【摘要】 分析探讨了水中DBPs的重要先质———腐殖酸的臭氧化机理 ,采用O3氧化作为生物预处理 ,可以提高腐殖酸的生物降解能力。实验研究表明O3氧化 +生物流化床组合工艺下HA的UV- 2 50 和CODMn的去除率与单独生物处理相比 ,预臭氧化后水中有机物生物降解能力可提高30 %左右。更多还原

【Abstract】 The ozonization mechanism of humic acid(the main precursor of DBPs)are analysed and discussed.It is shown that the biological degradability of humic acid can be improved by taking ozonization as a pre\|treatment process of the biological fluidized bed.UV\-\{-250\}and COD\-\{Mn\}removal rates of humic acid are also experimentally studied in the process of ozonization following the biological fluidized bed under the different ozone dosage.It is verified that the removal rate of humic acid can be raised by about 30% as compared with that of the biological fluidized bed alone when the process with pre\|ozonization is used.更多还原