A/O工艺处理高有机物和氨氮城市生活污水的研究  

Research on Removal of Organic Matter and Ammonia Nitrogen from Municipal Sewage by A/O Process

作　　者：王迎益 WANG Yingyi(Shenzhen water engineering testing Co.Ltd.,Shenzhen,Guangdong 518000)

机构地区：[1]深圳市水务工程检测有限公司,广东深圳518000

出　　处：《化工生产与技术》2025年第1期32-36,I0004,共6页Chemical Production and Technology

摘　　要：采用4段A/O工艺处理城市生活污水,考察了污泥回流比、停留时间对COD_(Cr)、氨氮去除效果的影响。结果表明:污泥回流比为75%~175%时,有机物和氨氮的去除率均先增加后降低;其中污泥回流比为150%时,有机物去除率较高达91.2%;污泥回流比为125%时,氨氮去除率较高达94.7%;当停留时间为6~10 h时,A/O工艺沿程各位置有机物和氨氮含量均随停留时间增加而降低。总体上,污泥回流比和停留时间对有机物和氨氮处理效果影响不大,经4段A/O工艺处理,出水有机物和氨氮含量均可达到一级a排放标准。A four-stage A/O process was used to treat domestic sewage,and the effects of sludge reflux ratio and residence time on COD_(Cr)and ammonia-nitrogen removal were investigated.The results showed that when the sludge reflux ratio was in the range of 75~175%,the removal rates of organic matter and ammonia nitrogen both increased first and then decreased.Among them,the highest removal rate of organic matter was 91.2%when the sludge reflux ratio was 150%,and the highest removal rate of ammonia nitrogen was 94.7%when the sludge reflux ratio was 125%.When the residence time was 6~10 hours,the organic matter and ammonia nitrogen content at various positions along the process decreased with increasing residence time.Overall,the sludge reflux ratio and retention time have little effect on the treatment efficiency of organic matter and ammonia nitrogen,after being treated by the a four-stage A/O process,the outlet water has both organic matter and ammonia nitrogen content that meet the Grade A standard for discharge.

关 键 词：A/O工艺 城市生活污水 有机物 氨氮 

分 类 号：X799.3[环境科学与工程—环境工程]