摘要
针对甬江建闸可能带来的水质恶化问题,采用MIKE21二维水流数学模型,在90%保证率和两个建闸方案(镇海电厂闸与河口闸)的基础上,考虑两种不同来水(标准来水、实际来水),分别预测建闸后甬江水体主要水质指标(COD、NH3-N)浓度值,并与建闸前进行对比。结果表明,无论标准来水还是实际来水,建闸后水质变差,建闸后的COD浓度可达到水功能区划标准,而NH3-N浓度超标严重;在河口建闸的水质优于在镇海电厂处建闸的水质。
To deal with the potential water quality problems caused by the construction of sluice gate in the Yongjiang River, two-dimensional flow model in MIKE21 was adopted on the basis of 90% guarantee rate and two sluices program （Zhenhai power plant gate and estuaries gate）. Considering two kinds of runoff, the concentration of indicators （COD, NH3-N） which represent the water quality in Yongjiang River were predicted and were compared with the figures that gained before constructing the sluice gates. The results show that no matter the standard or the actual inflow, the water qualities after building the sluice gates are relatively worse than that before the construction. Concentration of COD can reach the standard of water function zoning while the concentration of NH3-N are seriously overweight. In addition, it is better to build sluice gates at estuaries gate rather than Zhenhai power plant in terms of water quality.
出处
《水电能源科学》
北大核心
2015年第7期43-47,共5页
Water Resources and Power
基金
江苏省科技支撑计划(BE2011697)
"十二五"国家科技支撑计划项目(2012BAK10B04)
国家自然科学基金青年基金项目(51209071
51309078)
关键词
甬江
建闸
水质预测
MIKE21
Yongjiang river
sluice gate
water quality forecast
MIKE 21
