Shedding Light on the Location, Selection, and Design of UV Reactorsfor Vancouver, B.C

摘要

SSBV Consultants, Inc., a company owned by Black & Veatch Corporation, Stantec, andrnAmec, is assisting the Greater Vancouver Water District (GVWD) with the design andrnconstruction of the Seymour-Capilano Filtration Plant (SCFP), which will treat raw waterrnfrom both the Seymour and the Capilano water supplies. The Seymour-CapilanornFiltration Plant will be located near Rice Lake in the Lower Seymour ConservationrnReserve (LSCR) and will filter up to 1,800 ML/day (475 mgd). Water from Capilanornwill be pumped through a 3.7 m diameter tunnel to the filtration plant in the LSCR, wherernit will be filtered and disinfected, and then returned to Capilano by gravity through arnparallel tunnel of the same size. The twin tunnels will be approximately 7.2 km long andrn160 – 640 m below the surface. UV disinfection will be used for primary disinfection atrnthe SCFP, with sodium hypochlorite providing secondary disinfection. Design issuesrnconsidered for this project included the location of the UV reactors, backup power andrnselection of the preferred UV manufacturer.