AWWA MTC64532

The Long Beach Water Department (LBWD), similar to many Southern Californiautilities, has been facing the issue of decreased potable water supplies. Becauseof its location, the City of Long Beach is ideally situated to take advantage ofdesalinated seawater as a source of drinking water and is interested inincorporating desalinated seawater into its potable water portfolio. However,before seawater desalination can become a reality, additional advances areneeded to further reduce the cost of desalination. LBWD is currently exploringfeasibility of using nanofiltration membranes (NF) in a dual-pass configuration toevaluate the possibility of achieving additional cost reduction as well as meetingall water quality objectives. To provide clear and quantifiable answers to water quality and O&M questionsrelated to the traditional seawater reverse osmosis (SWRO) versus dual-pass nanofiltration process, LBWDhas formulated an aggressive research program and constructed a 300,000gallons per day permeate "Prototype" research facility using full-scale equipment.This paper presents LBWD's preliminary evaluation of SWRO and initialcomparisons against dual-pass nanofiltration. Includes 11 references, tables, figures.

Product Details

Edition:

Vol. - No.

Published:

03/01/2007

Number of Pages:

14

File Size:

1 file , 330 KB