Analysis On The Influence Of Wastewater Drainage Of A Certain Enterprise Group Wastewater Treatment Plant On River Water Environment And Ecology In Huantai

With the rapid development of the social economy and the increase of urban water consumption,the discharge of wastewater has also increased.The sewage treatment plant has played a huge role in solving the problem of water pollution in China,which has greatly alleviated the water pollution in China.Crisis.However,compared with surface water V water requires total phosphorus（TP）0.4 mg/L,total nitrogen（TN）2.0 mg/L,chemical oxygen demand（COD）40.0 mg/L,ammonia nitrogen（NH₄⁺-N）2.0 mg/L,The main pollutant emission limits required by the Class A standard:TP 0.5 mg/L,TN 15.0 mg/L,COD 50.0 mg/L and NH₄⁺-N 5.0 mg/L,there is still a large gap between the two,targeting the rich The nutritional indicators（N and P）differed a lot.Therefore,from the point of view of the main pollutant emission limit,the tail water that meets the Class A emission standard will still pollute the surface water.This paper establishes the WASP water quality model in the study area of Dongzhulong River,and uses COD,ammonia nitrogen,total nitrogen and total phosphorus as water quality indicators to verify the feasibility of the established WASP water quality model by comparing the simulated and measured values.Sexuality and accuracy,and based on the monitoring results,using the one-dimensional model,the complete hybrid model,and the one-dimensional attenuation model to determine the pollution capacity of the interval river section,and explore the drainage of the wastewater treatment plant to the water environment and water ecology of the Donggulong River.influences.It lays a theoretical foundation for further water pollution control in the Dongzhulong River Basin.The main research results are as follows:（1）The relative error between the simulated value of the water quality index and the measured value under the WASP model is between 2.5%and 8.6%,and the simulated value is in good agreement with the measured value.The variation laws of the simulated values of the water quality indicators and the measured value tend to be consistent.Meet the requirements of water quality model simulation.（2）The pollution holding capacity of the downstream impact section of the drainage outlet is COD383.74 t/a,ammonia nitrogen 17.49 t/a,and the current total pollution holding capacity is COD283.13 t/a,ammonia nitrogen 14.16 t/a.This river reach still has a certain potential for receiving pollution.（3）Under the premise that the wastewater treatment plant is operating normally,and the discharged wastewater and upstream incoming water meet the various water quality indicators of the water function zone,the tail water discharge of the wastewater treatment plant will affect the water quality,water ecology and water function zone of the Dongzhulong River Smaller.（4）Wastewater from the wastewater treatment plant will have a certain impact on groundwater during the treatment process and when discharged after treatment.Therefore,under the premise of wastewater treatment facilities and anti-leakage treatment of wastewater pipelines,the groundwater in this region will not be affected by it in the near future.