Lessons Learned During the Design, Construction, Start-Up, and Validation Testing of a 20 MGD LP-HI UV Disinfection System

As part of a 65 million expansion and regulatory compliance program, the City of Manteca (City) replaced the existing chlorine contact tank at the 10 mgd Wastewater Quality Control Facility (WQCF) with tertiary filtration and UV disinfection. Design, construction, start-up, and validation of the UV system represented a unique challenge considering the on-going evolution of state/local design and approval requirements while meeting a compliance/construction schedule in the midst of a major plant renovation. Lessons learned by the City-designer team are presented in this paper with an eye toward streamlining the project delivery process, avoiding costly delays during construction, and fast-tracking regulatory approvals.