晋江海域海水淡化工程浓盐水排海方案研究
Study on the scheme of concentrated brine discharge from seawater desalination project in the sea area near Jinjiang
投稿时间:2019-05-29  修订日期:2019-06-28
DOI:
中文关键词:  海水淡化,浓盐水,盐升,排海,扩散器
英文关键词:seawater  desalination, brine, salt-rise, discharge, diffuser
基金项目:
作者单位E-mail
徐显 自然资源部天津海水淡化与综合利用研究所 zfk1229zfk@163.com 
张拂坤 自然资源部天津海水淡化与综合利用研究所 zfk1229zfk@163.com 
邹川玲 自然资源部天津海水淡化与综合利用研究所  
刘淑静 自然资源部天津海水淡化与综合利用研究所  
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中文摘要:
      为科学选择海水淡化浓盐水排海方案,运用MIKE3数值模拟软件,选取福建晋江附近海域,建立了海水淡化浓盐水排海三维数值模型,模型水位振幅误差在10cm以内,流速、流向计算结果与实测值变化规律一致,精度符合要求。考虑多端口、排放口间距、喷射速度等因素对浓盐水稀释的影响,选取了四种不同的浓盐水排放方案,开展了海水淡化浓盐水排放扩散模拟,计算了不同排海方案下盐升包络面积。结果表明,晋江海域浓盐水排放量为3.5万吨/日的海水淡化工程采用扩散器后盐升分布面积显著减少,采用多个排放口且每个排放口多个端口喷射的排放方案,可明显增强浓盐水在受纳海域中的扩散稀释效果,盐升3的分布面积可减少近一半。建议加强我国海水淡化工程浓盐水排海扩散器的研究与应用,保护受纳海域海洋生态环境。
英文摘要:
      In order to scientifically select the scheme of seawater desalination brine discharge, the three dimensional numerical model of brine discharge was established based on MIKE3 in the sea area near Jinjiang. The water level amplitude error of the model is within 10cm, the calculated results of velocity and direction are consistent with the measured values, and the accuracy meets the requirements. Considering the influence of multiple ports, discharge port spacing, injection velocity and other factors on the dilution of brine, four different schemes of brine discharge are selected, and the diffusion simulation of brine discharge is carried out. The envelopment area of salt rise is calculated under different discharge schemes. The results show that the installation of diffuser in the discharge port can effectively reduce the salt rise area of 35,000 m3/d brine discharge in Jinjiang sea area. Adopting the emission scheme with multiple discharge ports can significantly enhance the diffusion and dilution effect of brine in the receptive sea area. The envelopment area of 3 salt rise can be reduced by nearly half. It is suggested to strengthen the research and application of brine diffuser in seawater desalination project ,so as to protect the Marine ecological environment.
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