Combined sewage treating process and apparatus

Abstract

The sewage treating process uses the residual kinetic energy of the sewage after jet aeration as the driving power to rotate the biological turnplate to realize the sewage treatment. The embodiment includes biological turnplate, tank, rotating wheel and jet ejector, the biological turnplate and the rotating wheel are mounted inside the tank, the turnplate is connected via the rotation mechanism to the shaft, and the jet ejector is set opposite to the rotating wheel and connected to the sewage pump. The present invention can realize jet aeration, sewage sucking and residual energy driving of the biological turnplate and thus has high sewage treating efficiency, powerful resistance to impact load, good mud depositing performance, low power consumption and low running cost.

Description

technical field [0001] The invention relates to a sewage treatment technology, in particular to a combined sewage treatment process integrating jet aeration and driving a biological turntable (drum) and its device. Background technique [0002] The biological turntable sewage treatment process is one of the existing sewage biological treatment processes. The traditional biological turntable or biological rotary drum is composed of multiple rotating discs or cylinders with small mutual distances fixed on the horizontal axis. They all use the motor to drive the disc or cylinder to rotate continuously, so that the biofilm growing on the disc or cylinder and the filler is alternately in contact with the sewage and the atmosphere, and the organic pollutants in the sewage are adsorbed on the disc or In the cylinder, it is oxidized and decomposed under the action of aerobic microorganisms (ie biofilm), so as to achieve the purpose of purifying sewage. (drum...

AI Technical Summary

Problems solved by technology

However, the above-mentioned treatment devices and processes only rely on the continuous rotation of the disc or cylinder to contact the sewage with the atmosphere, and do not take measures to increase the oxygen content in the water. Therefore, odors are often produced due to insufficient dissolved oxygen in the water, which is harmful to the sewage. The treatment effect has adverse effects, which also limits the application of this sewage treatment process

In the Chinese invention patent with the patent number of 90105136.5, a "hydrodynamic biological turntable multi-stage biological treatment sewage process" is also disclosed. The power makes the biological turntable rotate; this process can improve the oxygenation capacity and increase the purification function, and at the same time can save power and reduce the cost of sewage treatment; but this kind of treatment process that uses the weight of sewage to drive the biological turntable has great limitations. , because the sewage needs to be lifted to a higher position to make it have enough potential energy, which is inconvenient to implement, and the oxygenation effect of this sewage treatment process also needs to be improved

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