The Odor Treatment Methods of Wastewater Treatment Plant Based on Biological Oxidation Process

摘要

With the continuous increase of urban domestic sewage and production sewage discharge, China hasenhanced the treatment of odors in the sewage treatment process. At present, the odor problem of sewagetreatment plants needs to be treated jointly by various techniques. In this paper, biological and oxidationmethods are selected to study the odor treatment methods of sewage treatment plants, and two pilot plants ofbiological method and oxidation method are established for the pilot tests. The test results showed that: usingbiological method to treat the odors in the sewage tanks has a good treatment effect, and the treatment effectof N2 and H2S is relatively stable; using the "alkali absorption + oxidation" method to treat the odors producedby the other regulating tanks has a relative stable treatment effect. The H2S treatment efficiency is best whenthe pH is 7.5-9, the potential is 700-850, and the liquid-gas ratio is between 4.7L/m3-6.0L/m~3.