Ultraviolet (UV) disinfection systems contact the treated secondary wastewater with UV light bulbs that are encased in clear housings.
The UV light kills pathogenic organisms by using a germicidal photochemical wavelength.
Unlike chlorination, UV leaves no residual in the wastewater with which to be concerned.
Plants that use UV must either have dual UV systems or have chlorination as a backup. Additionally, these UV systems are energy consumptive.
GPSC Notes brings Prelims and Mains programs for GPSC Prelims and GPSC Mains Exam preparation. Various Programs initiated by GPSC Notes are as follows:-