CN1180994C - Method for increasing waste water treating efficiency by improving activity of sulfate reducing bacteria - Google Patents
Method for increasing waste water treating efficiency by improving activity of sulfate reducing bacteria Download PDFInfo
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- CN1180994C CN1180994C CNB031297595A CN03129759A CN1180994C CN 1180994 C CN1180994 C CN 1180994C CN B031297595 A CNB031297595 A CN B031297595A CN 03129759 A CN03129759 A CN 03129759A CN 1180994 C CN1180994 C CN 1180994C
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- waste water
- reducing bacteria
- sulfate reducing
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- water treating
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- Micro-Organisms Or Cultivation Processes Thereof (AREA)
Abstract
The present invention discloses a method for raising waste water treating efficiency by strengthening the activity of sulfate reducing bacteria, which belongs to the technology of waste water treating with the sulfate reducing bacteria. An upstream anaerobic composite bed bioreactor is adopted. In the method, the acid wastewater which comprises heavy metal ions, such as Cr2O7<2->, CrO4<2->, Cu<2+>, Zn<2+>, Mn<2+>, etc. is processed with the mixing strains of the sulfate reducing bacteria to strengthen the activity of the sulfate reducing bacteria and the efficiency of the waste water treating is raised. The present invention is characterized in that at a temperature between 25 and 30 DEG C, simple substance irons are added to a reactor or a waste water groove or tanks to carry out biochemical reaction until the pH value of the waste water is between 5.5 and 8.5. The present invention has the advantages that the pH value of the waste water is raised and the bacterial living environment is improved by adding simple substance irons; thereby, the activity of bacterial metabolic is kept excellent, the capability of restoring the sulfate ion to sulfide ion with the sulfate reducing bacteria is strengthened and the adaptability of the bacteria and the waste water treating efficiency are raised.
Description
Technical field
The present invention relates to the method that a kind of activity that strengthens sulphate reducing bacteria improves waste water treatment efficiency.Belong to and utilize sulphate reducing bacteria to handle waste water technology.
Background technology
Acid waste water is modal a kind of in the trade effluent, and it is mainly from mine (draining), plating, electrolysis, dyestuff and pharmaceutical industry etc.Its principal character shows as: low pH value, contain high density vitriol, contain the heavy metal ion of solubility.The acid waste water that contains heavy metal is very harmful to environment, industrial and agricultural production and human beings'health, must handle.Handle this type of waste water at present and mainly use lime neutralisation and wetland method, the lime neutralisation can produce a large amount of solid waste (gypsum and heavy metal hydroxide) in treating processes, need secondary treatment, otherwise will cause secondary pollution, so increased difficulty and the cost handled.Wetland method floor space is big, is restricted in actual applications.
Utilize the physiological property of nature sulphur cycle principle and sulphate reducing bacteria, handling acid heavy metal waste water with microbial method is a kind of emerging technology.Sulphate reducing bacteria is one group of general designation of carrying out the relevant bacterium of sulfate reduction metabolic reaction, at present, existing 12 of the bacterial classification of the sulphate reducing bacteria that research obtains belongs to nearly more than 40 kinds, comprising Desulfovibrio, Desulfomonas, Desulfotomaculum, Desulfococcus, Desulfobacter, Desulfonema etc., what be used for wastewater treatment mainly contains Desulfovibrio, Desulfomonas and Desulfotomculum.So their unique distinction is in unique microorganism that can carry out anaerobic respiration with sulfate radical as final electron acceptor(EA).This bacterium utilizes organism as electron donor, by under anaerobic the required energy of existence being obtained in organic degraded, simultaneously sulfate radical is reduced to sulfonium ion and elemental sulfur.In this course, the pH value of waste water obtains improving, and sulfate concentration descends, and the sulfonium ion of heavy metal ion and generation forms the metallic sulfide precipitation and removed, and waste water quality improves.This technology is compared with existing treatment process to have and is removed heavy metal ion efficient height, generates that sludge quantity is few, precipitation is difficult for the secondary dissolving and characteristics such as adaptability is strong, has higher using value in practice.But the metabolic activity of sulphate reducing bacteria is subjected to the limitations affect of multiple factor, as organic carbon source concentration, sulfate concentration, temperature, waste water ph and heavy metal ion kind and concentration etc., so in the actual waste water treating processes, may cause it actively to reduce even be suppressed owing to the growth that waste water condition (low pH value, contain heavy metal ion) or operational condition (normal temperature is operation down) are not suitable for bacterium, thereby make the waste water treatment efficiency reduction.
Summary of the invention
The object of the present invention is to provide a kind of activity that strengthens sulphate reducing bacteria to improve the method for waste water treatment efficiency.This method has strengthened the activity of sulphate reducing bacteria effectively, has improved the processing efficiency of waste water, and process is simple, applied range.
For achieving the above object, the present invention is realized by following technical proposals.Adopt upflow type anaerobic multiple-hearth bio-reactor, utilize the sulphate reducing bacteria mixed strains, handle and contain Cr
2O
7 2-, CrO
4 2-, Cu
2+, Zn
2+, Mn
2+The acid waste water process of heavy metal ion,, it is characterized in that, in reactor or in the wastewater trough, add fe, add-on causes the pH value of sewage to reach 5.5～8.5, and carries out the sulfate reduction metabolic reaction at 25～30 ℃ of sulphate reducing bacteria mixed strainss.
Above-mentioned fe is iron powder, iron filings, iron sand.
The invention has the advantages that, in the system of utilizing sulphate reducing bacteria processing acid heavy metal waste water, by adding fe, can improve the pH value of waste water, improve the living environment of bacterium, nutraceutical matrixes such as iron ion and hydrogen are provided for bacterium simultaneously, thereby can make bacterium can keep good metabolic activity, shorten the cell cessation of growth cessation phase, strengthen sulphate reducing bacteria sulfate radical is reduced to the ability of sulfonium ion, improve bacterial adaptation and waste water treatment efficiency.
Embodiment
The present invention has carried out utilizing fe to strengthen the research of sulfate reducing bacteria activity, and its conclusion can be widely used in utilizing the various field of waste water treatment of sulphate reducing bacteria method, as same for treating acidic mine wastewater, electroplating wastewater, leather-making waste water etc.When using this technology, conditions such as treatment capacity that reaches according to composition, character, pH value and the requirement of treatment sewage and treatment effect are earlier determined the add-on of fe; Load carrier filler then, seed sludge; After treating microorganism colonization, earlier iron powder is added in the reactor, with peristaltic pump sewage is sent into reactor again and handle.In continuous treating processes, should regularly add iron powder according to wastewater treatment capacity, to keep the activity of sulphate reducing bacteria.
This research is adopted is mixed sulfate reduction bacterium bacterial classification based on Desulfovibrio (desulfovibrio), and processing is by Cr
6+, Cu
2+, Zn
2+, Mn
2+The mixture-metal ion waste water of forming, metal ion proportion of composing Cr
6+: Cu
2+: Zn
2+: Mn
2+Be 1: 4: 3: 2, the metal ion total concn is 30ppm, in addition, contains the sulfate ion that concentration is 3000ppm in the waste water, waste water ph is 5.0～5.5.Adopt the upflow type anaerobic multiple-hearth bio-reactor of band adjustment type triphase separator, useful volume is 5L.Load filler (the hypomere cylindrical shell is a multiporous fiber ball floating stuffing, and the epimere cylindrical shell is a fixedly filler of haydite) at first as requested, seed sludge guarantees anaerobism, sealing in the whole reactor.Treat microorganism after filling surface growth, biofilm, the peristaltic pump of using adjustable throttle speed is with the waste water injecting reactor.Finish the unloading phase for the treatment of, after system reaches and stablizes, the maintenance hydraulic detention time is 12h, temperature of reactor is maintained at 25～30 ℃, and in reactor, add fe and (use iron powder in the present embodiment, granularity 80 orders, consumption are 60mg/L sewage), final water treatment effect is: the wastewater treatment ability is 83L/h.m
3Water outlet pH value is 7.5～7.6; The water outlet sulfate concentration is less than 100ppm, and the sulfate radical clearance is not less than 96.7%; Concentration of heavy metal ion Cu in the water outlet
2+＜1.0ppm, Zn
2+＜4.0ppm, Mn
2+＜2.0ppm, Cr
6+＜0.5ppm, reach the national standard of discharge of wastewater.
By this method, can realize the microbiological treatment of normal temperature, low pH value waste water, embodiment is easy, and cost is low, can effectively improve waste water treatment efficiency, has stronger adaptability and Application Areas widely than current methods.
Claims (2)
1. an activity that strengthens sulphate reducing bacteria improves the method for waste water treatment efficiency, and this method adopts upflow type anaerobic multiple-hearth bio-reactor, utilizes the sulphate reducing bacteria mixed strains, handles and contains Cr
2O
7 2-, CrO
4 2-, Cu
2+, Zn
2+, Mn
2+The acid waste water process of heavy metal ion, it is characterized in that: in reactor or in the wastewater trough, add fe, add-on causes the pH value of sewage to reach 5.5～8.5, and carries out the sulfate reduction metabolic reaction at 25～30 ℃ of sulphate reducing bacteria mixed strainss.
2. improve the method for waste water treatment efficiency by the activity of the described enhancing sulphate reducing bacteria of claim 1, it is characterized in that: the fe of adding is iron powder, iron filings, iron sand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031297595A CN1180994C (en) | 2003-05-16 | 2003-05-16 | Method for increasing waste water treating efficiency by improving activity of sulfate reducing bacteria |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031297595A CN1180994C (en) | 2003-05-16 | 2003-05-16 | Method for increasing waste water treating efficiency by improving activity of sulfate reducing bacteria |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1458083A CN1458083A (en) | 2003-11-26 |
| CN1180994C true CN1180994C (en) | 2004-12-22 |
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|---|---|---|---|
| CNB031297595A Expired - Fee Related CN1180994C (en) | 2003-05-16 | 2003-05-16 | Method for increasing waste water treating efficiency by improving activity of sulfate reducing bacteria |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106565012A (en) * | 2016-10-09 | 2017-04-19 | 辽宁工程技术大学 | Method for processing coal mine acid wastewater through sulfate reducing bacteria and spontaneous combustion coal gangue in synergetic manner |
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| CN100400427C (en) * | 2006-01-24 | 2008-07-09 | 兰州大学 | Process of treating and utilizing acid waste water containing heavy metal |
| CN100425551C (en) * | 2006-09-29 | 2008-10-15 | 合肥工业大学 | Mining area acid water treating process in the source |
| CN101195859B (en) * | 2006-12-05 | 2010-12-08 | 中国科学院过程工程研究所 | Technique for processing low concentration heavy metal sulfate liquor with microorganism method |
| CN101434916B (en) * | 2007-11-13 | 2010-09-29 | 北京有色金属研究总院 | A strain of sulfate reduction bacteria and process for treating acidic mine wastewater by using the same |
| CN103562146A (en) * | 2011-06-10 | 2014-02-05 | 孟加拉邦科技大学 | Self-sustained microbial detoxification of soluble sulfate from environmental effluent |
| CN103102012B (en) * | 2011-11-10 | 2015-05-13 | 中国石油化工股份有限公司 | Anaerobic biochemistry treatment method for cellulose ethanol wastewater |
| CN103193316B (en) * | 2013-04-15 | 2014-09-10 | 北京工业大学 | Method for biologically treating cadmium-containing wastewater |
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| CN103739065A (en) * | 2013-12-04 | 2014-04-23 | 吉林省电力科学研究院有限公司 | Anaerobic biological treatment method of heat-engine plant desulphurization waste water |
| CN104944575B (en) * | 2015-05-29 | 2017-03-22 | 江汉大学 | Biological treatment method of acidic sulfate wastewater containing Fe3+ and Cu2+ |
| CN106115931B (en) * | 2016-06-29 | 2019-06-18 | 华南理工大学 | The method that sponge iron cooperates with removing sulfate and Cd (II) waste water with microorganism |
| CN106396124B (en) * | 2016-06-29 | 2019-06-18 | 华南理工大学 | The method that sponge iron cooperates with removing sulfate and Cu (II) waste water with microorganism |
| CN106115932B (en) * | 2016-06-29 | 2019-06-18 | 华南理工大学 | The method that sponge iron cooperates with removing sulfate and Cr (VI) waste water with microorganism |
| CN111362419A (en) * | 2018-12-26 | 2020-07-03 | 有研工程技术研究院有限公司 | Biochemical treatment system for mine acidic wastewater |
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| CN112777888B (en) * | 2020-12-24 | 2022-04-19 | 南京农业大学 | Treatment method for removing and recycling heavy metals in wastewater sludge based on biological sulfur circulation |
| CN112777874A (en) * | 2021-01-20 | 2021-05-11 | 喻婕 | Method for treating acidic wastewater containing heavy metals |
| CN114315045A (en) * | 2021-12-13 | 2022-04-12 | 苏沃特环境(江苏)有限公司 | Treatment system and treatment method for sulfate wastewater |
| CN116721791A (en) * | 2023-04-28 | 2023-09-08 | 核工业北京化工冶金研究院 | Treatment method of radioactive acidic heavy metal wastewater |
| CN117509977A (en) * | 2023-12-13 | 2024-02-06 | 广州中环万代环境工程有限公司 | Wastewater pretreatment equipment and treatment method thereof |
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2003
- 2003-05-16 CN CNB031297595A patent/CN1180994C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106565012A (en) * | 2016-10-09 | 2017-04-19 | 辽宁工程技术大学 | Method for processing coal mine acid wastewater through sulfate reducing bacteria and spontaneous combustion coal gangue in synergetic manner |
| CN106565012B (en) * | 2016-10-09 | 2019-04-02 | 辽宁工程技术大学 | The method that sulfate reducing bacteria cooperates with self-igniting coal gangue processing Acidic Waste Water from Coal Mines |
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| CN1458083A (en) | 2003-11-26 |
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