Desalination Plant Intakes - WateReuse Association

Source: Water Globe ConsultingFigure 13 – 0.5 mm Fine Mesh Screens of the Tampa Bay Power Plant IntakeAnother example of a full-scale implementation of an intake with advanced impingement andentrainment reduction features is the Filtrex Filter Intake System of the 10 MGD Taunton RiverDesalination Plant in Dighton, Massachusetts (Figure 14). This plant is planned to be constructedin two 5 MGD phases. The 30 MGD intake system for this plant is comprised of 30 racks with96, 4.6-inch long individual plastic filtration modules (candles) per rack, through which salinewater is withdrawn.The candles have a pore size of 0.04 mm (40 microns) and very low (0.2 feet/sec) through-porevelocity. These intake features allow complete avoidance of the impingement of adult fish; areduction of impingement of fish eggs down to less than 15%; and a minimization of entrainmentof larval organisms and fish eggs to less than 3% of the species in the intake area 21 . It should bepointed out that this type of screen has a limited track record because the plant began operationin November 2008 and has not been operating at its full 5 MGD production capacity as of yet.21 http://www.watereuse.org/sites/default/files/u8/Quote%2021.pdfSeawater Desalination Plant Intakes – Impingement and Entrainment Page 19