摘要
采用复合式氧化沟工艺处理城市污水。并对系统的运行条件进行了探讨．实验结果表明：当水停留时间HRT≥30h，COD、BOD5和氨氮的去除率保持在96％、97％和93％以上，当HRT分别为20h和10h时，COD、BOD5和氨氮分别为90％、94％、87％和86％、92％、83％；重点考察在HRT为20h时。COD的浓度范围从125．3—492mg／L。氨氮的浓度范围为20～32．91mg／L。但是它们的去除率维持在90％以上。系统对污染物有更高更稳定的去除效果。而且系统对冲击负荷也有很强的适应性．
The experiment conditions of urban wastewater treatment by a model hybrid oxidation ditch were researched and reported. The resuhs showed that the removal rate of COD, BOD5 and ammonium are over 96%, 97% and 93% when HRT is more 30 h, the removal rate of COD, BOD5 and ammonium are 90% ,94% ,87% and 86% ,92% ,83% when HRT are 20 h and 10 h,respectively. When HRT was kept and mainly studied at 20 h,the range of COD and ammonium are 125.3 -492 mg/L and 20- 32.91 mg/L,but the removal rate of them are kept over 90%, which indicated that the system had a better and stable processing effect and that the system has strong adaptability to shock load.
出处
《信阳师范学院学报（自然科学版）》
CAS
北大核心
2007年第1期96-98,108,共4页
Journal of Xinyang Normal University(Natural Science Edition)
基金
国家863计划项目(2002AA601310)
河南省科技攻关项目(0424440013)
关键词
复合式氧化沟
城市污水
运行条件
冲击负荷
hybrid oxidation ditch
urban wastewater
operating conditions
shock load
