An anaerobic sewage treatment device and process

Abstract

The invention discloses an anaerobic sewage treatment device and an anaerobic sewage treatment process. The anaerobic sewage treatment process includes inoculating anaerobic digestion sludge and anaerobic ammonium oxidation sludge into an anaerobic membrane bioreactor and an anaerobic ammonium oxidation reactor; allowing wastewater to sequentially flow through the anaerobic membrane bioreactor, a denitrification reactor and the anaerobic ammonium oxidation reactor, then draining water and allowing a part of water to flow back to the denitrification reactor. The anaerobic sewage treatment device and the anaerobic sewage treatment process have the advantages that biogas energy can be recycled by the anaerobic membrane bioreactor, organic pollutants can be removed by the anaerobic membrane bioreactor, effects of removing nitrogen by denitrification and pre-selecting floras can be realized by the denitrification reactor, total nitrogen can be removed by an anaerobic ammonium oxidation pond, and the nitrogen removal aeration quantities can be effectively reduced by the anaerobic ammonium oxidation pond; the anaerobic sewage treatment device and the anaerobic sewage treatment process can be used for high-concentration organic wastewater, and accordingly the purposes of reaching mainly anaerobic carbon-nitrogen standards and recycling biogas can be achieved; the anaerobic sewage treatment device and the anaerobic sewage treatment process also can be used for treating low-concentration organic wastewater, and accordingly the aeration quantities required in treatment procedures can be reduced to a great extent.

Description

technical field [0001] The invention relates to the technical fields of wastewater treatment and new energy, in particular to an anaerobic sewage treatment device and process. Background technique [0002] According to the Yearbook of the National Bureau of Statistics of China in 2015, as a kind of high-concentration organic wastewater, agricultural and sideline food processing wastewater discharged 11% of oxygen-consuming organic pollutants (COD Cr ), which is typical. Wastewater from the agricultural and sideline food processing industry has high pollutant concentration, large discharge volume and low compliance discharge rate, and the potential for pollution reduction and resource utilization is huge. According to the national survey of pollution sources, in 2010, the waste water discharge of agricultural and sideline food processing industry (including corn processing, livestock and poultry breeding, etc.) was 13.2×10 8 t, ranked 4th among 41 classified industries, whi...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a combined process device and method with anaerobic membrane biological reaction and anammox as the core, to solve the problem of a large amount of aeration in the existing conventional treatment process, and to solve the problem of existing anaerobic membrane biological reaction The effluent ammonia nitrogen does not meet the standard, the requirement of anaerobic ammonium oxidation is high, and the nitrate nitrogen residue in the effluent is difficult to meet the standard. A high-concentration organic wastewater treatment process with anaerobic technology as the core is formed.

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