大连湾海水环境质量状况分析

Analysis on sea water quality status in Dalian Bay

根据大连湾 1997年 11月水质调查资料 ,对该湾 2 0世纪 90年代末海域环境质量状况进行了分析 ,大连湾水域主要污染物为无机氮和活性磷酸盐 ,东部的环境质量好于西部 ,其中臭水套附近有机污染及富营养化严重 ,环境质量日趋恶化。与 90年代初相比 ,湾内部分水域无机氮及活性磷酸盐含量有所提高。应根据海域纳污能力 ,实施陆源污染物排海总量控制。

Sea water quality status in the late 1990s in Dalian Bay was analysed according to the survey data. In the Bay, the main pollutants were inorganic nitrogen and phosphorus. There was a characteristic that the east sea water quality precedes west. Because of serious organic pollution and eutrophication the water quality was worsening near Chou Shui Tao. In comparison with the early 1990s, the contents of inorganic nitrogen and inorganic phosphorus increased in a part of the sea. Total mass control of pollutants discharge should be carried out according to the seawater it self purified abilily for the pollutants.