Two-stage mixing jet aeration treatment system

Abstract

The invention discloses a two-stage mixing jet aeration treatment system. The problems that most existing biochemical aerobic tanks adopt a microporous aeration mode for aeration and oxygenation, themicro-pore aeration air demand is large, the power energy consumption is large, blockage is easily caused, frequent replacement and detection are needed, and much inconvenience is brought to stable operation of the system are solved. The system comprises a jet device main body, a hydraulic mixing injection pipe, a guide cylinder, a conical reflection cap and a base plate. A jetted gas-water mixedliquid is upward along the flow guide cylinder until the mixed liquid is sprayed out of the water level, and the mixed liquid impacts the conical reflection cap, and is uniformly dispersed towards theperiphery of the reflection cap, which is equivalent to the effect of surface aeration, so that the oxygen mass transfer efficiency and rate are further improved; the liquid returning to water body forms a circulating flow on the inner side and the outer side of the flow guide cylinder, so the stirring effect in a tank body is promoted; and the system has the characteristics of small occupied area, simple structure, convenience in installation and maintenance, uniform mixing, uniform oxygen distribution, low energy consumption and the like.

Description

technical field [0001] The invention relates to the technical field of aerobic sewage treatment equipment, in particular to a secondary mixed jet aeration treatment system. Background technique [0002] In the field of sewage treatment, whether it is domestic sewage or industrial wastewater, most of them are organic wastewater. To treat organic wastewater, aerobic biochemical treatment process is widely used because of its efficient and stable treatment effect and low operating cost. The aerobic biochemical treatment of sewage is inseparable from the aeration device. The functions of the aeration device are: to provide enough oxygen to the aerobic biochemical tank to ensure the proliferation and growth of aerobic sludge microorganisms and the efficient oxidation and degradation of organic pollutants; The air also provides a certain stirring and mixing effect to ensure that the sludge is suspended and the oxygen distribution is more uniform. [0003] At present, biochemical ...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that most of the existing biochemical aerobic tanks use the form of microporous aeration for aeration and oxygenation, but the demand for microporous aeration air is large, the power consumption is large, and it is easy to block. Frequent replacement of detection is required, which brings a lot of inconvenience to the stable operation of the system, and a secondary mixed jet aeration treatment system is proposed

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