强降雨过程中入库面源污染对库区水质的影响

doi:10.11988/ckyyb.20161227

院报 ›› 2018, Vol. 35 ›› Issue (5): 12-16.DOI: 10.11988/ckyyb.20161227

强降雨过程中入库面源污染对库区水质的影响

黄瑞^1,2, 韩龙喜¹, 张防修^1,3

1.河海大学环境学院,南京 210000;
2.扬州市职业大学资源与环境工程学院,江苏扬州 225000;
3.黄河水利科学研究院,郑州 450003

收稿日期:2016-11-23 出版日期:2018-05-01 发布日期:2018-06-16
作者简介:黄瑞(1980-),男,江苏南通人,副教授,博士研究生,研究方向为水环境保护及信息化建设。E-mail:1546028308@qq.com
基金资助:
水利部公益性行业科研专项(201101031)

Effects of Non-point Source Pollutants on Water Quality of Reservoir During Heavy Rainfall

HUANG Rui^1,2, HAN Long-xi¹, ZHANG Fang-xiu^1,3

1.College of Environment, Hohai University, Nanjing 210000, China;
2.Department of Resource & Environment Engineering,Yangzhou Polytechnic College, Yangzhou 225000, China;
3.Yellow River Institute of Hydraulic Research, Zhengzhou 450003, China

Received:2016-11-23 Online:2018-05-01 Published:2018-06-16

摘要/Abstract

摘要： 为分析强降雨导致面源污染入库对库区水质的影响,以大伙房水库为例,构建库区三维水动力及水质模型,分析了强降雨过程中库区三维水动力及污染物浓度空间变化特征。结果表明:当入库流量较大时,库区水流场主要受吞吐流影响。污染团在水流输移作用下向下游迁移扩散,最大浓度及影响范围随时间先增加后逐步减小。当入库流量逐步减小时,吞吐流的影响逐步减弱,水流场变化受吞吐流和风生流共同支配。污染团在迁移过程中受此影响,浓度在三维方向呈现相应变化特征。研究结果可为制定更为切实可行的面源污染治理措施提供技术参考。

关键词: 强降雨, 农业面源污染, 三维数值模拟, 水质评价, 大伙房水库

Abstract: To obtaining the influence of non-point source pollution caused by heavy rainfall on the water quality of reservoir, a 3-D hydrodynamic and water quality model is established to analyze the changes in 3-D hydrodynamics and spatial distribution of pollutant concentration in Dahuafang reservoir during heavy rainfall. Result show that in the presence of large inflow, the flow field in reservoir area is mainly affected by inflow and outflow; pollutants migrate and diffuse towards the downstream with the flow process, and the maximum concentration and influence range increase and then decrease with the passing of time. When inflow gradually reduces, the influence of stream flow on reservoir flow field gradually weakens while the effect of wind-driven flow gradually intensifies, which suggest that the flow field is controlled by both the inflow and outflow and the wind-driven flow. In the course of migration, pollutant concentration presents corresponding changing characteristics in three dimensions.

Key words: heavy rainfall, agricultural non-point source pollution, three-dimensional numerical simulation, water quality evaluation, Dahuofang Reservoir

中图分类号:

P343

黄瑞, 韩龙喜, 张防修. 强降雨过程中入库面源污染对库区水质的影响[J]. 院报, 2018, 35(5): 12-16.

HUANG Rui, HAN Long-xi, ZHANG Fang-xiu. Effects of Non-point Source Pollutants on Water Quality of Reservoir During Heavy Rainfall[J]. JOURNAL OF YANGTZE RIVER SCIENTIFIC RESEARCH INSTI, 2018, 35(5): 12-16.

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强降雨过程中入库面源污染对库区水质的影响

Effects of Non-point Source Pollutants on Water Quality of Reservoir During Heavy Rainfall

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