CN108658388A - A method of promoting eutrophic water body transparency - Google Patents
A method of promoting eutrophic water body transparency Download PDFInfo
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- CN108658388A CN108658388A CN201810580246.9A CN201810580246A CN108658388A CN 108658388 A CN108658388 A CN 108658388A CN 201810580246 A CN201810580246 A CN 201810580246A CN 108658388 A CN108658388 A CN 108658388A
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- cyanobacteria
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/007—Contaminated open waterways, rivers, lakes or ponds
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Abstract
The present invention provides a kind of method promoting eutrophic water body transparency, the method includes：（1）Choose target water body；（2）Filter-feeding silver carp bighead is launched into target water body；（3）When cyanobacteria colonial organism amount of the grain size more than 50 μm is less than the 30% of cyanobacteria group total biomass, launched into target water body so that cyanobacteria phase transition is the mineral of green alga.The problems such as present invention is high, water transparency is low for eutrophic water body Blue-green Algae Fast Growth degree realizes the decaying of cyanobacteria group, the purpose that the transformation of the opposite chloralgal facies of cyanobacteria, water transparency are obviously improved, this method have the characteristics that safely, it is at low cost.
Description
Technical field
The invention belongs to field of environment engineering technology, and in particular to a method of promoting eutrophic water body transparency.
Background technology
Currently, it is a kind of universal phenomenon that the water body blue algae water blooms such as China lake, which are broken out, consequence is to cause water transparency
It reduces, water quality deterioration seriously damages the ecosystem.The method of the common chemistry of the control measures of cyanobacterial bloom, physics and biology, changes
Method mainly controls algal bloom by sowing chemical agent or flocculant, the disadvantage is that effect cannot be lasting, moreover, making
Secondary pollution can be brought with drug flocculation sediment or killing.Physical method mainly by manually salvaging and mechanical algae removement, takes consumption
Power and be difficult to continue removal.Fish launch mainly is carried out directly controlling algae with silver carp bighead class, although algae colony's quantity under
Drop, but unicellular or small population algae bio amount does not often decline, and silver carp flathead cultivation density also causes water body ammonia nitrogen when high
The negative effects such as concentration rising.Therefore, the method for silver carp flathead control algae is effective in the preferable water body of some water quality such as Thousand-Island Lake etc., but
In the extremely serious lake of Blue-green Algae Fast Growth, effect is not notable.Freshwater shellfish is also used for controlling algae, although can filter out slender
The cyanobacteria of born of the same parents or small population, but since cyanobacteria lacks the essential nutrient element of shellfish growth, shellfish growth and development cannot be met
Required, the cyanobacteria that ingests for a long time can cause shellfish growth and development suppressed or even dead（Park et al., 2002; Basen
et al., 2011）.And the formation of cyanobacteria group also has an impact shellfish filter food, such as freshwater shellfishAnodonta anatina
When ingesting microcystic aeruginosa group, its filter food rate can reduce and false excrement production increases（Bonteset al., 2007）.Heavy water is planted
Object inhibits cyanobacteria in terms of nutrient competition, inhibition bed mud suspend and release algal control is three plain, but the recovery of water plant needs
Many prerequisites, submerged plant is not easy to survive when condition is immature.
Invention content
The present invention for the above-mentioned prior art the problem of, it is proposed that it is a kind of thorough to control the blue algae water that seriously breaks out
China, the method for promoting water transparency.
To achieve the above object, the technical solution adopted by the present invention is as follows：
A method of eutrophic water body transparency is promoted, is included the following steps：
（1）Choose target water body；
（2）Filter-feeding silver carp bighead is launched into target water body；
（3）When cyanobacteria colonial organism amount of the grain size more than 50 μm is less than the 30% of cyanobacteria group total biomass, into target water body
It launches so that cyanobacteria phase transition is the mineral of green alga.
Step（1）The method of the selection target water body, includes the following steps：
（1-1）Ratio in analyzing water body shared by the group of the composition and cyanobacteria different-grain diameter of phytoplankton cyanobacteria and green alga；
（1-2）Phytoplankton ratio shared by cyanobacteria reaches 80% or more the cyanobacteria colonial organism amount with grain size more than 50 μm
60% or more water body of cyanobacteria group total biomass is target water body.
Step（2）In, the throw-in density of the filter-feeding silver carp bighead is 10 ~ 30g/m3.Such throw-in density can be effective
Di Shi cyanobacterias group minimizes or unicellularization.
Step（2）In, the specification of the filter-feeding silver carp bighead is 50 ~ 500g/ tails.
Step（3）In, described so that the mineral that cyanobacteria phase transition is green alga are alunite miberal powder.
Step（3）In, the injected volume of the mineral is 1mg/L.
Step（3）In, the putting mode of the mineral is：It launches 1 time within every 3 ~ 5 days, it is continuous to launch 5-7 times.Purpose is
By adjusting and stablizing water body acid-base value（PH stable is in 7.5-8.5 or so）, change the competitiveness of different algal species, make small-sized
Change or the cyanobacteria of unicellularization is changed into filter feeder food-green alga preferably, in addition, alunite miberal powder can also make portion
Divide cyanobacteria precipitation, reduces algae and water concentration, enhance the transparency.
Further, the method for the promotion eutrophic water body transparency further includes following steps：
（4）Launch so that cyanobacteria phase transition be green alga mineral after, the phytoplankton ratio shared by the cyanobacteria is less than 20%, to
Filter feeding bivalves are launched in target water body.
Step（4）In, the Filter feeding bivalves are Corbicula fluminea.
Step（4）In, the throw-in density of the Filter feeding bivalves is 50 ~ 500g/m3.The shellfish of dispensing can further filter
Drinking water body green alga improves water transparency, stablizes lake ecosystem.
The beneficial effects of the present invention are：For the serious target water body of Blue-green Algae Fast Growth degree, silver carp bighead class filter food can make
Cyanobacteria group minimizes or unicellularization, and suitable silver carp bighead class breeding density will not bring excessively high negative of water body ammonia nitrogen concentration
It influences.Alunite miberal powder can adjust and stablize water body acid-base value, weaken cyanobacteria competitiveness, make small population with it is single celled
Cyanobacteria is to green alga direction evolution, while the alunite miberal powder of suitable dose will not have Ecology negative effect, while can also sink
Shallow lake part cyanobacteria, moreover it is possible to avoid carrying out chemical substance risk to water belt using sulfuric acid or hydrochloric acid etc..The opposite green alga phase transition of cyanobacteria
Afterwards, food green alga further is filtered using freshwater shellfish, water body recovery technology concentration can be reduced.To be finally reached reduction target water
Body cyanobacteria promotes water transparency, the continual and steady purpose for improving water quality.
The problems such as the method for the invention is high, water transparency is low for eutrophic water body Blue-green Algae Fast Growth degree, realizes
The purpose that the decaying of cyanobacteria group, the transformation of the opposite chloralgal facies of cyanobacteria, water transparency are obviously improved, this method have safety,
The features such as at low cost.
Specific implementation mode
Embodiment 1
5000 square metres of one eutrophic water bulk area of Wuxi, 3.5 meters of the depth of water, water body is muddy, and transparency is less than 20cm.The water body is blue
Algae breakout of water bloom is frequent, and chlorophyll concentration reaches 100ug/L, cyanobacteria accounting about 90% in phytoplankton, wherein grain size is big
In the 65% of 50 μm of cyanobacteria colonial organism Liang Zhan cyanobacterias group total biomasses.Start to construct at the beginning of 5 months 2013, first launches silver carp bighead
30 g/m of kind3, specification is per 500 grams or so of tail, and July 20, chlorophyll concentration slightly decreases as 95ug/L, cyanobacteria accounting
Or 90% or more, but it is only 10% that cyanobacteria group accounting, which declines extremely apparent, and cyanobacteria colonial organism amount of the grain size more than 50 μm is
The 30% of cyanobacteria group total biomass.With that is, splashing alunite miberal powder in the water surface, dosage 1mg/L, every medication in 5 days is primary, even
Continuous to use 7 times, it is 8.5 or so to adjust water body acid-base value, by the end of August when chlorophyll concentration be reduced to 40ug/L, cyanobacteria accounting is about
20%, water transparency is improved to 40cm.Hanging culture Corbicula fluminea later, layout density 200g/m3, September 28 days, chlorophyll concentration drop
Low is 15ug/L, and water transparency reaches 90cm, and hereafter water transparency is stably maintained between 80-120cm always.
Embodiment 2
Certain eutrophic water body transparency is less than 17cm.The water body blue algae water bloom is broken out frequently, and chlorophyll concentration reaches 120ug/L,
Cyanobacteria accounting about 80% in phytoplankton, wherein grain size is more than 50 μm of cyanobacteria colonial organism Liang Zhan cyanobacterias group total biomasses
60%.Certain starts to construct at the beginning of 5 months years, first launches 10 g/m of silver carp Variegated3, specification is every 50 grams or so of tail, by the end of July, chlorophyll
It is that cyanobacteria group is total more than 50 μm of cyanobacteria colonial organism amount that concentration, which is reduced to 87ug/L, cyanobacteria accounting or 70% or more, grain size,
The 10% of biomass.With that is, splashing alunite miberal powder in the water surface, dosage 1mg/L, every medication in 3 days is primary, is used continuously 5 times,
Adjust water body acid-base value be 7.5 or so, by the end of August when chlorophyll concentration be reduced to 34ug/L, cyanobacteria accounting about 10%, water body is transparent
Degree is improved to 50cm.Hanging culture Corbicula fluminea later, layout density 200g/m3, September 28 days, chlorophyll concentration is reduced to 12ug/L, water
Body transparency reaches 100cm, and hereafter water transparency is stably maintained between 90-120cm always.
Embodiment 3
2017, Experimental Enclosure 4 in situ, 12 square metres of each enclosure area, enclosure water body and lake water are arranged in Wuxi Taihu Lake
Substantially it does not exchange.Silver carp bighead, 20 g/m are put in four groups of processing of experimental setup, one group of processing in a suitable place to breed3, specification is per 250 grams of tail；One group
Alunite miberal powder of splashing is handled, dosage 1mg/L, every medication in 5 days is primary, is used continuously 6 times；One group is put in a suitable place to breed Corbicula fluminea, hanging culture side
Formula, density 300g/m3；Integrated treatment group puts silver carp flathead in a suitable place to breed according to sequencing（First month）, alunite miberal powder of splashing（The
Two months）And put Corbicula fluminea in a suitable place to breed（Third month）.
June 5, water transparency 25cm in enclosure, chlorophyll concentration reaches 60ug/L, and cyanobacteria accounts in phytoplankton
Than 80%, wherein grain size is more than the 75% of 50 μm of cyanobacteria colonial organism Liang Zhan cyanobacterias group total biomasses.Start according to design real
It tests, is that September samples on the 5th after three months, it is as a result as follows：Silver carp flathead processing group, chlorophyll concentration rise to 72ug/L, phytoplankton population
Middle cyanobacteria accounting 75% is fallen, grain size is more than the 23% of 50 μm of cyanobacteria colonial organism Liang Zhan cyanobacterias group total biomasses, transparency 20cm；
Alumstone ore processing group, chlorophyll concentration 56ug/L, cyanobacteria accounting 65% in phytoplankton, wherein grain size is more than 50 μm of indigo plants
The 60% of algae colonial organism Liang Zhan cyanobacterias group total biomass, transparency 30cm；Corbicula fluminea processing group, chlorophyll concentration reach 42ug/
L, cyanobacteria accounting 65% in phytoplankton, wherein grain size is more than 50 μm of cyanobacteria colonial organism Liang Zhan cyanobacterias group total biomasses
55%, transparency 38cm；Integrated treatment group, chlorophyll concentration reach 13ug/L, cyanobacteria accounting 20% in phytoplankton,
In, grain size is more than the 15% of 50 μm of cyanobacteria colonial organism Liang Zhan cyanobacterias group total biomasses, and transparency reaches 100cm.
In short, for chlorophyll concentration, silver carp flathead processing group is slightly increased instead, and alumstone ore processing group slightly has
Point declines 7%, and Corbicula fluminea processing group reduces about 30%, and then pole is remarkably decreased 78% to integrated treatment group, and the variation of chlorophyll concentration is from water body
The improvement degree of transparency it can also be seen that.
Claims (10)
1. a kind of method promoting eutrophic water body transparency, which is characterized in that include the following steps：
（1）Choose target water body；
（2）Filter-feeding silver carp bighead is launched into target water body；
（3）When cyanobacteria colonial organism amount of the grain size more than 50 μm is less than the 30% of cyanobacteria group total biomass, into target water body
It launches so that cyanobacteria phase transition is the mineral of green alga.
2. according to the method described in claim 1, it is characterized in that, step（1）The method of the selection target water body, including
Following steps：
（1-1）Ratio in analyzing water body shared by the group of the composition and cyanobacteria different-grain diameter of phytoplankton cyanobacteria and green alga；
（1-2）Phytoplankton ratio shared by cyanobacteria reaches 80% or more the cyanobacteria colonial organism amount with grain size more than 50 μm
60% or more water body of cyanobacteria group total biomass is target water body.
3. according to the method described in claim 1, it is characterized in that, step（2）In, the throw-in density of the filter-feeding silver carp bighead
For 10 ~ 30g/m3。
4. according to the method described in claim 1, it is characterized in that, step（2）In, the specification of the filter-feeding silver carp bighead is 50
~ 500g/ tails.
5. according to the method described in claim 1, it is characterized in that, step（3）In, described so that cyanobacteria phase transition is green alga
Mineral be alunite miberal powder.
6. according to the method described in claim 1, it is characterized in that, step（3）In, the injected volume of the mineral is 1mg/L.
7. according to the method described in claim 1, it is characterized in that, step（3）In, the putting mode of the mineral is：Every 3
It launches 1 time within ~ 5 days, it is continuous to launch 5-7 times.
8. according to the method described in claim 1, it is characterized in that, the method is further comprising the steps of：
（4）Launch so that cyanobacteria phase transition be green alga mineral after, the phytoplankton ratio shared by the cyanobacteria is less than 20%, to
Filter feeding bivalves are launched in target water body.
9. according to the method described in claim 8, it is characterized in that, step（4）In, the Filter feeding bivalves are Corbicula fluminea.
10. according to the method described in claim 8, it is characterized in that, step（4）In, the dispensing of the Filter feeding bivalves is close
Degree is 50 ~ 500g/m3, the shellfish of dispensing can further filter drinking water body green alga, improve water transparency, stablize lake ecosystem
System.
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Cited By (2)
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| CN110563278A (en) * | 2019-09-29 | 2019-12-13 | 中国环境科学研究院 | Method for treating phytoplankton through non-classical biological manipulation |
| CN115176734A (en) * | 2022-07-12 | 2022-10-14 | 武汉中科水生环境工程股份有限公司 | Water ecosystem construction method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110563278A (en) * | 2019-09-29 | 2019-12-13 | 中国环境科学研究院 | Method for treating phytoplankton through non-classical biological manipulation |
| CN115176734A (en) * | 2022-07-12 | 2022-10-14 | 武汉中科水生环境工程股份有限公司 | Water ecosystem construction method |
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