultivate microbial film, by the pollutent in microorganism absorption and the degradation water.River course and irrigation canals and ditches micropollutant water by biological grid at different levels, are purified by action of microorganisms in biological grid successively.
The present invention purifies water by the biological grid of setting up based on bio-contact oxidation microbiology ultimate principle in river course (irrigation canals and ditches).Biological grid have multi-stage biological grid unit, and biological grid unit is a moudle type, but flexible combination, maintenance, every grade of biological grid unit by support, be filled in the support or be wound in the filler on the support and microbial film three parts that grow on the filler are formed, in the Figure of description 1,1 is support, and 2 is filler.But narrower runoff intercept type is placed, the runoff access patch formula of broad is placed or fragmentary formula is planted and buried, and Figure of description 2 is for biological grid intercept type is placed, folded plate type is placed and fragmentary formula is planted the synoptic diagram that buries, and wherein 3 for the intercept type placement, 4 are that folded plate type places, and 5 plant for fragmentary formula and to bury.That filler has at present is rigid filled, soft-filler, semi soft packing, combined packing (as shield formula filler) and new packing (as 3 D elastic filler, floating stuffing), effect has soft-filler, combined packing and 3 D elastic filler preferably in river course and irrigation canals and ditches, wherein, little, the easy obstruction of rigid filled specific surface area, cost height; The organic or inorganic granulated filler is applicable to biological fluidized bed, needs bigger aeration power that it is fully contacted with water body; It is bigger that the suspended state of floating stuffing makes it influenced by streamflow regime, easily piles up or loss; The soft-filler cost is low, and biofilm development is thinner in micropollutant water, and filler is difficult for conglomeration, use better, but the life-span is short slightly; 3 D elastic filler is applied widely, and result of use is good, and the life-span is long, and cost is than soft-filler height, and is approaching with semi soft packing; Combined as shield formula filler, have good distribute water and air performance, cost is between soft and semi soft packing, and cost performance is higher.
3, beneficial effect
Adopt the inventive method, the COD clearance reaches 35～50%, N clearance 15～30%, P clearance 15～20%.Present method is applicable to river and channel and basin, and construction investment is few, saves the area, and is a kind of little biological reinforced purifying method of river water of suiting measures to local conditions, cost.
Four, description of drawings
Fig. 1 is the unitary structural representations of biological grid;
Fig. 2 is three kinds of mode synoptic diagram placing biological grid in the river irrigation canals and ditches.
Five, embodiment
Further specify the present invention by the following examples in conjunction with the accompanying drawings
Embodiment 1:
Be higher than the narrower of IV class water quality (according to the GB3838-2002 water environment quality standard) (less than 10 meters, the middle biological grid of setting up gimp formula filler 2 (belonging to soft-filler) of polluted river channel (irrigation canals and ditches) down together), filler is wound on the scalariform through metal 1, establish the big impurity of grid interception before the biological grid, biological grid and the equal intercept type of grid place 3, after 1～3 month biofilm, by absorption and catalytic oxidation, make the quality of river water of the biological grid of process be purified, COD reduces 30%, and N, P reduce 15～25%.
In the middle of IV class water quality (according to the GB3838-2002 water environment quality standard) river course (irrigation canals and ditches), set up the biological grid of shield formula filler 1, filler is on column plastic stent 2, the fragmentary formula of biological grid is planted and is buried 5, about one meter of buried depth, after 1～3 month biofilm,, make the quality of river water of the biological grid of process be purified by absorption and catalytic oxidation, COD reduces 50%, and N, P reduce 15～30%.
Embodiment 3
In the middle of V class and bad V class water quality (according to the GB3838-2002 water environment quality standard) narrower river course (irrigation canals and ditches), set up the biological grid of screw-like elastic filler 1, filler is positioned in the fence type cement support 2, if aerating apparatus, establish the big impurity of grid interception before the biological grid, the equal intercept type 3 of biological grid and grid is placed, after 1～3 month biofilm, by absorption and catalytic oxidation, make the quality of river water of the biological grid of process be purified, COD reduces 70%, and N, P reduce 20～40%.
Embodiment 4
In the middle of the farmland drainage runoff, set up the biological grid of built-up type Ball-type packing 1, filler is positioned in the fence type cement support 2, if aerating apparatus, establish the big impurity of grid interception before the biological grid, the equal intercept type of biological grid and grid places 3, after 1～3 month biofilm, by absorption and catalytic oxidation, make the farmland drainage water quality of the biological grid of process be purified, COD reduces 50～70%, and N, P reduce 20～40%.
Embodiment 5
In the middle of lakeside resident living waste water draining runoff, set up the biological grid of elastic solid filler 1, filler is positioned in the fence type cement support, if aerating apparatus, establish the big impurity of grid interception before the biological grid, the equal intercept type of biological grid and grid is placed, after 1～3 month biofilm, by absorption and catalytic oxidation, make the quality of river water of the biological grid of process be purified, COD reduces 50～70%, and N, P reduce 20～40%.
Embodiment 6
At broad (greater than 10 meters, the biological grid of screw-like elastic filler 1 are set in IV class water quality (according to the GB3838-2002 water environment quality standard) river course down together), filler is positioned in the fence type cement support 2, biological grid folded plate type 4 is placed, and the river deflector type is passed through, after 1～3 month biofilm, by absorption and catalytic oxidation, make the quality of river water of the biological grid of process be purified, COD reduces 50%, and N, P reduce 15～30%.
Embodiment 7
The biological grid of the column that screw-like elastic filler 1 is housed are set in the IV of broad class water quality (according to the GB3838-2002 water environment quality standard) river course, filler is fixed in column plastic stent 2 tops, support is planted and is embedded in the river bed, about one meter of buried depth, the fragmentary formula of biological grid is planted and is buried 3, after 1～3 month biofilm, by absorption and catalytic oxidation, make the quality of river water of the biological grid of process be purified, COD reduces 50%, and N, P reduce 15～30%.
Claims (5)
1. the method for a purifying water of river and channel by biological grid, biological grid are made of biological grid unit, it is characterized in that every grade of biological grid unit by support, be filled in the support or be wound in the filler on the support and microbial film three parts that grow on the filler are formed, biological grid are positioned in river or the irrigation canals and ditches water body.
2. according to the method for the purifying water of river and channel by biological grid described in the claim 1, it is characterized in that filler is soft-filler, combined packing or 3 D elastic filler.
3. according to the method for the purifying water of river and channel by biological grid described in claim 1 or 2, it is characterized in that biological grid the mode in river or the irrigation canals and ditches water body of being positioned over has that intercept type is placed, folded plate type is placed or fragmentary formula is planted and buried.
4. according to the method for the purifying water of river and channel by biological grid described in the claim 2, it is characterized in that filler is a combined packing.
5. according to the method for the purifying water of river and channel by biological grid described in the claim 4, it is characterized in that combined packing is a shield formula filler.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100377920A CN1295161C (en) | 2005-02-05 | 2005-02-05 | Method for purifying water of river and channel by biological grid |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005100377920A CN1295161C (en) | 2005-02-05 | 2005-02-05 | Method for purifying water of river and channel by biological grid |
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| CN1657442A CN1657442A (en) | 2005-08-24 |
| CN1295161C true CN1295161C (en) | 2007-01-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101066823B (en) * | 2007-06-05 | 2011-09-28 | 南开大学 | Method of controlling algae in eutrophic scenic water with high salt content |
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| CN101905920B (en) * | 2010-08-05 | 2012-05-23 | 南京大学 | Method for performing emergency treatment of water with excessive iron and manganese by using diversion channel |
| CN102583758B (en) * | 2012-02-14 | 2013-06-05 | 河海大学 | Floating bed filter screen type biofilm grid |
| CN107857371A (en) * | 2017-12-04 | 2018-03-30 | 中国电建集团中南勘测设计研究院有限公司 | A kind of water contamination treating apparatus and governing system |
| CN110845083B (en) * | 2019-11-29 | 2023-11-17 | 苏州市职业大学 | Device for treating black and odorous water body by combining biological grid-non-membrane aerobic three-phase separator |
| CN111087080B (en) * | 2019-12-20 | 2022-06-03 | 南京大学盐城环保技术与工程研究院 | Efficient phosphorus removal ecological ditch aiming at farmland non-point source pollution and paving method thereof |
| CN115321688A (en) * | 2022-06-29 | 2022-11-11 | 暨南大学 | Self-adjusting biological grid device for improving water quality of river channel and application system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87216657U (en) * | 1987-12-16 | 1988-10-05 | 浙江省玉环县水处理设备厂 | Shield type biological water pollution treating apparatus |
| US5228998A (en) * | 1992-05-26 | 1993-07-20 | Diclemente Lee M | Floating biological contactor |
-
2005
- 2005-02-05 CN CNB2005100377920A patent/CN1295161C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87216657U (en) * | 1987-12-16 | 1988-10-05 | 浙江省玉环县水处理设备厂 | Shield type biological water pollution treating apparatus |
| US5228998A (en) * | 1992-05-26 | 1993-07-20 | Diclemente Lee M | Floating biological contactor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101066823B (en) * | 2007-06-05 | 2011-09-28 | 南开大学 | Method of controlling algae in eutrophic scenic water with high salt content |
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