• AWWA JAW31492
Provide PDF Format

Learn More

AWWA JAW31492

  • Journal AWWA - SOC Removal in a Membrane Softening Process
  • Journal Article by American Water Works Association, 01/01/1992
  • Publisher: AWWA

$15.00$30.00


The authors investigated the rejection of six synthetic organic chemicals (SOCs) in a potable water source by a nanofiltration membrane softening process. Each SOC was studied separately for one month--which was subdivided into four recovery periods. The four largest-molecular-weight compounds (chlordane, heptachlor, methoxychlor, and alachlor) were completely rejected by the membrane. Ethylene dibromide, the lowest-molecular-weight compound studied, was not rejected by the membrane, whereas dibromochloropropane was partially rejected. Mass balances indicated that SOC recovery decreased as SOC molecular weight (MW) increased, which suggested that the three largest-MW SOCs had been adsorbed by the membrane. The percentage of SOC rejection increased as MW increased, and the rejection of inorganic solutes increased as MW and species charge increased. No effect on solute mass transfer of any solutes resulted from membrane feed-stream velocities, which were estimated to vary from 0.19 to 0.52 fps. Includes 30 references, tables, figures.

Related Products

AWWA WQTC65766

AWWA WQTC65766

Impact of MIEX Pretreatment on Downstream Conventionally Treated Water Quality Parameters..

$12.00 $24.00

AWWA WQTC57187

AWWA WQTC57187

Bromate Control During Ozonation of High-Bromide Drinking Water..

$12.00 $24.00

AWWA WQTC58965

AWWA WQTC58965

Assessment of Arsenic Treatment Alternatives for Source Waters in New Jersey, California, and Arizon..

$12.00 $24.00

AWWA ACE70521

AWWA ACE70521

Sinkzilla: Managing Media during an Interstate Disaster..

$12.00 $24.00