CN104773840A - Slow-release compound flocculant for reducing acidity of mine water - Google Patents

Slow-release compound flocculant for reducing acidity of mine water Download PDF

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CN104773840A
CN104773840A CN201510177197.0A CN201510177197A CN104773840A CN 104773840 A CN104773840 A CN 104773840A CN 201510177197 A CN201510177197 A CN 201510177197A CN 104773840 A CN104773840 A CN 104773840A
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composite flocculant
agent
slow release
release composite
slow
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CN104773840B (en
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郜春花
卢晋晶
张强
李建华
靳东升
卢朝东
吕薇
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INSTITUTE OF AGRICULTURAL ENVIRONMENT AND RESOURCE SHANXI ACADEMY OF AGRICULTURAL SCIENCES
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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
    • C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
    • C02F3/345—Biological treatment of water, waste water, or sewage characterised by the microorganisms used for biological oxidation or reduction of sulfur compounds
    • 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
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • 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
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
    • 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
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
    • 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
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/286—Treatment of water, waste water, or sewage by sorption using natural organic sorbents or derivatives thereof
    • 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
    • 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
    • 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
    • C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
    • 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
    • C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2305/00—Use of specific compounds during water treatment
    • C02F2305/04—Surfactants, used as part of a formulation or alone
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2305/00—Use of specific compounds during water treatment
    • C02F2305/14—Additives which dissolves or releases substances when predefined environmental conditions are reached, e.g. pH or temperature

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  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)

Abstract

The invention discloses a slow-release compound flocculant for reducing acidity of mine water. The slow-release compound flocculant is prepared from the following raw materials in percentage by weight: 87wt%-95wt% of an inorganic compound flocculant and 5wt%-13wt% of a soluble coating material, wherein the soluble coating material wraps the inorganic compound flocculant; the inorganic compound flocculant is a mixture of a microbial carbon source, a coagulant aid and an adsorbent; the soluble coating material is a culture medium mixed with a microbial agent; and the microbial agent is a mixed agent prepared from a desulfovibrio agent, a colourless sulfur bacteria agent and a gluconobacter agent. According to the slow-release compound flocculant, the characteristics of inorganic and biological flocculants are integrated; a chemical dosing mode is improved; the interaction efficiency of various flocculants is increased by multi-step dissolving and slow-release processes; and the efficiency of the agent is improved.

Description

A kind of slow release composite flocculant for reducing pit water acidity
Technical field
The present invention relates to a kind of water conditioner, particularly relate to a kind of flocculating agent used in water processing for acid mine water.
Background technology
The pit water that pH value is less than 5.5 is called acid mine water, is the main water pollutant produced in progress of coal mining, is also one of factor causing mining area water ecological environment to worsen.The oxidation of coal medium sulphide content, the oxidation of ferrous ion are the main reason of pit water souring.
Main methods at present for acid mine water comprises neutralisation, artificial swamp method, sulphide precipitation and microbial method.Neutralisation is the hydrogen ion come by feeding lime stone or lime in neutralized wastewater, and shortcoming is that cost is higher, and the calcium sulfate residue that reaction generates is more, easily causes secondary pollution; Artificial swamp method is that the plant utilized in wet land system, soil etc. adsorb the metal ion in acid waste water, filter, and this method is simple to operate, is easy to management, but floor space is large, and degree for the treatment of is easily affected by environment, and H remaining after process 2s can cause topsoil; Sulphide precipitation carries out selective precipitation by adding sulfide to the metal ion in waste water, there is processing cost high, again can cause the problems such as environmental pollution under aerobic conditions.
Microbial method utilizes sulphate reducing bacteria (SRB) to be under anaerobic sulfide by the sulfate reduction in acid mine water, and the sulfide of generation reacts with the heavy metal in waste water and generates insoluble metallic sulfide.Utilize microbial method to carry out pit water desulfurization deironing process, there is reaction conditions gentleness, cost is low, energy consumption is low and the features such as non-secondary pollution, thus paid close attention to widely.
Flocculation process is indispensable key link in current wastewater treatment process both at home and abroad.The quality of flocculating effect often determines the operation conditions of follow-up flow process, and final effluent quality and processing costs, selects which kind of flocculation agent, for improving effluent quality, reduces water producing cost and has important Technological Economy to be worth.Now widely used chemical floc all shows certain ecological insecurity in production and use procedure, causes secondary pollution, therefore gradually sight is turned to biological field both at home and abroad to environment.
Microbial flocculant (Microbial flocculant, be called for short MBF) be that a class is produced by microorganism and is secreted into the meta-bolites that extracellular has flocculation activity, be the water conditioner of the cheapness of efficient, nontoxic, the non-secondary pollution with Biodegradable and security.
Research abroad for microbial flocculant is very extensive, and domestic research is also in the bacteria selection stage, mainly has that cost is higher, processing capacity is single, vital preservation is difficult, be difficult to the shortcomings such as industrialization.In view of the limitation of microbial flocculant, low-cost high-efficiency compound biological flocculant (the Compound bioflocculant that development composition is various, CBF) new direction of microbial flocculant research is become, the combination product of this kind of microbial flocculant and other flocculation agent can be had complementary advantages, and strengthens usefulness.
CN 101671074A discloses a kind of neutralizing agent for Zhaotong Prefecture's acid mine water process and preparation method thereof, it is using the main component of the Permian Maokou dolomitic limestone of Zhaotong region of Yunnan Province as treating mine drainage, draw materials conveniently, but there is no the microbial method of comprehensive other environmental protection Du Genggao.CN 101935621B discloses strain Acidithiobacillus ferrooxidans strain GF genetic engineering bacterium and an application thereof, by transgenic method by iron protoxide electron transport chain PROTEIN C YC1 channel genes Acidithiobacillus ferrooxidans strain GF, to improve its Oxidation of Fe 2+the ability of ion, and refer to the application of this bacterium on process acid mine water, but its effect is comparatively single, does not coordinate other inorganic process synchronously to carry out treating mine drainage.CN 103466842A Acid mine water treatment method utilizes to have the tertiary treatment device of drop to carry out treating mine drainage, utilize the cheap material such as flyash, shell as filtering material, effectively can solve the acid mine water pollution problem in mining area, but the method cost of investment is comparatively large, and operation steps is also relatively loaded down with trivial details.Also widely use Wingdale flocculation agent process acid mine water at present, but the ironic hydroxide being difficult to precipitate produced in treating processes, ferrous hydroxide floss are coated on lime particle surface, in greatly reducing and efficiency, after process, the pH value of pit water is difficult to the emission request reaching national regulation, and it is lower to the removal effect of iron, precipitate also more, easily cause secondary pollution.
Summary of the invention
The object of this invention is to provide a kind of slow release composite flocculant for reducing pit water acidity, the method for being flocculated by microorganism and inorganic compounding, improve speed and the efficiency of acid mine water process.
Slow release composite flocculant for reducing pit water acidity of the present invention is made up of the inorganic composite flocculant of 87 ~ 95wt% and the solubility coating be coated on described inorganic composite flocculant of 5 ~ 13wt%, wherein:
Described inorganic composite flocculant is made up of the mixing of 40 ~ 50 mass parts microbe carbon source, 20 ~ 35 mass parts coagulant aidss and 3 ~ 10 mass parts sorbent materials;
Described solubility coating is the substratum being mixed with microbiobacterial agent, the mix bacterium agent that microbiobacterial agent is wherein made up of desulfovibrio microbial inoculum, colorless sulfur bacteria microbial inoculum and gluconobacter sp microbial inoculum, meets in every gram of coating containing total viable count 6 × 10 9~ 1 × 10 11individual, and the viable count of desulfovibrio, colorless sulfur bacteria and gluconobacter sp is than being (1 ~ 1.5): (1 ~ 1.5): 0.5.
In inorganic composite flocculant of the present invention, described microbe carbon source is the arbitrary proportion mixture of one or more in flyash, peat, glucose.
Described coagulant aids is CaCl 2with one or both the arbitrary proportion mixture in gelatine.
Described sorbent material is the arbitrary proportion mixture of one or more in gac, zeolite, coal gangue, shell.
Further, a small amount of ferrous sulfate can also be added with in described microbe carbon source.The add-on of ferrous sulfate accounts for 0.04 ~ 0.2% of microbe carbon source total mass.
In solubility coating of the present invention, described substratum is the mixed culture medium of one or more compositions in starch, soluble cellulose and extractum carnis substratum.
Preferably, solubility coating of the present invention to be mixed with 0.8 ~ 3 mass parts microbiobacterial agent by 7 ~ 10 mass parts substratum to form.
More preferably, the colorless sulfur bacteria described in the present invention be by thiobacillus ferrooxidant with Acidithiobacillus thiooxidans with (0.2 ~ 1): the mixed bacterium that the ratio of 1 mixes.
The slow release composite flocculant that the present invention prepares is the spherical of particle diameter 0.5 ~ 3.0mm or almost spherical particle.
The methods such as slow release composite flocculant of the present invention can adopt injection compound, chemical cross-linking agent mixes and stirs, reagent coating, prepare with solubility coating coated inorganic composite flocculation agent.
Slow release composite flocculant of the present invention both make use of the desulfurization of microbial method except Fe 2+effect, combines again the powerful throwing out of inorganic compounding flocculation and biofloculation, makes flocculating effect obtain maximum exploitation.Its action principle is: after slow release composite flocculant carries out water body, and first the solubility coating on top layer is dissolved, and various microbiobacterial agent rate is introduced into water body, utilizes microbial method to carry out desulfurization except Fe 2+.On the one hand, under sulphate reducing bacteria (desulfovibrio) effect, can be efficiently sulfide at a low price by sulfate reduction, i.e. SO 4 2-be reduced into H 2s, the thiobacillus thiooxidans then in colorless sulfur bacteria is again by H 2s is oxidized to elemental sulfur and removes; On the other hand, the existence of biting the ferrous thiobacillus of acidic oxidation can accelerate Fe 2+oxidation, produce Fe 3+, and then hydrolysis forms Fe (OH) 3precipitation; Part H 2s also can with Fe 3+generate insoluble metallic sulfide precipitation; Thus effectively eliminate and cause acid ion in pit water.The inorganic composite flocculant of nexine enters in water subsequently, and microbe carbon source and inorganic coagulant aids, sorbent material are discharged.Carbon source maintains the metabolism needs of microorganism noted earlier on the one hand, and the metabolite of inorganic composite flocculant and part microorganism (gluconobacter sp) can make the precipitation generated obtain Adsorption and flocculation on the other hand, departs from water body; Add CaCl 2deng the effect of coagulant aids and sorbent material, the precipitation generated can be adsorbed very soon; Simultaneously along with the continuous metabolism of microorganism gluconobacter sp, the flocculating effect of its secretory product to pit water is constantly strengthened.It is combined with inorganic composite flocculant, and the clearance of pit water suspended substance can reach more than 98%.Therefore, the biological components in slow release composite flocculant and inorganic component according to certain sequence generation effect, thus have given full play to the task performance of multiple mechanism.
Slow release composite flocculant of the present invention combines the feature of microbial method and inorganic composite flocculant, by microbial method, high-efficiency desulfurization deferrization is carried out to acid mine water, utilize inorganic flocculation and biofloculation to flocculate to the sulfide precipitation generated, iron oxide deposits simultaneously, that reduces pit water causes acid ion, to reach the object reducing pit water acidity.The present invention can play the feature that microbial method environmental-protecting performance is high, reaction conditions is gentle, cost is low, energy consumption is low, powerful flocculation efficiency that is biological and inorganic composite flocculant can be utilized again, overcome the shortcoming that other general organic-inorganic chemical floc floc strengths are low, consumption large, pollution is many, substantially increase speed and the efficiency for the treatment of mine drainage.
Slow release composite flocculant of the present invention improves pharmacy effect mode, by variant component flocculation agent is carried out slowly-releasing process, step-wise dissolution, Circulation pattern is formed in the process that each compound is dissolved after adding, namely-flocculation-absorption is precipitated, so namely, provide the action time that each medicament is relatively independent, in turn ensure that the complementarity between the continuity of each pharmacy effect time and usefulness, enable each medicament give full play to its performance.Dissolved the process of slowly-releasing by multistep, add the functioning efficiency of various component, improve the usefulness of medicament.
Slow release composite flocculant of the present invention integrates the functions such as sewage flocculation reaction, precipitation, absorption, medicament sequence effect in time makes compound overall efficiency increase, decrease consumption, simplify administration apparatus, sewage treatment is simple, reduce running cost, also reduce secondary pollution simultaneously.
Embodiment
Embodiment 1
Get peat 40 Kg, glucose 10 Kg, gelatine 30 Kg, gac 7 Kg, ferrous sulfate 0.03 Kg, be uniformly mixed, add 20 ~ 28 L water, Keep agitation 20 ~ 30 min, carry out disk or extruder grain, dry, obtain the inorganic composite flocculant of particle diameter 0.2 ~ 2.5 mm.
Get starch 7.0 Kg, extractum carnis 7.0 Kg, add desulfovibrio microbial inoculum 1.0 Kg, colorless sulfur bacteria microbial inoculum 1.0 Kg(wherein thiobacillus ferrooxidant microbial inoculum 0.4 Kg, Acidithiobacillus thiooxidans microbial inoculum 0.6 Kg), gluconobacter sp microbial inoculum 0.5 Kg, mix that (viable count of often kind of microbial inoculum is all no less than 2 × 10 7~ 2 × 10 8individual/gram), then add the sterilized water of gross weight 30 ~ 40%, stir fermentation 16 ~ 24h at 28 ~ 36 DEG C and make bacterium liquid, total viable count reaches 6 × 10 9~ 1 × 10 11individual/gram.
Pour in 89 Kg inorganic composite flocculant particles by mixed culture medium 14.5 Kg (weight in wet base 3.33 Kg) after above-mentioned fermentation, fully stir 1 h, normal temperature naturally cooling is dry, obtains the slow release composite flocculant particle of particle diameter 0.5 ~ 3.0 mm.
Get the waste water of mine of certain coal mine drainage, adopt conventional chemical analysis method to detect, pH value 3.0, total Fe content 250 mg/L, SO 4 2-content 760 mg/L.Waste water is stopped 1 hour balanced water quality and quantity in equalizing tank, and suspended substance larger in preliminary removal waste water, as fine particle things such as ickings, rock dust, clays, especially coal dust.Waste water after balanced water quality enters coagulation basin and stops 20 minutes, adopts powder throwing device, by 15g/m 3consumption add the present embodiment slow release composite flocculant particle, carry out mechanical stirring, after inclined-plate clarifying basin sedimentation, again detect effluent quality, result pH value can bring up to about 6.0, and simultaneously total Fe content is reduced to 10 mg/L, SO 4 2-within content is reduced to 240 mg/L.
Embodiment 2
Get flyash 35 Kg, glucose 15 Kg, CaCl 228 Kg, zeolite 9 Kg, ferrous sulfate 0.05 Kg, be uniformly mixed, and adds 20 ~ 28 L water, and Keep agitation 20 ~ 30 min, carries out disk or extruder grain, dry, obtains the inorganic composite flocculant of particle diameter 0.2 ~ 2.5 mm.
Get starch 5.0 Kg, soluble cellulose 2.0 Kg, extractum carnis 7.0 Kg, add desulfovibrio microbial inoculum 1.0Kg, colorless sulfur bacteria microbial inoculum 1.0 Kg(wherein thiobacillus ferrooxidant microbial inoculum 0.5 Kg, Acidithiobacillus thiooxidans microbial inoculum 0.5 Kg), gluconobacter sp microbial inoculum 0.6 Kg mixes that (viable count of often kind of microbial inoculum is all no less than 2 × 10 7~ 2 × 10 8individual/gram), then add the sterilized water of gross weight 30 ~ 40%, stir fermentation 16 ~ 24 h at 28 ~ 36 DEG C, make bacterium liquid, total viable count reaches 6 × 10 9~ 1 × 10 11individual/gram.
Pour in 90 Kg inorganic composite flocculant particles by mixed culture medium 13 Kg (weight in wet base 3 Kg) after above-mentioned fermentation, fully stir 1 h, normal temperature naturally cooling is dry, obtains the slow release composite flocculant particle of particle diameter 0.5 ~ 3.0 mm.
Get the waste water of mine of certain coal mine drainage, adopt conventional chemical analysis method to detect, pH value 3.0, total Fe content 250 mg/L, SO 4 2-content 760 mg/L.Waste water is stopped 1 hour balanced water quality and quantity in equalizing tank, and suspended substance larger in preliminary removal waste water, as fine particle things such as ickings, rock dust, clays, especially coal dust.Waste water after balanced water quality enters coagulation basin and stops 20 minutes, adopts powder throwing device, by 15g/m 3consumption add the present embodiment slow release composite flocculant particle, carry out mechanical stirring, after inclined-plate clarifying basin sedimentation, again detect effluent quality, result pH value can bring up to about 6.0, and simultaneously total Fe content is reduced to 15 mg/L, SO 4 2-within content is reduced to 250 mg/L.
Embodiment 3
Get flyash 15 Kg, peat 15 Kg, glucose 20 Kg, CaCl 230 Kg, coal gangue 3 Kg, gac 7 Kg, ferrous sulfate 0.04 Kg, be uniformly mixed, and adds 20 ~ 28 L water, and Keep agitation 20 ~ 30 min, carries out disk or extruder grain, dry, obtains the inorganic composite flocculant of particle diameter 0.2 ~ 2.5 mm.
Get starch 6.0 Kg, soluble cellulose 2.0 Kg, extractum carnis 6.0 Kg, add desulfovibrio microbial inoculum 1.0 Kg, colorless sulfur bacteria microbial inoculum 1.0 Kg(wherein thiobacillus ferrooxidant microbial inoculum 0.3 Kg, Acidithiobacillus thiooxidans microbial inoculum 0.7 Kg), gluconobacter sp microbial inoculum 0.3 Kg mixes that (viable count of often kind of microbial inoculum is all no less than 2 × 10 7~ 2 × 10 8individual/gram), then add the sterilized water of gross weight 30 ~ 40%, stir fermentation 16 ~ 24 h at 28 ~ 36 DEG C, make bacterium liquid, total viable count reaches 6 × 10 9~ 1 × 10 11individual/gram.
Poured in 88 Kg inorganic composite flocculant particles by mixed culture medium 16 Kg (weight in wet base 3.7 Kg) after above-mentioned fermentation, fully stir 1h, normal temperature naturally cooling is dry, obtains the slow release composite flocculant particle of particle diameter 0.5 ~ 3.0mm.
Get the waste water of mine of certain coal mine drainage, adopt conventional chemical analysis method to detect, pH value 3.0, total Fe content 250 mg/L, SO 4 2-content 760 mg/L.Waste water is stopped 1 hour balanced water quality and quantity in equalizing tank, and suspended substance larger in preliminary removal waste water, as fine particle things such as ickings, rock dust, clays, especially coal dust.Waste water after balanced water quality enters coagulation basin and stops 20 minutes, adopts powder throwing device, by 15g/m 3consumption add the present embodiment slow release composite flocculant particle, carry out mechanical stirring, after inclined-plate clarifying basin sedimentation, again detect effluent quality, result pH value can bring up to about 6.0, and simultaneously total Fe content is reduced to 16 mg/L, SO 4 2-within content is reduced to 257 mg/L.

Claims (9)

1., for reducing a slow release composite flocculant for pit water acidity, be made up of the inorganic composite flocculant of 87 ~ 95wt% and the solubility coating be coated on described inorganic composite flocculant of 5 ~ 13wt%, wherein:
Described inorganic composite flocculant is made up of the mixing of 40 ~ 50 mass parts microbe carbon source, 20 ~ 35 mass parts coagulant aidss and 3 ~ 10 mass parts sorbent materials,
Described solubility coating is the substratum being mixed with microbiobacterial agent, the mix bacterium agent that microbiobacterial agent is wherein made up of desulfovibrio microbial inoculum, colorless sulfur bacteria microbial inoculum and gluconobacter sp microbial inoculum, meets in every gram of coating containing total viable count 6 × 10 9~ 1 × 10 11individual, and the viable count of desulfovibrio, colorless sulfur bacteria and gluconobacter sp is than being (1 ~ 1.5): (1 ~ 1.5): 0.5.
2. slow release composite flocculant according to claim 1, is characterized in that described microbe carbon source is the arbitrary proportion mixture of one or more in flyash, peat, glucose.
3. slow release composite flocculant according to claim 2, it is characterized in that being added with ferrous sulfate in described microbe carbon source, add-on is 0.04 ~ 0.2% of microbe carbon source total mass.
4. slow release composite flocculant according to claim 1, is characterized in that described coagulant aids is CaCl 2with one or both the arbitrary proportion mixture in gelatine.
5. slow release composite flocculant according to claim 1, is characterized in that described sorbent material is the arbitrary proportion mixture of one or more in gac, zeolite, coal gangue, shell.
6. slow release composite flocculant according to claim 1, is characterized in that described substratum is the mixed culture medium of one or more in starch, soluble cellulose and extractum carnis substratum.
7. slow release composite flocculant according to claim 1, is characterized in that described solubility coating to be mixed with 1 ~ 4 mass parts microbiobacterial agent by 7 ~ 10 mass parts substratum and forms.
8. microbiobacterial agent according to claim 1, it is characterized in that described colorless sulfur bacteria be thiobacillus ferrooxidant with Acidithiobacillus thiooxidans with (0.2 ~ 1): the mixed bacterium that the ratio of 1 mixes.
9. slow release composite flocculant according to claim 1, is characterized in that described flocculation agent is the spherical of particle diameter 0.5 ~ 3.0mm or almost spherical particle.
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Cited By (3)

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Publication number Priority date Publication date Assignee Title
CN107082497A (en) * 2017-05-22 2017-08-22 浙江阿凡柯达环保科技有限公司 A kind of preparation method and application of polluted water body in-situ reparation sustained release enzyme bacterium mixture
CN107487862A (en) * 2017-07-31 2017-12-19 兰溪市普润斯水产养殖技术有限公司 The preparation method of biological water purification agent
CN108623017A (en) * 2018-05-18 2018-10-09 辽宁工程技术大学 The method that sulfate reducing bacteria cooperates with self-igniting coal gangue processing waste-water from coal mine

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