CN102557211A - Multi-functional composite bioflocculant for wastewater treatment - Google Patents
Multi-functional composite bioflocculant for wastewater treatment Download PDFInfo
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- CN102557211A CN102557211A CN2011104511464A CN201110451146A CN102557211A CN 102557211 A CN102557211 A CN 102557211A CN 2011104511464 A CN2011104511464 A CN 2011104511464A CN 201110451146 A CN201110451146 A CN 201110451146A CN 102557211 A CN102557211 A CN 102557211A
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Abstract
The invention discloses a multi-functional composite bioflocculant for wastewater treatment. The composite bioflocculant is prepared from the following raw materials in percentage by weight: 15 to 30 percent of aluminum polychlorid, 5 to 20 percent of ferrous sulfate, 5 to 20 percent of sodium hydrogen phosphate, 5 to 10 percent of magnesium sulfate, 2 to 5 percent of potassium chloride, 2 to 5 percent of zinc chloride, 1 to 2 percent of calcium carbonate and 50 percent of microbial flocculant. The composite bioflocculant has the characteristics of high-efficiency flocculation, easiness for microbial degradation and environment friendliness, also has certain microbial growth factors, and can be used for the growth and succession of microorganisms in the subsequent biochemical treatment process of wastewater as well as quick and mass propagation in severe environments, accelerate biochemical reaction and improve the treatment effect of biochemical systems.
Description
Technical field
The invention belongs to technical field of waste water processing, be specifically related to a kind of use in waste water treatment multifunctional composite biological flocculation agent.
Background technology
Current environmental pollution is on the rise, and water environment pollution is related to national economy especially.Country also more and more payes attention to the prophylactico-therapeutic measures that water pollutes.Scientist and engineering staff work out various water treatment method in succession.In various sewage disposal technologies, during especially industrial sewage is handled, obtained people's extensive approval as pretreated method with coagulating agent and flocculation agent.At present the most of flocculation agent that uses of China mainly is organic polymer coargulator (like SEPIGEL 305 etc.) and inorganic flocculating agent (like aluminium salt, molysite etc.) two big series products.These two types of flocculation agents have many good qualities, but exist numerous deficiencies.Aluminum salt flocculant is in use if having certain influence to organism too much.PAM (SEPIGEL 305) residue is difficult for by biological degradation, and monomer has intensive neurotoxicity and " three cause " effect (teratogenesis, mutagenesis, carcinogenic), and environment is caused secondary pollution.Given this, it is biological flocculant that people have developed a kind of special flocculation agent, and it is one type of meta-bolites that flocculation activity is arranged by microorganisms, mainly contains gp, polysaccharide, protein, Mierocrystalline cellulose and DNA and thalline of flocculation activity etc. is arranged.Such flocculation agent is to utilize biotechnology, a kind of novel, the water conditioner efficiently that obtain through microbial fermentation, separation and Extraction.Compare with traditional inorganic and organic synthesis polymeric flocculant, biological flocculant has the character and the advantage of many uniquenesses: (1) is easy to solid-liquid separation, and the throw out of formation is few; (2) be prone to be degraded by microorganisms, nontoxic, safe; (3) non-secondary pollution; (4) have turbidity removal and decoloration performance; (5) biological flocculant that has also has and does not receive the pH condition influence, characteristics such as consumption is little.But in use there is certain problem in simple biological flocculant: (1) cost is higher; (2) separation and purification difficult; The trace element that (3) can not provide follow-up biochemical treatment to use; Flexibility is not strong during (4) separately in order to the processing trade effluent.
Seen that known composite flocculation agent is mainly the composite flocculation agent (Huo Yuning etc. that are used for single wastewater treatment; Composite flocculation agent [P] .CN1654348 that is used for treatment of dyeing wastewater); Perhaps carry out modification with inorganic salts and natural accumulation supporting stone; And rectorite leng after the modification and water soluble organic polymer polysaccharide carried out a kind of modification rectorite leng of composite preparation and polysaccharide composite flocculation agent (Ceng Defang etc.; Modification rectorite leng and polysaccharide composite flocculation agent [P] .CN1724401); The someone reported a kind of method of utilizing Protoplast Fusion Technique to prepare microbial flocculant in addition, was mainly used in the preparation (Huang Lan, a kind of method [P] .CN102241437A that utilizes Protoplast Fusion Technique to prepare microbial flocculant) that realizes microbial flocculant fast, cheaply.
And can be efficiently, cheap, adapt to and strong waste water (comprising trade effluent) carried out pre-treatment; The trace element of the normal operation of the biochemical treatment of industrial wastewater system that can provide safeguard again; To shorten the activated sludge acclimatization cycle, make the composite flocculation agent of Industrial Wastewater Treatment steady running, then do not appear in the newspapers.
Summary of the invention
In order to overcome the deficiency of prior art; Order of the present invention is; Provide a kind of can be efficiently, cheap, adapt to and strong waste water (comprising trade effluent) carried out pre-treatment; The trace element of the normal operation of the biochemical treatment of industrial wastewater system that can provide safeguard again to shorten the activated sludge acclimatization cycle, makes the use in waste water treatment multi-function composite flocculation agent of Industrial Wastewater Treatment steady running.
In order to realize above-mentioned task, the present invention adopts following technical solution to be achieved:
A kind of use in waste water treatment multifunctional composite biological flocculation agent is characterized in that, this compound bio flocculation agent that makes is processed by following raw materials by weight percent:
Poly aluminum Chloride (PAC): 15%～30%, ferrous sulfate: 5%～20%, sodium hydrogen phosphate: 5%～20%; Sal epsom: 5%～10%, Repone K 2%～5%, zinc chloride: 2%～5%; Lime carbonate: 1%～2%, microbial flocculant 50%, the summation of raw material is 100%.
Nitrobacter sp. that the film surface pollution flora sifts out in the described microbial flocculant selection submerged membrane bio-reactor and the mixed bacterial of Pseudomonas fluorescens Pseudomonas sp.; In being seeded to general fermention medium; In shaking table 25 ℃～30 ℃, cultivate 2～3 days under 150～170r/min condition after, with fermented liquid centrifugal 20min～30min under 4000r/min～6000r/min condition; Obtain supernatant, be microbial flocculant.
The preparation method of above-mentioned use in waste water treatment multifunctional composite biological flocculation agent; It is characterized in that; Poly aluminum Chloride (PAC), ferrous sulfate, sodium hydrogen phosphate, sal epsom, Repone K, zinc chloride, lime carbonate are ground into fine particle through kibbler, and cross, under normal temperature and pressure conditions, mix by formulation weight per-cent more than or equal to behind 20 mesh sieves; With microbial flocculant behind 1: 1 uniform mixing, promptly make finished product in 50 ℃ of oven dry.
Principle of the present invention is: utilize membrane pollution of membrane bioreactor flora excretory extracellular polymeric to mainly contain compositions such as gp, polysaccharide, protein, Mierocrystalline cellulose and DNA, have high flocculation activity.Add multiple inorganic flocculating agent when flocculation agent prepares simultaneously to guarantee the high efficiency and the popularity of composite flocculation agent, reduced the cost of flocculation agent simultaneously.Therefore, this use in waste water treatment multi-function composite flocculation agent both had efficiently, at a low price, the characteristic of wide spectrum, have nontoxic, eco-friendly characteristics simultaneously again.
This composite flocculation agent is natural polymer and the metals ion compound product that is easy to microorganism growth; Contain the nutritive substance that the trade effluent such as organism, inorganic microelement of multiple promotion microorganism growth very lacks; Soluble in water; Organic and the inorganic multivalence zwitterion that hydrolysis generates is very easily absorbed by mikrobe.In the follow-up biological decontamination process of water body, can effectively improve microorganism active, accelerate the carrying out of biochemical reaction, improve the treatment effect of biochemical system.
Innovative point of the present invention is:
(1) have the characteristics of microbial flocculant and inorganic flocculating agent simultaneously, promptly efficiently, at a low price, wide spectrum, nontoxic, eco-friendly characteristics.
(2) contain the nutritive substance that the trade effluents such as organism, inorganic microelement of multiple promotion microorganism growth very lack, soluble in water, the organic and inorganic multivalence zwitterion that hydrolysis generates is very easily absorbed by mikrobe.In the follow-up biological decontamination process of water body, can effectively improve microorganism active, accelerate the carrying out of biochemical reaction, improve the treatment effect of biochemical system.
(3) inorganic metal salt that contains is except having flocculence and providing the required factor of microorganism growth; Also has certain pH shock absorption, the influence of the unfavourable condition that produces in the time of can avoiding water treatment system to receive foreign impacts (changing and the external conditions variation) like the pH value.
(4) price is relatively cheap, and is widely applicable.Mostly the starting material that adopt are general chemical and organic material, convenient for production, widely applicable.
Through embodiment the present invention is done further detailed description below.
Embodiment
In following embodiment, Poly aluminum Chloride (PAC) (PAC), ferrous sulfate, sodium hydrogen phosphate, sal epsom, Repone K, zinc chloride, lime carbonate are all selected commercially available industrial goods.
Microbial flocculant (enlivens the mixed bacterial of bacterium nitrobacter Nitrobacter sp. and Pseudomonas fluorescens Pseudomonas sp. by film surface pollution flora in the submerged membrane bio-reactor; Part by weight is not limit) efficient flocculant that sifts out produces bacterium in being seeded to general fermention medium; In shaking table 25～30 ℃; After cultivating 2～3 days under 150～170r/min condition; With fermented liquid centrifugal 20～30min under 4000～6000r/min condition, obtain centrifuged supernatant, be microbial flocculant.
Embodiment 1:
By weight percentage, get Poly aluminum Chloride (PAC) (PAC) 15%, ferrous sulfate 15%, sodium hydrogen phosphate 10%; Sal epsom 5%, Repone K 2%, zinc chloride 2%; Lime carbonate 1% is ground into fine particle through kibbler, and crosses more than or equal under normal temperature and pressure conditions, mixing in proportion behind 20 mesh sieves; Then with the microbial flocculant that makes behind 1: 1 uniform mixing, in 50 ℃ of oven dry, make use in waste water treatment multifunctional composite biological flocculation agent finished product.
The mentioned microorganism flocculation agent (enlivens the mixed bacterial of bacterium nitrobacter Nitrobacter sp. and Pseudomonas fluorescens Pseudomonas sp. by film surface pollution flora in the submerged membrane bio-reactor; Account for respectively gross weight 30% and 70%) efficient flocculant that sifts out produces bacterium in being seeded to general fermention medium; In shaking table 25～30 ℃; After cultivating 2～3 days under 150～170r/min condition; With fermented liquid centrifugal 20～30min under 4000～6000r/min condition, obtain centrifuged supernatant, be microbial flocculant.
Above-mentioned use in waste water treatment multifunctional composite biological flocculation agent is used for the water treatment of certain refinery, and the influent quality of this refinery is: COD:1750mg/L, oil in water emulsion: 70mg/L, sulfide: 10mg/L, transmittance 60%.
After the use in waste water treatment multifunctional composite biological flocculation agent of present embodiment is handled (dosage is 50mg/L), effluent quality is: COD:850mg/L, oil in water emulsion 30mg/L, sulfide 10mg/L, transmittance 90%.After operation for some time; Active sludge microorganism is from having only bacterium and Bacillariophyta in the aeration tank; A large amount of protozoons and metazoan disappear, and active sludge microorganism has nematode, campanularian to occur in the aeration tank, occurs Arcella, heliozooid, worms on a sucker and wheel animalcule subsequently in succession.Microorganism active is significantly improved.
Embodiment 2:
By weight percentage, get Poly aluminum Chloride (PAC) (PAC) 15%, ferrous sulfate 20%; Sodium hydrogen phosphate 5%, sal epsom 5%, Repone K 2%; Zinc chloride 2%, lime carbonate 1% is ground into fine particle through kibbler; And cross more than or equal under normal temperature and pressure conditions, mixing in proportion behind 20 mesh sieves, then with microbial flocculant behind 1: 1 uniform mixing, promptly make finished product in 50 ℃ of oven dry.
The mentioned microorganism flocculation agent (enlivens the mixed bacterial of bacterium nitrobacter Nitrobacter sp. and Pseudomonas fluorescens Pseudomonas sp. by film surface pollution flora in the submerged membrane bio-reactor; Account for respectively gross weight 50% and 50%) efficient flocculant that sifts out produces bacterium in being seeded to general fermention medium; In shaking table 25～30 ℃; After cultivating 2～3 days under 150～170r/min condition; With fermented liquid centrifugal 20～30min under 4000～6000r/min condition, obtain centrifuged supernatant, be microbial flocculant.
Above-mentioned use in waste water treatment multifunctional composite biological flocculation agent is used for certain printing and dyeing mill's wastewater treatment, and this printing and dyeing mill's influent waste water water quality is: COD:1000mg/L, BOD
5: 280mg/L, colourity 320 degree.
After the use in waste water treatment multifunctional bio flocculation agent of present embodiment is handled (dosage is a 100mg/L waste water), effluent quality is COD:850mg/L, BOD
5: 340mg/L, colourity 105 degree.Have the raising wastewater biodegradability, remove the ability of colourity.After operation for some time, microorganism active is significantly improved in the biochemical system aeration tank.
Embodiment 3:
By weight percentage, get Poly aluminum Chloride (PAC) (PAC) 30%, ferrous sulfate 5%; Sodium hydrogen phosphate 5%, sal epsom 5%, Repone K 2%; Zinc chloride 2%, lime carbonate 1% is ground into fine particle through kibbler; And cross more than or equal under normal temperature and pressure conditions, mixing in proportion behind 20 mesh sieves, then with microbial flocculant behind 1: 1 uniform mixing, promptly make finished product in 50 ℃ of oven dry.
Microbial flocculant (enlivens the mixed bacterial of bacterium nitrobacter Nitrobacter sp. and Pseudomonas fluorescens Pseudomonas sp. by film surface pollution flora in the submerged membrane bio-reactor; Account for respectively gross weight 70% and 30%) efficient flocculant that sifts out produces bacterium in being seeded to general fermention medium; In shaking table 25 ℃～30 ℃; After cultivating 2～3 days under 150～170r/min condition; With fermented liquid centrifugal 20～30min under 4000～6000r/min condition, obtain centrifuged supernatant, be microbial flocculant.
Above-mentioned use in waste water treatment multifunctional composite biological flocculation agent is used for certain high-turbidity water handles, the turbidity of influent waste water water quality is 100NTU.After the use in waste water treatment multifunctional composite biological flocculation agent of present embodiment is handled (dosage is a 10mg/L waste water), effluent quality is that turbidity is 5NTU.Ability with efficient removal turbidity.
Claims (7)
1. a use in waste water treatment multifunctional composite biological flocculation agent is characterized in that, this compound bio flocculation agent that makes is processed by following raw materials by weight percent:
Poly aluminum Chloride (PAC): 15%～30%, ferrous sulfate: 5%～20%, sodium hydrogen phosphate: 5%～20%; Sal epsom: 5%～10%, Repone K 2%～5%, zinc chloride: 2%～5%; Lime carbonate: 1%～2%, microbial flocculant 50%, the summation of raw material is 100%.
2. use in waste water treatment multifunctional composite biological flocculation agent as claimed in claim 1 is characterized in that, this compound bio flocculation agent that makes is processed by following raw materials by weight percent:
Poly aluminum Chloride (PAC): 15%, ferrous sulfate: 15%, sodium hydrogen phosphate: 10%, sal epsom: 5%, Repone K 2%, zinc chloride: 2%, lime carbonate: 1%, microbial flocculant 50%.
3. use in waste water treatment multifunctional composite biological flocculation agent as claimed in claim 1 is characterized in that, this compound bio flocculation agent that makes is processed by following raw materials by weight percent:
Poly aluminum Chloride (PAC): 15%, ferrous sulfate: 20%, sodium hydrogen phosphate: 5%, sal epsom: 5%, Repone K 2%, zinc chloride: 1%, lime carbonate: 2%, microbial flocculant 50%.
4. use in waste water treatment multifunctional composite biological flocculation agent as claimed in claim 1 is characterized in that, this compound bio flocculation agent that makes is processed by following raw materials by weight percent:
Poly aluminum Chloride (PAC): 30%, ferrous sulfate: 5%, sodium hydrogen phosphate: 5%, sal epsom: 5%, Repone K: 2%, zinc chloride: 2%, lime carbonate 1%, microbial flocculant 50%.
5. like one of them described use in waste water treatment multifunctional composite biological flocculation agent of claim 1 to 4; It is characterized in that; Described microbial flocculant is selected the mixed bacterial that enlivens bacterium nitrobacter Nitrobacter sp. and Pseudomonas fluorescens Pseudomonas sp. that the film surface pollution flora sifts out in the submerged membrane bio-reactor, in being seeded to general fermention medium, and in shaking table 25 ℃～30 ℃; After cultivating 2～3 days under 150～170r/min condition; With fermented liquid centrifugal 20min～30min under 4000r/min～6000r/min condition, obtain supernatant, be microbial flocculant.
6. like the preparation method of one of them described use in waste water treatment multifunctional composite biological flocculation agent of claim 1 to 4; It is characterized in that; Poly aluminum Chloride (PAC), ferrous sulfate, sodium hydrogen phosphate, sal epsom, Repone K, zinc chloride, lime carbonate are ground into fine particle through kibbler, and cross, under normal temperature and pressure conditions, mix by formulation weight per-cent more than or equal to behind 20 mesh sieves; With microbial flocculant behind 1: 1 uniform mixing, promptly make finished product in 50 ℃ of oven dry.
7. method as claimed in claim 6; It is characterized in that; Described microbial flocculant is selected the film surface pollution flora sifts out in the submerged membrane bio-reactor Nitrobacter sp. and the mixed bacterial of Pseudomonas fluorescens Pseudomonas sp., in being seeded to general fermention medium, and in shaking table 25 ℃～30 ℃; After cultivating 2～3 days under 150～170r/min condition; With fermented liquid centrifugal 20min～30min under 4000r/min～6000r/min condition, obtain supernatant, be microbial flocculant.
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Cited By (4)
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| CN104803545A (en) * | 2015-01-09 | 2015-07-29 | 河北德龙环境工程股份有限公司 | Water-based paint production wastewater suspension destabilizing agent and application method thereof |
| CN107265666A (en) * | 2017-08-08 | 2017-10-20 | 苏州吉利不锈钢制品有限公司 | A kind of stainless steel production wastewater biological flocculant and preparation method thereof |
| CN107381743A (en) * | 2017-08-08 | 2017-11-24 | 苏州吉利不锈钢制品有限公司 | A kind of stainless steel produces waste water flocculant |
| CN110692650A (en) * | 2018-10-31 | 2020-01-17 | 大明产业株式会社 | Composition for preventing or removing occurrence of cyanobacteria and method for removing cyanobacteria using the same |
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Patent Citations (3)
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Non-Patent Citations (1)
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104803545A (en) * | 2015-01-09 | 2015-07-29 | 河北德龙环境工程股份有限公司 | Water-based paint production wastewater suspension destabilizing agent and application method thereof |
| CN104803545B (en) * | 2015-01-09 | 2016-11-23 | 河北德龙环境工程股份有限公司 | The using method of Water paint production wastewater suspended substance coagulant |
| CN107265666A (en) * | 2017-08-08 | 2017-10-20 | 苏州吉利不锈钢制品有限公司 | A kind of stainless steel production wastewater biological flocculant and preparation method thereof |
| CN107381743A (en) * | 2017-08-08 | 2017-11-24 | 苏州吉利不锈钢制品有限公司 | A kind of stainless steel produces waste water flocculant |
| CN110692650A (en) * | 2018-10-31 | 2020-01-17 | 大明产业株式会社 | Composition for preventing or removing occurrence of cyanobacteria and method for removing cyanobacteria using the same |
| CN110692650B (en) * | 2018-10-31 | 2022-03-29 | 大明产业株式会社 | Composition for preventing or removing occurrence of cyanobacteria and method for removing cyanobacteria using the same |
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