Comparison and Application of Rural Distributed Sewage Treatment Model

The rural distributed sewage treatment system built by qualitative methods has some deficiencies.According to the water environmental carrying capacity prevent and control of land pollution,aquantitative model of the rural distributed sewage treatment system is analyzed based on the analysis of the mechanism of the pollution discharge into the river.In other words,according to the carrying capacity of water function areas,it determines the water limit pollution gross.In accordance with water quality requirements of water function area,the pollutants concentration of control cross section is determined.The mathematical model of water environment is used to calculate the design discharge concentration of pollution sources and the removal rate of pollutants in wastewater.Consequently,the scale and process of the rural distributed sewage treatment system is obtained.This method is applied to life sewage treatment in Xinhua village and it selects the biological filter as its living sewage treatment facilities.