改性土壤处理生活污水的初步研究

Study on the Treatment of Constructed Soil Domestic Sewage Treatment System

以生活污水为研究对象,按一定比例混合土壤、粗砂、煤渣、脱水污泥、石灰石、凹土作为基质来构建复氧改性土壤净化系统对其进行处理,初步考察了不同的污泥含量对处理效果的影响。结果显示,当系统含30%土壤、30%砂石、15%污泥、15%的煤渣、5%腐木和5%石灰石(质量比)时处理效果较好,COD、NH4+-N、TP、TN的去除率分别为46.00%、75.86%、58.22%、18.94%,且具有较大的发展潜力。

To treat the domestic sewage, the soil, coarse sand, cinder, dewatered sludge, limestone and attapulgite are mixed according to some proportation to build a constructed soil cleaning treatment system and the effects of different sludge content on the treatment are investigated. The result shows that the treatment is satisfactory under conditions： 30% of soil and coarse sand, 15% of sludge and cinder and 5% of rotten wood and limestone and the removal rate of COD, NH4＋ - N, TP, TN can reach 46.130%,75.86 %,58.22%, 18.94% respectively, so the system should be developed.