北京水务Issue(6)：72-78,7.DOI:10.19671/j.1673-4637.2023.06.015
基于EFDC模拟的闸坝联合调控水动力控藻研究
Research on gate-dam joint adjusting hydrodynamic conditions to control algea levels based on EFDC simulating
白慧文 1甄晨曦 2张鹏 1林瑞峰 1王慧鹏3
作者信息
- 1. 北京市北运河管理处 北京 101101
- 2. 北京住总集团有限责任公司 北京 100101
- 3. 北京师范大学 北京 100875||中国城市规划设计研究院西部分院 重庆 401120
- 折叠
摘要
Abstract
In order to study the algal bloom control method,water environmental mathematical model EFDC was used on Beijing Municipal Administrative Center section of Bei Canal River to simulating chlo-rophyll-a(chl-a)levels with different flow rate.Gates opening strategies to obtain the designed discharg-ing flow rate based on EFDC results were also calculated.Then field scale gate-dam joint tests adjusting flow rates were conducted.The results showed that,for the EFDC model,relative error for hydrodynamic parameters was 0.26％,the Nash-Sutcliffe efficiency coefficient was 0.849 and relative errors for chloro-phyll-a were less than 20％,indicating that the model was effective in simulating the hydrodynamic and water quality distribution in the river.The simulating results gave that the proper discharge flow rate for algea control was 15-25 m3/s.Instructed by this result,field scale water-discharging tests were conduct-ed and the results showed that the most effective discharge flow rate is at 20 m3/s with 5 gates opening at 0.1 m.In this condition,chl-a levels decreased by 30％-55％in the high-risk of harmful algea blooming section of the researched river.This research showed that adjusting hydrodynamic conditions is an effec-tive way to decrease chl-a level;water environmental mathematical model simulating followed by gate-dam joint adjusting hydrodynamic parameters is a promising way to control algea levels.The research re-sults can provide support for improving the fine management level of hydrodynamic algae control in the study area.关键词
EFDC/闸坝/调控/藻/水动力Key words
EFDC/gate-dam/adjusting/algea/hydrodynamic condition分类
环境科学引用本文复制引用
白慧文,甄晨曦,张鹏,林瑞峰,王慧鹏..基于EFDC模拟的闸坝联合调控水动力控藻研究[J].北京水务,2023,(6):72-78,7.
