Wastewater treatment technique for pressurization static bed biomembrane reactor

Abstract

The invention discloses a sewage treatment process using pressurized aeration in a closed fixed-bed biofilm reactor. The sewage treatment process reactor is composed of the main body of the reactor and the pressure control and adjustment system. It is characterized by a buffer zone, a supporting filter plate water distribution and gas distribution system, a particle packing layer, a clear water area, and a pressure air area from bottom to top. and a gas-water separator connected by pipelines; a supporting filter plate water distribution and gas distribution system is provided between the buffer zone and the granular packing layer; the gas-water separator is connected to the clean water area through pipelines; it is installed in the pressure air area for The pressure control and adjustment system that displays and controls the air pressure can automatically and dynamically adjust the speed of the air compressor so that the air volume and pressure supplied just meet the operating setting requirements. The sewage treatment process of the pressurized fixed-bed biofilm reactor can significantly improve the sewage (waste) water treatment efficiency, and has great application value in the sewage treatment application.

Description

technical field [0001] The invention relates to a sewage treatment process using pressurized (non-pressure) aeration operation in a closed fixed-bed biofilm reactor, which can treat domestic sewage and organic industrial wastewater to reuse or discharge standards. Background technique [0002] Domestic sewage and organic industrial wastewater are the main factors leading to water pollution in my country. The amount of such sewage (waste) water is large and scattered. The organic pollutants and nitrogen elements mainly contained in sewage (waste) water will be oxidized and decomposed after being discharged into surface water bodies. , During the decomposition process, a large amount of dissolved oxygen in the water body is consumed, and eventually the water body is hypoxic, so that aquatic animals such as fish living in the water body cannot breathe and die. At the same time, the foul-smelling gas makes the water body smelly and black, which deteriorates the environmental condi...

AI Technical Summary

Problems solved by technology

Because the weight ratio of oxygen in the air component is 21%, and the air is blown in from the blower and released into small bubbles through the aerator until the bubbles rise to the liquid surface and burst, the oxygen in the bubbles is transferred to the sewage. 5% of the air weight, and the oxygen accounting for about 16% of the air weight is not used and returned to the atmosphere, so that the transfer efficiency of oxygen to the sewage is not high. On the one hand, the oxygen in the air is not fully utilized. To achieve a certain treatment effect, it is necessary to increase the supply of oxygen, thereby increasing energy consumption; on the other hand, because the rate of aerobic biological reaction is limited by the concentration of dissolved oxygen in the sewage, the organic load and biodegradation efficiency of the reactor are not high, which leads to the Huge system, increased investment and operating costs

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