淮南市水厂取水口水质指标预警研究

Water Quality Early Warning Research of Water Intakes in Huainan

根据淮河淮南段河道水动力条件和污染物排放情况,基于水环境模型模拟了淮南市取水口在不同季节水质指标的变化情况,分析了出现污染事故时各水厂取水口的应急反应时间。结果表明,在满足地表水三类水质标准条件下,在枯水期和丰水期上游入口监测断面的水质指标要求分别为COD 27.5和21.0 mg/L,NH3-N0.65和0.97 mg/L,Ecoli 10490和10050个,TN 1.05和1.01 mg/L,TP 0.21和0.20 mg/L。上游入口污染负荷突然增加时污染物到达各取水口的应急反应时间不同,其中最接近监测断面的李咀孜水厂在枯水期和丰水期分别为1.275和0.216天。研究成果可为淮南市水污染事故预警和应急反应提供决策支持。

Basing on the river hydrodynamic conditions and water pollution emission of Huaihe River in Huainan, a river model was developed. The authors simulated and analyzed the water quality index changes in different seasons and the response time of each waterworks intakes in case of pollution accident emergency. The simulation results show that during dry and wet seasons the water quality of the upstream monitoring section are as follows. COD： 27.5 and 21.0 mg/L; NH3-N： 0.65 and 0.97 mg/L; Ecoli： 10490 and 10050; TN： 1.05 and 1.01 mg/L; TP： 0.21 and 0.20 mg/L. When changing the upstream pollution load, the response time of each waterworks are different, Li Juzi waterworks： 1.275 and 0.216 days during dry and wet seasons. It would provide decision support for the water pollution accident early warning and emergency resoonse.