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应用围隔海水实验技术研究厦门港疏浚物倾倒入海后其中主要有害物质的释放及其对海洋初级生产力的影响。本文仅讨论了倾倒——沉降及倾倒——混合两种情况下几种主要有害物质从实验疏浚物释放到水体的结果,提出了评估释放程度的方法。释放系数计算结果表明:沉降条件下油类、666、DDT、Hg和Pb没有净释出,某些有害物质如DDT、Hg、Pb还可能由于疏浚物的加入,从水体中清除掉。Cd的释放程度较高,值得注意。搅拌混合条件下,油类、Hg、Pb、Cd、Cu的释放程度略有增加。
Study on the Release of Main Harmful Substances in Xiamen Harbor after Dumped Material Dumping in Xiamen Port and Its Impact on the Primary Productivity of the Sea. In this paper, only the results of the release of several major pollutants from experimental dredged material to water under both pouring-settling and pouring-mixing conditions are discussed, and a method to evaluate the release degree is proposed. The results of the release coefficients show that there is no net release of oil, 666, DDT, Hg and Pb under sedimentation conditions. Some of the harmful substances such as DDT, Hg and Pb may also be removed from the water due to the addition of dredged materials. It is worth noting that the release of Cd is high. With the mixing and mixing conditions, the release of oils, Hg, Pb, Cd and Cu increased slightly.