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Rapid cultivation of short-range denitrifying bacteria and production of NO using fermented sludge as carbon source 2 - device and method

A short-range denitrification and denitrifying bacteria technology is applied in the field of sewage biological treatment, which can solve the problems of difficulty in enriching denitrifying bacteria, inability to utilize refractory organic matter, etc., achieving no hidden harm, saving carbon sources, and avoiding secondary pollution. Effect

Active Publication Date: 2021-10-15
BEIJING UNIV OF TECH
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The enrichment of short-range denitrifying bacteria is relatively difficult, and the selectivity to carbon sources is strong, and easy-to-degrade organic matter can be used, but difficult-to-degrade organic matter cannot be used.

Method used

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  • Rapid cultivation of short-range denitrifying bacteria and production of NO using fermented sludge as carbon source <sub>2</sub> <sup>-</sup> device and method
  • Rapid cultivation of short-range denitrifying bacteria and production of NO using fermented sludge as carbon source <sub>2</sub> <sup>-</sup> device and method
  • Rapid cultivation of short-range denitrifying bacteria and production of NO using fermented sludge as carbon source <sub>2</sub> <sup>-</sup> device and method

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Embodiment Construction

[0034] Below in conjunction with accompanying drawing and embodiment the present invention will be further described: as figure 1 As shown, single sludge fermentation coupled with short-cut denitrification can achieve sludge reduction and NO 2 - The device and method for accumulating, is characterized in that it comprises a sewage storage tank (1), a nitrification liquid water tank (2), a sludge fermentation coupling short-range denitrification reactor (3), a water outlet tank (4), online monitoring and feedback control system (5); the sludge storage tank (1) is connected to the sludge fermentation coupled short-range denitrification reactor (3) through a sludge inlet pump (3.1); It is connected with the sludge fermentation coupled short-range denitrification reactor (3); the sludge fermentation coupled short-range denitrification reactor (3) is connected with the discharge electric valve (3.3) and the water outlet tank (4).

[0035] The sludge storage tank (1) is equipped w...

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Abstract

Rapid cultivation of short-range denitrifying bacteria and production of NO using fermented sludge as carbon source 2 ‑ The device and the method belong to the field of sewage biological treatment. The device includes a sludge storage tank, a nitrifying liquid raw water tank, a sludge fermentation coupled short-range denitrification sequencing batch reactor, and a water outlet tank. After the remaining sludge is mixed, it enters the sludge fermentation coupling short-range denitrification reactor to complete the hydrolysis and acidification of the sludge, and then the nitrification liquid enters the reactor to realize NO 2 ‑ generation. In the sludge fermentation coupled short-range denitrification reactor, the sludge fermentation microorganisms first ferment the remaining sludge into easily degradable organic matter, realize sludge reduction and provide carbon sources for short-range denitrification; after the sludge fermentation is completed, Short-range denitrification is achieved using fermentation products as carbon sources. This method combines sludge fermentation with short-range denitrification and is applied to sewage biological treatment. On the basis of saving land area, saving carbon source, and realizing sludge reduction, harmlessness, and resource utilization, NO 2 ‑ accumulation.

Description

technical field [0001] The invention relates to rapid cultivation of short-range denitrifying bacteria and production of NO using fermented sludge as a carbon source 2 - The device and method belong to the technical field of sewage biological treatment, and are used to realize the reduction, harmlessness and resource utilization of excess sludge while realizing NO 2 - Accumulated experimental devices and methods. Background technique [0002] With the rapid development of industry, environmental problems have become more and more prominent, nitrogen pollution in water bodies has become more and more serious, and eutrophication has occurred frequently, which has aroused people's great attention. How to make the method of removing nitrogenous compounds in water with high efficiency and economy has become a hot issue for scholars. Among them, the anaerobic ammonium oxidation process is favored by most scholars because of its high efficiency, economy and good energy-saving e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/34C02F3/28C02F11/04C02F101/16C02F101/30
CPCC02F3/28C02F3/34C02F11/04C02F2101/16C02F2101/30C02F2203/006C02F2303/06
Inventor 彭永臻李雅楠石亮亮张琼
Owner BEIJING UNIV OF TECH
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