Organic waste water treatment process

A technology for organic wastewater treatment and organic wastewater, applied in the treatment process of water, sewage or sludge, and the field of wastewater, can solve the problems of difficult oxidation reaction, can not effectively destroy the dispersion system, can not produce precipitation effect, etc. rate effect

Inactive Publication Date: 2005-06-29
何义亮 +1
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Problems solved by technology

For the case of low concentration of organic wastewater, the above treatment processes can be adapted, but there are special difficulties in the treatment of high concentration organic wastewater: 1. Because the concentration of organic wastewater is too high, when adding coagulant, it cannot effectively destroy its 2. When the concentration of organic wastewater is too high, aerobic bacteria cannot survive and anaerobic bacteria replace it, so the oxidation reaction is difficult to carry out

Method used

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  • Organic waste water treatment process
  • Organic waste water treatment process
  • Organic waste water treatment process

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Embodiment 1

[0018] The experimental wastewater is taken from the chemical reagent wastewater discharged from a chemical plant, COD cr About 4000~5000mg / L, BOD 5 About 300~600mg / L, NH 3 -N is about 100mg / L or so. The volume ratio of iron shavings and carbon powder in the iron-carbon micro-electrolytic cell is 1:1, and the aeration volume is 1.5m 3 Gas / m 3 Water.min, the action time is 2-3 hours, the dosage of hydrogen peroxide is 1mL / L wastewater, and the dosage of PAM is 5mg / L. The rejuvenated Type A complex microorganisms were added to the anaerobic acidification hydrolysis system, the hydraulic retention time was 48 hours, and the supernatant was taken out for SBR aerobic treatment. Add rejuvenated B-type complex microorganisms into the aerobic treatment tank, aerate for 16-18 hours, stir for 2 hours, settle for about 2 hours and then discharge. The physical and chemical pretreatment process combining iron-carbon micro-electrolysis, Fenton oxidation, and coagulation-sedimentation h...

Embodiment 2

[0025] Shanghai Shisihewei Chemical Co., Ltd. is located at No. 1004, Wusong Taihe Road, Baoshan District, Shanghai. It mainly produces various chemical products, including azobisisobutyronitrile, azobisisoheptanonitrile, OBPA and TAN. The produced industrial wastewater contains not only a large amount of suspended solids and organic matter, but also ammonia nitrogen, cyanide, fluoride and various metal ions. Water volume 1200m 3 / d, the influent COD is as high as 4000-6000mg / L, and the B / C is only 0.15. At the same time, due to the discharge of a large amount of acid in the production process, the wastewater is acidic and highly corrosive. The organic wastewater treatment process designed by the present invention is applied See figure 2 . Figure 6 and Figure 7 Respectively COD and NH after stable operation of the present invention 3 - Schematic diagram of the removal effect of N. From the running results, it can be seen that the COD in the final effluent is below 100mg...

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Abstract

Disclosed is a technique for processing organic waste water, including the following steps: (a) preprocession: pour the waste water into the micro electrolytic reducing pool where the iron-carbon micro electrolytic reaction occurs under the agtatering effect, add hydrogen peroxide into it to have. Fento oxidation, then the water enters into coagulation pool into which add NaOH and PAM; (b) anaerobe hydrolysis oxidation procession: power the organic waste water preprocessed into high effective anaerobe hydrolysis oxidation pool in which add into the TCBS reactor in which add into high effective compound microbe, making the water mix with the flowing-back mud with high density after denitrification. The invention can increase the biochemical of organic waste water, strengthen its resistance to poison and impact as well as the biological denitrification funcation, and making the waste water reach the national environment protection requirement by reducing the polluting load by steps.

Description

technical field [0001] The invention relates to a treatment process for water, waste water, sewage or sludge, in particular to a multistage treatment process for water, waste water, sewage or sludge. Background technique [0002] At present, the treatment methods used for biodegradable organic wastewater mainly include: physical method, which uses photolysis to treat refractory or non-biodegradable organic compounds to convert them into biodegradable organic compounds; physical and chemical methods, such as: Coagulation precipitation (air flotation) method, adsorption method, membrane separation method, gas stripping method, extraction method, etc.; chemical method, such as: redox method, wet oxidation method, chemical incineration method, etc.; biochemical method, such as: good Oxygen activated sludge method, PAC-activated sludge method, incomplete anaerobic-aerobic process and membrane bioreactor technology, etc. Related organic wastewater tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
Inventor 何义亮
Owner 何义亮
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