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Integrated sewage treatment device of membrane bioreactor and sewage treatment method

A membrane bioreactor, sewage treatment device technology, applied in the direction of aerobic and anaerobic process treatment, can solve the problems of large area, high operation cost, unstable sewage treatment quality, etc., to achieve the effect of optimizing denitrification

Inactive Publication Date: 2013-03-13
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a membrane bioreactor integrated sewage treatment device in order to solve the problems of large floor area, high operating cost, complicated operation management and unstable sewage treatment quality in the existing sewage treatment process and equipment and sewage treatment methods

Method used

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  • Integrated sewage treatment device of membrane bioreactor and sewage treatment method
  • Integrated sewage treatment device of membrane bioreactor and sewage treatment method

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specific Embodiment approach 1

[0018] Embodiment 1: A membrane bioreactor integrated sewage treatment device according to this embodiment, which includes: sewage lifting pump 1, mixing adjustment tank 2, constant level water tank 3, integrated membrane bioreactor 4, suction pump 5. Outlet water tank 6, backwash water pump 7, blower 8, three-phase separator 9, membrane module 10, perforated aeration device 11, stirring device 12, dosing tank 14, chemical pump 15, return pump 16, sludge discharge valve 17. Liquid flow meter 18 and gas flow meter 19; the water outlet of the sewage lifting pump 1 is connected with the water inlet on the upper part of the mixing adjustment tank 2 through the liquid flow meter 18, and the water outlet at the bottom of the mixing adjustment tank 2 is connected to the constant level water tank The water inlet at the top of 3 is connected, and the water outlet at the bottom of the constant level water tank 3 is connected with the water inlet at the top of the integrated membrane bior...

specific Embodiment approach 2

[0021] Embodiment 2: This embodiment differs from Embodiment 1 in that: the three-phase separator 9 divides the integrated membrane bioreactor 4 into two parts, the upper part and the lower part, with a volume ratio of 1:1-4. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0022] Specific implementation mode three: a sewage treatment method using a membrane bioreactor integrated sewage treatment device in this embodiment is carried out according to the following steps:

[0023] 1. Inoculate the sludge into the integrated membrane bioreactor 4, and then the sewage to be treated is pumped into the mixing adjustment tank 2 through the sewage lifting pump 1, and flows into the constant level water tank 3 from the bottom of the mixing adjustment tank 2; through the liquid flow meter 18. Control the flow of the sewage to be treated into the mixing adjustment tank 2, wherein the concentration of the sludge is 2-10g / L;

[0024] Two, the three-phase separator 9 divides the integrated membrane bioreactor 4 into two parts, the upper part and the lower part, step 1. The sewage in the constant level water tank 3 enters the upper part of the integrated membrane bioreactor 4, and then passes through the three-phase separator 9 The slit enters the lower part of...

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Abstract

Relating to sewage treatment devices and sewage treatment methods, the invention provides an integrated sewage treatment device of a membrane bioreactor and a sewage treatment method. The invention aims to solve the problems of large land occupation area, high operation cost, complex operation management, unstable effluent quality and the like in existing sewage treatment technologies and devices. In the invention, a three-phase separator component is arranged inside a membrane bioreactor, and by means of bottom aeration and the separation effect of the separator, an integrated device with an anoxic upper part and an aerobic lower part can be formed. Sewage enters from the upper anoxic area of the reactor, and then enters the lower aerobic area through a slit of the three-phase separator. Meanwhile, a mixed solution backflow device is disposed to return a mixed solution in the aerobic area to the anoxic area, thus finishing nitrogen removal treatment of the sewage. The sewage treatment device and method provided in the invention can realize synchronous nitrogen removal and decarbonization, and have the advantages of small land occupation area, saving of sewage treatment required alkalinity and engineering cost, as well as simple operation management. And the sewage treatment device and method of the invention can be applied in treatment of urban sewage or nitrogen-containing industrial wastewater.

Description

technical field [0001] The invention relates to a sewage treatment device and a sewage treatment method. Background technique [0002] The 21st century is the era of membrane science and technology. At present, in the field of sewage treatment, membrane technology, especially membrane bioreactor technology, has received widespread attention. The membrane can efficiently intercept the biomass in the reactor and replace the role of the secondary sedimentation tank in the sewage plant to reduce the occupied area; it can separate the hydraulic residence time and the sludge residence time in the biochemical reactor, improve the biochemical efficiency of sewage, and reduce the effluent The turbidity and the number of coliform bacteria can improve the quality of effluent water; the system can realize the whole process of automatic control, and the operation and management are convenient. Therefore, it has become a trend to develop new membrane bioreactors to efficiently treat urb...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/30
Inventor 李圭白丁安梁恒韩正双王美莲
Owner HARBIN INST OF TECH
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