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Method for sludge reduction by using compound microbial preparation

A composite microorganism and sludge reduction technology, applied in the field of bioengineering, can solve problems such as lack of economic applicability, application of sewage treatment plants, and small scope of application, etc., to reduce excess sludge treatment, low cost, and improve treatment effect Effect

Inactive Publication Date: 2016-06-08
LIAONING HUIYUAN BIOLOGICAL ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Description
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  • Application Information

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Problems solved by technology

At present, most sludge source reduction technologies are technically imperfect and mature, or have a small scope of application, or do not have economic applicability, and have not been well applied in sewage treatment plants. There is an urgent need to develop new technologies with high efficiency and good adaptability.

Method used

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Examples

Experimental program
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Embodiment Construction

[0012] The present invention will be further described below in conjunction with embodiment.

[0013] This example proceeds as follows.

[0014] A sewage treatment plant in Fushun City, with a total design scale of 250,000m3 / d, adopts the SBR method DAT-IAT (DemandAerationTank-Inter-mittentAerationTank) secondary biochemical treatment process. It mainly receives urban domestic sewage in Fushun City and industrial sewage from 20 large enterprises except the No. 2 Petroleum Plant, Ethylene Plant, and Acrylic Fiber Plant. Domestic sewage accounts for 70% and industrial sewage accounts for 30%.

[0015] The water quality indicators entering the biochemical system are as follows:

[0016] CODcr: 290mg / L

[0017] BOD 5 : 75mg / L

[0018] Ammonia nitrogen: 20mg / L

[0019] SS: 60mg / L

[0020] Dosing amount of compound microbial preparation: 0.1-0.2‰ of the volume of the biochemical pool.

[0021] Add the compound microbial preparation whose initial concentration is 0.1-0.2‰ of t...

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Abstract

The invention discloses a method for sludge reduction by using a compound microbial preparation; the compound microbial preparation with the initial concentration of 0.01-0.02% of the processing capacity of a biochemical pond is added in the biochemical pond. The method has the beneficial effects that the compound microbial preparation is directly added in the biochemical pond, sludge source reduction is performed by microorganisms, the microbial characteristics of high efficiency, low consumption, multiple functions and self reproduction are fully played, the processing effect is improved, the cost is lower, and sludge effective reduction can be realized.

Description

technical field [0001] The invention relates to the technical field of bioengineering, in particular to a method for reducing sludge volume by using a compound microbial preparation. Background technique [0002] Urban domestic sewage treatment has become the focus of much attention in environmental protection. Among them, the activated sludge method is currently the most widely used biological treatment technology in urban sewage and industrial wastewater treatment plants in the world, but one of its biggest drawbacks is the large sludge output. Because the sludge contains heavy metals and pathogens, it is harmful to human and biological health, which limits the land use of sludge, and the available land is gradually decreasing. The final disposal of sludge is becoming more and more difficult, which makes people pay more attention to it. A treatment process that reduces sludge production. The most ideal method is to reduce the output of sludge at the same time in the proc...

Claims

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Application Information

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IPC IPC(8): C02F11/02
Inventor 赵飞叶姜瑜窦建军
Owner LIAONING HUIYUAN BIOLOGICAL ENVIRONMENTAL PROTECTION TECH CO LTD
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