Tends equipment that filters acid liquor from slurry and dehydrates residual materials for further processing: Opens feed valves and starts rotary drum that filters liquor from slurry.
Turns valves to transfer residue to dehydration unit. Adjusts controls to regulate temperature, pressure, and speed of material flow as specified to dry residue. Collects samples of acid liquor and residual materials for laboratory analysis. May be designated according to material processed as Phthalic-Acid Purifier (chemical).
