Designed to reduce the amount of sludge produced and related water losses, Actiflo® HCS (for High Concentration Sludge) is an Actiflo system equipped with an outside recycling loop.
ACTIFLO® HCS’ principal feature is that it comes with a specific hydrocylone* and an external recirculation loop.
After settling, the sludge/microsand mixture is pumped to the hydrocyclone where the microsand is thoroughly washed before being injected back into the flocculation tank. The flow of sludge is directed in part towards the recirculation loop with the other part being discharged. Thanks to a fine regulation system, Actiflo HCS reduces the amount of sludge produced by 2 to 3 times, while still maintaining a high clarification level.
Benefits
- A 50 – 80% reduction in sludge volume
- Water losses reduced to under 0.5%
- A reduction (in size and number) of the facilities used to treat dirty water/sludge from the Actiflo
- Easy to implement in refurbishing projects
Applications
ACTIFLO® HCS is applicable to several industrial and municipal situations:
Municipal applications
- Treatment of river water and turbidity peaks
Industrial applications
- Effluents treatment
- Process water production
Performances
| Flow m3/h | Turbidity | 22 | HCS Valves % open |
Cyclone Feed m3/h |
Sludge DIscharge | 22 | |
|---|---|---|---|---|---|---|---|
In |
Out | m3/h | mg/l | ||||
| Actiflo HCS | 43 | 7 | 0.8 | 0 | 2.5 | 2.4 | 980 |
| Actiflo | 44 | 6 | 0.8 | 42 | 2.5 | 0.26 | 9.200 |
Some Municipal References
Municipal drinking water
- Chomedey, Laval (Greater Montreal), Canada, 2013, 273,000 m3/day Treating river water/high turbidity peaks, decanting rate: 68 m/h
- Pont Viau, Laval (Greater Montreal), Canada, 2013, 135,000 m3/day Treating river water/high turbidity peaks, decanting rate: 40 m/h
- Gitanmaax Band Village, Hazelton, Indian Reserve, Canada, 2012, 1,400 m3/day Treating river water, decanting rate: 55 m/h
- Okotoks Ground, Canada, 2011, 22,000 m3/day, Treating turbidity peaks, decanting rate: 54 m/h
Some Industrial References
Industrial applications
- Japan Nippon Steel & Sumitomo Metal, Kimitsu, Japan, 2014, 14,000 m3/day Treating effluents (metals, coke and coal dust),decanting rate: 120 m/h
- Nippon Steel & Sumitomo Metal, Kimitsu, Japan, 2014, 40,000 m3/day, Treating effluents (metals, landfill leachate, urban rain water), decanting rate: 100 m/h
- CEZ Pocerady, Czech Republic, 2011, 24,000 m3/day Treating river water to produce process water for boiler cooling (in the energy sector) Actiflo HCS, 40 m/h
