Publications by authors named "Hai-Sheng Du"
Ultraviolet (UV) light is widely used for wastewater disinfection. Traditional electrode-excited UV lamps, such as low-pressure mercy lamps (LPUV), encounter drawbacks like electrode aging and rapid light attenuation. A novel UV source of microwave discharge electrodeless lamp (MDEL) has aroused attention, yet its disinfection performance is unclear and still far from practical application.
View Article and Find Full Text PDFArticle Synopsis
- Microwave discharge electrodeless lamp (MDEL) produces UV light and, when combined with ozone (O), offers enhanced disinfection of bacteria such as E. coli and Bacillus subtilis.
- The dual treatment (MWUV/O) significantly outperformed individual treatments with either MWUV or ozone alone, achieving a high inactivation rate of 5.52 log for E. coli.
- Additionally, the MWUV/O treatment not only reduced the likelihood of bacteria reactivating post-disinfection but also improved disinfection efficiency in real domestic wastewater scenarios.
Ultraviolet (UV) irradiation is widely used for wastewater disinfection but suffers from low inactivation rates and can cause photoreactivation of microorganisms. Synergistic disinfection with UV and oxidants is promising for enhancing the inactivation performance. This review summarizes the inactivation effects on representative microorganisms by UV/hydrogen peroxide (HO), UV/ozone (O), UV/persulfate (PS), UV/chlorine, and UV/chlorine dioxide (ClO).
View Article and Find Full Text PDF