Denitrification sewage treatment device with high emission standard and low carbon nitrogen ratio

Abstract

The invention discloses a denitrification sewage treatment device with high emission standard and low carbon nitrogen ratio. The device comprises a tank shell. The outer wall of one side of the tank shell is provided with an air compressor and a self-priming pump, and the air compressor is connected with an exposure module and sludge treatment modules through a pipeline. The inside of the tank shell is divided into a filter bin, an aeration fluidizing bin and a homogenizing bin, and the inner wall of the homogenizing bin is provided with a homogenizing tank. The two sludge treatment modules are arranged in the aeration fluidizing bin, and the other two sludge treatment modules are disposed inside the filter bin. By the technology of combining a fixed bed bioreactor, an obligate oligonitrophilic bacteria and an MBR biological ultrafilter, and by a directional separation technology, mud samples are collected at the construction site and are screened and cultivated in a laboratory. The low-carbon-source denitrification effect is greatly enhanced. Clay ceramsite which is cheap and easily available is used as a filler for domestic sewage treatment. The device can be designed to be movable and integrated. Thus, land occupation of the equipment is small, investment is saved, and unattended operation can be achieved.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a sewage treatment device with high discharge standard and low carbon-to-nitrogen ratio denitrification. Background technique [0002] Offshore pollution and frequent red tides have caused disastrous consequences. In order to prevent and control marine red tides, relevant state departments organized and implemented red tide monitoring and early warning and disaster prevention and mitigation demonstration projects in key sea areas, and strengthened red tide information management and sewage discharge control. Water-like standards can be discharged into the sea. Studies have shown that the cause of red tides, ammonia nitrogen and phosphorus are one of the important causes of pollution. Therefore, how to economically and effectively control the pollution of ammonia nitrogen wastewater has become an important research topic for environmental protection workers. At present...

AI Technical Summary

Problems solved by technology

Considering the operating cost, the biological method is the lowest, followed by the physical method. When the pollutants in the sewage cannot be degraded by biological methods and cannot be removed by physical methods, chemical methods are used. The operating cost of the latter is much higher than that of the former.

[0003] The existing denitrification sewage treatment has the following deficiencies: 1. Strictly speaking, the denitrification mechanism is still based on the traditional nitrification / denitrification theory, which only saves 40% of the carbon source required for denitrification, which means means an additional 60% carbon source is required

Moreover, it is difficult to control the choice of carbon source and the amount of addition; adding more COD exceeds the standard, adding less NH3-N exceeds the standard, and at the same time increases operating costs; The shortcomings and shortcomings of the nitrification process have long been known to everyone. The theory is very profound, the actual operation is very cumbersome, and the reflux ratio is difficult to control.

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