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本文探讨了湛江港西侧的一间临海化工厂大量未处理的工业废水排入海后,其有害物质在附近海区的行为。发现大多数有害物质的浓度与距离之间的关系可用C_i=αL~(-b)表示。从大多数有害物质浓度与盐度之间呈幂函数的关系可见,浓度的降低不仅仅是大量潮水稀释所致,还存在强烈的物理、化学沉积的过程,致使污水携带入海洋的大量有害物质在海水中迅速得到稀释和沉淀,受到污染的沉积物,其重金属浓度约高出邻近海区相应背景浓度1—2个数量级,破坏了海区原有的红树林生态环境。
This article explores the behavior of a large amount of untreated industrial wastewater discharged into the sea from a Linhai chemical plant on the west side of Zhanjiang Port in the vicinity of the sea area. It is found that the relationship between the concentration of most harmful substances and the distance can be expressed as C_i = αL ~ (-b). From the relationship between most of the concentration of harmful substances and salinity as a function of power, it can be seen that the reduction of concentration is not only caused by the dilution of a large amount of tidal water but also the intense process of physical and chemical deposition, resulting in a large amount of harmful substances In sediments that are rapidly diluted and precipitated in seawater, the concentrations of heavy metals in soils contaminated by sediment are about one to two orders of magnitude higher than the corresponding concentrations in the adjacent sea areas, destroying the original mangrove environment in the sea.