H2Flow worked closely with Tatham Engineering to develop a new ultraviolet (UV) disinfection system for the Colborne Wastewater Treatment Plant, replacing the facility’s aging chlorine dosing system with a modern and reliable disinfection solution.

One of the primary challenges was identifying a suitable installation location within the existing plant. Due to limited available space and hydraulic constraints, Tatham Engineering evaluated several potential configurations before ultimately selecting a new, fully outdoor UV channel installation.

In partnership with Trojan Technologies, H2Flow supplied a fully redundant TrojanUV3000B system designed to treat a peak flow of 3,500 m³/day. The system incorporates two UV banks within a single channel, with each bank capable of providing the required treatment capacity, allowing full redundancy without the need for a second treatment channel.

The UV system was also equipped with a Trojan TouchSmart PLC-based controller with SCADA communication, enabling plant operators to remotely monitor system status and operation from within the wastewater treatment plant.

To further enhance reliability, the control system was designed to automatically alternate to the standby UV bank if a failure occurs with the operating bank. The system can also automatically bring the redundant bank online in response to surge flows exceeding the normal rated peak flow, helping maintain effective disinfection during changing plant conditions.

The completed installation provides the Colborne WWTP with a compact, automated and highly redundant UV disinfection system while overcoming the significant space and hydraulic limitations associated with the existing facility.