Efficient biological decarburization and denitrification method and system

Abstract

The invention relates to an efficient biological decarburization and denitrification method and system. The system comprises a PEIC anaerobic reactor, an alkali liquor spraying device, an aerobic tank, a sedimentation tank and an efficient denitrification device, wherein a gas outlet of the PEIC anaerobic reactor is connected with the alkali liquor spraying device, a liquid outlet of the alkali liquor spraying device is connected with the efficient denitrification device, a liquid outlet of the PEIC anaerobic reactor is connected with the aerobic tank, an outlet of the aerobic tank is connected with the sedimentation tank, and a liquid outlet of the sedimentation tank is connected with the efficient denitrification device. The system has the advantages that the COD value of effluent is reduced, nitrogen content is lowered, and overall sludge yield is reduced.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to an efficient biological decarbonization and nitrogen removal method and system. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] The standards for sewage treatment have higher or stricter requirements on total COD, total nitrogen and total phosphorus. The results of sewage treatment have a direct impact on the environment. With the deepening of awareness of environmental protection, the country's policies in this area are becoming increasingly strict. As the pressure to remove total nitrogen pollutants in sewage increases, the amount of carbon source t...

AI Technical Summary

Problems solved by technology

For the removal of total nitrogen pollutants in sewage, the pressure becomes larger, and the amount of carbon source that needs to be supplemented per ton of waste water also gradually increases, which increases the cost of operation

At the same time, conventional biochemical methods have limited processing accuracy and are difficult to meet the increasingly stringent national emission standards

[0004] If the main treatment is carried out for a certain characteristic pollution factor, it will cause a large waste of resources and lead to high operating costs and disposal costs

[0005] The existing sewage treatment device occupies a large area and produces a large amount of sludge. In addition to sewage treatment, the disposal cost of degradation is increased

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