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Anaerobic membrane bioreactor and organic sewage treatment method

A technology of anaerobic membrane biology and organic sewage, applied in the field of sewage treatment, can solve the problems of membrane pollution, low, need to configure biogas recovery and pressurization equipment, destroy sludge particles, etc., to achieve simple cleaning and maintenance, excellent solid-liquid Separation effect, the effect of low energy consumption in operation

Pending Publication Date: 2022-04-01
碧水源膜技术研究中心(北京)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The side flow configuration operation is beneficial to control the filter cake layer pollution on the surface of the membrane, easy to monitor and clean and maintain, but the high hydraulic shear force provided by the circulating pump may destroy the sludge particles and cause membrane fouling; the cross flow of the submerged configuration operation The speed is relatively low, and biogas recovery and pressurization equipment need to be configured. The liquid entrained by the released air bubbles forms a cross flow from the lower part of the membrane module along the membrane surface. For the external submerged type, a sludge return system needs to be configured

Method used

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  • Anaerobic membrane bioreactor and organic sewage treatment method
  • Anaerobic membrane bioreactor and organic sewage treatment method
  • Anaerobic membrane bioreactor and organic sewage treatment method

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Embodiment 1

[0080] The present embodiment provides a method for organic sewage treatment, which specifically includes the following steps:

[0081] (A) The organic sewage to be treated enters the water inlet pipe 2 after being boosted by the lift pump 21, and enters the sludge bed in the first anaerobic zone through the conical reflector, and the macromolecular organic pollutants in the organic sewage are absorbed by the sludge bed. The hydrolytic acidifying bacteria decompose into small molecules, which are further decomposed by methanogenic bacteria to obtain biogas and mud-water mixture; among them, the temperature of the first anaerobic zone is 25°C, the pH value is 7.2, and the rising flow rate of mud-water mixture is 0.5 m / h, the average sludge concentration in the first anaerobic zone is 15g / L.

[0082] (B) The biogas enters the three-phase separation zone, is collected by the three-phase separator 3 and enters the degassing equipment through the exhaust pipe 31 for further process...

Embodiment 2

[0084] The present embodiment provides a method for organic sewage treatment, which specifically includes the following steps:

[0085] (A) The organic sewage to be treated enters the water inlet pipe 2 after being boosted by the lift pump 21, and enters the sludge bed in the first anaerobic zone through the conical reflector, and the macromolecular organic pollutants in the organic sewage are absorbed by the sludge bed. The hydrolytic acidifying bacteria decompose into small molecules, which are further decomposed by methanogenic bacteria to obtain biogas and mud-water mixture; among them, the temperature of the first anaerobic zone is 30°C, the pH value is 7.6, and the rising flow rate of mud-water mixture is 0.8 m / h, the average sludge concentration in the first anaerobic zone is 20g / L.

[0086] (B) The biogas enters the three-phase separation zone, is collected by the three-phase separator 3 and enters the degassing equipment through the exhaust pipe 31 for further process...

Embodiment 3

[0088] The present embodiment provides a method for organic sewage treatment, which specifically includes the following steps:

[0089] (A) The organic sewage to be treated enters the water inlet pipe 2 after being boosted by the lift pump 21, and enters the sludge bed in the first anaerobic zone through the conical reflector, and the macromolecular organic pollutants in the organic sewage are absorbed by the sludge bed. The hydrolytic acidifying bacteria decompose into small molecules, which are further decomposed by methanogenic bacteria to obtain biogas and mud-water mixture; among them, the temperature of the first anaerobic zone is 35°C, the pH value is 8.0, and the rising flow rate of mud-water mixture is 1.0 m / h, the average sludge concentration in the first anaerobic zone is 25g / L.

[0090] (B) The biogas enters the three-phase separation zone, is collected by the three-phase separator 3 and enters the degassing equipment through the exhaust pipe 31 for further process...

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Abstract

The invention relates to the technical field of sewage treatment, in particular to an anaerobic membrane bioreactor and an organic sewage treatment method. The anaerobic membrane bioreactor comprises a closed shell, and a first anaerobic zone, a three-phase separation zone and a second anaerobic zone which are sequentially arranged in the shell from bottom to top, the first anaerobic zone comprises a sludge bed arranged at the bottom of the shell; the three-phase separation area comprises at least two rows of three-phase separators which are arranged up and down; and the second anaerobic zone is provided with at least one AnMBR membrane module device. According to the anaerobic membrane bioreactor disclosed by the invention, the AnMBR is introduced, and the structure of the anaerobic membrane bioreactor is further optimized, so that the problems of sludge loss, low treatment volume load and relatively poor effluent quality are effectively solved.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to an anaerobic membrane bioreactor and a method for treating organic sewage. Background technique [0002] AnMBR (Anaerobic Membrane Bioractor) is a sewage treatment process that effectively combines anaerobic treatment technology and membrane technology. Compared with aerobic wastewater treatment technology, AnMBR process can effectively control CO 2 、CH 4 、H 2 Greenhouse gas emissions such as S greenhouse gases, while having less sludge production; Compared with aerobic biofilm reactors, AnMBR has a smaller footprint, longer solid retention time (SRT), and hydraulic retention time (HRT) Shorter; compared with traditional anaerobic reactors (eg, UASB, CSTR, AF, etc.), AnMBR favors the proliferation of slow-growing methanogens and can achieve higher bioenergy production. [0003] In terms of membrane module and reactor design, AnMBR can be divided into two configuration...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/28C02F101/30
Inventor 陈亦力张颖刘涛沈国陈弘仁孙广东韩兴亮任笑石孟繁龙岳磊牛和昕熊晓励
Owner 碧水源膜技术研究中心(北京)有限公司
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