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Asheville, NC, United States

Mayer E.,E. Mayer Filtration Consulting LLC | Lipke S.,Passaic Valley Sewerage Commissioners PVSC | Scholtyssek P.L.,Putsch United States Inc | Eley M.,PVSC
American Filtration and Separations Society Spring Conference 2013 | Year: 2013

Passaic Valley Sewerage Commissioners (PVSC) have experienced some sludge dewatering problems with their five 2 × 2 meter standard recess presses, mainly: ductile iron (DI) plate corrosion and scaling, long dewatering cycles at times, the lack of suitable lab tests for predicting performance, and filter cloth blinding. A previous paper1 addressed the first three issues but the last issue of cloth blinding was only alluded to via simple laboratory tests. As a consequence, this paper will discuss why cloth blinding is an issue, discuss Capillary Flow Porometry (CFP) results, and how to predict when useful cloth life is expended (since blinded cloths cause significant downtime and difficulty in changeout and plate cleaning). Source


Mayer E.,E. Mayer Filtration Consulting LLC | Scholtyssek P.,Putsch United States Inc | Lipke S.,Passaic Valley Sewerage Commissioners | Eley M.,Passaic Valley Sewerage Commissioners
AFS 2012 Fall Conference: Solid-Fluid-Separation - Innovation in Research and Applications | Year: 2012

Passaic Valley Sewerage Commissioners (PVSC) have experienced some sludge dewatering problems with their five 2 x 2 meter standard recess presses, mainly: ductile iron (DI) plate corrosion and scaling, long dewatering cycles at times, the lack of suitable lab tests for predicting performance, and filter cloth blinding. A previous paper (Ref. 1) addressed the first three issues but the last issue of cloth blinding was only alluded to via simple laboratory tests. As a consequence, this paper will discuss why cloth blinding is an issue and when to predict when useful cloth life is expended (since blinded cloths cause significant downtime and difficulty in changeout and plate cleaning). Source

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