CARL J ZIMMERMANN
Broker in Ludlow, MA

4165283, Aug 21, 1979

Mar 29, 1977

5/782435

Roland E. Weber - Holyoke MA
Carl J. Zimmermann - Ludlow MA

Industrial Pollution Control Corp. - Ludlow MA

B01D 2126, B01D 2942

210111

The present invention relates to a multi-stage, single vessel, purification system for removing solid particles from liquids. Within the central portion of the vessel is a deceleration chamber having flow control means. About and substantially coextensive with the deceleration chamber is a filtering chamber. Depending well into the filtering chamber are a plurality of septums preferably coated with filter aid. Below the deceleration and filtering chambers is a settling chamber, and beneath the vessel is an expulsion device. A contaminated liquid is fed into the deceleration chamber and decelerated. In this chamber the lighter solid particles rise to the top of the liquid where they are removed, while the heavier density particles settle downwardly. As the liquid moves downwardly from the deceleration chamber it essentially displaces liquid in the settling chamber upwardly into the filtering chamber. In so doing the change of direction of liquid movement also causes the heavier particles to settle downwardly.