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臭氧处理剩余污泥的减量化实验研究

Keywords: 剩余污泥,减量化,臭氧,总固体浓度,挥发性总固体浓度,溶解性COD

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Abstract:

采用质子交换聚合物膜电解法(PEM)产生臭氧,单独对剩余污泥进行氧化破解实验,结果表明,随着臭氧化反应时间的增加,污泥微生物细胞裂解,胞内物质进入到污泥溶液中,污泥固体物质减少,使得TS和VTS均显著下降,处理40min后,其去除率分别达到57.33%和72.76%;SCOD前30min呈线性增长,通入臭氧60min后,由处理前的3501.24mg/L上升到6298.32mg/L,增长率达79.88%;SV30及滤饼含水率均呈下降趋势,表明剩余污泥的沉淀性能及脱水性能得到明显改善。实验结果表明,直接利用臭氧对剩余污泥进行处理,可获得良好的减量化效果。

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