CN1127225A - Biological treating method for micro quantity organic pollutant in water source - Google Patents
Biological treating method for micro quantity organic pollutant in water source Download PDFInfo
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- CN1127225A CN1127225A CN 95110327 CN95110327A CN1127225A CN 1127225 A CN1127225 A CN 1127225A CN 95110327 CN95110327 CN 95110327 CN 95110327 A CN95110327 A CN 95110327A CN 1127225 A CN1127225 A CN 1127225A
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Abstract
The present invention relates to a method putting an organic carbon source into water, which is harmless, non-toxic and easily utilized by microbe, i.e. using a microbial metabolic organic substance to remove micro organic pollutant from water of water source. In particular, it has the high removal effect for removing the organic pollutants of micro oil, phenol, toluene, paraxylene and styrene, etc. from underground water, and its removal efficiency can be up to above 95%. The invented product is simple in production process and can be used for treating contaminative industrial water.
Description
The present invention relates to the biopurification treatment technology of organic pollutant in a kind of water, be particularly suitable for the biological treatment of micro quantity organic pollutant in the source water.
Often contain organic pollutant in the source water,, will cause the microbial growth breeding, cause the burn into fouling and the obstruction of pipeline and watering equipment, damage production unit, influence ordinary production, and cause productive expense to increase industrial process waters.Have organic pollutant in the domestic water, have big toxicity and stronger carcinogenic, teratogenesis and mutagenesis, long-term drinking can cause very big harm to HUMAN HEALTH.Adopt traditional water treatment method to handle to the source water that is subjected to Organic pollutants, abroad the organic pollutant in the tap water is adopted activated carbon adsorption, ozone oxidation, ozone and activated carbon coupling and bioactive carbon even depth treatment technology, all to control drinking water pollution and increase water quality and brought into play better effect, but these treatment technologies all have its limitation.Ground of China some areas and underground water are subjected to pollution in various degree, because economy is still undeveloped, are difficult to imitate external advanced treatment technology.Many investigators have adopted according to actual state has increased Chemical Pretreatment, biologic pretreatment method such as Shanghai company of the Running-water Company Biological Pretreatment to Huangpu river in the conventional processes front, adopt vertical wave-III type filtrate to be the filter of filler biological tower, it is that filler is handled polluted water with the oyster shell that Cai Hui very waits the person, receive certain effect, but organism in the water and mutagenesis activity are not carried out systematic study.Tsing-Hua University has obtained certain practical result to " research of Biological Pretreatment in drinking water treatment ", but does not apply as yet.Adopt existing ripe research of biomembrance process Treating Municipal Sewage and trade effluent and experience, the CN1012360B patented technology is exactly an example.And, experiment and practice are not arranged as yet at home for adopting bioremediation directly to handle organic pollutant in the source water.
The purpose of this invention is to provide a kind of microbial metabolism organism of using, remove the method for the micro quantity organic pollutant in the source water, make source water reach drinking water standard, and have simple, the economic advantage of technology.
Design philosophy of the present invention is to utilize microorganism when utilizing some organism to keep Biostatic as main nutrition to handle, can assist and utilize some organic pollutants and the characteristic of metabolic degradation in addition, employing is to the source water of poor nutritional status, particularly add harmless in the underground water, and can keep the needed organism of biological growth, be that organic carbon source is as main matrix, to keep the minimum concentration of stable state biological treatment.Meanwhile, can reach the purpose of removing the water source underwater micro-organic matter fully with the source water micro quantity organic pollutant as auxiliary matrix and complete oxidation decomposes again.
The present invention adopts the fixed type biological embrane method, adds nontoxicly, harmless continuously or discontinuously in source water, and is easy to the organic carbon source of biological utilisation, is the best with acetate or glucose.
Biofilm reactor size that the present invention adopts and packed height according to water quality design decide, the interior employing of reactor is nontoxic, harmless, porous light, scleroid haydites of book structure are filler.For prevent in the process of the test pipeline, the device to organic absorption, the material of testing apparatus all adopts inorganic materials, as glass or polytetrafluoroethylmaterial material, the main matrix of biofilm reactor, pollutent and water yield size are all controlled by volume pump.Biofilm reactor test parameter table:
| Sequence number | The residence time (min) | Main matrix concentration (mg-C/l) | Packed height (cm) | Filler sizes (mm) | Reactor size (mm) |
| ????1 | ????30 | ????0.5 | ????100 | ????2～5 | ????100 |
| ????2 | ????15 | ????2.0 | ????100 | ????2～5 | ????100 |
The filler haydite is a raw material with natural shale, and through the light porous aggregate that high-temperature melting expands and forms, its quality is hard.Filler does not contain human body harmful's heavy metal or other objectionable impurities, its unit weight 720kg/m
3, overall porosity is 75.6%, wherein percentage of open area is 47.2%, specific surface area 3.99m
2/ g, the surface has a lot of irregular holes to be beneficial to microorganism set growth.
Also can whether adopt the aeration measure according to water quality and the decision of water temperature situation.
Organic contamination substrate concentration in the test water is respectively:
| Oil mg/l | Phenol μ g/l | Benzene μ g/l | Toluene μ g/l | Dimethylbenzene μ g/l | Vinylbenzene μ g/l | Main matrix concentration mg-C/l |
| ?0.3～0.5 | ?50～5 | ?50～2 | ?50～2 | ?50～2 | ?50～2 | ?0.5～2 |
The Pollutant levels size is decided with the actual concentrations reference design.
Water quality reaches state-set standard after treatment.
Further specify the present invention in conjunction with the accompanying drawings:
Accompanying drawing 1 is the biological treatment device synoptic diagram
Wherein: 1,2-biofilm reactor, 3-pollutent storage tank
4-main matrix storage tank, 5-mixing water storage tank
6-source water
Be subjected to the source water (6) of Organic Pollution and the certain density main matrix in the main matrix storage tank (4), enter mixing water storage tank (5) after interior abundant the mixing by pipeline, enter biofilm reactor (1), (2) top by water pump lifting, current from top to bottom, to stream, the ceramics filling of water in reactor (1), (2) arrives the lower end water outlet under adopting. Pollutant storage tank (3) water distribution is used.
Good effect:
Field experiment proves, that uses that biological treatment of the present invention processes contains the micro-content organism source water, particularly oil-containing and organic underground water have all reached the water standard of country about drinking water, have satisfied people fully and have guaranteed healthy requirement, have reached good effect.
The present invention has preferably assistant degradation effect to organic pollutions such as the micro oil in the underground source water, phenol, toluene, dimethylbenzene and styrene, and very high removing effect is arranged, and clearance reaches more than 90%. Also greatly reduce have carcinogenic, teratogenesis, poisonous, the noxious pollutant of mutagenesis, and do not produce new poisonous, harmful side product, do not produce secondary pollution. Can make the prominent activity of causing of underground water change feminine gender into by positive (5 liters/ware). The present invention also has technique, simple to operate, and the advantage of reducing investment outlay also can be used for processing the industrial water purification that is subjected to Organic Pollution.
Embodiment:
Use method of the present invention, with cultured bacterial classification, place in the biofilm reactor, adopting nontoxic, harmless, porous light, scleroid haydites of book structure is filler, reactor filler height limit 40～100cm, filler sizes 2～5mm, test materials select nontoxic inorganic materials such as glass or tetrafluoroethylene for use, and main matrix, pollutent and water yield water are all controlled by volume pump, all testing apparatuss adopt lucifuge to handle, and prevent photosynthetic bacterium growth.Testing apparatus is selected the device of accompanying drawing 1 for use, and wherein main matrix storage tank (4) fills the main matrix water distribution, and mixing water storage tank (5) fills by the water after the mixing of main matrix storage tank (4) and pollutent storage tank (3).Usually biofilm reactor is kept biological growth by the main matrix water distribution.When carrying out contaminant degradation then by the water distribution of mixing water storage tank.Selecting sodium-acetate for use is the main matrix that keeps biological growth, nontoxic, harmless and be beneficial to, and biological utilisation is safe and harmless to human body.Adding finite concentration matrix by certain hour in water is cell synthetic (carbon source), is guaranteeing the metabolic while of microorganism growth, the micro quantity organic pollutant in the water can be utilized as auxiliary matrix and by biological degradation.When hydraulic detention time is 15 minutes, main matrix concentration is 0.5mg～c/l, after biological treatment reaches stable state, oil, phenol, benzene, dimethylbenzene, vinylbenzene are reduced to the level that can't check in the water outlet by 0.3mg/l, 10 μ g/l, 10.0,10.0, the 10.0 μ g/l of water inlet respectively, and clearance is greater than more than 95%.When hydraulic detention time in 15～60 minutes scopes, long more Pyrogentisinic Acid's of the residence time degradation rate is fast more.
Carry out back flushing and can not cause that treatment effect descends behind bioreactor device operation certain hour, pollutent is interrupted time of occurrence did not influence treatment effect in 10 hours.The hazardous contaminant of " three cause " effect all is reduced to drinking water standard in the water, and to guarantee people's health, the present invention handles back water and do not produce new poisonous and harmful by product, non-secondary pollution, and the prominent activity that causes of water transfers feminine gender to by the positive.
Claims (2)
1. the bioremediation of micro quantity organic pollutant in the source water adopts the fixed type biological embrane method, and it is characterized in that continuously or in water, add nontoxic, harmless and organic carbon source that be easy to biological utilisation discontinuously, be the best with acetate or glucose.
According to claim 1 the bioremediation of micro quantity organic pollutant in the fast source water, it is characterized in that it is filler that filler in the biofilm reactor adopts nontoxic, harmless, porous light, scleroid haydites of book structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95110327 CN1127225A (en) | 1995-01-17 | 1995-01-17 | Biological treating method for micro quantity organic pollutant in water source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95110327 CN1127225A (en) | 1995-01-17 | 1995-01-17 | Biological treating method for micro quantity organic pollutant in water source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1127225A true CN1127225A (en) | 1996-07-24 |
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ID=5077726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95110327 Pending CN1127225A (en) | 1995-01-17 | 1995-01-17 | Biological treating method for micro quantity organic pollutant in water source |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101891301A (en) * | 2010-04-23 | 2010-11-24 | 中国地质大学（武汉） | Application of facultative anaerobic benzene compounds-degrading bacterium |
| CN102701442A (en) * | 2012-05-22 | 2012-10-03 | 青岛理工大学 | Quick start method of source water biological denitrification system |
-
1995
- 1995-01-17 CN CN 95110327 patent/CN1127225A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101891301A (en) * | 2010-04-23 | 2010-11-24 | 中国地质大学（武汉） | Application of facultative anaerobic benzene compounds-degrading bacterium |
| CN102701442A (en) * | 2012-05-22 | 2012-10-03 | 青岛理工大学 | Quick start method of source water biological denitrification system |
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