山区小流域污染与治理对策研究——以重庆市梁滩河流域为例

Pollution control in small drainage area in mountainous region:A case study of Liangtan River Basin in Chongqing City

20世纪90年代初兴起、经政府大力扶植而迅速发展的畜禽养殖业已成为重庆市梁滩河最主要的污染源。提出以沼气为纽带发展循环经济,将污染治理、环境保护与经济发展有效结合,走生态农业的发展道路,并从技术成熟、原料来源充沛、农户参与积极性高3方面论证了沼气化治污的可行性,探讨了不同阶段分别采用小池+还田、中池+综合利用、池群+循环经济的发展模式,为山区小城镇发展过程中协调经济增长和环境保护提供参考。

Poultry farming,which arose in the Liangtan River Basin in Chongqing City in the early 1990s and developed rapidly under the government＇s strong support,has become the most serious pollution source of the Liangtan River.A circular economy using methane gas as energy is proposed.An ecological agriculture mode combining pollution treatment,environmental protection,and economic is established.The feasibility of methane gas development is defended on three bases： its mature technology,its significant benefits,and the highly enthusiastic participation of the public.The development mode of using small pools and returning application,moderate pools and integrated utilization,and pool groups and circular economy at different stages was explored.This case study provides some ideas for joint economic growth and environmental protection in the development of small towns in mountainous areas.