Analysis of Discharge Characteristics of Typical Rural Domestic Wastewater along the Tuojiang River

Abstract

Environmental pollution caused by rural domestic wastewater has become increasingly serious. However, data on the current characteristics of rural domestic wastewater are scarce. In this study, we selected typical villages along the Tuojiang River as study objects. We analyzed the pollution status and discharge characteristics of rural domestic wastewater along the Tuojiang River through field research in winter and summer. Data analysis and collection, as well as water monitoring, were performed to determine the water quality and quantity characteristics of the rural domestic wastewater. The per capita daily discharges of rural domestic wastewater along the Tuojiang River are 11.26–50.37 L in winter and 18.39–303.57 L in summer. Both the maximum and average concentrations of pollutants in the rural domestic wastewater are higher than those in urban domestic wastewater, but the per capita daily discharge of pollutants is clearly lower in rural areas than in urban areas. The analysis of the typical discharges of rural domestic wastewater along the Tuojiang River provides a valuable reference for rural wastewater discharge treatment planning and process selection.