Ozone and Photocatalytic Processes for Pathogens Removal from Water: A Review

Catalysts

RuiC. Martins¹  RosaM. Quinta-Ferreira¹  Marta Gmurek¹  João Gomes¹  Ana Matos² 

[1] CIEPQPF—Chemical Engineering Processes and Forest Products Research Center, Department of Chemical Engineering, Faculty of Sciences and Technology, University of Coimbra, Rua Sílvio Lima, 3030-790 Coimbra, Portugal;CIEPQPF—Chemical Engineering Processes and Forest Products Research Center, Faculty of Farmacy, University of Coimbra, Polo das Ciências da Saúde, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal;

关键词: disinfection;    pathogens;    ozone;    photo-aided systems;    photocatalytic processes;    water reuse;    wastewater treatment;   

DOI  :  10.3390/catal9010046

来源: DOAJ

【 摘 要 】

The search for alternative water sources is pushing to the reuse of treated water coming from municipal wastewater treatment plants. However, this requires that tightened standards be fulfilled. Among them is the microbiological safety of reused water. Although chlorination is the mostly applied disinfection system, it presents several disadvantages, such as the high doses required and the possibility of formation of dangerous by-products. Moreover, the threat of antibiotic resistance genes (ARGs) spread throughout poorly treated water is requiring the implementation of more efficient disinfection systems. Ozone and photo assisted disinfection technologies are being given special attention to reach treated water with higher quality. Still, much must be done to optimize the processes so that cost-effective systems may be obtained. This review paper gives a critical overview on the application of ozone and photo-based disinfection systems, bearing in mind their advantages and disadvantages when applied to water and municipal wastewater. Also, the possibility of integrated disinfection systems is considered.

【 授权许可】

Unknown