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A device and method for strengthening autotrophic denitrification of urban domestic sewage

A technology for urban domestic sewage and autotrophic denitrification, which is applied in the denitrification treatment of urban domestic sewage; in the field, it can solve the problems of low denitrification efficiency and difficulty in reaching the effluent standard, so as to save carbon sources, low operating costs, and save exposure. The effect of air volume

Active Publication Date: 2021-08-13
BEIJING UNIV OF TECH
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Problems solved by technology

[0004] Among them, the difficulty of nitrogen and phosphorus removal lies in the removal of nitrogen, which is economical and effective enough for chemical phosphorus removal, but for the removal of nitrogen in urban sewage, because the degradable COD in the water is often insufficient, the efficiency of nitrogen removal is not high. The final effluent is difficult to meet the standard

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  • A device and method for strengthening autotrophic denitrification of urban domestic sewage
  • A device and method for strengthening autotrophic denitrification of urban domestic sewage
  • A device and method for strengthening autotrophic denitrification of urban domestic sewage

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Embodiment Construction

[0030] A device for strengthening the autotrophic denitrification of urban domestic sewage, characterized in that: the urban domestic sewage raw water tank (29), the urban domestic sewage short-range nitrification anaerobic ammonium oxidation integrated reactor, the sludge digestion supernatant raw water tank ( 30), composed of a short-range nitrification anaerobic ammonium oxidation integrated reactor for sludge digestion supernatant and two sets of sludge return devices;

[0031] The short-path nitrification and anammox integrated reactor for urban domestic sewage includes a first stirrer (7), a first stirring paddle (11), a first aeration head (9), a first DO probe (16), and a first pH Probe (17), first water quality analyzer (14), first flow meter (6), first aeration pump (4), urban domestic sewage outlet valve (3), urban domestic sewage outlet pump (4) and other devices ;

[0032] The sludge digestion supernatant short-path nitrification anammox integrated reactor includes...

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Abstract

A device and method for strengthening autotrophic denitrification of urban domestic sewage belongs to the field of urban domestic sewage treatment. The device is mainly composed of urban domestic sewage raw water tank, urban domestic sewage short-course nitrification anaerobic ammonium oxidation integrated reactor, sludge digestion supernatant raw water tank, sludge digestion supernatant short-course nitrification anaerobic ammonium oxidation integrated reactor, Composition of sludge return device. The method is to use sludge digestion supernatant with high free ammonia and control reaction conditions to inhibit nitrite oxidizing bacteria under low dissolved oxygen (DO) conditions, and then return the sludge in the high free ammonia system through a sludge return device To the urban domestic sewage reactor, and through the control of DO to ensure the stable operation of the short-range nitrification and anammox integration of urban domestic sewage. The device has simple structure, convenient operation, short-cut nitrification saves aeration, anaerobic ammonium oxidation saves carbon source, and the sludge output is low, reducing treatment costs.

Description

technical field [0001] A device and method for strengthening autotrophic denitrification of urban domestic sewage related to the present invention belongs to the field of urban domestic biological treatment, and is suitable for denitrification treatment of urban domestic sewage with a low carbon-to-nitrogen ratio; Background technique [0002] With the rapid development of my country's economy and the rapid progress of the times, people's living environment standards have also been improved accordingly. In the past, the requirements for sewage were only to remove COD in sewage, but in recent years "water eutrophication" The problem has aroused widespread concern and discussion in the society. The reason is that the N and P nutrients in the water body exceed the standard, so the denitrification and phosphorus removal of sewage is particularly important. [0003] The removal of N and P in sewage is a difficult and hot spot in the research of this industry. The emerging short-ra...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/30C02F101/16
CPCC02F3/301C02F3/303C02F3/307C02F2101/16C02F2301/046
Inventor 彭永臻陈建飞张建华张亮孙雅雯王淑莹
Owner BEIJING UNIV OF TECH
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