七格污水处理厂改造对钱塘江水质的影响研究

发布时间：2018-02-10 17:16

  本文关键词： 水质模拟 MIKE 污水处理厂 钱塘江河口　出处：《人民长江》2016年24期 　论文类型：期刊论文

【摘要】：为分析七格污水处理厂提标改造对钱塘江河口水质的改善情况,利用MIKE21建立了钱塘江河口闸口至盐官的平面二维潮流和水质模拟分析模型。模型验证后,选取90%保证率枯水年的实测河道地形和大潮期实测潮位过程,分析了七格污水处理厂提标改造工程对钱塘江河口水质变化的影响。结果表明:七格污水处理厂提标改造后,钱塘江河口NH3-N劣于Ⅱ,Ⅲ,Ⅳ类限值的最大影响范围分别减少了约22%,89%和50%,最大值和平均值分别降低了约21%和10%;TP劣于Ⅱ,Ⅲ,Ⅳ类限值的最大影响范围分别减少了约19%,85%和33%,最大值和平均值分别降低了约22%和7%;而CODMn劣于Ⅱ,Ⅲ,Ⅳ类限值的最大影响范围分别减少了约84%,0%和0%,最大值和平均值分别降低了约7%和3%。七格污水处理厂的提标改造可有效削减排入钱塘江的污染物总量。
[Abstract]:In order to analyze the improvement of Qiantang River Estuary water quality by standard raising of seven sewage treatment plants, a two-dimensional tidal current and water quality simulation analysis model from the gate of Qiantang River Estuary to Yanguan was established by using MIKE21. In this paper, the influence of the upgrading project of seven sewage treatment plants on the change of water quality in Qiantang River estuary is analyzed by selecting the measured river channel topography in the year of 90% guarantee rate dry water and the process of observed tidal level in the spring tide period. The results show that after the improvement of the standard of seven sewage treatment plants, the change of water quality of Qiantang River estuary is analyzed. In Qiantang River Estuary, the maximum influence range of NH3-N inferior to class 鈪，

本文编号：1501031