74460749
Nov 19, 1993
Mar 25, 1997
power operated filtration system for waste water and sewage treatment without use of a mesh like screen, said system being comprised of several vertically extended solid shafts on which are mounted solid discs, with solid spacers in between, discs of each shaft being interleaved with the discs of the adjacent shafts to provide narrow gaps therebetween
Environmental Control Apparatus