CN102992430A - Method for reducing ammoximation COD - Google Patents
Method for reducing ammoximation COD Download PDFInfo
- Publication number
- CN102992430A CN102992430A CN2011102719326A CN201110271932A CN102992430A CN 102992430 A CN102992430 A CN 102992430A CN 2011102719326 A CN2011102719326 A CN 2011102719326A CN 201110271932 A CN201110271932 A CN 201110271932A CN 102992430 A CN102992430 A CN 102992430A
- Authority
- CN
- China
- Prior art keywords
- waste water
- cod
- amidoxime
- ammonia nitrogen
- tower
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
The invention relates to a method for reducing ammoximation COD. The method has main characteristics that ammoximation waste water is pretreated with added alkali in a stripping column process, wherein alkali is subjected to a reaction with waste water in a waste water stripping column, such that the pH value of the waste water delivered into a waste water column is controlled at 10-13; organic matters in waste water are decomposed; and COD and ammonia nitrogen in waste water are reduced, wherein COD content is reduced from approximately 5000 to below 3000, and ammonia nitrogen is reduced from more than 100 to below 100. According to the invention, no other reaction device is needed, and original devices are not updated. With the method provided by the invention, treatment is carried out at the source, such that indexes of the waste water are reduced to a treatment range, and no secondary pollution is caused.
Description
Technical field
The present invention relates to a kind of method that reduces amidoxime COD.Particularly a kind ofly reduce the COD of device, the method for ammonia nitrogen from amidoxime gasifying device itself part.
Background technology
Hexanolactam is the monomer of synthon and engineering plastics, is market important industrial chemicals in short supply in China always.The at present production of hexanolactam all is to adopt to change into cyclohexanone-oxime from pimelinketone mostly, is rearranged into the operational path of hexanolactam again.What wherein the conversion from the pimelinketone to the cyclohexanone-oxime was adopted all is traditional hydroxylammonium salt oximation process, and intermediate steps is many, and complex process is used macro-corrosion and with serious pollution raw material, and environment is caused very large harm.Therefore at present in the world hexanolactam major country of production except existing technique is improved, all in the brand-new technique of active development caprolactam production.Wherein the most representative is the standby cyclohexanone-oxime technique of the direct prepared by ammoxidation of pimelinketone.
Increase along with the demand in hexanolactam market, the amidoxime gasifying device more and more is subjected to everybody concern, the focus that but the environmental issue of amidoxime gasifying device is for everybody to be paid close attention to, the COD of amidoxime gasifying device, ammonia nitrogen are for a long time within a very high span of control, the wastewater treatment of delivering to the back there is very large pressure, although the waste water of amidoxime gasifying device is also few, and the microorganism in the biochemical system is had very high destruction, can cause the mortality of microorganism; So the COD, the ammonia nitrogen that reduce amidoxime gasifying device itself are imperative.
At present, the wastewater treatment mode of amidoxime gasifying device, all do not have both at home and abroad concrete report, this part wastewater treatment is rested on the unified stage of processing with other workshop section, always behind biochemical system, unified COD, the ammonia nitrogen that reduces in the waste water, this causes the water treatment effect that effluxes at last not obvious with regard to bringing difficulty for whole wastewater treatment, at present, the waste water of amidoxime out mainly concentrates on the biochemical treatment part, shows the following aspects:
A. membrane bioreactor hexanolactam novel process factory effluent out, (process water and waste water, 2007/04. Huang is respected; ) in former A/O treatment system, adopt membrane Bio-reactor Technology that the caprolactam technology factory effluent is carried out biochemical treatment, more effectively improve the ability of the anti-high-concentration waste water slug of caprolactam technology factory effluent biochemical treatment apparatus;
B. the application of anaerobic biological technology in the hexanolactam wastewater treatment, (synthetic fiber industry, 2003/01; Liu Xiaoqin; ) what propose is the mode of the waste water that organic concentration is higher in the caprolactam technology factory effluent being passed through anaerobic treatment;
C. biologic treating technique research in the high nitrogenous concentration organic waste water, (Treatment of Industrial Water, 2004/01; Kou Jianchao, Li Liying etc.) proposed to process hexanolactam waste water with the SBR method, so that reach national secondary discharge standard;
D. the treatment process of a waste water produced by caprolactam ammoximation process, and (2010.01.06, peak, Ma Xin etc.) proposed in pending waste water, to add oxygenant, to lower amidoxime waste water to the impact of biochemical system.
Summary of the invention
The object of the present invention is to provide a kind of method that reduces amidoxime COD, a kind of method of just processing amidoxime gasifying device waste water from the source is particularly proposed, COD in the waste water of amidoxime gasifying device production technique, ammonia nitrogen are reduced to the close standard of COD in the azanol workshop section device, the organism that decomposition is harmful to microorganism, improve the biodegradability of waste water, to lower the amidoxime gasifying device to the impact of biochemical treatment, reach the waste water index of similar production technique, the unified processing.
Technical scheme of the present invention is: a kind of method that reduces amidoxime COD, it is characterized in that: the waste water of amidoxime is added alkali in the stripping tower operation give processing, the alkali lye of concentration 50% directly is provided from the fresh feed pump of water vaporization tower, enter the water vaporization tower reaction with waste water, the pH value that enters the waste water of waste water tower is controlled at 10-13, organism in the Decomposition Wastewater, reduce COD, ammonia nitrogen in the waste water, be reduced in 3000 by original COD content 5000, ammonia nitrogen is by original being reduced in 100 more than 100.
Among the present invention, adding the alkali pre-treatment is directly to add the pH value that water vaporization tower is regulated waste water, no longer joins trimethyl carbinol tower and controls the pH value.
Among the present invention, amidoxime waste water is COD and the ammonia nitrogen of handling it to reduce self in the amidoxime gasifying device, then the waste water of amidoxime is delivered to biochemical device and is followed the waste water mixing of azanol, pimelinketone device to focus on.
Among the present invention, only need to increase a pipeline that adds alkali at the fresh feed pump entrance of water vaporization tower, not need to increase other conversion unit, also not upgrade existing equipment.
Technical superiority of the present invention:
(1) of the present inventionly adds the alkali pre-treatment and do not need newly added equipment, the waste water of amidoxime can be reduced in 3000 equally, thereby improve the processing power of back waste water plant, avoided the great amount of investment of follow-up biochemical system cost;
(2) the present invention adopts method simple, obvious processing effect;
(3) compare with the additive method that similar technology adopts, the present invention processes from the source, waste water is reduced within the process range non-secondary pollution.
Embodiment
Processing mode of the present invention is: at present, the processing mode of amidoxime COD waste water is: the waste water of wastewater trough is pumped to the direct stripping of water vaporization tower by wastewater feed, the waste water unification of then going out from the wastewater stripping tower bottom enters biochemical treatment apparatus, with processings that be mixed of the waste water of azanol, pimelinketone device workshop section, the pH value in the waste water adds alkali by trimethyl carbinol tower and controls at biochemical treatment apparatus; And the present invention adds the alkali pre-treatment with the waste water of amidoxime in the stripping tower operation, do not add alkali at trimethyl carbinol tower, the alkali lye of concentration 50% directly is provided from the fresh feed pump of water vaporization tower, waste water with wastewater trough enters the water vaporization tower reaction, the pH that enters the waste water of waste water tower is controlled at about 10-13, thereby the organism in the Decomposition Wastewater, reduce the COD in the waste water, ammonia nitrogen, the COD content about 5000 of wastewater stripping tower bottom is reduced in 3000, ammonia nitrogen is from original being reduced to more than 100 in 100, final waste water tower bottom reduces COD and sends into biochemical device with azanol with the waste water of ammonia nitrogen again, the waste water of pimelinketone device workshop section is unified to be processed, and this has just reduced the difficulty of biochemical device processing waste water.
Below in conjunction with embodiment the effect of the present invention and former processing mode is explained.
Embodiment 1: from the entrance of wastewater feed pump, add the alkali lye of concentration 50%, control pH=10, the content of Analysis for CO D, ammonia nitrogen are relatively.
| Waste water quality | COD | Ammonia nitrogen | pH |
| Original processing mode | 4860 | 149 | 10 |
| After waste water directly adds alkali | 2860 | 44 | 10 |
From above data declaration, directly add alkali in the waste water after, COD, ammonia nitrogen decrease.
Embodiment 2: from the entrance of wastewater feed pump, add the alkali lye of concentration 50%, control pH=11, the content of Analysis for CO D, ammonia nitrogen are relatively.
| Waste water quality | COD | Ammonia nitrogen | pH |
| Original processing mode | 4950 | 78 | 11 |
| After waste water directly adds alkali | 3040 | 34 | 11 |
From above data declaration, directly add alkali in the waste water after, COD, ammonia nitrogen decrease.
Embodiment 3: from the entrance of wastewater feed pump, add the alkali lye of concentration 50%, control pH=12, the content of Analysis for CO D, ammonia nitrogen are relatively.
| Waste water quality | COD | Ammonia nitrogen | pH |
| Original processing mode | 4680 | 86 | 12 |
| After waste water directly adds alkali | 1860 | 36 | 12 |
From above data declaration, directly add alkali in the waste water after, COD, ammonia nitrogen decrease, and simultaneously along with the rising of pH, add the increase of alkali number, COD has obvious reduction in the waste water, and ammonia nitrogen also decreases.
Claims (3)
1. method that reduces amidoxime COD, it is characterized in that: the waste water of amidoxime is added alkali in the stripping tower operation give processing, the alkali lye of concentration 50% directly is provided from the fresh feed pump of water vaporization tower, enter the water vaporization tower reaction with waste water, the pH value that enters the waste water of waste water tower is controlled at 10-13, and the organism in the Decomposition Wastewater reduces COD, ammonia nitrogen in the waste water, be reduced in 3000 by original COD content 5000, ammonia nitrogen is by original being reduced in 100 more than 100.
2. method according to claim 1, it is characterized in that: adding the alkali pre-treatment is directly to add the pH value that water vaporization tower is regulated waste water, no longer joins trimethyl carbinol tower and controls the pH value.
3. method according to claim 1, it is characterized in that: amidoxime waste water is COD and the ammonia nitrogen of handling it to reduce self in the amidoxime gasifying device, then the waste water of amidoxime is delivered to biochemical device and is followed the waste water mixing of azanol, pimelinketone device to focus on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110271932.6A CN102992430B (en) | 2011-09-15 | 2011-09-15 | Method for reducing ammoximation COD |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110271932.6A CN102992430B (en) | 2011-09-15 | 2011-09-15 | Method for reducing ammoximation COD |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102992430A true CN102992430A (en) | 2013-03-27 |
| CN102992430B CN102992430B (en) | 2014-05-07 |
Family
ID=47921636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110271932.6A Active CN102992430B (en) | 2011-09-15 | 2011-09-15 | Method for reducing ammoximation COD |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102992430B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107739129A (en) * | 2017-10-31 | 2018-02-27 | 浙江圣安化工股份有限公司 | A kind of processing method of the waste water containing oxime |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1549927A1 (en) * | 1987-11-30 | 1990-03-15 | Государственный Научно-Исследовательский И Проектный Институт Метанола И Продуктов Органического Синтеза С Опытным Заводом | Method of biological treatment of waste water |
| CN101618919A (en) * | 2008-06-30 | 2010-01-06 | 中国石油化工股份有限公司 | Method for processing waste water produced by caprolactam ammoximation process |
| CN101734825A (en) * | 2008-11-20 | 2010-06-16 | 中国石油化工股份有限公司 | Method for treating wastewater generated by cyclohexanone ammoximation process |
| CN101993173A (en) * | 2009-08-31 | 2011-03-30 | 吉林东圣焦化有限公司 | Improved alkaline process flow with coking sewage treatment (A/O) method |
| CN102030434A (en) * | 2009-09-30 | 2011-04-27 | 中国石油化工股份有限公司 | Method for pretreating cyclohexanone ammoximation waste water |
-
2011
- 2011-09-15 CN CN201110271932.6A patent/CN102992430B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1549927A1 (en) * | 1987-11-30 | 1990-03-15 | Государственный Научно-Исследовательский И Проектный Институт Метанола И Продуктов Органического Синтеза С Опытным Заводом | Method of biological treatment of waste water |
| CN101618919A (en) * | 2008-06-30 | 2010-01-06 | 中国石油化工股份有限公司 | Method for processing waste water produced by caprolactam ammoximation process |
| CN101734825A (en) * | 2008-11-20 | 2010-06-16 | 中国石油化工股份有限公司 | Method for treating wastewater generated by cyclohexanone ammoximation process |
| CN101993173A (en) * | 2009-08-31 | 2011-03-30 | 吉林东圣焦化有限公司 | Improved alkaline process flow with coking sewage treatment (A/O) method |
| CN102030434A (en) * | 2009-09-30 | 2011-04-27 | 中国石油化工股份有限公司 | Method for pretreating cyclohexanone ammoximation waste water |
Non-Patent Citations (1)
| Title |
|---|
| 刘久清等: "己内酰胺生产污水可生化性研究", 《水处理技术》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107739129A (en) * | 2017-10-31 | 2018-02-27 | 浙江圣安化工股份有限公司 | A kind of processing method of the waste water containing oxime |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102992430B (en) | 2014-05-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102259976B (en) | Method for quickly starting anaerobic ammonia oxidation reactor | |
| CN104404090A (en) | Method for promoting residual sludge to carry out anaerobic fermentation to produce acid | |
| CN105668783A (en) | Integrated cultivation farm wastewater biological treatment reactor | |
| WO2022143256A1 (en) | Chemical sewage treatment and reuse system | |
| CN103011526A (en) | Method for treating erythromycin thiocyanate wastewater | |
| Sumardiono et al. | The effect of COD/N ratios and pH control to biogas production from vinasse | |
| CN103058475A (en) | Method for processing sludge by utilizing thermophile bacteria reinforcement ATAD (Autothermal Thermophilic Aerobic Digestion) process | |
| CN107176765B (en) | Process method for treating sorbic acid wastewater | |
| CN105585102A (en) | Treating process of penicillin production wastewater | |
| CN102531303A (en) | Method for improving dry process fermenting property of municipal sludge by sludge modification | |
| CN101708892B (en) | Advanced treatment method for coal chemical wastewater | |
| CN101555069B (en) | Method for using anaerobic co-metabolism to process wastewater of coal chemical industry | |
| CN102992430B (en) | Method for reducing ammoximation COD | |
| CN104828945B (en) | A kind of method that low-carbon high-nitrogen starch wastewater is handled based on Modified SBR method | |
| CN103896446A (en) | Treatment process of high-concentration pig farm wastewater | |
| CN104860495A (en) | Method for synchronously increasing yield and percentage composition of methane through adjustment of alkali and carbon nitrogen ratios | |
| CN214060287U (en) | Ultrasonic treatment system for sludge reduction and carbon source recycling | |
| CN103613261A (en) | Thermal alkaline enhanced three-stage municipal sludge anaerobic digestion method | |
| CN113502210A (en) | Carbon dioxide internal circulation biogas fermentation carbon reduction method | |
| CN103305558B (en) | Method for producing short-chain fatty acid by promoting combined anaerobic fermentation of excess sludge and ryegrass through thermal pretreatment | |
| CN102923903A (en) | Textile printing and dyeing wastewater processing technology | |
| CN106242082B (en) | Biological strain screening, culturing and solidifying device, method and application | |
| CN101830532B (en) | Acrylic acid wastewater preprocessing process | |
| CN104445610A (en) | Method for treating lignite upgrading wastewater by anaerobic co-metabolism | |
| CN110551655A (en) | composite biological agent, preparation method thereof and application thereof in printing and dyeing textile sewage treatment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |