Walla Walla: Scale Returned When the Unit Was Off
A cleaned belt press drum at Walla Walla stayed struvite-free for eight weeks, then scaled again within weeks of the QEQI® unit being switched off.
Application: Struvite
Utah Screw Press: 30 Hours of Cleaning Down to Four
A Utah plant stopped $8,000 a month of struvite chemical and cut screw press cleaning from 30 hours to under four with one QEQI® Custom 8 inch unit.
Tulsa: No New Struvite on the Test Drum in 90 Days
Tulsa Southside WWTP kept a cleaned belt press drum free of new struvite for 90 days, then funded treatment for the header serving all five presses.
Orlando Belt Press: Pan Scale 5 mm to 1 mm in 150 Days
Orlando’s Water Conserv II ran belt press No. 5 for 150 days without cleaning, cutting pan scale from 5 mm to 1 mm and polymer use by around 20%.
London Ohio: Half the Roller Holes Open in 35 Days
The City of London Wastewater Department cleared over half its belt press first-roller holes in a 35 day trial, with no chemical or mechanical cleaning.
Luton WWTP: No New Struvite Scale in Centrate Lines
A QEQI® unit prevented further struvite scaling in centrate lines at Thames Water’s East Hyde works in Luton.
Denver: Transfer Pump Struvite Cut, Four Units Bought
Denver’s Robert W. Hite Treatment Facility softened heavy transfer pump struvite over 60 days, then installed four more QEQI® units.
Augusta Belt Presses: $4,000 a Month in Chemicals Cut
The J. P. Messerly plant in Augusta cut anti-scalant dosing to zero on two belt presses with one QEQI® i160, saving roughly $4,000 a month.