不同结构稳定表流人工湿地对生活污水的处理研究

对比试验研究了折流、横向推流和纵向推流式稳定表流湿地对生活污水中的COD、NH3-N、TP、浊度的去除效果。试验的水力负荷为0.5 m3.m-.2d-1,经过2个月的试验研究结果表明,横向推流式稳定表流湿地对进入污水的COD、NH3-N、TP、浊度去除率分别为76.7%、25.5%、44.6%、83.3%;纵向推流式稳定表流湿地对应的去除率为74.1%、15.9%、34.8%、84.3%;折流式稳定表流湿地相应的去除率为67.7%、18.6%、50.2%、69.6%;试验表明,横向推流式稳定表流湿地对4种污染物的去除效果最优,纵向稳定表流湿地次之,折流稳定表流湿地第3。

COMPARATIVE STUDY OF THE STABLE SURFACE FLOW WETLAND FOR DIFFERENTIAL STRUCTURE

This paper based on the theory of stable surface flow wetland which we built a medium scale construction for disposed of domestic sewage.Further more,we discussed the removal performance of COD,ammonia,total phosphorous and suspended particulate matter for the folds stable surface flow wetland(FSSFW),the horizontal pushing stable surface flow wetland(HPSSFW),vertical pushing stable surface flow wetland(VPSSFW).Under the hydraulic loading of 0.5 m3·m-2·d-1,the result of experiment indicated that the removal efficiencies of COD,NH3-N,TP,Turbidity of HPSSFW were 76.7%,25.5%,44.6% and 83.3%,respectively,removal efficiencies of VPSSFW were 74.1%,15.9%,34.8% and 84.3%,respectively,the corresponding removal efficiencies of FSSFW were 67.7%,18.6%,50.2% and 69.6%,respectively.HPSSFW is the best in dispose of waste water,VPSSFW is the second,and FSSFW is the last one.