PRESSURE VESSEL FOR SEA WATER REVERSE OSMOSIS AND PROCESS THAT AVOIDS SCALING PROBLEMS

摘要

An SWRO module for use in a desalination plant receives refresh water to increase production and product quality and reduce scaling problems. The SWRO module includes a pressure vessel having a front-end feed port, a rear-end brine port and a rear-end permeate port, A plurality of RO membrane elements are located in series within the pressure vessel. At least one refresh port leading to an interconnector mixing zone within the pressure vessel is located between two of the plurality of RO membrane elements. The port is configured such that refresh water added to the SWRO module through the refresh port mixes with the feed water supplied through the front-end feed port in the interconnector mixing zone,