特别选题
尹澄清,苏胜利,张荣斌,王为东,周春东,刘俊新,赵洪涛.以河网作为城市水源的污染问题和湿地净化[J].环境科学学报,2010,30(8):1583-1586
以河网作为城市水源的污染问题和湿地净化
- Use of wetland to purify polluted stream network for a city water source
- 基金项目：浙江省重大项目(No.2006C13057);水专项课题(No.2008ZX07101-006-08);中科院知识创新工程项目(No.KZCX1-YW-06-02)
- 作者
- 单位
- 尹澄清
- 中国科学院生态环境研究中心, 北京 100085
- 苏胜利
- 嘉兴市水利局, 嘉兴 314000
- 张荣斌
- 嘉兴市水利投资有限公司, 嘉兴 314000
- 王为东
- 中国科学院生态环境研究中心, 北京 100085
- 周春东
- 嘉兴市水利勘察设计院, 嘉兴 314000
- 刘俊新
- 中国科学院生态环境研究中心, 北京 100085
- 赵洪涛
- 中国科学院生态环境研究中心, 北京 100085
- 摘要：杭嘉湖某市地处长江三角洲,其饮用水水源来自河道水网.近年来由于上游经济发展迅速,环境保护相对滞后,水网水质下降严重.河道水网具有污染源多,水动力学条件复杂多变,控制困难等特点.为保障供水安全,该市在新塍塘的水厂进水口前建设了"生态型水质净化湿地系统".它的总面积为110hm2,由预处理区、根孔净化区、泵提升和曝气充氧区、深度净化区(湖系统)组成.监测结果表明,该湿地使原水水质显著提高,其中氨氮去除率达到32.5%.同时湿地系统还具有贮存大量原水缓冲水厂供应、提供清新空气、为很多物种提供栖息地等多种生态服务功能.
- Abstract：JX City,located in the Yangtze River delta,takes drinking water from a stream network.In recent years,the water quality has declined rapidly because of the economic development in upstream areas.Stream networks have many pollution sources and complicated hydrodynamics that are difficult to control and threaten regional water safety.The JX City built an "ecological water purification wetland" in front of the water plant as the final barrier.The wetland has an area of 110 hm2,including a pretreatment zone,root-channel purification zone,water level rising and aeration zone,and deep purification zone.The wetland significantly improves water quality,and the removal rate of ammonia nitrogen was 32.5 %.This wetland system has other functions of ecological service,such as water storage buffering,urban air refreshing,habitats for wildlife and recreation site for the residents.
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