Wastewater disinfection with peracetic acid

氯是目前加拿大使用最广泛的消毒剂。余氯对水生生态系统是有毒的，氯消毒后形成的氯化副产物已被证明会对健康造成不利影响。需要替代的无氯消毒剂，过氧乙酸是主要的候选者之一。本研究的目的是调查和比较赢创两种过氧乙酸产品（PERACLEAN 15和PERACLEAN 22）在废水消毒和大肠杆菌和肠道病毒（柯萨奇病毒）灭活方面的性能。研究还将探讨聚丙烯酸与紫外线消毒的顺序使用及其对整体消毒性能的影响。此外，还将确定废水质量的变化和废水中残留的PAA浓度。

Chlorine is currently the most widely used disinfectant in Canada. Residual chlorine is toxic to aquatic ecosystems and chlorinated by-products that form after chlorine disinfection have been shown to cause adverse health effects. There is a need for alternative chlorine-free disinfectants and peracetic acid is one of the main candidates. The goal of this research is to investigate and compare the performance of two Evonik peracetic acid products (PERACLEAN 15 and PERACLEAN 22) for disinfection of wastewater and inactivation of E. coli and enteric viruses (Coxsackievirus). The research will also investigate the sequential use of PAA with ultraviolet disinfection and its effect on the overall disinfection performance. In addition, changes in wastewater quality and residual PAA concentrations remaining in wastewater will be determined.