活化单过氧硫酸盐降解酸性橙7的成本效益分析

Cost-Effectiveness Analysis of Peroxymonosulfate-Based Activation Technologies in Degradation of Acid Orange 7

以偶氮染料酸性橙7（AO7）的降解为例,利用成本效益分析的方法评价了两种典型的单过氧硫酸盐活化技术：Co（Ⅱ）/单过氧硫酸盐（Co/PMS）体系和UV/单过氧硫酸盐（UV/PMS）体系的经济性,分别考察了PMS初始浓度、Co（Ⅱ）初始浓度和溶液pH值对AO7降解率、PMS消耗量的影响,从而得出成本的变化规律.结果表明,降解0.1mmol·L^-1 AO7,Co/PMS体系的总成本最高达6.0×10^-4元,而UV/PMS体系的总成本为0.14～0.24元,且其电能消耗成本占总成本的比例最高达80%.两体系比较而言,用Co/PMS体系降解酸性橙7（AO7）更为经济.

Recent investigations on sulfate radical-based advanced oxidation processes（AOPs）mostly focused on the removal efficiency of pollutants,but did not take cost-effectiveness into account.In this study,two typical peroxymonosulfate（PMS）activation technologies,Co（Ⅱ）/PMS（Co/PMS）oxidation system and UV/PMS,were evaluated by testing the degradation of acid orange 7（AO7）and PMS consumption at varied pH value and different initial concentrations of PMS and Co（Ⅱ）.The results indicate that the maximum cost of oxidation of 0.1mmol·L^-1 AO7 is about 6.0×10^-4 yuan in Co/PMS system.However,the total cost ranges from 0.14 yuan to 0.24 yuan and the proportion of electricity consumption cost is up to 80% in UV/PMS system.In comparison,Co/PMS system is much more cost-effective than UV/PMS system.