Method for starting nitric oxide biological absorption tower by spherical non-woven fabric filling

Abstract

The invention belongs to the technical field of biological treatment of waste gas and relates to a spherical non-woven fabric filling started tower type anaerobic ammonia oxidation reactor. Filling is of an orange-segment-shape-like structure formed by uniformly arraying a framework, formed by modifying an original polyhedron hollow sphere, and a non-woven fabric. The filling is stacked in an absorption tower and is used for carrying out film formation through spraying anaerobic ammonia oxidation bacterium liquid; artificially synthesized ammonia-nitrogen wastewater is sprayed at the upper part; nitric oxide enters from the lower part of the reactor and is in countercurrent contact with liquid to be removed. The spherical non-woven fabric filling started tower type anaerobic ammonia oxidation reactor has the effects and benefits that a liquid film is easily formed by the spherical filling and absorption of gas is facilitated; the non-woven fabric on the filling has a large specific surface area and a coarse surface; the adhesion, growth and reproduction of anaerobic ammonia oxidation bacteria are facilitated; the removing efficiency of the nitric oxide is easy to improve; compared with traditional biological denitration, the reactor is environmentally friendly and has low operation cost; a sustainable treatment technology combining flue gas denitration and sewage denitrification is provided and has relatively good potential application prospect.

Description

technical field [0001] The invention belongs to the technical field of waste gas biological treatment, and relates to a non-woven fabric spherical packing start-up tower-type anammox reactor, in particular to a method for removing nitric oxide in flue gas through anaerobic ammonium oxidation reaction . Background technique [0002] my country has made remarkable progress in pollution control through the "Ninth Five-Year Plan", "Tenth Five-Year Plan", "Eleventh Five-Year Plan" and "Twelfth Five-Year Plan". The deterioration of water pollution has been curbed, but the air pollution situation is becoming more and more serious. Nitrogen oxides (NOx: NO+NO2) are one of the main pollutants that cause air pollution. my country has included NOx reduction as a mandatory assessment index in the "Twelfth Five-Year Plan". Among the existing flue gas denitrification technologies, selective catalytic reduction (SCR) and selective non-catalytic reduction (SNCR) dry denitrification have be...

AI Technical Summary

Problems solved by technology

Among the existing flue gas denitrification technologies, selective catalytic reduction (SCR) and selective non-catalytic reduction (SNCR) dry denitrification have been applied to a certain extent in industry, but both have high investment and operation costs, easy catalyst deactivation, ammonia Disadvantages such as leakage; the feasibility and economy of other denitrification technologies such as plasma method, oxidation (sodium hypochlorite, hydrogen peroxide, etc.) absorption method need to be further studied

Wet biological nitrification and denitrification methods have the advantages of low investment and operation costs, but they require additional carbon sources, which will generate greenhouse gases

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