Effects of wastewater on the water environment of the Weihe River at Baoji

As the main river running across Shaanxi Province,the Weihe River has been polluted seriously.Baoji City is situated in the upper reaches of the Weihe River.The water quality research of Weihe River in Baoji section and wastewater treatment influence on water quality are both important.By using the one-dimension dilute self-purification model,and based on hydrology and water quality data,the paper predicted the improvement degree of the Weihe water quality after the construction of city wastewater plant under the different guarantee rate.Based on the present water pollution status and wastewater drainage of Weihe River in Baoji City,the water quality of the Weihe River inside Baoji section is calculated respectively before and after the establishment of wastewater treatment plant.With referonce to the wastewater treatment engineering plan and eco-city construction plan,we compared the water environment system before treatment with that which has been treated,and concluded that the plan of wastewater treatment of Baoji city will benefit the construction of an ecological city.