短程硝化-反硝化技术处理城市生活污水时运行特性研究  

Study on operation characteristics of short-cut nitrification-denitrification technology in treatment of municipal domestic wastewater

作　　者：巫方才 WU Fang-cai(Xuancheng Ecological Environment Law Enforcement Monitoring Station,Xuancheng 242000,China)

机构地区：[1]宣城市生态环境监测站,安徽宣城242000

出　　处：《化学工程师》2022年第8期50-53,共4页Chemical Engineer

基　　金：宣城市2020年市科技计划面上攻关项目(XCKJ20-031)。

摘　　要：针对短程硝化反硝化的工艺特点,本文将该工艺用于生活废水的处理,实验分4个阶段连续运行了60d(每阶段运行15d),每隔5d测定了装置出水口COD、NH_(3)-N、TN和TP的含量,结果表明:(1)经该工艺处理后污染物出水浓度均满足《污水综合排放标准》中一级A标准;(2)装置运行60d后出水中TN、TP、NH_(3)-N和COD的去除率分别为80%,91.8%,81.8%,85.9%,说明该工艺在脱氮除磷方面优势明显;(3)经该工艺培养的活性污泥具有较好的内源反硝化以及反硝化除磷能力,反硝化聚磷菌主要在装置启动后第15天~第45天生成。Aiming at the process characteristics of short-cut nitrification and denitrification, this study used this process to treat domestic wastewater. The device was continuously operated for 60 days in four stages(15 days in each stage). During the test, the COD at the outlet of the device was measured every 5 days. Ammonia nitrogen, TN and TP content, the results showed that:(1)After the short-cut nitrification and denitrification process has been used for treating domestic sewage for 60 days, the pollutant effluent concentration meets the first level A standard in the“Integrated Wastewater Discharge Standard”;(2)The removal rate of the four pollutants ranges from 80%,91.8%, and the removal rates of TP and ammonia nitrogen are higher, 91.8% and 85.9%, respectively, indicating that the process has obvious advantages in nitrogen and phosphorus removal;(3)The device activated sludge has good endogenous denitrification and denitrification phosphorus removal capabilities, and the formation of denitrifying phosphorus accumulating bacteria in this device is mainly on the 15th to 45th days.

关 键 词：生活污水 反硝化聚磷菌 去除率 厌氧/缺氧 

分 类 号：X703[环境科学与工程—环境工程]