人工快速渗滤系统非饱水层去除COD和氨氮  

Non-saturated layer of constructed rapid infiltration system about removing COD and ammonia nitrogen

作　　者：平玉焕 张焕祯[1] 王智丽[1] 王茜徵 宋志晓[1] 

机构地区：[1]中国地质大学(北京)水资源与环境学院,北京100083

出　　处：《环境工程学报》2015年第12期5837-5842,共6页Chinese Journal of Environmental Engineering

基　　金：国家水体污染控制与治理科技重大专项(2012ZX07205002)

摘　　要：人工快速渗滤系统（CRI）非饱水层主要完成COD的降解和氨氮的转化,是影响整个系统出水效果的关键部分。通过实验,研究了CRI非饱水层对生活污水中COD和氨氮的去除效果,并分别就pH对其影响机理进行了探讨。结果表明,污水经过CRI非饱水层后,COD的平均浓度由220.66 mg/L降至19.36-25.59 mg/L,去除率为88.13%-90.90%;氨氮平均浓度由58.13 mg/L降至18.81-28.73 mg/L,去除率为49.40%-64.09%,前者去除效果基本不受pH影响,后者受pH影响较大。Non-saturated layer of constructed rapid infiltration（ CRI） system is mainly to complete the degradation of COD and the conversion of ammonia nitrogen. as a key part,it produces a very large effect on treatment effect of CRI. In this research,the removal efficiency of COD and ammonia nitrogen was studied after the rural sewage was treated through the non-saturated layer. Further,the influence mechanism of pH to the above studied treatment effect was discussed. Results showed that after the treatment of non-saturated layer,the concentration of COD and ammonia nitrogen reduced from 220. 66 mg/L and 58. 13 mg/L to 19. 36—25. 59 mg/L and 18. 81—28. 73 mg/L,respectively,the removal rates were 88. 13% —90. 90% and 49. 40% —64. 09%.The removal efficiency of COD was barely affected by the pH,but the pH greatly affected the removal efficiency of ammonia nitrogen.

关 键 词：人工快速渗滤系统 非饱水层 COD 氨氮 去除效果 

分 类 号：X703.1[环境科学与工程—环境工程]