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本文应用二维水质数学模型,分析了舟山水产食品厂排污对沈家门港区水质影响的现状,并预估了新、老两厂同时运行后港区水质污染的程度。 计算结果表明,沈家门港内污染物质主要靠潮流的稀释和输移。在此狭长的水道内,水流沿纵向流动,横向水体交换少,以致污染物沿横向不易弥散。污水沿岸排放后,高浓度污染带紧贴岸边随涨落潮流往复移动,对水道内水质有一定影响。
In this paper, the two-dimensional water quality mathematical model was used to analyze the status quo of the impact of sewage from Zhoushan Aquatic Food Factory on the water quality in Shenjiamen Port and the degree of water pollution in the port after the new plant and the old plant were operated simultaneously. The calculation results show that the pollution in Shenjiamen Port mainly depends on the trend of dilution and transport. In this long and narrow channel, the water flows in the longitudinal direction and the horizontal water exchanges less, so that the pollutants are not easily dispersed in the horizontal direction. After discharge of sewage along the shore, the high-concentration pollution belt moves back and forth along with the fluctuation trend closely and has certain influence on the water quality in the waterway.