摘要
通过引入赤子爱胜蚓,构建蚯蚓垂直潜流人工湿地,比较了蚯蚓人工湿地与对照人工湿地去除污染物的特性,并分析了投加蚯蚓对改善湿地内微生物量的空间分布及提高湿地防堵塞的效果。结果表明,蚯蚓的引入提高了垂直潜流人工湿地对污染物的去除效果,与对照人工湿地相比,蚯蚓人工湿地对COD、NH4+-N、TN、TP的去除率分别提高了15.8%、23.2%、20.6%、16.2%;同时,还增加了人工湿地各层的微生物量。在表层,蚯蚓人工湿地的细菌总数、亚硝酸菌数、硝酸菌数、反硝化菌数分别为对照人工湿地的2.3、2.9、2.0、2.1倍;并且蚯蚓的引入还在一定程度上缓解了垂直潜流人工湿地的堵塞。
A vertical-flow constructed wetland was built by adding Eisenia foetida. The pollutants removal characteristics of the earthworm constructed wetland were compared with those of the control wetland. The spatial distribution of microbial biomass and improvement of the anti-clogging characteristics after adding earthworms were analyzed. The results show that the addition of earthworms can improve the pollutants removal effect of the constructed wetland. Compared with the control wetland,the removal rates of CO...
出处
《中国给水排水》
CAS
CSCD
北大核心
2009年第23期10-14,共5页
China Water & Wastewater
基金
江苏省自然科学基金资助项目(BK2008322)
江苏省科技支撑计划项目(BE2008408)
关键词
蚯蚓
垂直潜流人工湿地
硝化
反硝化
堵塞
earthworm
vertical-flow constructed wetland
nitrification
denitrification
clogging
