人民珠江2024，Vol.45Issue(12)：59-73,15.DOI:10.3969/j.issn.1001-9235.2024.12.007
暴雨径流推移过程中颗粒粒径分布与污染物含量关系
Relationship between Particle Size Distribution and Pollutant Content during the Transport of Storm Runoff
摘要
Abstract
Flood season runoff is an important factor affecting reservoir operation,and timely understanding of the runoff transport and the corresponding water quality responses during flood season can provide suggestions for reservoir operation.In-situ field monitoring is conducted at the Jinpen Reservoir,and water quality is analyzed through photometry and atomic absorption to study the reservoir runoff.It is found that the runoff's transport progress and the location where it enters the reservoir area are mainly influenced by its volume.The inflow on October 3 is three times larger than that on April 4 and 2.6 times larger than that on June 3,while the TP content is five times higher than that on June 3,and the CODMn is 1.8 times and 1.7 times higher than that on these two days,respectively,indicating that the TP and CODMn in the inflow are related to its volume.The inflow on April 4 and June 3 is nearly the same,but the TN and NO3-N on April 4,when the initial runoff happens,are 2.2 times and 1.7 times larger than that on June 3 respectively,indicating that TN and NO3-N are greatly influenced by the initial runoff.On October 3,the runoff contains over 70%of suspended particles larger than 10 µm.The turbidity reduction turned slow when it decreased to 30 NTU after the runoff entered the reservoir.Moreover,the pollutants carried by the particle are inversely proportional to the particle's size,leading to substandard water quality in the reservoir during the flood season.Under the rapid deterioration of reservoir water quality during the flood season,the quality of the water supply can be improved by releasing the high-turbidity water carried by the runoff through the flood discharge tunnel to ensure clean water storage and using elevated water intakes.关键词
水源水库/径流演变/水质/颗粒粒径Key words
water source reservoir/runoff evolution/water quality/particle size分类
建筑与水利引用本文复制引用
高爱平,黄廷林,马旭,张国荣,樊文薇,齐允之,张博,杜娟娟,崔红军..暴雨径流推移过程中颗粒粒径分布与污染物含量关系[J].人民珠江,2024,45(12):59-73,15.基金项目
国家重点研发计划课题(2022YFC3203602) （2022YFC3203602）
陕西省教育厅重点科学研究计划项目(22JY036) （22JY036）
