RURAL WASTE MANAGEMENT IN A SOUTH INDIAN VILLAGE - A CASE STUDY

摘要

A micro-level study was carried out in a typical south Indian village to assess the quantity and type of wastes generated and its present mode of management. This information was used to identify the appropriate technologies which could enhance the value of the waste produced and, at the same time improve the economic conditions of rural people. The study indicated that nearly 2364 tons of rural wastes in the form of crop residues, animal manure and human excreta are produced annually in the village with a population of 510. About 77% of the waste generated in the village was used as domestic fuel, animal fodder and organic fertilizer for crop production. The rest (23%) was left out in open fields for natural decomposition. The energy balance sheet of the village indicated that the present consumption of biomass resources was 50% less than that actually required for various domestic and agricultural applications. Anaerobic digestion of animal manure and human excreta produced in the village could yield 82% of the domestic energy required besides enriching the waste by 3-4 times as compared to conventional storage on the ground. If the traditional mud chulha (stove) were replaced by an improved chulha, each family unit could reduce their annual biomass (fire wood) consumption by about 2/3. Commercializing the utilization of coconut and paddy biomass using the village's man-power and facilities could increase the rural family income several fold. [References: 8]