天津南港工业区海水淡化工程附近海域水质调查

海水淡化工程带给城市经济社会效益的同时，也给海洋环境带来负担。海水淡化工程产生的大量排海浓海水在温度、盐度、有机物和营养盐、重金属、酸度、余氯、溶解氧和机械卷载效应等方面对海洋生态环境和海洋生物会产生一定影响，甚至对人类健康产生间接的危害。文章在2018年调查天津南港工业区海水淡化工程附近海域水质状况的基础上，分析海水水质变化趋势。研究表明：2018年调查区域主要污染因子为无机氮，其次为化学需氧量；其局部海域范围内无机氮和化学需氧量的含量各自呈现规律性变化；其他指标均未出现明显波动；南港工业区海水淡化工程附近海域的调查指标未发生明显变化。

Investigation on the Water Quality of the Sea near the Desalination Project of Tianjin Nangang Industrial Zone

The seawater desalination project not only brings economic and social benefits to the city,but also brings burdens to the marine environment.A large amount of concentrated seawater discharged from the seawater desalination project will have a certain impact on the marine ecological environment and marine life in terms of temperature,salinity,organic and nutrient salts,heavy metals,acidity,residual chlorine,dissolved oxygen and mechanical winding effect,and even cause indirect harm to human health.The water quality of the sea area near the desalination project of Tianjin Nangang Industrial Zone was investigated to analyze the change trend of seawater quality in February,May,August,October and December of 2018.The study showed that inorganic nitrogen was the main pollution factor in the survey area in 2018,followed by chemical oxygen demand.The contents of inorganic nitrogen and chemical oxygen demand in the local sea area showed regular changes,but no significant fluctuations,and the survey indexes in the sea area near the desalination project of Nangang Industrial Zone did not change significantly.