Treatment process for malodorous gas of municipal wastewater treatment plant

Abstract

The invention discloses a treatment process for malodorous gases of a municipal wastewater treatment plant. The treatment process comprises the following steps: collecting malodorous gases, and carrying out filtering pretreatment; introducing into a photonic titanium catalysis device, and carrying out photonic catalysis treatment; introducing the gases after photonic catalysis treatment into a catalysis purification tower, carrying out catalytic drip washing, and discharging gases. With the combination of photonic catalysis and drip washing, the outer circumference of an ultrasonic lamp tube is covered by a photocatalyst net cover inside the photonic titanium catalysis device to form a photonic titanium catalysis module, so that the malodorous gases fed into the cover sufficiently contactthe inner wall of the photocatalyst net, and thus the photonic catalysis time and routes can be prolonged; in addition, due to adoption of alternatively arranged photonic titanium catalysis modules, specific gas channels can be formed inside the device, so that the photonic catalysis time and gas flowing routes can be also prolonged, the deodorization capability and the sterilization capability ofthe device can be enhanced, and the removal efficiency of hydrogen sulfide, ammonia gases, volatile organic compounds and odor in the malodorous gases can be improved.

Description

technical field [0001] The invention relates to the technical field of malodorous gas treatment, in particular to a process for treating malodorous gas produced by a municipal sewage treatment plant. Background technique [0002] Malodorous gases refer to all gaseous substances that stimulate the olfactory organs and cause people's unpleasant smell and damage the living environment; they can be divided into 5 categories according to their composition: ① Sulfur-containing compounds, such as H 2 S, sulfur dioxide SO 2 , mercaptans, sulfides, etc.; ② nitrogen-containing compounds, such as ammonia, amines, amides, indole, etc.; ③ halogens and derivatives, such as chlorine, halogenated hydrocarbons, etc.; ④ hydrocarbons and aromatic hydrocarbons; ⑤ oxygen-containing Organic substances; such as alcohols, phenols, aldehydes, ketones, organic acids, etc. [0003] At present, the methods of controlling malodorous gases at home and abroad mainly include: 1. direct combustion method;...

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Problems solved by technology

[0007] Although the above-mentioned system and method can be used for deodorization, sterilization and removal of malodorous pollutants; however, the above-mentioned system and method still have limited deodorization and sterilization capabilities, and the photocatalytic degradation effect needs to be improved.

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