CN102976562A - Chemical integrated wastewater treatment process - Google Patents
Chemical integrated wastewater treatment process Download PDFInfo
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- CN102976562A CN102976562A CN2012105563827A CN201210556382A CN102976562A CN 102976562 A CN102976562 A CN 102976562A CN 2012105563827 A CN2012105563827 A CN 2012105563827A CN 201210556382 A CN201210556382 A CN 201210556382A CN 102976562 A CN102976562 A CN 102976562A
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Abstract
The invention belongs to the technical field of chemical wastewater treatment, and particularly relates to a chemical integrated wastewater treatment process. The chemical integrated wastewater treatment process comprises the following steps of: (1) physical and chemical treatment, (2) biochemical treatment, and (3) sludge treatment; and the chemical integrated wastewater treatment process is a scientific, reasonable, effective and low-cost wastewater treatment process technology.
Description
Technical field
The invention belongs to the technical field that chemical engineering sewage is processed, be specifically related to a kind of chemical industry composite wastewater treatment process.
Background technology
At present existing chemical engineering sewage treatment process has two kinds to the processing mode of organic pollutant in the sewage, and a kind of is the materialization processing, and another kind of is biochemical treatment; In biochemical processing process, be divided into again aerobic treatment, anaerobic treatment, anaerobic and aerobic in conjunction with processing.Above-mentioned technique can only be removed wherein sub-fraction to the nutritive substances such as simultaneous nitrogen, phosphorus in the sewage, the clearance of general nitrogen only has about 20%, the phosphorus of removing by biochemical treatment also only has 15%～20%, remaining most of the nitrogen and phosphorus will be discharged into receiving water body with water outlet, therefore can not satisfy the environmental requirement of processing requirements and the increasingly stringent of industrial park sewage work.
Summary of the invention
The object of the invention is to for the defective of above-mentioned existence and a kind of chemical industry composite wastewater treatment process is provided, the characteristics such as this treatment process is more for complicated component, the hazardous and noxious substances of chemical industry composite wastewater, biochemical is poor, saltiness is high, color heavy, the mode that adopts Fenton materialization and biochemical treatment to combine is processed the organic pollutant in the sewage.Materialization by Fenton is processed, the stability of regulating water quality and biochemical, the again processing such as the absorption by biochemical treatment and biological activated carbon, biochemistry, reduction, improve processing efficiency, reduce chemical industry composite wastewater processing cost, be a kind of science, reasonably, effectively, sewage treatment technology cheaply.
Technical scheme of the present invention is: a kind of chemical industry composite wastewater treatment process may further comprise the steps:
(1) materialization is processed: sewage enters coarse rack, equalizing tank, Fenton materialization pond, preliminary sedimentation tank successively by water-in, finishes the materialization of sewage and processes;
(2) biochemical treatment: the sewage of step (1) being finished the materialization processing is inputted fine fack, aerated grit chamber, a heavy pond successively; Then enter the contact anaerobic pond and carry out the anaerobic biological processing; Enter again the CASS pond and in the CASS pond, add biological activated carbon, carry out the aerobic treatment of sewage, obtain supernatant liquor and mud; Supernatant liquor is successively through being qualified water outlet behind flocculation sedimentation tank, the disinfection by chlorine dioxide pond;
(3) sludge treatment: the mud that produces in step (1) and the step (2) carries out mechanical sludge dewatering after via sludge thickener, obtains mud cake, then with the mud cake landfill.
Contact anaerobic pond in the described step (1) is biological membrane type Anaerobic Contact hydrolytic tank.Biological membrane type Anaerobic Contact hydrolytic tank integrates biological degradation and adsorption, obtains decomposing under the microbial processs such as acid formers and degraded; Although the hydrolysis acidification pool hydraulic detention time is not long, mud (microorganism) residence time is longer, can improve the biodegradability of sewage, improves the B/C ratio, is conducive to follow-up aerobe and processes, and its organism and suspended solids clearance also obviously improve.
CASS pond in the described step (2) is three.Can biochemical organism, degraded is thoroughly finished nitration reaction, satisfies to purify requirement.
Micro-pore aeration is adopted in bottom, CASS pond in the described step (2).Micro-pore aeration is so that coefficient of oxygen utilization improves, and also capable of reducing energy consumption, micro-pore aeration is comparatively evenly little to the shearing force of mud simultaneously, can guarantee that the zoogloea of generation is not broken up the generation that can effectively avoid the mud dead angle.
Mechanical sludge dewatering in the described step (3) adopts belt type dewaterer to carry out sludge dewatering.
Beneficial effect of the present invention is: the mode that the present invention adopts Fenton materialization and biochemical treatment to combine is processed the organic pollutant in the sewage, sewage enters Fenton materialization pond in the sewage pre-treatment, carrying out Fenton oxidation processes, the sewage biochemical is improved in the Fenton oxidation system, colourity declines to a great extent, the COD of sewage also declines to a great extent simultaneously, can remove organism about most of colourity and 50% by the oxidation of Fenton reagent, by the regulating effect that the Fenton materialization is processed, provide a water quality more stable for later stage biochemical treatment operation, the sewage that biochemical is good.
For guaranteeing the complete qualified discharge of colourity and COD, and remove the part hazardous and noxious substances and in the CASS pond, add biological activated carbon substance that show color is further adsorbed, further remove the organic compound that biochemical treatment can't be removed, reach better removal effect.
Biological activated carbon has the dual nature of physical adsorption and chemisorption, and the biological reducing effect with gac, can selectively adsorb the various materials in gas phase, the liquid phase, reaching the purposes such as decolorizing and refining, disinfecting, deodorizing and decontamination purification, but also have detoxification.Detoxification is exactly to have utilized its huge area, poisonous substance is adsorbed in the micropore of biological activated carbon, thus the absorption of prevention poisonous substance.Colourity and organic substance can be further removed in absorption by biological activated carbon.
For the pathogenic bacterium that prevent the sewage the inside work the mischief to water body, this technique is also carried out disinfecting of water, guarantees that water outlet no longer causes secondary pollution, simultaneously the part that can be removed ammonia nitrogen.
Evaluation to sterilization will consider stability in the ability of killing livestock and the water.For water treatment 4 kinds of sterilizing agents (chlorine, dioxide peroxide, ozone, chloramines) commonly used, from the ability of killing livestock, ozone＞dioxide peroxide＞chlorine＞chloramines; From stability, chloramines＞dioxide peroxide＞chlorine＞ozone.Comprehensive, dioxide peroxide is a kind of sterilizing agent preferably wherein.So the present invention adopts novel C lO
2Water is carried out disinfection.
Chemical industry composite wastewater treatment process of the present invention, the characteristics such as this treatment process is more for complicated component, the hazardous and noxious substances of chemical industry composite wastewater, biochemical is poor, saltiness is high, color heavy, the mode that adopts Fenton materialization and biochemical treatment to combine is processed the organic pollutant in the sewage.Materialization by Fenton is processed, the stability of regulating water quality and biochemical, the again processing such as the absorption by biochemical treatment and biological activated carbon, biochemistry, reduction, improve processing efficiency, reduce chemical industry composite wastewater processing cost, reach science, reasonably, effectively, sewage treatment technology cheaply.This technique can be concentrated sewage disposal influent quality standard C ODcr with the industry park of national requirements :≤500mg/L brings up to CODcr :≤800mg/L, the influent quality that is higher than the requirement of domestic industry garden requires CODcr=300mg/L.Technique is simple and clear, efficient, easy to operate, can realize the auto-control of higher level.Reaching under the prerequisite of Effluent criteria, not only want reduce cost, more to reduce the day-to-day operation expense.The stability of whole system operation.
Embodiment
A kind of chemical industry composite wastewater treatment process may further comprise the steps:
(1) materialization is processed: sewage enters coarse rack successively by water-in, at first removes floating matter larger in the sewage, prevents from stopping up follow-up water pump assembly.By lift pump the sewage one-level is promoted and to enter equalizing tank, carry out the adjusting of water quality, the water yield, make the sewage can be because of the follow-up biochemical treatment of the excessive variable effect of water quality and quantity.Laggardly enter Fenton materialization pond and carry out Fenton oxidation and process through overregulating, remove colourity and improve the biodegradability of sewage.Finally by crossing preliminary sedimentation tank, finish the materialization of sewage and process;
(2) biochemical treatment: the sewage of step (1) being finished the materialization processing is inputted fine fack, aerated grit chamber, a heavy pond successively by the lift pump two-stage hoisting, in aerated grit chamber, remove the sand grains in the sewage, enter the partial suspended thing in the heavy pond removal sewage; Then enter biological membrane type Anaerobic Contact hydrolytic tank and carry out the anaerobic biological processing, reduce the raw waste water organic loading, improve the biodegradability of sewage; Enter again the CASS pond and in the CASS pond, add biological activated carbon, sewage is carried out the biochemical treatment that cyclic activated sludge system and biological activated carbon combine, obtain supernatant liquor and mud; Supernatant liquor passes through flocculation sedimentation tank successively, adds flocculation agent in flocculation sedimentation tank, carries out solid-liquid separation, then enters the disinfection by chlorine dioxide pond, carry out water sterilization after, be qualified water outlet; Be qualified water outlet behind the disinfection by chlorine dioxide pond;
(3) sludge treatment: the mud that produces in step (1) and the step (2) carries out mechanical sludge dewatering after via sludge thickener, obtains mud cake, then with the mud cake landfill.
CASS pond in the described step (2) is three.Can biochemical organism, degraded is thoroughly finished nitration reaction, satisfies to purify requirement.
Micro-pore aeration is adopted in bottom, CASS pond in the described step (2).Micro-pore aeration is so that coefficient of oxygen utilization improves, and also capable of reducing energy consumption, micro-pore aeration is comparatively evenly little to the shearing force of mud simultaneously, can guarantee that the zoogloea of generation is not broken up the generation that can effectively avoid the mud dead angle.
Mechanical sludge dewatering in the described step (3) adopts belt type dewaterer to carry out sludge dewatering.
Adopt treatment process gained sewage disposal data of the present invention to see Table 1.
Table 1
Claims (5)
1. chemical industry composite wastewater treatment process may further comprise the steps:
(1) materialization is processed: sewage enters coarse rack, equalizing tank, Fenton materialization pond, preliminary sedimentation tank successively by water-in, finishes the materialization of sewage and processes;
(2) biochemical treatment: the sewage of step (1) being finished the materialization processing is inputted fine fack, aerated grit chamber, a heavy pond successively; Then enter the contact anaerobic pond and carry out the anaerobic biological processing; Enter again the CASS pond and in the CASS pond, add biological activated carbon, carry out the aerobic treatment of sewage, obtain supernatant liquor and mud; Supernatant liquor is successively through being qualified water outlet behind flocculation sedimentation tank, the disinfection by chlorine dioxide pond;
(3) sludge treatment: the mud that produces in step (1) and the step (2) carries out mechanical sludge dewatering after via sludge thickener, obtains mud cake, then with the mud cake landfill.
2. chemical industry composite wastewater treatment process according to claim 1 is characterized in that, the contact anaerobic pond in the described step (1) is biological membrane type Anaerobic Contact hydrolytic tank.
3. chemical industry composite wastewater treatment process according to claim 1 is characterized in that, the CASS pond in the described step (2) is three.
4. chemical industry composite wastewater treatment process according to claim 1 is characterized in that, micro-pore aeration is adopted in the bottom, CASS pond in the described step (2).
5. chemical industry composite wastewater treatment process according to claim 1 is characterized in that, the mechanical sludge dewatering in the described step (3) adopts belt type dewaterer to carry out sludge dewatering.
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| CN2012105563827A CN102976562A (en) | 2012-12-20 | 2012-12-20 | Chemical integrated wastewater treatment process |
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| CN2012105563827A CN102976562A (en) | 2012-12-20 | 2012-12-20 | Chemical integrated wastewater treatment process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103508630A (en) * | 2013-09-12 | 2014-01-15 | 江苏和顺环保股份有限公司 | Industrial wastewater treatment system |
| CN105668916A (en) * | 2015-12-31 | 2016-06-15 | 安徽省绿巨人环境技术有限公司 | Daily chemical industry wastewater treatment method and apparatus thereof |
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| EP0325720B1 (en) * | 1988-01-26 | 1995-02-15 | Nihon Parkerizing Co., Ltd. | Method for treating a cyano-containing waste liquid |
| CN101734827A (en) * | 2009-12-29 | 2010-06-16 | 广西博世科环保科技有限公司 | Method for treating yeast wastewater |
| CN201770581U (en) * | 2010-07-23 | 2011-03-23 | 哈尔滨工业大学深圳研究生院 | Discharge and treatment device for high-concentration biochemical pharmaceutical wastewater |
| CN102311169A (en) * | 2011-04-07 | 2012-01-11 | 大连迈克环境科技工程有限公司 | Integrated treatment device for granular activated carbon-SBR (Sequencing Batch Reactor) high salt organic wastewater |
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2012
- 2012-12-20 CN CN2012105563827A patent/CN102976562A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0325720B1 (en) * | 1988-01-26 | 1995-02-15 | Nihon Parkerizing Co., Ltd. | Method for treating a cyano-containing waste liquid |
| CN101734827A (en) * | 2009-12-29 | 2010-06-16 | 广西博世科环保科技有限公司 | Method for treating yeast wastewater |
| CN201770581U (en) * | 2010-07-23 | 2011-03-23 | 哈尔滨工业大学深圳研究生院 | Discharge and treatment device for high-concentration biochemical pharmaceutical wastewater |
| CN102311169A (en) * | 2011-04-07 | 2012-01-11 | 大连迈克环境科技工程有限公司 | Integrated treatment device for granular activated carbon-SBR (Sequencing Batch Reactor) high salt organic wastewater |
Non-Patent Citations (3)
| Title |
|---|
| 《环境科技》 20110228 袁孟云 等 "水解-CASS-活性炭"工艺在输液废水处理中的应用 第39-41页 1-5 第24卷, 第1期 * |
| 徐洪斌 等: "酒精生产企业废水处理工艺的评价与优化", 《中国给水排水》, vol. 24, no. 10, 31 May 2008 (2008-05-31) * |
| 袁孟云 等: ""水解-CASS-活性炭"工艺在输液废水处理中的应用", 《环境科技》, vol. 24, no. 1, 28 February 2011 (2011-02-28), pages 39 - 41 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103508630A (en) * | 2013-09-12 | 2014-01-15 | 江苏和顺环保股份有限公司 | Industrial wastewater treatment system |
| CN105668916A (en) * | 2015-12-31 | 2016-06-15 | 安徽省绿巨人环境技术有限公司 | Daily chemical industry wastewater treatment method and apparatus thereof |
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Application publication date: 20130320 |