Record Display for the EPA National Library Catalog


Main Title Ultrafiltrative Dewatering of Spent Powdered Carbon.
Author Desaulnier, C. W. ; Hausslei, R. W. ;
CORP Author Amicon Corp., Lexington, Mass.
Year Published 1970
Report Number FWQA-17020-DBA; 05158,; 17020 DBA 03/70
Stock Number PB-197 865
Additional Subjects ( Activated carbon treatment ; Filtration) ; ( Sewage treatment ; Activated carbon treatment) ; ( Activated carbon ; Dewatering) ; Membranes ; Powder(Particles) ; Cost estimates ; Flocculants ; Sedimentation ; Slurries ; Polyelectrolytes ; Ultrafiltration
Library Call Number Additional Info Location Last
NTIS  PB-197 865 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 76p
Spent powdered activated carbon from secondary effluent treatment has been successfully dewatered by continuous membrane ultrafiltration. 5 and 10% carbon solids concentration slurries, using a laboratory size thin channel (0.1 sq ft membrane area), have been dewatered by continuous ultrafiltration to solids levels of 25 to 30%. Dewatering rates ranged between 50 and 100 gal/sq ft day at transmembrane pressures of from 10 to 50 psi during runs as long as 9 days, and product water was invariably free of any suspended carbon solids. The cost of membrane ultrafiltration depends upon the membrane life, and at membrane flux rates of 50 gal/sq ft day the cost of dewatering carbon from 10 to 20% solids is $0.0015 per pound of carbon with a membrane life of six months, and $0.0035 per pound with a membrane life of only one month. At the present no conclusive data on membrane life is available, but estimates of between 1 and 6 months are quite common and seen to be reasonable. (WRSIC abstract)