大连湾海域水质主要污染因子及污染源贡献分析

Analysis of major pollution factors in sea water and contribution of pollution sources in Dalian Bay

主要基于因子分析法构建因子诊断模型,对大连湾主要污染因子及空间分布特征进行研究,并根据海湾监测站位主要污染因子的优势比值以及不同类型污染源的排污特征分析,诊断目标区域内主要污染来源及不同类型污染源对邻近海域的贡献率。因子诊断结果表明,大连湾主要污染方式有5类,其中工业污水、生活污水和机械加工废水是主要的污染来源;污染源贡献率研究结果表明,臭水套海域各站点生活污水、加工制造和工业废水的贡献率最大值分别为24.7%、44.1%和40.1%。

In this paper,a factor diagnostic model based on the method of factor analysis was constructed to study the major pollution factors and spatial distribution characteristics in Dalian bay,and the contribution rate of different types of discharge sources to adjacent waters were diagnosed through the analysis of odds ratio of different sites in local bay and sewage discharging characteristics of different polloution sources. The results of factor diagnosis showed that 5main pollution modes were existed in Dalian bay,especially industrial wastewater,sewage and Machining Wastewater.The ratio study of different pollutant sources in Choushui tao area indicated that industrial wastewater,sewage and Machining Wastewater had a larger contribution rate with the maximum percentage of 24. 7%,44. 1% and 40. 1%,respectively.