Investigation and Analysis of Production and Discharge of Rural Domestic Source Water Pollutants in Hanzhong City

In order to study characteristics of domestic water pollutants of rural residents and pollution load to environment in Hanzhong city，discharge coefficient of rural residents' domestic sewage was measured.Results showed that discharge coefficient of domestic water pollutants in different areas of Hanzhong city were different due to factors such as geographical features，daily water consumption per capita，economic status，age composition，and number of daily meals.Village treatment facilities had significant effects on COD，BOD5，ammonia nitrogen，total nitrogen，and total phosphorus removal rate，but removal efficiency of animal and vegetable oils was not obvious.Survey could provide data support for first calculation of rural domestic water pollutant discharge in Shaanxi province，and further improve information database of domestic pollution sources.