Water Quality Early Warning Research of Water Intakes in Huainan

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 response.