Device for anaerobic removal of organic matters in municipal sewage and denitrification of autotrophic organism and method

Abstract

The invention relates to a device for anaerobic removal of organic matters in municipal sewage and denitrification of autotrophic organism and a method. The device is provided with an original water tank, an anaerobic reactor, a dephosphorization reactor, an intermediate sedimentation tank, a semi-short distance nitration reactor, a secondary sedimentation tank, an intermediate water tank and an anaerobic ammonium oxidation reactor; wherein, the anaerobic reactor is an anaerobic biological filter filled with sponge fillers; a first grid chamber of the dephosphorization reactor is an anaerobic area, and the other four grid chambers are aerobic areas; the semi-short distance nitration reactor is provided with one anoxic area and four aerobic areas; the anaerobic ammonium oxidation reactor is provided with a columnar reactant and a water bath sleeve. The method utilizing the device comprises: 1) activated sludge obtained from a sewage treatment plant is put into the dephosphorization reactor and the semi-short distance nitration reactor; 2) the municipal sewage is firstly pumped into the anaerobic reactor; 3) the water output by the anaerobic reactor enters the dephosphorization reactor; 4) the water output by the dephosphorization reactor enters the semi-short distance nitration reactor through the intermediate sedimentation tank. The invention is applicable to municipal sewage treatment, and has the advantages of complete structure, advanced technique and high efficiency.

Description

technical field [0001] The invention relates to a biochemical sewage biological treatment technology, in particular to an urban sewage treatment device and method for removing organic matter and autotrophic biological denitrification through anaerobic methanogenesis, and is suitable for secondary treatment and regeneration of urban sewage. Background technique [0002] my country's water pollution continues to intensify, and the shortage of water resources has restricted the development of the economy and society. Therefore, the discharge standards of urban sewage plants have been continuously improved, and the recycling and reuse of sewage has become the general trend. The oxidation of organic matter (COD) and nitrification of ammonia nitrogen in the traditional sewage biological treatment process consume energy due to the need for aeration, and a large amount of chemical energy is lost in the process of oxidizing COD, resulting in a large amount of CO 2 released into the a...

AI Technical Summary

Problems solved by technology

[0006] Considering the status quo of urban sewage treatment and the characteristics of anaerobic methanogenesis and autotrophic biological denitrification, if the organic matter in urban sewage can be removed through anaerobic methanogenesis, and then the nitrogen in sewage can be removed through autotrophic biological denitrification, it can be achieved High-efficiency and low-consumption treatment of urban sewage, while significantly reducing excess sludge and CO 2 discharge, so far, there is still no urban sewage biological treatment technology that can achieve the above goals in the world

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