摘要
东坡湖是受潮汐影响的半封闭水体,水面面积大,水动力条件差,水体停留时间长,为藻类繁殖创造了有利的水文条件,富营养化特征明显。结合海甸岛自然水系和东坡湖特点,在东坡湖设置活水泵站和节制闸,通过扩大涵口尺寸,并利用闸泵联合调度,增大了纳潮量,水流向由往复流调整为单向流,水体停留时间由22.3d减少到13.4d,改善了东坡湖的水动力条件。活水工程实施后,东坡湖的水质稳定达到《地表水环境质量标准》(GB 3838-2002)Ⅴ类标准,有效改善了水质和感官指标。
Dongpo Lake is a semi-closed water with tidal influence. It has large water surface area,poor hydrodynamic condition and long retention time, which creates favorable hydrological conditions for algal bloom and leads to eutrophication. Combing the characteristics of natural water system of Haidian Island and Dongpo Lake,a pumping station and a sluice were set up in Dongpo Lake. By expanding the culvert size and using joint scheduling of sluice & pumping station,the tidal influx was increased,the water flow direction was adjusted from reciprocating flow to undirectional flow,and the retention time was reduced from 22. 3 days to 13. 4 days,which effectively improved the hydrodynamic conditions of Dongpo Lake. After implementation of the water flowing scheme,the water quality had consistently met level V criteria of Environmental Quality Standards for Surface Water (GB 3838-2002),which effectively improved water quality and sensory indicators.
作者
胡和平
蒋任飞
文坛花
卢彦升
HU He-ping;JIANG Ren-fei;WEN Tan-hua;LU Yan-sheng(China Water Resources Pearl River Planning Surveying & Designing Co. Ltd.,Guangzhou510610,China)
出处
《中国给水排水》
CAS
CSCD
北大核心
2019年第16期103-106,共4页
China Water & Wastewater
关键词
半封闭水体
潮汐
活水工程
藻类繁殖
富营养化
水动力条件
semi-closed water
tide
water flowing project
algal bloom
eutrophication
hydrodynamic condition
