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图  1  紫外/氯体系中PRM和NB的降解

Figure 1.  Degradation of PRM and NB in the UV/chlorine process

图  2  TBA和IPA在pH=6.2和pH=8.2条件下对紫外/氯体系降解PRM的影响

Figure 2.  Effect of TBA and IPA on the degradation of PRM at pH 6.2 and 8.2

图  3  不同pH对PRM降解的影响

Figure 3.  Effect of pH on the degradation of PRM

图  4  Cl⁻、HCO₃⁻、NO₃⁻和 EfOM对PRM降解的影响

Figure 4.  Effect of Cl⁻, HCO₃⁻, NO₃⁻ and EfOM on the degradation of PRM.

图  5  不同浓度Fe³⁺对紫外/氯体系降解PRM的影响及自由基贡献

Figure 5.  Effect of different concentrations of Fe³⁺ on PRM degradation by the UV/chlorine and the corresponding contribution of radicals

图  6  PRM在紫外/氯体系中的降解、矿化和FC的消耗

Figure 6.  PRM degradation, variation of TOC, and consumption of free chlorine in the UV/chlorine process

图  7  PRM在紫外/氯体系降解过程中小分子有机酸的浓度变化

Figure 7.  Variation in the concentrations of low molecular weight organic acids during PRM degradation in the UV/chlorine process

图  8  PRM在紫外/氯体系降解过程中${{\bf{NO}}_3^{-} }$、${{\bf{NO}}_2^{-} }$和${{\bf{NH}}_4^{+} }$的浓度变化

Figure 8.  Variation of the concentrations of ${{\rm{NO}}_3^{-} }$, ${{\rm{NO}}_2^{-} }$ and ${{\rm{NH}}_4^{+} }$ during PRM degradation in the UV/chlorine process

图  9  紫外/氯高级氧化体系降解PRM路径图

Figure 9.  Proposed pathways of PRM degradation by the UV/chlorine process