Case Study 2:
Municipal Treatment with Centrifuge Dewatering

Treatment Plant

Conventional activated sludge treatment, with primary and secondary clarification and chemical phosphorous removal.

Population serviced: 600,000
Average daily flow:  100 MIGD(450 MLD)
Sludge production: 30 t/day


Equipment: High solids Sharples centrifuges
Old Mixer: Direct in-line addition
New mixer: 6” OPTIFLOC™
Flow: 100 – 130 IGPM (7.5 – 10 L/s)
Sludge type: Anaerobically digested
Composition: 55% primary
45% secondary
Conditioner: Allied Colloids, dry, cationic

Centrifuge Dewatering


Dosages to achieve plant targets of: Conventional Mixing Optifloc Mixing
Cake Solids ≥ 30% TS 7.9 kg/t 7.0 kg/t
Centrate TSS ≤ 1000 mg/L 8.6 kg/t 6.6 kg/t
Cake ≥ 30% TS and Centrate TSS ≤ 1000 mg/L 8.6 kg/t 7.0 kg/t


If you would like to know how the Optifloc™ technology can improve your process Contact Us today!