Comparison of organic peracids in wastewater treatment: Disinfection, oxidation and corrosion
Comparison of organic peracids in wastewater treatment: Disinfection, oxidation and corrosion
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DOI：
10.1016/j.watres.2015.08.037
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发表时间：
2015-11-15
期刊：
影响因子：
12.8
通讯作者：
Lassi, Ulla
中科院分区：
文献类型：
--
作者：
Luukkonen, Tero;Heyninck, Tom;Lassi, Ulla
有机过氧酸在废水处理中的应用越来越引起人们的兴趣。过氧酸的共同有益特征是有效的抗微生物特性，缺乏有害的消毒副产物和高的氧化力。本研究合成了PFA、PAA和PPA，并在实验室批量实验中比较了它们对三级废水中大肠杆菌和肠球菌的杀灭作用、对双酚A的氧化作用和腐蚀性。消毒试验表明，PFA是一种比PAA或PPA更有效的消毒剂。1.5 mg L-1剂量和作用2min，对3.0log大肠埃希菌和1.2log肠球菌均有一定的杀灭作用。三种消毒方法的操作成本估计分别为0.0114、0.0261和0.0207(SIC)/m(3)。所研究的过氧酸消毒均符合一级动力学(Horn模型或S模型)。然而，在双酚-A氧化实验中，在类Fenton条件下(pH=3.5，Fe2+或Cu2+=0.4 mM)，过氧酸对传统使用的和较低成本的过氧化氢没有带来额外的改善。腐蚀测量显示，过氧酸只会导致微不足道的腐蚀率(
The use of organic peracids in wastewater treatment is attracting increasing interest. The common beneficial features of peracids are effective anti-microbial properties, lack of harmful disinfection by-products and high oxidation power. In this study performic (PFA), peracetic (PAA) and perpropionic acids (PPA) were synthesized and compared in laboratory batch experiments for the inactivation of Escherichia coli and enterococci in tertiary wastewater, oxidation of bisphenol-A and for corrosive properties. Disinfection tests revealed PFA to be a more potent disinfectant than PAA or PPA. 1.5 mg L-1 dose and 2 min of contact time already resulted in 3.0 log E. coli and 1.2 log enterococci reduction. Operational costs of disinfection were estimated to be 0.0114, 0.0261 and 0.0207 (sic)/m(3) for PFA, PAA and PPA, respectively. Disinfection followed the first order kinetics (Horn model or S-model) with all studied peracids. However, in the bisphenol-A oxidation experiments involving Fenton-like conditions (pH = 3.5, Fe2+ or Cu2+ = 0.4 mM) peracids brought no additional improvement to traditionally used and lower cost hydrogen peroxide. Corrosion measurements showed peracids to cause only a negligible corrosion rate (