夏季北戴河海域COD环境容量研究

发布时间：2018-01-03 15:25

本文关键词：夏季北戴河海域COD环境容量研究　出处：《海洋环境科学》2017年05期 　论文类型：期刊论文

【摘要】：应用Mike 21软件建立了北戴河海域水动力与污染物输运数学模型,模型范围包括人造河、洋河和戴河3条入海河流。然后采用实测潮流和化学需氧量(COD)浓度对数学模型进行了验证。最后通过对河流不同的源强削减方案进行模拟和比较分析。研究结果表明:2013年8月戴河口、洋河口和人造河口海域的COD环境容量分别为375.076 t、346.803 t和309.833 t,其中洋河源强削减最大,人造河次之,戴河最小;各河口单独削减相同比例的COD源强在近岸海域产生的超标面积不等,水体交换能力较弱的戴河削减效果较洋河和人造河更显著;随着源强削减比例增加,超标面积减小,但减幅变低。
[Abstract]:The mathematical model of hydrodynamic force and pollutant transport in Beidaihe sea area is established by using Mike 21 software. The model scope includes artificial river. Three rivers, Yanghe and Daihe, into the sea. The measured tidal current and chemical oxygen demand (COD) were then used. The mathematical model is verified by the concentration. Finally, the different source intensity reduction schemes of the river are simulated and compared. The results show that: in August 2013, the Dayu estuary. The COD environmental capacity of Yanghe estuary and artificial estuary is 375.076 t / t 346.803 t and 309.833 t respectively. The smallest dihe; Each estuary alone reduces the same proportion of COD source strength in the coastal waters resulting in different areas beyond the standard, the water exchange capacity of the Dahe River has a more significant effect than the Yanghe and artificial rivers. With the increase of the ratio of source strength reduction, the excess area decreases, but the decrease becomes lower.
【作者单位】：上海海洋大学海洋生态与环境学院;同济大学土木工程学院水利工程系;浙江省水利河口研究所;河北省海洋环境监测中心;
【基金】：海洋公益性行业科研专项(201305003-5)
【分类号】：X26;X55
【正文快照】： 200092;3.浙江省水利河口研究所,浙江杭州310020;4.河北省海洋环境监测中心,河北秦皇岛066002)北戴河海滨位于我国唯一半封闭型内海——渤海西北岸,因其秀丽的风光和完善的设施成为享誉国内外的旅游胜地,吸引大量游客,也推动了京津冀区域经济发展。然而长期以来,渤海接纳了大

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