浓盐水排海对渤海湾盐度分布的影响预测

发布时间：2018-03-14 22:07

本文选题：渤海湾　切入点：海水淡化　出处：《海洋环境科学》2016年03期 　论文类型：期刊论文

【摘要】：利用MIKE21模型进行浓海水排放对渤海湾海水盐度分布影响的研究,分别以天津大港和河北黄骅两地建设海水淡化工程所排放的浓海水量为输入条件,模拟预测了渤海湾不同潮期和工程规模浓海水排放的扩散状况。结果显示,浓海水的稀释扩散受潮流的影响较大,总体来讲小潮低潮时排海的浓海水稀释扩散效果最差,大潮低潮和小潮高潮时次之,大潮高潮时扩散效果最好;建设10×10~4t/d以下的海水淡化工程浓海水排海对周围海区的盐度影响不显著,建设50×10~4t/d以上的大型海水淡化工程时,小潮低潮时盐度升高波及面积最大,高于背景值1.5 PSU的面积为31 km~2,最远离岸距离为6.74 km,所以大规模海水淡化工程的选址、浓海水排海方式均要进行合理规划、选择,尽可能降低其对海洋环境的不利影响。
[Abstract]:The MIKE21 model is used to study the effect of concentrated seawater discharge on the salinity distribution in Bohai Bay. The amount of concentrated seawater discharged from the desalination project of Tianjin Dagang and Hebei Huanghua is taken as the input condition, respectively. The results show that the dilution and diffusion of concentrated seawater in Bohai Bay is greatly affected by the tidal current, and the dilution and diffusion effect of concentrated seawater at low tide is the worst. When the high tide is low tide and the low tide is the second, the diffusion effect is the best at the spring tide climax, the desalination project below 10 脳 10 ~ (4) t / d has no significant effect on the salinity of the surrounding sea area, and when the large-scale seawater desalination project above 50 脳 10 ~ (4) t / d is constructed, At low tide, the salinity-rising sweep area is the largest, the area above the background value of 1. 5 PSU is 31kmm2, and the farthest offshore distance is 6.74km. so the site selection and desalination mode of large-scale seawater desalination project should be reasonably planned and selected. Minimize its adverse effects on the marine environment.
【作者单位】：国家海洋局天津海水淡化与综合利用研究所;
【基金】：海洋局业务化项目(YWH-2012-22) 海洋公益性行业科研专项经费项目(201105026,201505027) 中央级公益性科研院所基本科研业务费专项基金项目(K-JBYWF-2010-G21)
【分类号】：X145;P731.12

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