基于断面水质达标的河网生态需水量计算研究

建立了九洲江文官至石角段的河网区水量、水质计算模型,并根据实测资料对模型进行了率定;在率定的水质水量模型的基础上,引入水质及水量考察断面,以试算法计算了现状排污状况下,基于水质考察断面水质达标的河网水量考察断面的需水量,并结合Tannent法得出可维持九洲江河道可持续利用的生态需水量;此外,计算分析了河网流量与排污量的关系,结果表明:流量与排污量有明显的正相关系。

Research on Minimum Ecological Water Requirements in River Based on Water Quality

A water quantity and quality model was established for river network from Wenguan to Shijiao in Jiuzhou River,and calibrated based on the actual measured data.According to the rating water quality and water quality model,and the inspection of cross section of water quantity and water quality,the water requirement of the cross section was calculated by using the trial-and-error method;and the minimum ecological water requirement for the Jiuzhou River was obtained by unifying the Tannent method.Moreover,the relationship between run off and allowable waste load was calculated,the result showed that the run off was positively correlated to allowable waste load.