CN100593521C - Process of treating slightly polluted eutrophic water in lake and reservoir - Google Patents
Process of treating slightly polluted eutrophic water in lake and reservoir Download PDFInfo
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- CN100593521C CN100593521C CN200610032301A CN200610032301A CN100593521C CN 100593521 C CN100593521 C CN 100593521C CN 200610032301 A CN200610032301 A CN 200610032301A CN 200610032301 A CN200610032301 A CN 200610032301A CN 100593521 C CN100593521 C CN 100593521C
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- phosphate fertilizer
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- nitrogen
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
Abstract
The present invention is process of treating slightly polluted eutrophic water in lake and reservoir, and belongs to the field of environment protecting technology. The process of treating eutrophic water in lake and reservoir slightly polluted by great area agricultural pollutant sources includes balancing nitrogen with phosphate to suppress the growth of blue green algae and green algae, directionally culturing organism eating plankton to eliminate water pollutant and improve water quality, raising fish yield and raising the comprehensive utilization benefit of great water surface. The present invention has greatly raised comprehensive utilization benefit and obviously raised water quality.
Description
[technical field]
The present invention relates to a kind of method of administering little pollution eutrophication water, belong to environmental protection and agricultural technology field,
[background technology]
At present, unhurried current such as lake, reservoir or closure water body, substantially be the serious nitrogen state that exceeds standard, cause body eutrophication, will cause that under the good growing weather condition burst of indigo plant, green algae increases, this eutrophication water has some water quality characteristics that is different from general surface water, be embodied in low turbidity, high algae, colourity is higher, stink is big, simultaneously past contact if do not handle, will cause lake, reservoir water body water quality from smoke into smother with the high characteristics of ammonia nitrogen concentration.Processing to this eutrophication water is an a great problem at present.Because existing water technology concentrates on the processing of domestic water and industrial discharge waste water mostly.And for the treatment process of large-area widespread pollution from the overuse of fertilizers and pesticides in rural area lake, reservoir water body, almost nobody relates to.
The tap water eutrophic raw water is handled main air supporting method, the Powdered Activated Carbon of adopting both at home and abroad and add method, biological treatment and FPB method.But these methods are nearly unavailables to handling large-area comprehensive body eutrophication.
The air supporting method can effectively be removed the high density algae, eliminates the disadvantageous effect of high algae to conventional treatment process.But the air supporting method can't be removed dissolved organic matter, also can't reduce ammonia nitrogen concentration in the water.
The Powdered Activated Carbon method of adding can be eliminated colourity, stink and the partial organic substances of water, but can't remove ammonia nitrogen.And the disposable use of Powdered Activated Carbon also makes processing cost higher.
Biological treatment mainly comprises biological former water pretreatment technology and ozone biological activated carbon advanced treatment process.Biological former water pretreatment technology has two kinds of methods, contact oxidation method and biological ceramic particle filter tank usually.Using more sophisticated is contact oxidation method.In contact-oxidation pool, install mass filler, and investment is big, taking up an area of is greatly that the residence time is long, safeguards that inconvenience promptly changes filler and bother, easy deposition at the bottom of the pond moves dumb.Contact oxidation method is also relatively poor to the removal efficient of algae, can't adapt to high algae water quality.Ozone biological activated carbon advanced treatment process treatment effect is good, but investment and working cost are very high, in present condition, can't large-scale promotion use in medium and small water factory.Ozone biological activated carbon advanced treatment process causes precipitation and filters total amount algae does not provide solution yet.
[summary of the invention]
The objective of the invention is to propose a kind of simple to operate, with low cost, the little pollution eutrophic raw water treatment process that can effectively remove pollutents such as high algae, low turbidity is called for short the FPB method, in order in less investment, under the condition of not taking up an area of, improve the comprehensive benefit of lake, reservoir.
For achieving the above object, the technical solution used in the present invention is: in the water body of the big water surface such as lake, reservoir, by detect the concrete content of nitrogen phosphoric in the water-outlet body, throw in phosphate fertilizer at good weather and place then.Utilize phosphorus balance nitrogen, suppress blue, the particularly growth of blue-green algae of green alga, post-directed training is the palatability bait of food with the planktonic organism, in order to eliminate water pollution, improves water quality, increases the output of breeding fish, and improves the comprehensive benefit of the big water surface such as lake, reservoir.Its concrete steps are as follows:
(1) investigation lake, reservoir environment and ecologic regime according to the water body size, selected multiple spot, measures nitrogen, phosphorus content in lake, the reservoir water body;
(2), calculate this waters nitrogen, phosphorus stock on hand and source amount according to investigation and measurement result;
(3) total according to nitrogen is the stocking rate of the fingerling of food with the planktonic organism;
(4) according to each nitrogen, phosphorus content measurement result, set nitrogen, phosphorus than being 3-10: 1 calculates desired phosphate fertilizer input amount;
(5) selecting area is the 5-20% of lake, the reservoir water body total area, drops into the required phosphate fertilizer of aforementioned calculation season at fine, fish growth, and will throw and execute phosphate fertilizer 12-20 time every year.
In the phosphorus that drops into, be mainly phosphorated fertilizer: as calcium superphosphate, calcium magnesium phosphorus, ammonium phosphate, potassium hydrogen phosphate and phosphorated composite fertilizer, compound fertilizer etc.
Mainly comprise in the fingerling of putting in a suitable place to breed: it is the kind of food with the planktonic organism that silver carp, flathead, thin squama tiltedly close silver xenocypris etc.
The weather that drops into: refer in 16 ~ 26 ℃ of the water temperatures that fine, wind-force is less than three grades.
The place of dropping into: for bottom flat, mud, Wu Cao district, the depth of water are arranged at the 1-15m place.
The invention has the beneficial effects as follows: because of the present invention is according to the lake, the actual environment of reservoir and ecological state, measure N actual in the water body, P content, then by N: P=(3 ~ 10): 1 calculates the weight that should throw in P, in 5 ~ 20% scopes of the water body total area, the annual fish growth busy season, throw in 12 ~ 20 times, make the nitrogen of water body, the phosphorus content balance, therefore the injected volume of phosphorus is few, cost is low, can also effectively remove high algae, little pollution of pollutents such as low turbidity, the lake of eutrophication, reservoir water body water quality is through experiment, the water quality of the big water surface water body of culturing with the inventive method is from 4 classes, 5 classes can be brought up to 2 classes, the output of fish is brought up to 20 ~ 40kg/ mu by original 7 ~ 13kg/ mu, increases economic efficiency 2.5 times.
[embodiment]
The present invention is further described below in conjunction with embodiment.
Embodiment 1:
The lake that the somewhere is one 5 ten thousand mu.Through investigating: periphery has 80,000 mu in farmland, has 100,000 people's sanitary sewage to go into the lake; More than ten kind of fish such as existing carp, crucian carp, bream in the lake, and shrimp etc.; Primary productivity is at 8-12kg/ mu, according to the nitrogenous source amount calculate silver carp, the bighead kind is a stocking rate 7kg/ mu.Measurement result: N/P ratio reaches 20-280: 1; By water surface area N/P ratio is adjusted to 7: 1, selecting area is 5%, and 16 ~ 18 ℃ of water temperatures, fine, wind-force drops into ammonium phosphate and calcium superphosphate, totally 12 times less than three grades.Fish yield will reach 20kg/ mu in the end of the year, and water quality is changed into two classes by four classes.
Embodiment 2:
The reservoir that the somewhere is one 1 ten thousand mu.Through investigating: periphery is mainly the hills, has collective area to reach 200 square kilometres, and 10,000 mu in farmland is arranged, and 70,000 people's sanitary sewage warehouse-in is arranged; More than ten kind of fish such as existing carp, crucian carp, bream in the storehouse, and shrimp etc.; Primary productivity is at 10-15kg/ mu, according to the nitrogenous source amount calculate silver carp, the bighead kind is a stocking rate 9kg/ mu.Measurement result: N/P ratio reaches 28-310: 1; By water surface area N/P ratio is adjusted to 10: 1, selecting area is 15%, and 18 ~ 20 ℃ of water temperatures, fine, wind-force drops into potassium hydrogen phosphate and calcium magnesium phosphorus, totally 20 times less than three grades.Fish yield will reach 30kg/ mu in the end of the year, and water quality is changed into two classes by four classes.
Embodiment 3:
The lake that the somewhere is one 2 ten thousand mu.Through investigation: periphery has 50,000 mu in farmland, have 70,000 people sanitary sewage, and the plant effluents of 20 main discharging organic contaminations go into the lake; More than ten kind of fish such as existing carp, crucian carp, bream reach 8 kinds of shrimp, crabs etc. and spiral shell, freshwater mussel, a species of small clam living in fresh water etc. in the lake; Primary productivity is at 15-18kg/ mu, according to the nitrogenous source amount calculate silver carp, the bighead kind is a stocking rate 13kg/ mu.Measurement result: N/P ratio reaches 20-280: 1; By water surface area N/P ratio is adjusted to 5: 1, selecting area is 10%, and at water temperature 20-26 ℃, fine, wind-force drops into ammonium phosphate and calcium superphosphate, totally 18 times less than three grades.Fish yield will reach 40kg/ mu in the end of the year, and water quality is changed into three classes by five classes.
Claims (7)
1, a kind of method of handling little pollution eutrophic lake, reservoir water body is characterized in that comprising the steps:
(1) investigation lake, reservoir environment and ecologic regime according to the water body size, selected multiple spot, measures nitrogen, phosphorus content in lake, the reservoir water body;
(2), calculate this waters nitrogen, phosphorus stock on hand and source amount according to investigation and measurement result;
(3) total according to nitrogen is the stocking rate of the fingerling of food with the planktonic organism;
(4) according to each nitrogen, phosphorus content measurement result, set nitrogen, phosphorus than being 3-10: 1 calculates desired phosphate fertilizer input amount;
(5) selecting area is the 5-20% of lake, the reservoir water body total area, drops into the required phosphate fertilizer of aforementioned calculation season at fine, fish growth, and will throw and execute phosphate fertilizer 12-20 time every year.
2, method according to claim 1 is characterized in that: the kind of described each input phosphate fertilizer has calcium superphosphate, calcium magnesium phosphorus, ammonium phosphate, potassium hydrogen phosphate or phosphorated composite fertilizer, compound fertilizer.
3, method according to claim 1 is characterized in that: each input amount of described phosphate fertilizer transfers to N/P ratio 7: 1 for according to the N/P ratio of measuring, and draws the input amount of required phosphate fertilizer.
4, method according to claim 1 is characterized in that: each input amount of described phosphate fertilizer transfers to N/P ratio 10: 1 for according to the N/P ratio of measuring, and draws the input amount of required phosphate fertilizer.
5, method according to claim 1 is characterized in that: each input amount of described phosphate fertilizer transfers to N/P ratio 3: 1 for according to the N/P ratio of measuring, and draws the input amount of required phosphate fertilizer.
6, method according to claim 1 is characterized in that: the weather of described input phosphate fertilizer is meant water temperature in 16 ~ 26 ℃, and is fine, and wind-force is less than 3 grades.
7, method according to claim 1 is characterized in that: the place of described input phosphate fertilizer is a bottom flat, and mud is arranged, the Wu Cao district, and the depth of water is at 1 ~ 15m place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610032301A CN100593521C (en) | 2006-09-21 | 2006-09-21 | Process of treating slightly polluted eutrophic water in lake and reservoir |
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| CN200610032301A CN100593521C (en) | 2006-09-21 | 2006-09-21 | Process of treating slightly polluted eutrophic water in lake and reservoir |
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| CN101020592A CN101020592A (en) | 2007-08-22 |
| CN100593521C true CN100593521C (en) | 2010-03-10 |
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| CN200610032301A Expired - Fee Related CN100593521C (en) | 2006-09-21 | 2006-09-21 | Process of treating slightly polluted eutrophic water in lake and reservoir |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105198089B (en) * | 2015-10-18 | 2018-11-20 | 张连春 | The compound drop nitrogen technology of aqueous bio |
| CN106355001B (en) * | 2016-08-27 | 2018-08-17 | 湖南文理学院 | A kind of lake, reservoir biological and ecological capacity research method |
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2006
- 2006-09-21 CN CN200610032301A patent/CN100593521C/en not_active Expired - Fee Related
Non-Patent Citations (4)
| Title |
|---|
| 中型浅水湖泊人工施化肥技术及其效果研究. 杨品红，许典球.海洋湖泊通报，第1991年第3期. 1991 |
| 中型浅水湖泊人工施化肥技术及其效果研究. 杨品红，许典球.海洋湖泊通报，第3期. 1991 * |
| 大水面无公害水产品生产工艺流程研究. 李梦军，杨品红.内陆水产，第2005年第1期. 2005 |
| 大水面无公害水产品生产工艺流程研究. 李梦军，杨品红.内陆水产，第1期. 2005 * |
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