Research on Water Quality Treatment and Economic of Sewage Treatment Plant
With the continuous improvement of Chinese people's living standards,municipal sewage treatment has received more and more attention.Based on the sewage treatment plant project in Tianjin,this study uses a combination of actual measurement and theoretical calculation to analyze the water quality and economy after sewage treatment according to local regulations and market conditions.It is found that the contents of BOD5,suspended matter,total nitrogen and total phosphorus in the effluent were less than 2 mg/L,2 mg/L,9 mg/L and 0.3 mg/L respectively,which meet the requirements of the designed effluent quality.The pre-tax financial internal rate of return on the project investment is 5.51%,and the investment payback period is 16.16 years.In terms of economic sensitivity,reducing the initial investment level has the most obvious effect on improving the pre-tax financial internal rate of return,which is as high as 14.33%when the original investment is decreased by 30%.
NETL
NSTL
万方数据
