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Waste water treatment method of anerobic- anoxia-aerobic-coagulated precipitation

A technology of coagulation sedimentation and wastewater treatment, which is applied in the direction of flocculation/sedimentation water/sewage treatment, textile industry wastewater treatment, aerobic and anaerobic process treatment, etc., and can solve problems such as not considering the influence of anaerobic treatment components and structures , to achieve the effects of reducing operating costs and investment costs, reducing sludge production, and improving biodegradability

Active Publication Date: 2006-07-12
江苏中宜金大环保产业技术研究院有限公司
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Problems solved by technology

At present, regardless of physical and chemical treatment technology or anaerobic, aerobic and integrated technology, people are limited to the research on their respective optimal process conditions, without considering the impact of components and structures produced by anaerobic treatment on subsequent aerobic biochemical treatment. influences

Method used

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  • Waste water treatment method of anerobic- anoxia-aerobic-coagulated precipitation

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[0026] Example: A centralized sewage treatment plant in a textile printing and dyeing industrial zone, with a design scale of 30,000m 3 / d, using internal and external cycle anaerobic-anoxic-aerobic-coagulation sedimentation process, sewage treatment engineering design influent water quality: COD900~2000mg / l, BOD 5 250~600mg / l, pH 9~11, chroma 400 times, SS300mg / l. The total investment is 50 million yuan, and the operating cost is 1.45 yuan / m 3 , effluent COD60mg / l, BOD 5 10mg / l, pH7, chroma 40 times, SS15mg / l.

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Abstract

The invention relates to industrial sewage that hard to biodegrade, especially in the field of the woven textile dye waste's dealing technology. Dispose the waste water four-step craft in the sequence of anaerobic- anoxybiotic- aerobic-coagulating sedimentation, use anoxybiotic treatment as the high effective transition of anaerobic and aerobic to upgrade the capable of biochemical energy of anaerobic yielding water and eliminate anaerobic metabolite's side effect on the subsequent aerobic microbial activity; use the aerobic aeration to remove organic matter and partial chrominance; use coagulating sedimentation craft to remove the rest non-degradable organic matter after waste water biochemical treatment. Said invented waste water treatment craft can ensure the water outlet COD after the woven textile dye waste's treatment smaller than 100mg / L , BOD5 smaller than 20mg / L, chromaticity lower than 40 times. It has the distinctive features such as high efficiency of removing chromaticity and organics, the yielding water quality stabilizing, the engineer investment small, the operating cost low, thus it's easy to spread to use.

Description

technical field [0001] The invention relates to the treatment of refractory biodegradable industrial waste water, especially the treatment method of textile printing and dyeing waste water, especially the comprehensive treatment method of waste water by using anaerobic-anoxic-aerobic-coagulation sedimentation. Background technique [0002] Textile printing and dyeing wastewater has complex components, often containing a variety of dyes, deep chroma, strong toxicity, refractory degradation, large pH fluctuations, high concentration, and a large amount of wastewater. It is one of the most difficult industrial wastewater to treat. The method of microbial biochemical treatment is recognized as a method with high efficiency and good effect, but there are still some defects in the treatment of textile printing and dyeing wastewater. At present, the better method of using biochemistry in the treatment of textile printing and dyeing wastewater is to adopt...

Claims

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Application Information

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IPC IPC(8): C02F3/30C02F1/52C02F103/30
CPCY02W10/10
Inventor 任洪强严永红尤隽
Owner 江苏中宜金大环保产业技术研究院有限公司
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