生物膜与人工湿地技术治理河道污水试验研究

Experimental Study of River Sewage Treatment using Biological Membrane and Artificial Wetland Technology

选择滹沱河下游的深泽县河滩地为试验场地,建成5个污水处理单元,包含生物膜与人工湿地形式两种污水处理方式,进行河道污水处理试验研究。通过对各试验单元在不同水力停留时间(1d、3d、5d、7d)时的污水净化效果分析,可以得出,各试验单元对NO3-N净化效果最好,CODCr次之,对T-P、NH4-N、T-N的去除率较低;单元Ⅰ对各污染物指标的去除效果最好,其次是单元Ⅱ和单元Ⅴ,单元Ⅳ与单元Ⅲ的净化效果最差;各试验单元对T-N、T-P、NH4-N的去除率偏低。研究发现,炉渣和泡沫混凝土砖块可以较广泛地用于污水治理。

In this paper, the experiments of river sewage treatment were conducted in the overflow land in Shenze County downstream of the Hutuo River. Five sewage treatment units were developed, and two methods of sewage treatment were applied including biological membrane and artificial wetland. According to the analysis o{ the effects of sewage purification under different hydraulic detention time periods （1 d, 3 d, 5 d,and 7 d） in each experimental unit, all the experimental units had the best sewage purification results for NOa-N, moderate results for CODcr, and the poorest results for T-P, NH4-N, and T-N. In terms of each experimental unit, the unit I had the best sewage purification results for all contaminant indexes, followed by the unit I1 and unit V. The unit III and unit IV had the poorest sewage purification results. The results suggested that the slag and foamed concrete blocks can be used widely for sewage treatment.