Study On Early Warning Technology Of Drinking Water Quality

The early warning of water environmental quality is the important content of watershed pollution source control water environment health protection.According to its specialized technical core principle and the algorithm logic,this article mainly talked about the water environment quality early warning technology system research foundation.Based on the characteristics of water environment of Yuqiao reservoir,an important water source in Tianjin,a warning model of water environment quality for the pollutant load and water quality response in Yuqiao Reservoir is constructed and realized.And it based on the prediction of pollutant discharge analyzed the Water Environment Quality,including the investigation and evaluation of water quality of Yuqiao Reservoir,the construction of hydrological and water quality coupling model of Yuqiao Reservoir,the calibration and verification of the model and the actual working condition analysis based on the pollution prediction method.The main conclusions are as follows:(1)Through the field investigation of water quality of Yuqiao Reservoir,the result of water environmental chemical index analysis showed that TN was the main pollutant index in Yuqiao Reservoir,and the annual average value was 1.48 mg / L.Yuqiao Reservoir water quality in accordance with the national surface water classification standards to the water quality ?.(2)The water quality model of Yuqiao Reservoir in Jixian County was established by using MIKE 21 series software.The surface flow of Yuqiao Reservoir under the conditions of surface catchment and surface runoff,subsurface runoff and rural life drainage was simulated.Based on the total amount of non-point source pollution load,the hydrological and water quality model of Yuqiao Reservoir is constructed.A series of water quality model parameters for Yuqiao Reservoir are obtained through model validation and the model accuracy can meet the requirements of model setting.(3)Predicting and analyzing the pollutants of TN and TP in the reservoir through the forecast and analysis of the pollution sources and the construction of the earlywarning indicators and the model platform.The level of TP in the light and no alarm level indicate that TP with the source of pollution for the reservoir water quality security is in the relatively low impact.In contrast,the prediction result of TN is poor,and the forecast concentration of TN in the whole lake has reached the level of heavy police and giant police,which indicates that TN pollution intensity will have great influence on reservoir water quality safety.In the future reservoir water quality improvement needs to strengthen the control of TN pollution sources.