Research on Development and Utilization of Municipal Sewage Sludge
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Abstract:
With the continuously increasing production of municipal sewage sludge, sludge treatment is imperative. Due to the significant decreasing of land for sludge disposal and the potential environmental problems, the traditional disposal method is not suitable for development request. Sludge is the associate product of sewage treatment plant, which contains a large number of organic matter, nitrogen and phosphorus; therefore sludge could be reusable after appropriate treatments. Utilization is the primary trend to solve the sludge problem. In this paper, the present situation of sewage sludge disposal is introduced, and the technical utilization solutions for sludge disposal are classified, including the applications of land, building material, energy, and other aspects. The factors affecting the utilization are also analyzed. Furthermore, the reasonable utilization based on local circumstances, persistent innovations of technologies and improvement of policies would act as the impetus for the sludge utilization in China.
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