摘要
根据好氧-缺氧生物脱氮的工艺原理,设计了一体化A/O反应器,并就DO对其脱碳、脱氮处理效果的影响进行研究。结果表明,在水力停留时间HRT=12h,进水COD为300mg/L左右时,COD的平均去除率为93%。当好氧区DO在5mg/L左右时,脱氮效率最高,TN去除率达到70%。当好氧区DO为3￣4mg/L时,氨氮和总氮的去除可达到动态一致,它们的去除率均在50%～60%之间。
Integrative A/O reactor was designed on the principle of anoxic/oxic(A/O) process, and test was made on the effect of dissolved oxygen on carbon and nitrogen removal efficiency of domestic sewage. Result showed that the average removal rate of COD is 93% when HRT is 12h and influent COD concentration is about 300mg/L. Average removal rate of total nitrogen is 70% when the dissolved oxygen in oxic area is about 5mg/L. Removal rate of ammonia nitrogen and total nitrogen is about 50~60% when the dissolved oxygen in oxic area is about 3~4mg/L.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2007年第11期17-19,共3页
Environmental Science & Technology
关键词
一体化A/O工艺
溶解氧
脱氮
integrative A/O process
dissolved oxygen
denitrogen
