CN109052834A - A kind of administering method of eutrophication water - Google Patents

A kind of administering method of eutrophication water Download PDF

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Publication number
CN109052834A
CN109052834A CN201810992193.1A CN201810992193A CN109052834A CN 109052834 A CN109052834 A CN 109052834A CN 201810992193 A CN201810992193 A CN 201810992193A CN 109052834 A CN109052834 A CN 109052834A
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water
water body
bacillus subtilis
spread
denitrifying bacteria
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董善锐
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董善锐
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/34Biological treatment of water, waste water, or sewage characterised by the microorganisms used
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/72Treatment of water, waste water, or sewage by oxidation

Abstract

The invention discloses the administering methods of eutrophication water, bacillus subtilis, nitrobacteria, denitrifying bacteria are mixed in a certain ratio uniformly, denitrogenation dephosphorization algal control complex microorganism preparations are made, the content of beneficial bacterium in denitrogenation dephosphorization algal control complex microorganism preparations: bacillus subtilis >=8.0 × 108cfu/g, nitrobacteria >=2.0 × 106cfu/g, denitrifying bacteria >=2.0 × 106cfu/g;Water body to be administered is spread into the throwing of potassium hydrogen persulfate composite salts particle Direct Uniform, directly throws and spreads by the dosage of 50~1000 grams/acre/meter, water body is made to be maintained at 500MV or more current potential;Potassium hydrogen persulfate composite salts are put into after administering water body 12 hours, and water body to be administered is spread in the throwing of denitrogenation dephosphorization algal control complex microorganism preparations Direct Uniform, directly throws and spreads by the dosage of 50~500 grams/acre/meter.It directly launches stage by stage, does not need to be aerated, denitrogenation dephosphorization effect of algae restraint is obvious, makes that water body potential balance, bacterium balance each other, algae is balanced each other, and forms self-purification of water ability.

Description

A kind of administering method of eutrophication water
Technical field
The invention belongs to technical field of environmental management, more particularly to a kind of method of water body treating, especially in richness The administering method of nutritive water.
Background technique
In recent years, with the increasingly increase to environmental resource development and utilization dynamics, largely contain nitrogen and phosphorus element nutriment Pollutant be continually drained lake, reservoir and river, be continuously increased the Nutrient loads amount of water body.On the other hand, to mention High crop yield, the chemical fertilizer and excrement of animals of using in farmland increase year by year, through rain drop erosion and infiltration, into the nutrition of water body Substance is increasing.Since the influence of these human factors gets worse the pollution of water body and eutrophication problem.Eutrophy The effective improvement for changing water body, which has become, compels important environmental problem to be solved.
Water eutrophication refers to that under the influence of mankind's activity, the nutriments such as biology required nitrogen, phosphorus largely enter The slow flow water bodies such as lake, river and lake, bay, pond cause algae and other planktonic organisms to breed rapidly, under Dissolved Oxygen in Water amount The phenomenon that drop, water quality deterioration, fish and other biological mortality.Water eutrophication accelerates water body aging, makes aquatic ecological System and function of water body are affected and destroy, influence water resource utilization, to drink, industrial or agricultural water supply, aquaculture, tourism with And water transportation etc. brings massive losses, and constitutes the phenomenon that endangering to human health.
When eutrophication occurs in water body, planktonic algae mass propagation forms wawter bloom, i.e., algae is a large amount of in poisons in freshwater A kind of natural ecology phenomenon of breeding.Eutrophication will affect the water quality of water body, and the transparency that will cause water reduces, so that sunlight It is difficult to penetrate water layer, to influence the photosynthesis of aquatic plant, may cause the hypersaturated state of dissolved oxygen.The mistake of dissolved oxygen Saturation and oxygen in water are few, all to aquatic animal nocuousness, cause fish mortality, bring tremendous economic to damage to raiser It loses.Meanwhile because of water eutrophication, water surface is grown using cyanobacteria, green alga as a large amount of algaes of sociales, forms one layer " green dross ", the organic substance for causing bottom to accumulate decomposes the pernicious gas generated in anaerobic condition and some planktonic organisms produce Raw biotoxin can also injure fish.Because containing NO3-N and NO2-N in eutrophic water, people and animals' long-term drinking these Content of material is more than the water of certain standard, can be also poisoned pathogenic.After formation " green dross ", underwater algae can be because cannot get Sunlight irradiates and breathes oxygen in water, not can be carried out photosynthesis.Oxygen can gradually decrease in water, and biology also can be because of oxygen in water It is insufficient and dead.The algae and biology to die can carry out oxidation again in water, and at this moment water body can also become very smelly, water resource Also can be contaminated not reusable, it had not only polluted environment but also had influenced to sight.
Currently, be directed to eutrophication, home and abroad mainly with the following method:
1. sewage separation changes water ,/dilution, deep layer draining, aeration/is mixed, is dredged, mechanical receiving the physical methods such as careless algae.Such as application Number be CN201310329279.3, a kind of entitled Chinese invention of eutrophication water resource type treating device and method Patent comprising experimental box is equipped with demarcation plate between the experimental box two sidewalls, and the experimental box is divided into water quality by the demarcation plate Regulatory region and test block;The opposite end being connected on the experimental box with the two sidewalls is respectively water inlet end and water outlet, institute It states and is respectively equipped with the first inlet gate and the first water outlet gate on water inlet end and the water outlet, the demarcation plate is equipped with second It is discharged gate;It is equipped with the illumination control device for regulating illumination intensity above the test block, is equipped with inside the test block For controlling the temperature control tube of water temperature.
2. deep water aeration process, nutrients are passivated, aluminium salt and inorganic and particle phosphorus generate the chemical methodes such as precipitating.
3. biological purification methods such as brown alga powder extracts.Such as application No. is CN200510000120.2, entitled one Kind administers the Chinese invention patent of the method for eutrophication water, and the improvement eutrophic water body method provided is: to water body Middle sprinkling brown alga extract, final concentration of 10-200mg/L of the brown alga extract in water body, and water body described in Air Exposure;Its In, the brown alga extract extracts as follows: 1. impregnate brown alga powder with water, be made slurries, the slurries it is dense Degree is 5-20g/L;2. methanol is added in the slurries, clear liquid is collected in extraction, filtering, and the methanol is the 20- of slurry volume 40%;3. adjusting pH4-5 after gained clear liquid is removed methanol, the brown alga extract is obtained.This method is widely used in lake, public affairs The improvement of the water bodys such as garden, pond.
4. biological purification methods such as biological grid recovery techniques.Such as application No. is CN201610744698.7, entitled cities The Chinese invention patent of wastewater treatment method comprising following steps: 1. waste water enter grille well, remove large volume in precipitation tank Polluter;2. the water outlet in the precipitation tank enters contact-oxidation pool, it is equipped with venthole in the bottom of contact-oxidation pool, and It is passed through air, then flows into sand filter;3. the water outlet of the sand filter flows into anaerobic sludge digestion unit and carries out digestion process, supernatant Liquid is back to sand filter;4. treated that water outlet enters biochemistry pool for step 3, add in the biochemistry pool micro- with bacillus Biology is the flora of dominant bacteria;5. the water outlet of the biochemistry pool contacts body device by BBR.
By long-term social practice, finally it is concluded that
1. the implementation project amount using physical method is big, at high cost, effect is held time shorter;
2. chemical method is quick, but there are effects to hold time the drawbacks of short, there are secondary pollutions;
3. the biological purification methods such as brown alga powder extracts, Biomembran repair technology be both not suitable for the low value-added water of piscina Body, is also not suitable for the water body processing big as waters such as Dian Chi, Taihu Lake, and engineering construction difficulty and expense investment huge all limit It is used, and brown alga powder extracts are also by the very big limitation of source resource.
In conclusion existing technology has the following problems: power consumption is high, investment is huge, nitrogen, phosphorus removal rate not Height, is not achieved water body potential balance, bacterium is balanced each other, algae is balanced each other, and can not form self-purification of water ability.
Therefore, how to solve the problems of the above-mentioned prior art becomes the direction of field technical staff effort.
Summary of the invention
It is an object of the invention to provide a kind of administering method of eutrophication water, denitrogenation dephosphorization effect of algae restraint is bright It is aobvious, make that water body potential balance, bacterium balance each other, algae is balanced each other, form self-purification of water ability, it is quick using simple, operation and Maintenance cost is cheap, and environmental benefit is good;It can effectively solve the quality problem of eutrophication water.
The purpose of the present invention is realized by following technical proposals: a kind of administering method of eutrophication water comprising Following steps:
Bacillus subtilis, nitrobacteria, denitrifying bacteria are mixed in a certain ratio uniformly, denitrogenation dephosphorization are made by the first step Algal control complex microorganism preparations, the content of beneficial bacterium in denitrogenation dephosphorization algal control complex microorganism preparations: bacillus subtilis >=8.0 ×108Cfu/g, nitrobacteria >=2.0 × 106Cfu/g, denitrifying bacteria >=2.0 × 106cfu/g;
The throwing of potassium hydrogen persulfate composite salts particle Direct Uniform is spread water body to be administered, by 50~200 grams/acre/meter by second step Dosage is directly thrown and is spread, and water body is made to be maintained at 500MV or more current potential;
Third step, potassium hydrogen persulfate composite salts are put into after administering water body 12 hours, by denitrogenation dephosphorization algal control complex microorganism Water body to be administered is spread in the throwing of preparation Direct Uniform, is directly thrown and is spread by the dosage of 50~500 grams/acre/meter.
It is preferred that one of, bacillus subtilis, nitrobacteria, denitrifying bacteria mixed proportion be 6:2:2.
It is preferred that one of, bacillus subtilis, nitrobacteria, denitrifying bacteria mixed proportion be 5.5: 2.25:2.25。
It is preferred that one of, bacillus subtilis, nitrobacteria, denitrifying bacteria mixed proportion be 5:2.5: 2.5。
Bacillus subtilis (Bacillus subtilis) is one kind of bacillus.Individual cells 0.7~0.8 × 2 ~3 microns, uniform coloring.Without pod membrane, peritrichous can be moved.Gram-positive bacteria, gemma 0.6~0.9 × 1.0~1.5 are micro- Rice, ellipse arrive column, and central or slightly inclined positioned at thallus, thallus does not expand after sporulation.Bacterium colony rough surface is opaque, dirty white Color is yellowish, and when growing in liquid medium, wrinkle mould is commonly formed.It is a kind of aerobic bacteria, is widely distributed in soil and corruption Organic matter in, easily withered grass leaching juice in breed.
Bacillus subtilis has very strong inhibition to harmful microorganisms such as vibrios, Escherichia coli and baculovirals in aquatic products Effect effectively prevents aquatic livestock enteritis, the diseases such as gill rot.Secrete the function of a large amount of chitinases, the decomposable disease of chitinase The cell wall of fungal pathogens and inhibit fungal disease, decompose aquaculture pond in poisonous and harmful substance, purify water;It is residual in decomposing pool Bait, excrement, organic matter etc. have the short grained effect of rubbish in very strong cleaning water.
In addition, bacillus subtilis can improve water turbidity problem caused by harmful cyanobacteria is overflowed, water quality becomes clear by muddy, With very strong Function For Purifying Water, the activity with stronger protease, lipase, amylase promotes nutrient in feed Degradation makes aquatic product animal being absorbed and utilized more sufficiently to feed;Bacillus subtilis can also reduce shrimp disease, Prawn yield can be greatly improved, to increase economic efficiency, biological environmental production stimulates the development of aquatic livestock immune organ, increases Strong immunity of organisms;Reduce shrimp disease, hence it is evident that it improves prawn yield and purifies water to increase economic efficiency, no dirt Dye, noresidue.
Nitrobacteria (Nitrifying bacteria) is a kind of aerobic bacteria, including Nitrosomas and nitric acid Bacterium.It lives in aerobic water or in layer of sand, plays critically important role during nitrogen cycle purification of water quality.Nitrobacteria For controlling the spontaneous ammonia density of culturing pool, use is quite convenient, and can play the effect got instant result.Commercially available nitrobacteria Preparation can be divided into viable bacteria and two kinds of suspend mode bacterium, the former is made of the living body using bacterium, under microscopical observation, it can be seen that it Activity situation;The latter is made of in microscopical observation, then can not to see that they have movable energy using suspend mode bacterium Power.
Denitrifying bacteria is a kind of bacterium that can cause denitrification.Mostly heterotrophism, facultative anaerobic bacteria, such as denitrification Bacillus, Si Shi bacillus, firefly air exhaustion hair bacillus etc. are fermented with excellent denitrification bacterial strain through special process.Bacterial strain denitrification energy Power is strong, can make nitrogen source with nitrite nitrogen and nitrate nitrogen, and activation is simple, and rapidly, function and effect are significant, and 24 hours visible for breeding Effect.There is special efficacy for the higher situation of cultivation water nitrite;Nitrogen can be largely consumed for the water body of algae excessive propagation Plain nutrition cuts off algae nitrogen nutrition, safeguards good water colour;Bacterial strain can survive and carry out under dissolved oxygen abundance and anaerobic condition Anti-nitration reaction optimizes physics, the chemical environment of substrate.
Potassium hydrogen persulfate composite salts are a kind of white particle sprills of free-flowing, soluble easily in water, by hydrogen persulfate Potassium KHSO5, potassium acid sulfate KHSO4With potassium sulfate K2SO4Three kinds at being grouped as.The oxidative function of potassium hydrogen persulfate composite salts comes From in peracid chemical property, being a kind of highly effective oxidant, disinfectant.
Compared with prior art, the beneficial effects of the present invention are: directly launched one to eutrophication water stage by stage Potassium acid sulfate complex salt and denitrogenation dephosphorization algal control complex microorganism preparations, do not need to be aerated, and denitrogenation dephosphorization effect of algae restraint is obvious, Make that water body potential balance, bacterium balance each other, algae is balanced each other, forms self-purification of water ability, specifically:
1. using the reproducibilities harmful substance such as potassium hydrogen peroxymonosulfate oxidation of sulfureted hydrogen, nitrite, change bottom deodorization;
2. using the strong oxidation of potassium hydrogen persulfate composite salts, the pollutants such as degrading pesticide, herbicide, algae toxin make this A little organic pollutants resolve into small-molecule substance, and precipitating becomes the organic floc sedimentation of little particle, form the breeding ground of microniological proudcts growth, It is utilized by microbial flora;
3. using bacillus subtilis denitrogenation dephosphorization algal control in denitrogenation dephosphorization algal control complex microorganism preparations, by eutrophic water body Middle oxidation operation is decomposed into inorganic water, carbon dioxide and ammonia ammonia, is nitrite and nitre using nitrobacteria Ammonia Nitrification Nitrite and nitrate reduction are gaseous state nitride and nitrogen using denitrifying bacteria, do not form toxic byproduct, pacify by hydrochlorate Quan Xinggao eliminates pollution sources, and the wawter blooms such as cyanobacteria are cleared up naturally, is restored beneficial to algae, be finally reached algae balance each other, water body it is molten Oxygen, transparency increase are solved, to realize lake, pond etc. " in-situ immobilization, treating both manifestation and root cause of disease ";
4. application method of the present invention is simple, operation and maintenance cost are cheap, quick, are environmentally friendly administering method, environment It is profitable;
5. invention can be widely used in the improvement of lake, pond, landscape water body etc..
Specific embodiment
The present invention is further illustrated combined with specific embodiments below.
Embodiment 1:
Deyang City a certain lake in Sichuan, according to China's lake eutrophication grade scale, is determined as rich battalion by 1200 square metres of area Support water quality.It is administered using administering method of the present invention, reaches surface water and Lake Water water quality national standard.
Table 1: China's lake eutrophication grade scale
The final goal of bioremediation of waters is that water body is made to reach surface water and Lake Water water quality national standard.To reach this mesh , environmental management department requires control ammonia nitrogen, total phosphorus, transparency this three water body basic indexs.According to the dirt of China's water body environment Overall state is contaminated, ammonia-nitrogen content is usually scheduled on II class standard of surface water, 0.5 mg.L at present−1;Total phosphorus content is scheduled on Lake Water III class standard, 0.025-0.1 mg.L−1;Transparency is scheduled on IV class standard of Lake Water, and 1.5 m, earth's surface water clarity is without standard;It is rich Nutrient laden water body in lake transparency generally only 0.2-0.3 m.
The administering method for the eutrophication water that the present embodiment uses, includes the following steps:
Bacillus subtilis, nitrobacteria, denitrifying bacteria are uniformly mixed by the first step in the ratio of 6:2:2, and obtained denitrogenation is gone Phosphorus algal control complex microorganism preparations.By measuring so that the content of beneficial bacterium reaches in denitrogenation dephosphorization algal control complex microorganism preparations Arrive: bacillus subtilis >=8.0 × 108cfu/g, nitrobacteria >=2.0 × 106cfu/g, denitrifying bacteria >=2.0 × 106cfu/g。
The throwing of potassium hydrogen persulfate composite salts particle Direct Uniform is spread water body to be administered, by 150 grams/acre/meter by second step Dosage is directly thrown and is spread, and with apparatus measures, water body is made to be maintained at 500MV or more current potential.
Third step, potassium hydrogen persulfate composite salts are put into after administering water body 12 hours, and denitrogenation dephosphorization algal control is compound micro- Water body to be administered is spread in the throwing of biological agent Direct Uniform, is directly thrown and is spread by the dosage of 400 grams/acre/meter.It is compound to potassium hydrogen peroxymonosulfate After salt plays a role in water, and its biocidal efficacies is lost after 12h, then carries out the denitrogenation of microorganism formulation.Denitrogenation Journey is based on nitrification, denitrification.Nitrification is broadly divided into 2 stages: the first stage be by nitrosation bacillus, Nitrosospira, Nitrosococcus etc. are by NH3It is oxidized to nitrite;Second stage is bacterium nitrobacter, nitrification coccus, nitrification Nitrite is further oxidized to nitrate by thorn bacterium etc..And bacillus, brevibacterium, false single pole bacterium etc. will in denitrification Nitrate removes water body, the aerobic bacteria for improving water body pH and facultative anaerobic bacteria.
Potassium hydrogen persulfate composite salts and denitrogenation dephosphorization algal control composite microbial are directly launched to eutrophication water stage by stage Object preparation does not need to be aerated.Potassium hydrogen persulfate composite salts are finally maintained at water body by directly buying commodity product(s) in the market 500MV or more current potential.It directly comes into operation, with the reproducibilities harmful substance such as potassium hydrogen peroxymonosulfate oxidation of sulfureted hydrogen, nitrite, changes Bottom deodorization;Using the strong oxidation of potassium hydrogen persulfate composite salts, the pollutants such as degrading pesticide, herbicide, algae toxin make this A little organic pollutants resolve into small-molecule substance, and precipitating becomes the organic floc sedimentation of little particle, form the breeding ground of microniological proudcts growth, It is utilized by microbial flora.Pressed down simultaneously using bacillus subtilis denitrogenation dephosphorization in denitrogenation dephosphorization algal control complex microorganism preparations Oxidation operation in eutrophic water body is decomposed into inorganic water, carbon dioxide and ammonia ammonia, utilizes nitrobacteria Ammonia Nitrification by algae It by nitrite and nitrate reduction is gaseous state nitride and nitrogen using denitrifying bacteria, no for nitrite and nitrate Toxic byproduct is formed, it is highly-safe, eliminate pollution sources, the wawter blooms such as cyanobacteria are cleared up naturally, are restored, are finally reached beneficial to algae Algae is balanced each other, Dissolved Oxygen in Water, transparency increase, to realize lake, pond etc. " in-situ immobilization, treating both manifestation and root cause of disease ".
From the point of view of practice result, compared with traditional physics, chemical harnessing method, microorganisms in water of the present invention is controlled Reason method has the advantage that cost saving, the only 30%-50% of traditional environment engineering technology;Environment influences small, leftover problem It is few, the transfer of without secondary pollution and pollutant;It can effectively reduce pollutant concentration;Repair time is shorter;Operator is straight with pollutant Touch opportunity reduction is connect, harm will not be generated to people;It controls easy to operate, ambient enviroment is interfered few.
Embodiment 2:
The a certain lake in Deqing city of Yunnan Province, according to China's lake eutrophication grade scale, is determined as richness by 1500 square metres of area Nutrition water quality.It is administered using administering method of the present invention, reaches surface water and Lake Water water quality national standard.
A kind of administering method of eutrophication water, includes the following steps: the first step, and bacillus subtilis, nitrification is thin Bacterium, denitrifying bacteria are uniformly mixed in the ratio of 5.5:2.25:2.25, and denitrogenation dephosphorization algal control complex microorganism preparations are made, take off The content of beneficial bacterium in nitrogen dephosphorization algal control complex microorganism preparations: bacillus subtilis >=8.0 × 108cfu/g, nitrobacteria >= 2.0 × 106cfu/g, denitrifying bacteria >=2.0 × 106cfu/g;Second step, potassium hydrogen persulfate composite salts particle is directly equal Water body to be administered is spread in even throwing, is directly thrown and is spread by the dosage of 100 grams/acre/meter, water body is made to be maintained at 500MV or more current potential;Third Step, potassium hydrogen persulfate composite salts are put into after administering water body 12 hours, and denitrogenation dephosphorization algal control complex microorganism preparations are direct It uniformly throws and spreads water body to be administered, directly throw and spread by the dosage of 300 grams/acre/meter.
Embodiment 3:
Chongqing City WuLong a certain lake, according to China's lake eutrophication grade scale, is determined as rich battalion by 800 square metres of area Support water quality.It is administered using administering method of the present invention, reaches surface water and Lake Water water quality national standard.
A kind of administering method of eutrophication water, includes the following steps: the first step, and bacillus subtilis, nitrification is thin Bacterium, denitrifying bacteria are uniformly mixed in the ratio of 5:2.5:2.5, denitrogenation dephosphorization algal control complex microorganism preparations are made, denitrogenation is gone The content of beneficial bacterium in phosphorus algal control complex microorganism preparations: bacillus subtilis >=8.0 × 108cfu/g, nitrobacteria >=2.0 × 106cfu/g, denitrifying bacteria >=2.0 × 106cfu/g;Second step, by potassium hydrogen persulfate composite salts particle Direct Uniform Water body to be administered is spread in throwing, is directly thrown and is spread by the dosage of 120 grams/acre/meter, water body is made to be maintained at 500MV or more current potential;Third step, Potassium hydrogen persulfate composite salts are put into after administering water body 12 hours, by denitrogenation dephosphorization algal control complex microorganism preparations Direct Uniform Water body to be administered is spread in throwing, is directly thrown and is spread by the dosage of 350 grams/acre/meter.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.

Claims (4)

1. a kind of administering method of eutrophication water, characterized by the following steps:
Bacillus subtilis, nitrobacteria, denitrifying bacteria are mixed in a certain ratio uniformly, denitrogenation dephosphorization are made by the first step Algal control complex microorganism preparations, the content of beneficial bacterium in denitrogenation dephosphorization algal control complex microorganism preparations: bacillus subtilis >=8.0 ×108Cfu/g, nitrobacteria >=2.0 × 106Cfu/g, denitrifying bacteria >=2.0 × 106cfu/g;
The throwing of potassium hydrogen persulfate composite salts particle Direct Uniform is spread water body to be administered, by 50~1000 grams/acre/meter by second step Dosage directly throw and spread, so that water body is maintained at 500MV or more current potential;
Third step, potassium hydrogen persulfate composite salts are put into after administering water body 12 hours, by denitrogenation dephosphorization algal control complex microorganism Water body to be administered is spread in the throwing of preparation Direct Uniform, is directly thrown and is spread by the dosage of 50~500 grams/acre/meter.
2. the administering method of eutrophication water according to claim 1, it is characterised in that: bacillus subtilis, nitrification Bacterium, denitrifying bacteria mixed proportion be 6:2:2.
3. the administering method of eutrophication water according to claim 1, it is characterised in that: bacillus subtilis, nitrification Bacterium, denitrifying bacteria mixed proportion be 5.5:2.25:2.25.
4. the administering method of eutrophication water according to claim 1, it is characterised in that: bacillus subtilis, nitrification Bacterium, denitrifying bacteria mixed proportion be 5:2.5:2.5.
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CN109704462A (en) * 2019-02-14 2019-05-03 杭州师范大学 A kind of algal control denitrification microorganism association type biofilter and its wastewater treatment method
CN109626601A (en) * 2019-02-20 2019-04-16 何美英 A kind of complex microorganism water purification agent and its preparation method and application
CN112320971A (en) * 2020-11-09 2021-02-05 江苏碧清园食品科技有限公司 Composite material for nitrogen and phosphorus removal of lake sewage and preparation method and application thereof

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