秸秆生物质炭混合基质人工湿地净化农村污水性能

The Purification Performance of Rural Sewage by Straw Biomass Carbon Mixed Matrix Constructed Wetland

针对传统人工湿地处理农村生活污水存在的问题,通过构建两种不同基质结构人工湿地,研究秸秆生物质炭混合基质分层人工湿地对农村生活污水的净化效果.结果表明,秸秆生物质炭混合基质分层填充人工湿地对COD、NH3-N、TP三种污染物的平均去除率分别为64.8%,79.8%和80.4%;石英砂不分层人工湿地的则为54.3%,61.2%和62.5%.方差分析结果表明,在不同结构和水力停留时间情况下,两种反应器对COD、NH3-N及TP的去除效果差异有统计学意义(P<0.05);水力停留时间越长,两种人工湿地系统去除污染物的效果越好,在36 h时两反应器去除效果都比较好.

In view of the problems existing in the treatment of rural domestic sewage by traditional constructed wetland,this experiment studied the purification effect of straw biomass carbon mixed matrix stratified constructed wetland on rural domestic sewage by constructing two different matrix structures to compare the constructed wetland.Experimental results showed that the average removal rates of COD,NH3-N,TP three pollutants were 64.8%,79.8%and 80.4%,respectively;and 54.3%,61.2%and 62.5%of quartz sand non-stratified constructed wetlands.The results of ANOVA showed that the difference of COD,NH3-N and TP removal effect between the two reactors under different structure and hydraulic retention time was statistically significant(P<0.05).The longer the hydraulic retention time,the better the removal of pollutants by the two constructed wetland systems,and the better the removal effect of the two reactors at 36 h.