Absorption-biological treatment method for malodorous gas

Abstract

The invention relates to an absorption and biological treatment method of malodorous waste gas. The malodorous waste gas enters a spray absorption tower to have an absorbing, humidifying and cooling function, and then enters into a biological dripping and filtrating device and contacts with a biological film attached to the surface of the filler in the process of rising to be degraded into odorless compounds, and then the purified gas is discharged. The residence time of a vacant bed is 11 to 45 seconds. Part of the waste water produced when spraying and absorbing can be used as biological circulating water, which can be reused again as spraying water after the biochemical treatment. The absorption and biological treatment method of the invention can effectively remove the odor polluting matters such as organic amine, ammonia gas, hydrogen sulfide, mercaptan type, dimethyl sulfide (DMS), dimethyl disulfide (DMDS), styrene, volatile organic compounds (VOC), dimethyl trisulfide, benzylamine, carbon disulfide, carbonyl sulfide, etc. and all kinds of malodorous smells, most of which are poisonous and a plurality of which are carcinogens. The deodorization effect can reach 99 percent, which can discharge by reaching the standard and can be applied to a deodorization and purification treatment of the large-capacity matters polluted by different malodorous gas with low concentration.

Description

technical field

[0001] The invention relates to an absorption-biological treatment method of malodorous waste gas. technical background

[0002] The stench problem is a hot spot for residents' complaints, and domestic calls for the prevention and control of stench pollution are getting louder and louder. Stench is one of the seven typical public hazards, endangering people's health and the peace and comfort of life. Stench gas can not only bring people olfactory discomfort, but also cause anorexia, insomnia, and memory loss if they live in a foul-smelling environment for a long time. , irritability and other functional diseases. The stench affects the human respiration, digestion, cardiovascular, endocrine and nervous systems. High concentrations of stench can also cause pulmonary edema and even death by suffocation. Due to the impact of odorous substances, people's normal production and life are disturbed, and work efficiency is reduced, which leads to the deterioration ...