Pressure filtration of waste water sludge with ash filter aid / by James W. Gerlich and M. Daniel Rockwell.

SeriesEnvironmental protection technology series ; EPA-R2-73-231
Research reporting series. 2, Environmental protection technology ; 73-231. ^A8069
General note"Program No.11060 EZX."
General note"Prepared for the Office of Research and Monitoring, U.S. Environmental Protection Agency."
Technical rpt numberEPA-R2-73-231
Govt. docs number EP 1.23/2:73-231