A jet tube membrane bioreactor

Abstract

The invention discloses an injection pipe type membrane biological reaction device. A stock solution supply tank is communicated with the bottom of the side wall of an up-flow type biological fluidized bed reactor through a pipeline, and wastewater flows in the up-flow type biological fluidized bed reactor from bottom to top and overflows to enter an overflow sedimentation tank through a granular active carbon interlayer. The overflow sedimentation tank is communicated with a membrane bioreactor through a pipeline, a suction pump is mounted on the pipeline between the overflow sedimentation tank and the membrane bioreactor, and a permeation water outlet pipeline extends out of the membrane bioreactor to connect with a permeation storage tank through a peristaltic pump. A membrane biological component adopting an ejector for aeration is provided to make efficient use of natural air so as to reduce operation energy consumption, water speed is increased for lowering nearby air pressure of water flow, then air is sucked in to form air-liquid mixed flow, the air-liquid mixed flow is ejected to form a highly-mixed high-disturbance environment so as to retard internal membrane pollution, water quality is effectively improved, and the service life of the membrane component is prolonged. In addition, low energy consumption in operation is guaranteed, and environment friendliness and cost reduction are realized.

Description

technical field [0001] The invention belongs to the technical field of waste water treatment, and in particular relates to a spray tube type membrane biological reaction device. Background technique [0002] In recent years, with the development of China's economy and the rapid increase of population, the shortage of water resources has become a huge problem that threatens the survival of human beings in China and even in the whole world. According to statistics, my country's population accounts for 22% of the world's, fresh water resources are only 7% of the world's, and the per capita water supply is only 1 / 4 of the world's per capita share. Every year in my country, grain production is reduced due to water shortage, resulting in huge economic losses. The shortage of water resources seriously restricts the speed of economic development. On the other hand, urban and industrial wastewater produced by social development is directly discharged into the water environment, whic...

AI Technical Summary

Problems solved by technology

However, the existing membrane bioreactors still have certain deficiencies in operation, such as high membrane cost, easy membrane fouling, and high energy consumption in operation. Regarding how to reduce membrane fouling and reduce energy consumption of the reactor at the same time, realize There is still huge research potential for efficient reuse of membranes and low-energy operation

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