CN1765772A - Disposal method of nitrobenzene removal from water - Google Patents
Disposal method of nitrobenzene removal from water Download PDFInfo
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- CN1765772A CN1765772A CN 200510094222 CN200510094222A CN1765772A CN 1765772 A CN1765772 A CN 1765772A CN 200510094222 CN200510094222 CN 200510094222 CN 200510094222 A CN200510094222 A CN 200510094222A CN 1765772 A CN1765772 A CN 1765772A
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- mirbane
- oil
- water
- organic
- acidifying
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Abstract
The invention discloses a two-stage bio-treatment method for nitrobenzene in water, which comprises: acid decompositing the nitrobenzene with organic material in sewage or by adding, reducing it into aniline by microbe that is easy to degrade by aerobe. This method overcomes the problems in known art, such as, hard to degrade and easy to lead secondary pollution, and has wide application.
Description
Technical field
The present invention relates to the biological removal technology and the method for oil of mirbane in water and the waste water, a kind of specifically treatment process of removing oil of mirbane in the water.
Background technology
Oil of mirbane can be widely used in makes dyestuff, paint, spices, medicine, aniline and derivative thereof etc.Along with the production and the application of oil of mirbane, the handling problem that must bring nitrobenzene-containing waste water.For the existing multiple treatment process of the waste water of nitrobenzene-containing, with regard to its economy, biological treatment is a kind of mode preferably, removes but present traditional bio-aeration processing mode that adopts is difficult to accomplish the degraded to oil of mirbane in the water.It is generally acknowledged that oil of mirbane is a kind of material that is difficult to biochemical degradation, therefore, adopt aerobic biochemical to handle and directly from water, remove oil of mirbane, difficulty relatively, general clearance be less than 70%, and exist partial nitro benzene to overflow from water with long-time aeration effect to cause the sequel of secondary pollution.The waste water of nitrobenzene-containing often adopts that the actual situation that causes dilution discharge does not accomplish to remove oil of mirbane on total amount with the mode of other waste water combination treatment, can cause substantial pollution to environment.
Summary of the invention
The object of the present invention is to provide a kind of with adopting biological degradation to remove oil of mirbane in the water, can avoid simultaneously or reduce oil of mirbane causes secondary pollution to atmosphere treatment process technology greatly.
For achieving the above object, the technology of the present invention treating processes is made of biological acidification redox process.Promptly utilize the acidified degradation effect of organic substance in the anaerobic biological environment of existing organic substance in the sewage or interpolation earlier, make the oil of mirbane generation reductive action in the water be transformed into aniline, and then the effect by aerobic microbiological is removed aniline oxidative degradation in aerobic environment, thereby reach the purpose of removing oil of mirbane in the water.
Technical scheme
A kind of treatment process of removing oil of mirbane in the water, may further comprise the steps: (1), acidifying are decomposed: be to utilize in the water existing organic substance or add organic substance in sewage, under the anaerobic biological environment, impel organic substance acidifying decomposition in the water, and make oil of mirbane generation reductive action be transformed into aniline; (2), aerobic biochemical is handled: the effect by aerobic microbiological in aerobic environment is removed aniline oxidative degradation, thereby realizes removing the purpose of oil of mirbane in the sewage.
The treatment process of oil of mirbane in the described removal water, it is characterized in that handled nitrobenzene-containing COD of sewage cr: the concentration ratio of oil of mirbane is 4～24, the removal nitro phenenyl concentration is 0～250mg/L, when organic concentration in the sewage is low, can adopt the organic mode of interpolation to improve organic concentration.
The treatment process of oil of mirbane in the described removal water is characterized in that the organic substance that is added is that the oxygen-bearing organic matter that acidifying is decomposed takes place easily, refers to: starch, sucrose, glucose, vinasse waste liquid, organic waste water etc. under anaerobic environment and action of microorganisms.
The treatment process of oil of mirbane in the described removal water, it is characterized in that the acidifying decomposition course is under the anaerobic biological environment, adopting sealing is complete anaerobic reation pool or semitight reaction tank form, Xiang Shuizhong adds general active sludge or acidifying bacterial classification, liquid is following stirs, handled hydraulic detention time 2～24 hours, reaction tank pH value is controlled to be 3～6.
The treatment process of oil of mirbane in the described removal water, it is characterized in that the aerobic biochemical treating processes is the aeration treating processes of activated sludge process or contact oxidation method, sludge concentration 2～5g/L handles hydraulic detention time and was generally 6～24 hours, and reaction tank pH value is controlled to be 6～8.
Advantage of the present invention:
(1) makes the oil of mirbane of bio-refractory change into the aniline of readily biodegradable by the biological reducing effect, can effectively remove oil of mirbane in the water.
(2) can avoid and reduce the secondary pollution that oil of mirbane is overflowed atmospheric environment is caused because of the aeration effect in the water.
(3) treatment unit that adopts the present invention to build, technical process is simple, and convenient operation and management is removed stabilised efficiency, reliable.
Description of drawings
Fig. 1 is a process flow diagram of the present invention
Embodiment
Below by example content of the present invention is described further.Referring to accompanying drawing 1.
Embodiment 1: adopt sewage disposal testing apparatus of the present invention
The oil of mirbane sewage of human configuration, nitrobenzene are 249mg/L, and the interpolation organism is a glucose, and anaerobic biological acidifying was handled 24 hours, and pH is 3～6, and the oil of mirbane Restore All is transformed into aniline.This waste water was handled 9 hours through aerobic biochemical again, and pH is 7～8, treat effluent CODcr＜100mg/L, oil of mirbane and aniline concentration＜0.05mg/L.
Embodiment 2: adopt 1500 ton per day wastewater treatment equipments of the present invention
The nitrobenzene-containing waste water that medicine production produces, CODcr and nitro phenenyl concentration are respectively 620～840mg/L and 24～35mg/L, do not add organic substance, and anaerobic acidification was handled 8 hours, treat effluent oil of mirbane 1.1～1.4mg/L, clearance is greater than 95%.This waste water with handle treat effluent CODcr＜100mg/L, nitrobenzene content＜0.05mg/L after other waste water mix again through follow-up aerobic biochemical.To this type of waste water, suggestion is handled after adding a small amount of organic substance.
Claims (5)
1, a kind of treatment process of removing oil of mirbane in the water, may further comprise the steps: (1), acidifying are decomposed: be to utilize in the water existing organic substance or add organic substance in sewage, the organic substance acidifying is decomposed, impel simultaneously that oil of mirbane generation reductive action is transformed into aniline in the water; (2), aerobic biochemical is handled: the effect by aerobic microbiological in aerobic environment is removed aniline oxidative degradation, thereby realizes removing the purpose of oil of mirbane in the sewage.
2, the treatment process of oil of mirbane in the removal water according to claim 1, it is characterized in that handled nitrobenzene-containing COD of sewage cr: the concentration ratio of oil of mirbane is 4～24, nitro phenenyl concentration is 0～250mg/L, when organic concentration in the sewage is low, can adopt the organic mode of interpolation to improve organic concentration.
3, the treatment process of oil of mirbane in the removal water according to claim 1 and 2, it is characterized in that the organic substance that is added is that the oxygen-bearing organic matter that acidifying is decomposed takes place easily, refers to: starch, sucrose, glucose, vinasse waste liquid, organic waste water etc. under anaerobic environment and action of microorganisms.
4, the treatment process of oil of mirbane in the removal water according to claim 1, it is characterized in that the acidifying decomposition course is under the anaerobic biological environment, adopting sealing is complete anaerobic reation pool or semitight reaction tank form, Xiang Shuizhong adds general active sludge or acidifying bacterial classification, liquid is following stirs, handled hydraulic detention time 2～24 hours, reaction tank pH value is controlled to be 3～6.
5, the treatment process of oil of mirbane in the removal water according to claim 1, it is characterized in that the aerobic biochemical treating processes is the aeration treating processes of activated sludge process or contact oxidation method, sludge concentration 2～5g/L, handle hydraulic detention time and be generally 6～24 hours, reaction tank pH value is controlled to be 6～8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510094222 CN1765772A (en) | 2005-08-31 | 2005-08-31 | Disposal method of nitrobenzene removal from water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510094222 CN1765772A (en) | 2005-08-31 | 2005-08-31 | Disposal method of nitrobenzene removal from water |
Publications (1)
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| CN1765772A true CN1765772A (en) | 2006-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200510094222 Pending CN1765772A (en) | 2005-08-31 | 2005-08-31 | Disposal method of nitrobenzene removal from water |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100390081C (en) * | 2006-06-30 | 2008-05-28 | 河北万圣环保科技集团有限公司 | Process method for waste water containing nitrobenzene and aniline |
| CN102603050A (en) * | 2012-04-01 | 2012-07-25 | 南京大学 | Method for preprocessing nitrobenzene-contained waste water by ferrous sulfide |
| CN102730841A (en) * | 2012-07-10 | 2012-10-17 | 辽宁大学 | Method for degrading nitrobenzene in wastewater under condition of low temperature |
| CN102826649A (en) * | 2012-07-24 | 2012-12-19 | 同济大学 | Method for biological denitrification through slow release of solid carbon source |
| CN105540997A (en) * | 2015-12-12 | 2016-05-04 | 常州大学 | Method for treating nitrobenzene wastewater |
| CN109956619A (en) * | 2019-03-28 | 2019-07-02 | 江苏淮河化工有限公司 | A kind of benzene or methylbenzene nitration class biochemical procss for treating waste water |
| CN110194563A (en) * | 2019-06-13 | 2019-09-03 | 江西吉安国泰特种化工有限责任公司 | A kind of explosive waste water processing system |
-
2005
- 2005-08-31 CN CN 200510094222 patent/CN1765772A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100390081C (en) * | 2006-06-30 | 2008-05-28 | 河北万圣环保科技集团有限公司 | Process method for waste water containing nitrobenzene and aniline |
| CN102603050A (en) * | 2012-04-01 | 2012-07-25 | 南京大学 | Method for preprocessing nitrobenzene-contained waste water by ferrous sulfide |
| CN102730841A (en) * | 2012-07-10 | 2012-10-17 | 辽宁大学 | Method for degrading nitrobenzene in wastewater under condition of low temperature |
| CN102826649A (en) * | 2012-07-24 | 2012-12-19 | 同济大学 | Method for biological denitrification through slow release of solid carbon source |
| CN102826649B (en) * | 2012-07-24 | 2015-04-15 | 同济大学 | Method for biological denitrification through slow release of solid carbon source |
| CN105540997A (en) * | 2015-12-12 | 2016-05-04 | 常州大学 | Method for treating nitrobenzene wastewater |
| CN109956619A (en) * | 2019-03-28 | 2019-07-02 | 江苏淮河化工有限公司 | A kind of benzene or methylbenzene nitration class biochemical procss for treating waste water |
| CN110194563A (en) * | 2019-06-13 | 2019-09-03 | 江西吉安国泰特种化工有限责任公司 | A kind of explosive waste water processing system |
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