通过小型模拟试验,研究采用“混凝过滤”方法处理后的生活污水浇灌园林绿地后,对绿地植物生长及环境安全产生的影响。研究表明:生活污水经混凝过滤去除悬浮物后浇灌绿地,不但补充了水分,还为植物提供了一定的营养成分,使植物生长茂盛。生活污水经过80 cm厚的土壤层净化后,其悬浮物、氨氮、无机磷、有机物(CODCr)的去除率分别为84%、97%、90%、68.7%,下渗水的浊度平均为0.5 NTU,氨氮、磷酸盐、有机物(CODCr)平均浓度分别为0.4 mg.L-1、0.06 mg.L-1、13.7 mg.L-1,不会对地下水造成污染。The feasibility of using living wastewater treated by the way of coagulation-filtration to irrigate the green lands was studied in this paper.It was found the water filtered by an 80-cm-thick soil layer was substantially purified.97% NH~+_4-N and 74% COD_(Cr) were removed resulting in an average final concentration of 0.4mg/L NH~+_4-N,13.7 mg·L~(-1) COD_(Cr),0.06 mg·L~(1) phosphate,and 0.5 NTU nephelometery,which was acceptable to the receiving levels of underground water.From the point of water resources recycling,this method is a promising way to reuse living wastewater for green land irrigation
