Struvite Screw Presses Removal Trial

Based on the lab supervisor’s recommendation, the plant ordered two 55 gallon drums for a plant trial on the screw press. They set up a spray system to meter  on the outer surface of the screw press. During the first five (5) days of the struvite removal trial, plant operations noticed that the openings on the screens were getting cleaner. They reduced the cleaning cycle from continuous spraying to 30 minutes of spraying at the end of operations each day. Plant operations observed that the screw press’ cake solids were higher and they had a lower dosage of polymer per dry ton. Plant operations deemed the trial a success.