北京西郊城市污水人工快滤处理与利用系统

以人工土壤作为惨滤介质处理城市污水在北京西部进行了两年中试工程运行试验研究结果表明，人工快滤处理系统对城市污水具有较高的去除率，其对 COD，BOD₅，SS，TN和 P的年平均去除率分别为 90.2％，96.4％，95.1％，32.3％和 30.2％；处理出水中 COD，BOD₅，和SS的年平均浓度分别为 39.8，3.80和 11.1mg/L；人工快滤床的年平均渗滤速率、水力负荷率和有机负荷分别为0.339cm/min， 208m/a和14.9kgBOD₅/（m2·a）；用处理出水灌溉蔬菜和水稻不会引起硝酸盐和重金属的明显积累．

Artificial soil rapid infiltration system for treating municipal wastewater in the west of Beijing

A pilot-scale plant in the west of Beijing has been stUdied by using artificial soil rapid infiltration (ASRI) treatment system for treating municipal wastewater over a two-year period. The results show that ASRI treatment system has higher removal rate for municipal wastewater;the annual average removal rates for COD,BOD5,SS, total nitrogen and solvable phosphorus are 90. 2 %, 96 .4 %, 9 5. 1 %, 3 2. 3 % and 3 0. 2 % respectively;the average concentrations of COD, B OD5 and SS in the treated effluent are 39.8,3.80 and 11.1 mg/L respectively. The results also show that annual infiltration rate, hydraulic and organic loading rates of artificial soil filter are 0.339cm/min, 208m/a and 14.gkgBOD5/m2.a respectively. It did not cause conspicuous accumulation of nitrate and heavy metals in vegetables and rice grain by using the treated effluent for agricultural irrigation.