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| 潮汐水域油污染计算 |
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王惠民1,王艳红2
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1. 河海大学,环境科学与工程学院,江苏,南京,210098;浅水湖泊综合治理与资源开发教育部重点实验室,江苏,南京,210098
2. 解放军理工大学,工程兵工程学院,江苏,南京,210007
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| 摘要: |
| 采用河口海岸三维模型(POM模型)计算了杭州湾、长江口的潮致流场.在此基础上,对杭州湾北岸的中港、星火和金山3个排污口冬、夏两季排放的含油废水油浓度分布进行了数值模拟.计算结果表明,在杭州湾、长江口以半日潮波占支配地位,其潮流场以M2分潮为主;在长江径流的影响下,潮致余流组成不甚明显的不对称顺时针方向的涡旋,有利于污染物向杭州湾外输移.从污染物向杭州湾外输移的情况来看,以中港较为有利,星火次之,金山较差.在现有计算条件下,取排污口油浓度初值为10 mg/L,3个排污口排出的含油废水均可达到国家Ⅲ类水质的标准. |
| 关键词: 油污染,污染物浓度,输移趋势,POM模型,潮汐水域 |
| DOI： |
| 分类号:X55 |
| 基金项目:国家自然科学基金资助项目(59779021) |
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| Calculation of oil pollution in tidal areas |
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WANG Hui-min1,WANG Yan-hong2
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1. College of Environmental Science and Engineering, Hohai University, Nanjing 210098, China; 2. Key Laboratory for Integrated Regulation and Resources Exploitation on Shallow Lakes, Ministry of Education, Nanjing 210098, China; 3. Engineering Institute of Engineering Corps, PLA University of Science and Technology, Nanjing 210007, China
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| Abstract: |
| The oil pollution of wastewater containing oil in tidal areas of the Changjiang Estuary and Hangzhou Bay is calculated by using the Princeton Ocean Model(POM),which is a three-dimensional model.The oil concentration distributions in winter and summer around the sewage outfall of Zhonggang,Xinhuo and Jinshan,located on the north coast of Hangzhou Bay,are numerically simulated.Calculation results show that the semidiurnal tidal waves are on the dominant position and the main component of tidal field is the M_2 tide in the Changjiang Estuary and Hangzhou Bay;under the action of the Changjiang runoff,the tides make a clockwise whirlpool,which is favorable to conveying the pollutants towards outside of Hangzhou Bay.In the aspect of conveying the pollutants,Zhonggang is superior to the others and Xinhuo is better than Jinshan.Under the present calculation conditions,selecting the initial oil concentration around the sewage outfall as 10mg/L is suitable for attaining the third class of the national water quality standard. |
| Key words: oil pollution,pollutant concentration,conveying trend,POM model,tidal areas |
