Gas stripping internal circulation membrane tank

A technology of internal circulation and membrane tank, which is applied in the direction of special treatment targets, water/sludge/sewage treatment, biological water/sewage treatment, etc., can solve the problems of large footprint and high treatment cost, and achieve small footprint, Improve the B/C ratio and the effect of better structural stress

Pending Publication Date: 2022-01-07
杭州永湛环境科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an air-lift internal circulation membrane tank with mature technology, reliability, good operation stability, high treatment efficiency, good effect, less land occupation, low investment and low operating cost, which solves the problem of traditional MBR membrane There are problems in the technology, such as the natural release of a large amount of aeration gas, the high processing cost caused by the return flow through the return pump, and the large area occupied.

Method used

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Embodiment 1

[0035] This embodiment provides an air lift internal circulation membrane tank, combined with A 2 / O-MBR film process or its improved process, etc., its structure is as follows figure 1 , 2 As shown in , 3, a circular tank is used as the reactor, and the inner and outer cylinders are set. The inner cylinder is an aerobic unit 3, the outer cylinder is an anaerobic unit 1 and anoxic unit 2, and the inner cylinder is placed with an MBR membrane stack 4, and the membrane stack A gas collection hood 5 is installed on the top surface, and a backwash water tank 7 and an air lift return water tank 6 are installed above the gas collection hood 5. The MBR membrane stack 4 sucks the water out into the backwash water tank 7 through the negative pressure of the suction pump, and the gas collection hood 5 collects the MBR membrane. Stack 4 scours a large amount of air for aeration, and uses the principle of air lift (the density difference of air-water mixture) to lift the nitrifying liqui...

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Abstract

The invention discloses a gas stripping internal circulation membrane tank. A circular tank body with an inner cylinder and an outer cylinder is adopted as a reactor, an anaerobic unit is arranged at the upper part of the outer cylinder, an anoxic unit is arranged below the anaerobic unit in the outer cylinder, an aerobic unit is arranged in the inner cylinder, the aerobic unit communicates with the anoxic unit, an MBR membrane stack is placed in the inner cylinder, and a gas collecting hood is arranged at the top of the MBR membrane stack; and a backwashing water tank and a gas stripping backflow water tank are arranged above the circular tank body, the gas stripping backflow water tank is connected with the gas collecting hood through a pipeline, backflow water of the gas stripping backflow water tank is connected with the anaerobic unit, and the backwashing water tank is connected with effluent of the MBR membrane stack through a suction pump and a pipeline. The problems of high treatment cost, large occupied area and the like caused by natural release of a large amount of aeration gas and backflow through a backflow pump in a traditional MBR membrane technology are solved, aeration resources are fully utilized, aeration air is collected, gas stripping backflow is performed, and energy consumption is reduced; and in addition, the occupied area is small, and the large advantages are achieved in integration and modularization application.

Description

technical field [0001] The invention relates to a complete set of waste water treatment equipment, in particular to an air lift internal circulation membrane tank. Background technique [0002] With the continuous improvement of my country's water environment quality requirements, the discharge standards are becoming more and more stringent for the treatment of industrial wastewater and domestic sewage, and there is an urgent need for the support of corresponding advanced treatment technologies. At present, membrane bioreactor (MBR) The process is widely used in domestic sewage, difficult organic wastewater and other fields. [0003] The MBR process is a new type of high-efficiency sewage treatment process that combines membrane separation technology with traditional biological treatment technology. It uses membrane separation technology to intercept the activated sludge and macromolecular organic substances in the biological reaction tank, replacing the traditional two. The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30
CPCC02F3/302C02F2303/14C02F2303/16C02F2203/006
Inventor 陈永飞
Owner 杭州永湛环境科技有限公司
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