Fermenting hydrogen-producing bacterium and method of preventing calcification of activated sludge

An activated sludge and anaerobic fermentation technology, applied in the direction of microorganism-based methods, biochemical equipment and methods, biological sludge treatment, etc., can solve the problems of calcification and sludge, and achieve enhanced activated sludge Sludge, prevention of activated sludge calcification, and improvement of gas production

Inactive Publication Date: 2018-08-17
SHAANXI UNIV OF SCI & TECH
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Problems solved by technology

However, these suggestions did not fundamentally solve the problem of sludge calcification

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  • Fermenting hydrogen-producing bacterium and method of preventing calcification of activated sludge
  • Fermenting hydrogen-producing bacterium and method of preventing calcification of activated sludge

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Embodiment Construction

[0021] Below in conjunction with specific embodiment the present invention is described in further detail, described is explanation of the present invention rather than limitation.

[0022] In order to overcome the problem of sludge calcification in IC anaerobic reactor treatment wastewater (especially papermaking wastewater). The purpose of the present invention is to provide a method for strengthening the activity of anaerobic granular sludge to prevent sludge calcification, by isolating highly efficient fermentative hydrogen-producing bacteria from anaerobic granular sludge, optimizing its fermentation hydrogen production conditions, so that in actual operation Zhongneng can strengthen the growth of hydrogen-producing and acid-producing bacteria in sludge by controlling external factors, and use the volatile fatty acids metabolized by bacteria to destroy CaCO 3 Deposition environment, so as to achieve the purpose of preventing sludge "calcification" and strengthening sludge...

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Abstract

The invention provides a fermenting hydrogen-producing bacterium and a method of preventing calcification of activated sludge. The fermenting hydrogen-producing bacterium is collected under CCTCC M 2018077. By adding the fermenting hydrogen-producing bacterium into a wastewater anaerobic fermentation treatment system in the presence of activated sludge, the activated sludge is enhanced, the gas-producing capacity of the activated sludge is improved, and activated sludge acidification and activated sludge calcification preventing are achieved. Experiments prove that the fermenting hydrogen-producing bacterium enhances the activated sludge reaction system, the gas yield is increased by 15.2%, and highest daily gas yield is increased by 47%, which shows that the fermenting hydrogen-producingbacterium (DW01 strain) has significant influence on biogas production of anaerobic particulate sludge in enhanced stable stage, and activated sludge calcification is positively prevented.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and relates to a method for fermenting hydrogen-producing bacteria and preventing activated sludge calcification. Background technique [0002] Anaerobic fermentation is used in wastewater treatment in various industries, but due to the large difference in the quality of wastewater, the corresponding treatment effects are not the same. As a representative of the third-generation reactor, the IC internal circulation reactor is widely used in wastewater treatment in various industries. Ca 2+ It plays an important role in the process of microbial flocculation. Because the extracellular polymers secreted by microorganisms make the microorganisms electronegativity, the microorganisms continue to aggregate and flocculate, and finally exist in the form of anaerobic granular sludge. However, high calcium content in raw materials will lead to high calcium ion concentration in wastewater and ...

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Application Information

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IPC IPC(8): C12N1/20C02F11/04C02F3/28C12R1/01
CPCC02F3/28C02F11/04C12N1/205C12R2001/01
Inventor 王雪青房玉婷张安龙罗清陈朵赵呈馨董婷婷
Owner SHAANXI UNIV OF SCI & TECH
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