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河流底泥污染及其控制与修复 被引量:83

River Sediment Pollution and Its Control and Restoration
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摘要 水体底泥污染是世界范围内的一个环境问题。污染物通过大气沉降、废水排放、雨水淋溶与冲刷进入水体,最后沉积到底泥中并逐渐富集,使底泥受到严重污染。在河流环境中,河床沉积底泥以推移和悬浮形式输送,很大程度上导致了上覆水和沉积底泥的相互物理作用。河流有强有力的自然环境,在河流系统中趋向有利于沉积底泥的解吸作用,从而将会影响上覆水的水质。因此,在水质管理计划中,应该将已污染的沉积底泥作为一个污染源予以考虑,沉积底泥是河流污染的一个重要方面。文章根据近年来国内外对河流底泥污染的控制、处理、修复及利用的文献资料,分析了河流底泥的污染现状及主要类型,包括重金属、NP营养物质、难降解有机物和持久性有毒污染物等,指出了目前在底泥污染修复中存在的问题。针对河流底泥污染控制与修复技术,介绍了除控制外源污染物外的物理修复、化学修复和生物修复等几种主要的修复方法和技术,分析了各种方法的利弊以及适用情况。在阐述了堆肥、建材利用、低温热解、湿地及栖息地建设、修复废弃地和建设填方等利用方式后,提出具体的控制和修复应因地制宜,综合各种恢复技术及利用方式,以达到控制及修复污染的河流底泥,恢复河流生态系统之目的。 According to the comprehensive analysis of literatures in river sediment pollution’s control, restoration and utilization in recent years, the study introduced the types and present situation of the pollution, pointed out the questions in restoration; the physical, chemical and biological common methods. In the end, the view that all the methods should be synthetically used was put forward to recover the health system of river and realize the harmony of human and river.
出处 《生态环境学报》 CSCD 北大核心 2014年第10期1708-1715,共8页 Ecology and Environmental Sciences
基金 广东省惠州市科技计划项目(2006G57)
关键词 河流底泥 污染 控制 修复 river sediment pollution control restoration
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参考文献58

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