ASBBR/SCW组合工艺处理小城镇污水的效能  

Efficiency of ASBBR and SCW Combined Process in Treatment of Small Town Sewage

作　　者：皮家悦[1] 韩懿[1] 周健[1] 陈浬[1] 张建兵[1] 

机构地区：[1]重庆大学三峡库区生态环境教育部重点实验室,重庆400045

出　　处：《中国给水排水》2012年第23期5-8,共4页China Water & Wastewater

基　　金：国家水体污染控制与治理科技重大专项(2009ZX07315-005)

摘　　要：针对小城镇及集镇等小规模污水处理中水质波动大、处理目标要求不同的问题,同时为了增强人工湿地处理污水的稳定性及灵活性,提出了ASBBR/SCW组合工艺,拟实现人工湿地的优化运行。考察了在不同处理目标下,组合工艺的最佳运行工况及其对污染物的去除效能。在温度为20～25℃的条件下,当以COD为主要去除目标时,ASBBR和SCW的HRT均为4 h,可使系统出水COD降至48 mg/L,去除率为85%;当以COD、NH3-N为主要去除目标时,ASBBR和SCW的HRT分别为12、4 h,可使系统出水COD和NH3-N分别为49、7 mg/L,去除率分别为85%、78%;当以COD、NH3-N和TN为主要去除目标时,ASBBR和SCW的HRT分别为4、12 h,可使系统出水COD、NH3-N和TN分别为38、7和17 mg/L,去除率分别达到88%、77%和54%。To address the large variation in the sewage quality and the different treatment goals in small towns, as well as to enhance the stability and flexibility of constructed wetland in sewage treatment, a combined process of ASBBR and SCW was developed. The optimal operating condition and treatment efficiency of the combined process were investigated under conditions set for different sewage treatment targets. When the sewage temperature was 20 to 25 ~C, and COD was the primary removal target, the HRTs of ASBBR and SCW were both 4 h, the effluent concentration of COD was 48 mg/L, and the re- moval rate was 85%; when COD and NH3 -N were the primary removal targets, the HRTs of ASBBR and SCW were 12 h and 4 h respectively, the effluent concentrations of COD and NH3 -N were 49 mg/L and 7 mg/L, and the removal rates were 85% and 78% respectively; when COD, NH3 - N and TN were the primary removal targets, the HRTs of ASBBR and SCW were 4 h and 12 h respectively, the effluent concentrations of COD, NH3 -N and TN were 38 mg/L, 7 mg/L and 17 rag/L, and the removal rates were 88%, 77% and 54% respectively.

关 键 词：小城镇污水 序批式人工湿地 厌氧生物膜反应器 组合工艺 

分 类 号：X703[环境科学与工程—环境工程]