交替缺氧/好氧CAST工艺污染物去除特性  

Pollutants removal performance of alternating anoxic/oxic CAST process

作　　者：王少坡[1,2,3] 刘媛[1,2] 于静洁[1,2] 魏天兰[1,2] 孙力平[1,2] 

机构地区：[1]天津城市建设学院环境与市政工程系,天津300384 [2]天津市水质科学与技术重点实验室,天津300384 [3]北京工业大学环境与能源工程学院,北京100124

出　　处：《环境工程学报》2012年第9期3035-3039,共5页Chinese Journal of Environmental Engineering

基　　金：国家自然科学基金资助项目(51108299);中国博士后科学基金资助项目(20090460182);天津市自然科学基金资助项目(10JCYBJC05300)

摘　　要：以模拟城市污水为处理对象,采用循环式活性污泥法(CAST)反应器,对交替缺氧/好氧模式下系统去除污染物的性能进行了研究。结果表明,运行期间系统内有机物的去除率稳定,出水COD小于40 mg/L,COD平均去除率为91.7%;NH4+-N、TN的平均去除率分别为83.9%、72.4%,出水TN以NO3--N为主;系统的除磷性能良好,磷酸盐的平均去除率为90.6%。此外,出水COD、TN和TP均达到《城镇污水处理厂污染物排放标准》(GB-18918-2002)的一级A要求。The pollutants removal performance of a cyclic activated sludge technology（CAST） reactor was investigated for treatment of synthetic domestic sewage under alternating anoxic/oxic operation mode.Results showed that a stable organic pollutants removal was achieved during operation.The COD concentration in effluent was below 40 mg/L and the average COD removal efficiency was 91.7%.The average removal efficiencies of NH＋4-N and total nitrogen（TN） were 83.9%,72.4%,respectively.In the effluent,nitrate was the main nitrogen species of total nitrogen.The phosphorus was removed effectively in the system with an average phosphate removal efficiency of 90.6%.Furthermore,COD,TN and total phosphorus（TP） in effluent met the requirement of the Class I-A of the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant（GB18918-2002）.

关 键 词：循环式活性污泥法 脱氮除磷 交替A/O 

分 类 号：X703.1[环境科学与工程—环境工程]