Engineering Demonstration and Technological Mode of Resource Ulitiation of Rural Domestic Wastewater
This paper analyzed the rural domestic wastewater management problems,made a feasibility analysis and necessity of rural domestic wastewater resource utilization,put forward the basic principles of adapting measures to local conditions,promoting treatment with use,economic rationality,and ecological security that should be followed in rural domestic wastewater resource utilization.Three technical models of rural wastewater resource utilization were summarized,such as irrigation utilization,ecological consumption and decentralized on-site utilization.The application scope of the three rural domestic wastewater applicable to different conditions with actual case were compared and analyzed:(1)Irrigation utilization was suitable for farmland,woodland,and grassland within 300 m;(2)Ecological consumption was suitable for nearby ponds,wetlands,or new construction conditions;(3)Decentralized on-site utilization was suitable for farmers scattered and there were"four small gardens"in front of and behind the house.At the same time,the household average maintenance cost of the three utilization models was analyzed,the decentralized on-site utilization was more economical and reasonable.The promotion and use of these three resource utilization technical models will be more conducive to reducing the cost and increasing the efficiency of rural domestic wastewater treatment.