泥鳅和蚯蚓强化人工湿地净化污水能力的影响  

Loach and Earthworm Impact on Wastewater Purifying Capacity of Constructed Wetlands

作　　者：魏驰原 张婷 张安齐 WEI Chiyuan;ZHANG Ting;ZHANG Anqi(Nanjing Tech University Pujiang Institute,Nanjing 211200,China;College of Urban Construction,Nanjing Tech University,Nanjing 211816,China)

机构地区：[1]南京工业大学浦江学院,江苏南京211200 [2]南京工业大学城市建设学院,江苏南京211816

出　　处：《环境影响评价》2022年第6期86-91,共6页Environmental Impact Assessment

基　　金：2021江苏省高等学校自然科学研究面上项目(21KJD560006)。

摘　　要：本文以芦苇、美人蕉和水菖蒲为供试植物,以泥鳅和蚯蚓为供试底栖动物,研究底栖动物对湿地植物生长以及湿地污水净化能力。结果表明,泥鳅和蚯蚓对植物株高、叶长和叶宽的生长有促进作用。泥鳅和蚯蚓有利于提高人工湿地TP、COD、氨氮和TN去除率:通过对比人工湿地Ⅰ、Ⅱ,泥鳅对TN的去除率提高了5.89%;对照人工湿地Ⅱ、Ⅲ,蚯蚓对COD和TN的去除率分别提高了3.18%和1.29%;从人工湿地Ⅰ、Ⅲ中,泥鳅与蚯蚓对TN的去除率提高了7.18%。通过对比人工湿地Ⅲ、Ⅳ,基质中的青沙对以上4种指标的去除有很大的促进作用。通过不同对比研究发现,底栖动物对污水处理效果有明显的促进作用。In this study the impact of benthos on plants growth and the response of wastewater purifying capacity of wetlands to benthos is investigated,with reeds,cannas and water iris used as test plants,and loach and earthworms used as test benthos.The results show that loach and earthworms promote the growth of plant height,leaf length and leaf width.The removal rate of TP,COD,ammonia nitrogen and TN has been improved when loaches and earthworms are added into constructed wetlands.By comparing Constructed WetlandⅠand Constructed WetlandⅡ,loaches increase removal rate of TN by 5.89%;by comparing Constructed Wetland II and Constructed WetlandⅢ,earthworms increase removal rate of COD and TN by 3.18%and 1.29%,respectively;while loaches and earthworms combined help improve TN removal rate by as high as 7.18%.By comparing Constructed Wetland III and Constructed WetlandⅣ,green sand in the matrix has a great role in promoting the removal of 4 indicators mentioned above.Through varied comparative studies,it is found that benthos have obvious promoting effects on wastewater treatment.

关 键 词：复合垂直流人工湿地 底栖动物 污水净化 湿地植物 

分 类 号：X703[环境科学与工程—环境工程] X173