脱氮生物填料模块的快速启动及处理黑臭水体功效

Rapid Start-up and Nitrogen Removal Efficiency of Biofilm Carrier Module for Treatment of Black and Odorous Water

针对城市微污染水体,构建了集聚氨酯生物填料、水生植物和底泥于一体的模块系统,并对其快速启动和处理效果进行了分析。预先采用城镇污水处理厂活性污泥对聚氨酯生物填料进行浸没装填,能实现处理模块的快速启动。通过分阶段的连续流运行处理黑臭水体,CODMn可以从5~30 mg/L降到4~6 mg/L,NH+4-N从5~9 mg/L降到0~0. 5 mg/L,TN从5~10 mg/L降到0. 5~2. 0 mg/L,去除率分别达75%、97%、80%,实现了同步硝化反硝化脱氮。水生植物在聚氨酯生物填料基质上生长正常,底泥中的微型动物实现了污泥的减量。

A module system assembling polyurethane bio-carrier, aquatic plants and sediments was designed and built for treating slightly-polluted river water. The device could be started rapidly by loading the polyurethane bio-carrier with the activated sludge of municipal wastewater treatment plant in advance. Simultaneous nitrification and denitrification was achieved by processing black and odorous water in a way of phased continuous flow mode. The results indicated that CODMn, NH4 - N and TN could be reduced from 5 - 30 mg/L, 5 - 9 mg/L and 5 - 10 mg/L to 4 - 6 mg/L, 0 - 0.5 mg/L and 0.5 - 2.0 mg/L re- spectively, and the removal rates could reach to 75% , 97% and 80% , respectively. The aquatic plants could grow in polyurethane bio-carrier. The microfauna in sediments attained sludge reduction.