CASS工艺运行方式及其对生物脱氮效果的影响  

Effect of Operation Mode of CASS Process on Denitrification Efficiency

作　　者：柴成山[1] 陶涛[1] 罗锋[1] 徐廷国 崔松阳 雷明 

机构地区：[1]华中科技大学环境科学与工程学院,湖北武汉430074 [2]佛山市水业集团有限公司,广东佛山528000

出　　处：《中国给水排水》2012年第17期121-123,共3页China Water & Wastewater

摘　　要：通过对独立厌氧段CASS工艺特点的分析,结合广东地区生活污水浓度低的实际情况,探讨了工艺的运行方式。独立厌氧池的设置保证了工艺有足够的厌氧时间,同时为保证独立厌氧池有足够的污泥浓度采用了污泥间歇回流的运行方式,工艺出水TP平均浓度为0.4 mg/L;在进水TN浓度提高,出水TN浓度也随之升高的情况下,通过在好氧段前增加缺氧段,使出水TN浓度达到了《城镇污水处理厂污染物排放标准》(GB 18918—2002)的一级A标准。The characteristics of CASS process with a separate anaerobic zone were analyzed. The operation mode of CASS process in treating low-concentration domestic sewage in Guangdong Province was investigated. Setting up a separate anaerobic zone ensured sufficient anaerobic time, and adopting intermittent return sludge ensured MLSS in the anaerobic zone. The average concentration of effluent TP was 0.4 mg/L. The increased concentration of influent TN resulted in increased concentration of the effluent TN. By placing anoxic zone before aerobic zone, the effluent TN concentration met the first level A criteria specified in Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant （GB 18918 - 2002）.

关 键 词：CASS 厌氧 运行方式 脱氮 

分 类 号：X703[环境科学与工程—环境工程]