Method and device for realizing heterotrophic and autotrophic coupling advanced denitrification synchronous sludge reduction in AOA-SBR

A technology for deep denitrification and sludge reduction, applied in the adjustment methods of biological treatment, biological sludge treatment, chemical instruments and methods, etc. And other issues

Pending Publication Date: 2019-06-21
BEIJING UNIV OF TECH
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  • Application Information

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Problems solved by technology

However, the lack of carbon sources in urban sewage limits the application of traditional biological denitrification processes.
At the same time, sewage treatment plants will inevitably produce a large amount of excess sludge, and the treatment and disposal of excess sludge is also a major problem

Method used

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  • Method and device for realizing heterotrophic and autotrophic coupling advanced denitrification synchronous sludge reduction in AOA-SBR
  • Method and device for realizing heterotrophic and autotrophic coupling advanced denitrification synchronous sludge reduction in AOA-SBR
  • Method and device for realizing heterotrophic and autotrophic coupling advanced denitrification synchronous sludge reduction in AOA-SBR

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Embodiment Construction

[0020] The patent application is further described in conjunction with accompanying drawings and examples: as figure 1 As shown, the present invention includes an excess sludge fermentation tank, a sludge fermentation mixture storage tank, a sewage water tank, and a sequencing batch reactor SBR. The effective volumes of the four devices are 5L, 3L, 30L, and 12L respectively, in which the excess sludge fermentation tank, sludge fermentation mixture storage tank and sequencing batch reactor SBR are made of plexiglass.

[0021] The device comprises that the excess sludge is pumped into the excess sludge fermentation tank (2) through the first pump peristaltic pump (1), and the first agitator (3) and a temperature control device (4) are installed in the excess sludge fermentation tank (2). , the first pH controller (5); the excess sludge fermentation tank (2) is connected with the fermentation mixture storage tank (9), and the fermentation mixture storage tank (9) is connected to ...

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Abstract

The invention relates to a method and device for realizing heterotrophic and autotrophic coupling advanced denitrification synchronous sludge reduction in AOA-SBR, which belong to the field of urban sewage treatment and sludge biochemical treatment.The method comprises the following steps: allowing urban sewage and sludge leavening mixture to simultaneously enter into an AOA-SBR reactor; converting organic matter in domestic sewage and sludge leavening in an anaerobic zone into PHA and storing inside; converting ammonia nitrogen in an aerobic zone into nitrite nitrogen under the action of partial nitrification; carrying out anaerobic ammonia oxidation with residual ammonia nitrogen and nitrite nitrogen in an anoxic zone, and carrying out denitrification at the same time to reduce residualnitrite nitrogen and nitrate nitrogen generated from anaerobic ammonia oxidation into nitrogen, so as to complete advanced nitrogen removal. According to the invention, the AOA-SBR operation manner isadopted to realize mixed treatment of residual sludge leavening and domestic sewage to achieve low C / N ratio advanced nitrogen removal through partial nitrification anaerobic ammonia oxidation and denitrification, as well as reduction treatment of sludge at the same time.

Description

technical field [0001] The invention relates to the optimization control of a method and a device for realizing heterotrophic and autotrophic coupled deep denitrification synchronous sludge reduction in an AOA-SBR, and belongs to the fields of urban sewage treatment and sludge biochemical treatment. This process is suitable for strengthening the deep denitrification of low C / N urban domestic sewage. Background technique [0002] Biological denitrification technology is widely used in urban domestic sewage treatment plants. However, the lack of carbon sources in urban sewage limits the application of traditional biological denitrification processes. At the same time, sewage treatment plants will inevitably produce a large amount of excess sludge, and the treatment and disposal of excess sludge is also a major problem. Residual sludge is the material produced during the biological treatment of sewage, and its main organic components are protein, carbohydrates and fat. The a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30C02F3/12C02F11/02C02F101/16C02F101/10
CPCC02F3/006C02F3/1263C02F3/302C02F3/307C02F2209/005C02F2209/02C02F2209/06C02F2209/22C02F2303/06Y02W10/10C02F3/1284C02F3/282C02F9/00C02F11/02C02F2209/006
Inventor 彭永臻刘瑾瑾邱圣杰夏杨张琼
Owner BEIJING UNIV OF TECH
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