Method for treating black odorous water by adopting MBBR combined process

A black and odorous water body and combined process technology, applied in aerobic and anaerobic process treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve the problems of secondary pollution, incomplete treatment, water pollution, etc. , to achieve the effect of strong anti-shock load capacity, high volume load and stable effluent quality

Pending Publication Date: 2018-01-12
济宁市孚源环保科技有限公司
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[0003] The main reason for the formation of black odor in domestic cities and rural areas is that the pollutants entering the water body exceed the self-purification capacity of the water body, making the dissolved oxygen in the water body below 0.2mg/L, making the water body in an anaerobic state, and the organic pollutants in the water body are in an anaerobic state. Under the action of anaerobic microorganisms, some odorous substances such as hydrogen sulfide and volatile acids can be formed, causing serious p

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  • Method for treating black odorous water by adopting MBBR combined process

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example 1

[0036] The black and smelly water body of a river course in a certain city, the water quality COD is 72mg / l, and ammonia nitrogen is 8mg / l, utilizes this invention, according to the test, selects the external reflux ratio of the activated sludge from the settling tank to be 150%; As a result, in this Under the reflux ratio, on the one hand, it can supplement the microbial biomass for the anaerobic fermentation / anoxic tank, and on the other hand, it can bring the nitrification liquid in the activated sludge back to the anoxic tank for the anoxic denitrifying bacteria in the tank to denitrify and remove nitric acid Salt. Due to the further production of part of ammonia nitrogen by hydrolysis and fermentation, together with the TN brought in by the influent water, sometimes the concentration in the MBBR aerobic tank reaches 40 mg / l (generally lower than this value), but both theory and experiments have proved that in 150% active sewage In the case of the sludge return ratio, the ...

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Abstract

The invention discloses a method for treating black odorous water by adopting MBBR combined process and belongs to the field of sewage treatment. The method comprises the following steps: a bottom sediment suction pump outside a pool pumps bottom sediment of black odorous water into an anaerobic fermentation/anoxic tank, the black odorous water and returned sludge pumped from a settling pond by asludge reflux pump are mixed and are subjected to anaerobic fermentation and denitrification reaction, or NO3-N carried into the returned sludge is denitrified and removed by denitrifying bacteria through a carbon source generated through sludge fermentation and microorganism endogenous respiration; mud water subjected to anaerobic fermentation/anoxic pond reaction flows into the aerobic pond through an upper MBBR overflow hole, and meanwhile, water on the upper part outside the pool is lifted and black odorous water on bottom sediment in the black odorous water is pumped into MBBR and flows into the aerobic pond, and organic matters are removed and ammonia nitrogen is nitrified into NO3-N by a biological membrane and suspending active sludge on an efficient suspension carrier in the MBBRaerobic pond; the mud water after reaction in the MBBR aerobic pond automatically flows into the settling pond for mud and water separation through an intercepting suspension carrier effluent screen on the upper part of the water draining edge of the MBBR aerobic pond, and clean water returns into the water. According to the invention, the design is reasonable, the technique is advanced and the deep treatment for the black odorous water and the bottom sediment sludge of the black odorous water in a treatment device system can be realized.

Description

technical field [0001] The invention belongs to the field of sewage treatment, and in particular relates to a method for treating black and odorous water bodies by an MBBR combined process. Background technique [0002] In April 2015, the "Water Pollution Prevention and Control Action Plan" (hereinafter referred to as "Water Ten Measures") was released, and one of the key tasks was the treatment of black and odorous water bodies in cities, which aroused the focus of the industry. Subsequently, the "Guidelines for the Remediation of Urban Black and Odorous Waters" issued in August 2015 clarified the investigation and identification of urban black and odorous waters, the formulation and implementation of remediation plans, the evaluation and assessment of remediation effects, the establishment of long-term mechanisms and policy guarantees and so on. [0003] The main reason for the formation of black odor in domestic cities and rural areas is that the pollutants entering the ...

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Application Information

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IPC IPC(8): C02F3/30C02F101/16C02F101/30
Inventor 牛学义牛卉
Owner 济宁市孚源环保科技有限公司
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