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随着开发的不断深入及工业废水和生活污水的大幅排放,大铲湾变为严重污染的河口湾,为改善该海域水体污染状况,研究了水动力改善工程措施。通过水质物理模型,将无污染源排放条件下抽水、有污染源排放条件下注水两种工程方案分别与无工程措施进行对比,研究了大铲湾的水体交换能力,分析了其水质动力、水体污染浓度变化。结果表明,不采取工程措施时,水体自净难度很大;采取抽、注水措施后虽有一定改善,但无法彻底改善水环境,在持续排放污染物时湾内污水很难得到稀释,对流入河涌的污水进行处理才是改善大铲湾水质的前提条件。
With the deepening of development and the drastic discharge of industrial wastewater and domestic sewage, Dachanwan has become a serious polluted estuary. In order to improve the water pollution in this area, the engineering measures for hydrodynamic improvement have been studied. Through the water quality physical model, the two schemes of pumping water under non-polluting source discharge and water injecting under polluting source were respectively compared with those without engineering measures. The water exchange capacity of Dachan Bay was studied, and its water quality and power, water pollution concentration Variety. The results show that it is very difficult to self-clean the water body without adopting engineering measures. Although pumping and water-filling measures are improved a little, the water environment can not be completely improved. When the pollutant is continuously discharged, it is difficult to dilute the sewage in the bay, Of the sewage treatment is to improve the water quality of Dachaiwan preconditions.