Comparison of the Effectiveness and Economic Costs of Two Production Scale Polyacrylamide Assisted Solid/Liquid Separation Systems for the Treatment of Liquid Swine Manure

Abstract

This study evaluated and compared the effectiveness and economic costs of a polyacrylamide (PAM) assisted continuous gravity belt thickener and a PAM assisted inclined stationary gravity screen separator equipped with a backwash spraybar, each in tandem with an inclined stationary gravity screen-roll press separator to separate the solid and liquid components of liquid swine manure (raw slurry) under production scale operating conditions. The separation systems were operated from