人工湿地填料净化生活污水级配优化研究  

Optimizing Substrate Gradation for Constructed Wetland Treating Domestic Wastewater

作　　者：黄逸群[1] 张民[1] 徐玉新[1] 

机构地区：[1]山东农业大学资源与环境学院,作物生物学国家重点实验室,山东泰安271018

出　　处：《环境科学与技术》2009年第3期130-134,138,共6页Environmental Science & Technology

基　　金："十一五"国家科技支撑计划项目(2006BAD10B07);国家"948"项目(201054)

摘　　要：采取室内填料柱级配淋洗试验的方法,选取粉煤灰、煤渣、空心砖填料组合作为人工湿地填料,进行不同填料级配污水净化效果研究。结果表明:在相同进水水质和水力负荷运行条件下,粉煤灰、煤渣、空心砖以体积比3:1:1混合时,COD、TN、NH4+-N去除效果最好,去除率最高分别达到47.83%、81.93%、93.53%;粉煤灰、煤渣、空心砖以体积比1:1:3混合时,TP去除率较高,可达到85.97%。试验所选填料及级配对NO3--N无较好的去除效果。考虑到填料物理特性及长期稳定运行的需要,选择粉煤灰、煤渣、空心砖以体积比3:1:1混合填料作为人工湿地去污填料最为适宜。Indoor leaching column experiments were done to investigate the effect of gradation of substrate for constructed wetland used to treat sewage. Brown soil, fly ash, cinder and hollow bricks were used as filtering media with different proportions which resulted in optimized pollutants removal of COD, TN, NH4^＋-N as well as TP. It was concluded that a volume ratio of 3 ： 1 ： 1 of fly ash, cinder, and hollow bricks respectively mixed was suitable for constructed wetland treating domestic wastewater according to the experimental result and the long-term operation need.

关 键 词：人工湿地 填料级配 淋洗 去污性能 

分 类 号：X703[环境科学与工程—环境工程]