北京市某典型污水处理厂氨气排放研究  

Ammonia Emission Characteristics of A Municipal Sewage Treatment Plant in Beijing

作　　者：梁云平[1] 林安国[1] 邬晓东[1] 马秋月 

机构地区：[1]北京市环境保护监测中心,大气颗粒物监测技术北京市重点实验室,北京100048

出　　处：《中国环境监测》2017年第6期63-68,共6页Environmental Monitoring in China

基　　金：国家科技支撑计划(2013BAC17B01);环境保护公益性行业科研专项(20140914);北京市科技计划(Z131100001113029)

摘　　要：在污水处理厂的格栅、沉砂池、初沉池、曝气池、二沉池采集气样,同时采集相应点位水样,分析各点位氨气排放特征及其与污水指标间相关性。在格栅间、污泥脱水间收集氨气浓度分析密闭车间氨气排放量,结果表明:水气界面格栅间氨气排放浓度最高,随着处理工艺的进行,氨气排放浓度呈下降趋势;氨气排放浓度与污水中氨氮浓度及总氮浓度有较好的线性关系;沉砂池及初沉池氨气挥发速率远高于曝气池和二沉池;各工艺段氨气排放量差异较大,污水厂污水氨气排放量为922 mg/m^3,初沉池对污水厂氨气贡献率最高,为78.8%。Air and water samples were collected from several wastewater treatment units in sewage treatment plant to analyze ammonia emission characteristics and their correlation with wastewater indexes. The study results showed that： the maximum ammonia emission concentration appeared at air-water interface grille,and the concentration decreased with the treatment process; there was a good linear relationship between the concentration of ammonia emissions and the concentration of ammonianitrogen and total nitrogen concentration in wasterwater; the NH_3 volatilization rate obtained from grit chamber and pond were much higher than the others; ammonia emissions were different in different units; the total ammonia emissions from the sewage treatment plant were 922 mg/m^3; the contributing rate of NH_3 was the highest in primary sedimentation tank,which was 78. 8% .

关 键 词：污水处理厂 氨气 浓度 挥发速率 排放量 

分 类 号：X830.7[环境科学与工程—环境工程]