中文摘要：

采用生物接触氧化工艺对河道污水开展了分流处理的试验研究，选择滇池入湖污染负荷最高的大清河为研究对象，考察了在冬季枯水期、春季枯水期及夏季丰水期对污染物的去除效果。结果表明：生物接触氧化工艺对水质变化具有较好的适应性，通过调整运行参数，可以使对COD的去除率稳定在50％左右；对TP的去除率从冬季的20％逐渐上升至春季的50％以上，但在夏季的雨期会随进水水质及气候的变化而波动较大；对TN的去除受水温及溶解氧的影响较大，冬季的去除率为5％左右，春季上升至18％以上，夏季进一步提高至30％以上。接种活性污泥可以加快系统的启动，反应器内生长的藻类及浮萍等水生植物对去除污染物有一定辅助作用。

英文摘要：

An experimental study on distributed treatment of river wastewater was carried out using biological contact oxidation process. Taking Daqinghe River with the highest pollution load which flows into Dianchi Lake as the treatment target, the removal efficiency of contaminants in winter dry season, spring dry season and summer rainy season was investigated. The experimental results show that the process is well-adapted to the variation of wastewater quality. By adjusting the process parameters in different seasons, the removal rate of COD can be stable at about 50%. The removal rate of TP increases from 20% in winter to 50% in spring, and heavier fluctuation appears in summer rainy season because of the variation of wastewater quality and climate. The removal rate of TN is influenced by wastewater temperature and DO greatly, increases from 5% in winter to 18% in spring, and finally rises above 30% in summer. Seeding with activated sludge can accelerate the start-up of the equipment. Algae, duckweed and other hydrophytes grown in the equipment have a good accessorial effect on removal of the contaminants from fiver wastewater.