Salcor UV Disinfection Unit
Wastewater Designers & Installers > UV Disinfection
The Salcor Model 3G Ultraviolet Disinfection Unit is specifically designed for disinfecting the effluent from aerobic treatment plants. It is a very reliable unit, able to reduce faecal coliform bacteria levels well below the most stringent treatment standards.
Protects Health and Environment
- Outstanding bacteria/virus kill
- Energy-efficient – less than 30 watts
- No harmful by-products – enables water reuse
- Alarmed for reliable, continuous performance monitoring
- 2 year warranty
Residential, Commercial, Municipal Uses
- Gravity flow to 4,000,000 LPDF with multiple units
- Quick install in ground/pump tank – minimal footprint
- Reliable, continuous performance monitoring
- 2 year long-life lamp easily replaced
- Teflon barrier resists fouling (minimal maintenance)
Third-Party Tested and Approved
- Only floodproof UL certified unit (NEMA 6P)
- University of Rhode Island 5 year demo test
- Outstanding NSF 6 month tests with 19 different treatment systems
- A Salcor 3G unit was tested in OSET Trial 13, Rotorua 2017-18. See OSET-NTP Trial 13 Performance Certificate Environment Technology AES-38 R and R UV.
How it Works
The 3G disinfection chamber is fixed directly to the aerobic plant (septic tank) discharge pipe and is permanently installed below ground. The ultraviolet light source for disinfection is mounted in a sub-assembly which can be inserted or removed through the top of the riser pipe for periodic servicing. The light source is mounted in the centre of an anodised aluminium frame which divides the disinfection chamber in half. The frame seals against the inner surface of the disinfection chamber to prevent flow bypass. When fully inserted, the disinfection sub-assembly is properly located by two pins mounted near the top of the disinfection chamber. The disinfection sub-assembly causes the wastewater entering one side of the unit to flow vertically downward, make a 180-degree turn, and then flow vertically upward and out the other side of the unit. This well-defined flow path is designed to give the fluid proper exposure time and no short-circuiting. The ultraviolet light source is surrounded by a clear fused quartz tube to control the lamp surface temperature.
When the disinfection chamber is filled with water, the ultraviolet light source can operate continuously, whether or not water is flowing. Continuous operation with a lamp surface temperature range of between 40 and 49 degrees Celsius provides the optimum ultraviolet light output and long lamp life.
The electrical subassembly is mounted in a junction box located on top of the 10cm riser pipe. The box contains fuses, alarm circuitry, UV lamp ballast, power cable connections, voltage surge protection, and electronic noise filters. The Salcor Model 3G alarm relay circuit triggers an external alarm to warn the user when the UV lamp is not operating properly. When the UV lamp is producing ultraviolet germicidal light at a safe level, a green LED indicator light, located on the top of the electrical junction box, glows indicating proper UV lamp operation. The light stops glowing when the light output from the UV lamp falls below a safe level or is not operating.
