| 引用本文: | 李颖,庾从蓉,孙钰峰,等.降雨强度对植被过滤带中胶体迁移过程的影响[J].水资源保护,2020,36(6):112-116DOI:10.3880/j.issn.1004-6933.2020.06.018 |
| LI Ying,YU Congrong,SUN Yufeng,et al.Effect of rainfall intensity on colloid migration in vegetation filter strips[J].Water Resources Protection,2020,36(6):112-116. |
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| 摘要:通过人工降雨条件下胶体在10 m长度植被过滤带中的运移试验，建立耦合降雨的胶体迁移模型，以探究降雨强度对植被过滤带中胶体运移过程的影响。结果表明:不同降雨强度下，胶体在植被过滤带中的沉积吸附效率系数随运移距离呈幂指数下降趋势，并在6 m左右趋于稳定；随着降雨强度的增大，胶体在植被过滤带中的沉积吸附效率系数增大，在较大降雨强度下的去除效果更好。 |
| 关键词: 胶体迁移 沉积吸附效率系数 降雨强度 植被过滤带 |
| DOI：10.3880/j.issn.1004-6933.2020.06.018 |
| 基金项目:国家自然科学基金青年科学基金(51509069)；中央高校基本科研业务费专项(2019B10814)；江苏省双创基金；水文水资源与水利工程科学国家重点实验室开放研究基金面上项目( 2017490811) |
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| Effect of rainfall intensity on colloid migration in vegetation filter strips |
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LI Ying1, YU Congrong1,2, SUN Yufeng1, DUAN Peiyi1
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1.College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China;2.State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Nanjing 210098, China
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| Abstract:An experiment of colloid migration in the 10 m long vegetative filter strips under artificial rainfall conditions was made, and the colloid migration model of coupled rainfall were set up to explore the effect of rainfall intensity on the colloid migration through vegetation filter strips. The results show that under different rainfall intensity, the deposition and adsorption efficiency coefficient of the colloid in the vegetative filter strips decreased exponentially with the migration distance, and tended to be stable at location of about 6m. With the increase of rainfall intensity, the deposition and adsorption efficiency coefficient value of the colloid in the vegetative filter strips increased as a whole, indicating that the colloid removal effect under the larger rainfall intensity was better. |
| Key words: colloid migration deposition and adsorption efficiency coefficient rainfall intensity vegetation filter strips |
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