不同草坪覆盖地下渗滤系统处理生活污水研究  

Study on Subsurface Wastewater Infiltration System Covered by Different Turfgrass for Domestic Sewage Treatment

作　　者：张晓辉[1,2] 崔建宇[1] 蓝艳[1] 赵扬阳[1] 胡林[1] 

机构地区：[1]中国农业大学资源与环境学院,北京100094 [2]北京电子科技职业学院生物技术系,北京100029

出　　处：《环境科学》2011年第1期165-170,共6页Environmental Science

基　　金："十一五"国家科技支撑计划项目(2006BAD16B09;2008BADC4B17-11);北京电子科技职业学院自然科学基金项目(YZK2009006)

摘　　要：采用高羊茅和结缕草2种不同草坪草覆盖的地下渗滤系统对生活污水进行处理.结果表明,不同处理对COD均有较好的去除效果,COD浓度从97～357 mg.L-1降至48 mg.L-1以下,达到我国污水处理二级排放标准,不同处理间差异不显著;不同处理对氨氮的去除从76.3～125.8 mg.L-1降至0.5 mg.L-1以下,均达到地下水Ⅳ类(≤0.5 mg.L-1)标准,裸地处理氨氮出水浓度显著大于高羊茅处理,与结缕草处理差异不显著;不同处理对TP的去除从3.70～18.42 mg.L-1降至0.05 mg.L-1以下,均达到地表水Ⅱ类(≤0.1 mg.L-1)标准,各处理间差异不显著;不同处理TN和硝氮去除效果均不好,达到地下水Ⅲ类(≤20 mg.L-1)标准的概率不到1/3,裸地处理的出水TN、硝氮浓度显著高于高羊茅和结缕草处理.Domestic sewage was treated with subsurface wastewater infiltration system covered by two different turfgrass, namely,Festuca arundinacea Schres. and Zoysia japonica Steud.. The resuh shows that all the different systems have good removal rates to COD. The concentration of COD decreased to less than 48 mg·L^-1 from 97-357mg·L^-1 which achieve the second class criteria specified in Integrated Wastewater Discharge Standard,and there are no prominent difference among different systems. The concentration of NH4＋ -N decreased to less than 0. 5mg·L^-1 from 76. 3-125.8mg·L^-1 which achieve the Ⅳ criteria （ ≤ 0.5mg·L^-1） specified in Groundwater Quality Standard, the effluent concentration of NH4 -N in naked system are prominently higher than that in system covered by Festuca arundinacea Schrcs., and there are no prominent difference compared with system covered by Zoysia japonica Steud.. The concentration of TP in different systems decreased to less than 0. 05 mg·L^-1 from 3.70-18.42 mg·L^-1 which achieve the Ⅱ criteria （≤0. 1 mg＇L-]） specified in Surfacewater Quality Standard, and there are no prominent difference among different systems. The removal rates of TN and nitrate were all not good enough, the probability which achieve the Ⅲ criteria （ ≤ 20mg·L^-1） specified in Groundwater Quality Standard are less than one third,and the effluent concentration of TN and nitrate in naked system are prominently higher than that in systems covered by Festuca arundinacea Schres. and Zoysia japonica Steud.

关 键 词：地下渗滤系统 草坪草 生活污水 化学需氧量 总氮 总磷 

分 类 号：X799.3[环境科学与工程—环境工程]