作　　者： ; ; ; ; ; ;

机构地区： 中国科学院广州地球化学研究所

出　　处： 《环境污染与防治》 2007年第7期517-520,524,共5页

摘　　要： 对传统的地下渗滤系统进行改进，采用多层过渡结构的人工土层来增大对颗粒有机物的接触氧化表面积，同时设置曝气装置保证好氧过程的氧气供应，可以大大提高污水地下处理系统的水力负荷。以中国南方典型的红壤土、河沙和砾石为填充材料，处理广州地化所小区的生活污水，水力负荷达40cm／d，远大于类似系统。试验结果表明，改进后的系统能创造良好的好氧／厌氧环境，对污染物去除效果良好，COD、BOD5、TN、NH^＋4-N、TP和SS去除率分别达到了76．7％～89．1％、83．3％～92．5％、50．3％～66．1％、65．2％～79．6%、75．4％～90．1％和77．0％～91．3％，出水主要污染物达到了《污水综合排放标准》（GB8978—1996）一级排放标准或二级排放标准。 In this research,we used an improved ARI（artificial rapid infiltration）system to treat the wastewater of a residential district in the Guangzhou Institute of Geochemistry. Multi-transitional layers were adopted herein to increase the interface contact between the suspended organic matter and oxygen. In addition, an aeration device was used to increase oxygen supply so the wastewater hydraulic application loading can be greatly increased. The hydraulic loading of the sewage was 40 cm/d, which is significantly higher than those of similar systems. The removal efficien- cies of COD,BODs ,TN,NH^＋4-N,TP and SS were 76.7% -89.1%,83. 3%-92.5%,50. 3% -66.1%,65. 2%-79.6% ,75.4%-90.1% and 77.0%-91.3% were accomplished respectively. Furthermore, these effluent concentrations met the standard for discharge of water pollutants（GB 8978-1996）.

关 键 词： 人工土层 地下渗滤系统 水力负荷

领　　域： [环境科学与工程]