摘要
利用投加填料的A/O工艺处理城市生活污水,在填料投加率为50%的条件下,考察了水力停留时间(HRT)对系统处理效果的影响。结果表明:在水力停留时间分别为9、7.5、6.5h的条件下,该工艺对COD和NH4+-N的去除率均能达到83%和97%以上,出水水质达到了《城镇污水处理厂污染物排放标准》(GB 18918—2002)的一级A标准。研究结果还表明,在HRT为9h的条件下,对有机物和氨氮的去除效果最好,可作为该工艺的运行参数。
The A/O process with suspended carriers was used to treat urban domestic sewage. The influence of HRT on treatment efficiency was investigated at filling rate of 50%. The results show that when HRT is 9 h, 7.5 h and 6.5 h, the removal efficiencies of COD and NH4^＋ - N reach over 83% and 97% respectively. The effluent quality meets the first level criteria specified in Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant （GB 18918 -2002 ）. In addition, when HRT is 9 h, the removal efficiencies of organic matters and NH4^＋ - N are best.
出处
《中国给水排水》
CAS
CSCD
北大核心
2008年第13期46-47,共2页
China Water & Wastewater
