Based On Efdc Model Of Water Quality Early Warning Research Of Huainan City

Urban water supply security is facing a serious threat at present as the river water pollution accidents occur frequently. The implementation of water quality monitoring of the whole process of the water supply system and the accurate early warning of unexpected water quality risk are the basis of urban water supply to implement refined management, and also are keys link to establish and improve drinking water security system.In this paper, basing on the EFDC (Environmental Fluid Dynamics Code) model, according to the Huaihe section of Huainan river water dynamical condition and pollutant emission situation of pollution load research results, 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:27.5and21.0mg/L; NH3-N:0.65and0.97mg/L; Ecoli:10490and10050; TN:1.05and1.01mg/L; TP:0.21and0.20mg/L. When changing the upstream pollution load, the response time of each waterworks are different, LiJuzi waterworks:1.275and0.216days during dry and wet seasons. It would provide decision support for the water pollution accident early warning and emergency response.