《南水北调与水利科技》：南水北调东线截污导流尾水综合处置方案研究（阮晓红,倪利晓,万清华,赵振华）（摘要）

摘要：为满足国家对南水北调东线工程江苏段出省水质要求，徐州市和宿迁市的处理尾水通过尾水导流工程经新沂河入黄海，导流入新沂河尾水量41万t/d，COD污染负荷达14965t/a，使现状劣Ⅴ类水体的新沂河更加不堪重负，导致新沂河沿线至入海口附近近海水域的生态环境进一步恶化。2550m2人工湿地中试工程实验结果表明，湿地床技术能有效的净化污染河水，对COD的去除率可达60%—70%，氨氮的去除率达75%—85%；水葱（Scirpus locustris）、春兰（Gymbidium georingii）等植物具有较强的耐淹特性。根据充分利用当地资源、以最小的建设投资和运行费用达到工程目标的原则，利用新沂河束水型行洪河道具有大量滩地资源特征，优化布置人工湿地床进行新沂河污染河水处置工程方案的设计。

关键词：南水北调东线工程；人工湿地；尾水导流；工程方案设计

中图分类号：X703 文献标识码：A 文章编号：1672-1683（2008）01-0081-04

Integrated Treatment of Channelized Tail Water of the Eastern Route of the South-to-North Water Transfer Project

RUAN Xiao-hong a,b,NI Li-xiao a,b,WAN Qing-hua a,b,ZHAO Zhen-hua a,b

(a.State Key Laboratory for Hydrology-Water Resources & Hydraulic Engineering,Hohai University,Nanjing 210098,China;b.College of Environmental Science and Engineering,Hohai University,Nanjing 210098,China)

Abstract:To ensure the water quality of the outflow from Jiangsu Section of the South-to-North Water Transfer Project,treated wastewater from the Xuzhou City and Suqian City is not allowed to discharge into the Great Canal,but can be transferred to the Yellow Sea via channelization project.The volume of tail water discharged to the Xinyyi River via channelization project is 410,000 t/d,and the pollutant load is 14 965 t/a .The present water quality of the Xinyi River is worse than Chass V,the discharge of tail water even worsens the river,resulting in further degradation of ecosystem along the Xinyi River and the estuary.Pilot-scale experiments of constructed watland with area of 2 550 m2 show that wetland can purify polluted river water,the removal efficiencies of COD and NH3-N are 60%-70% and 75%-85% respectively.The macrophytes such as Scirpus locustris, Gymbidium goeringii etc.have relatively strong endurance of flood.Full scale constructed wetland to treat polluted Xinyi River water is an optimal design to use the abundant bottomland resources of the river.

Key words:Eastern Route of South-to-North Water Transfer Project;constructed wetland;channelization of tail water;full scale constructed wetland project design

参考文献：

[1]吴建强，黄沈发，阮晓红，等.江苏新沂河河漫滩表面流人工湿地对污染河水的净化试验[J].湖泊科学，2006，18（3）：238-241.

[2]陈长太，阮晓红，王雪.人工湿地植物的选择原则[J].中国给水排水，2003，19（3）：65.

[3]吴建强，阮晓红，王雪.人工湿地中水生植物的作用和选择[J].水资源保护，2005，21（1）：1-6.

作者简介：阮晓红（1961-）女，江苏仪征人，博士，教授，环境工程学院副院长，主要从事水污染控制及水生态修复方面的研究。

来源：《南水北调与水利科技》2008年第1期