【摘要】 随着污水排放量的增加 ,污泥的产生量也迅速增加 ,由于污泥的处置不当 ,给环境带来了极大的危害 ;另一方面 ,由于化肥的大量施用 ,土壤肥分减少 ,土壤质量日趋下降 ,农业的可持续发展面临挑战。综合论述了现有污泥的处置方法 ,分析了其优缺点。从农业的可持续发展的角度出发 ,结合自然界中氮、磷、钾等营养元素的循环规律 ,指出污水处理厂污泥回归土地是最佳选择 ,是实现水健康循环的重要支柱之一更多还原

【Abstract】 With the increasing of wastewater discharge, the wastewater sludge accumulation becomes more and more essentially dangerous to the natural environment. Meanwhile due to the massive application of chemical fertilizer, the soil is also polluted and is falling to deterioration. The existing wastewater sludge disposal methods are discussed on views of sustainable development of agricultural, environmental protection and considering the global nutrient cycle of N, P, K and so on. It is believed that agricultural sludge disposal might be the best way. By this way it will be helpful to normal water circulation in the nature.更多还原