AWWA JAW68768

Researchers investigated the use of ultralow-pressurereverse osmosis (ULPRO) and nanofiltration (NF) membranesfor water reuse applications where lower operatingpressures and a high permeate quality are desired. Alaboratory-scale investigation was performed to comparethe rejection and operational performance ofreverse osmosis, ULPRO, and NF membranes and selecttwo for testing at a water facility in California. AnULPRO membrane and an NF membrane were thentested at pilot and full scale at a water recycling plantand monitored in terms of operational performance andrejection of total organic carbon, total nitrogen, andregulated and unregulated organic micropollutants.Pilot- and full-scale testing of the best-performing membranesdemonstrated that both ULPRO and NF membranescould meet potable water quality requirements.The presumed advantage of using ULPRO and NFmembranes diminished as fouling occurred, resulting inoperating pressures only slightly lower or similar totraditional RO membranes. Includes 30 references, tables, figures.

Product Details

Edition:

Vol. 100 - No. 9

Published:

09/01/2008

Number of Pages:

15

File Size:

1 file , 870 KB