Ultraviolet light irradiation is a proven disinfection process using short wave length 254nm Ultraviolet (UV) energy to neutralize harmful microorganisms. UV radiation disrupts the DNA of pathogenic organisms such as bacteria, viruses and molds, leaving them unable to replicate. UV has been used to disinfect various types of effluent from low-quality combined sewer overflow (CSO) to high-quality tertiary effluent.

To comply with local bacteria limit regulations, municipal wastewater must be disinfected before discharging or reusing. The right choice of disinfection technology is one of the most important parts in the design process. UV is the preferred disinfection method for municipal wastewater discharge or water reuse applications compared to conventional chlorination technology. Today more than 20% of wastewater treatment plants in the United States are already using UV as their preferred disinfection technology and this percentage is rapidly increasing.

Enaqua pioneered the development of Non-Contact Ultraviolet Disinfection. Instead of immersing the UV lamps into the water stream, Enqaua developed Non-Contact disinfection technology which separates the UV lamps from the water and keeps the lamps dry. This provides exceptional disinfection and electrical components are not submerged in the water.