摘要
针对辽河干流水污染加剧,水生态系统遭受严重破坏的现状,为恢复辽河河流型湿地状态,进一步改善干流水质,开展了辽河干流闸坝回水段自然湿地恢复工程。通过在辽河干流构筑橡胶坝,提高生态水面,及在闸坝回水段开展河道底泥生态清淤、河滩地平整、水生植物群落重建等工程措施,进行湿地自然恢复,并起到改善水质的作用。石佛寺生态蓄水工程净水效果明显,2011年5月和7月,工程下游的马虎山断面COD Cr比上游断面分别下降了55%和41%。
Against the severe water pollution and severely damaged aquatic ecosystems in the main stream of Liaohe River, it is important to carry out dam backwater natural wetland restoration so as to restore the river wetlands and further improve the water quality in the main stream. The surface of ecological water was enhanced by building up rubber dams in the main stream of Liaohe River. In tile dam backwater area, some engineering measures were carried out, such as the river sediment dredging, flood land formation and aquatic plant communities rebuilding. As a result the natural wetlands were recovered and the water quality improved. The purifying effect of water quality in the Shifosi ecological water storage engineering was obvious; comparing to the upstream section of Shifosi, the CODcr of downstream section decreased by 55% and 41% respectively in May and July 2011.
出处
《环境工程技术学报》
CAS
2014年第1期29-34,共6页
Journal of Environmental Engineering Technology
基金
国家水体污染控制与治理科技重大专项(2012ZX07202-004
2012ZX07202-005)
辽宁省辽河保护区治理与保护"十二五"规划研究(201010261)
关键词
辽河
闸坝
回水段湿地
水质改善
Liaohe River
dam
backwater wetland
water quality improvement
