[ Product listing ](/solutions/technologies-water-wastewater-treatment " Product listing") ## #### 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. [CONTACT AN EXPERT](https://www.veoliawatertechnologies.com/en/contact) [Overview](#1) [Applications](#2) [Product range and Resources](#3) ## Overview 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. #### ACTIFLO HCS ![](/sites/g/files/dvc3496/files/styles/default/public/image/2018/12/Actiflo-HCS-scheme-EN.jpg.webp?itok=lNLIfoYC) ### 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 ### PERFORMANCES | | Flow m3/h | Turbidity | HCS Valves % open | Cyclone Feed m3/h | Sludge DIscharge | |---|---|---|---|---|---| | | | In | Out | | | m3/h | mg/l | | **ACTIFLO** | 43 | 7 | 0.8 | 0 | 2.5 | 2.4 | 980 | | **ACTIFLO HCS** | **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 ## Applications ### 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 ## Product range and Resources Product range [ ![actiflo mini hero banner](/sites/g/files/dvc3496/files/styles/vwt_product_content_push/public/image/2020/01/ACTIFLO%20MINI%20left%20view.png.webp?itok=1FzdwVhl) ### Actiflo® Pack Mini A very compact and fully standardized clarifier package plant used for various applications such as drinking and process water, municipal and industrial wastewater and reuse. Its net flow is from 3 to 7 cubic meters per hour (m3/h) (drinking and process water) and from 3 to 15 m3/h (wastewater). Sedimentation - Clarification - Flotation ](/technologies/actiflo-pack-mini) [ ![](/sites/g/files/dvc3496/files/styles/vwt_product_content_push/public/image/2018/12/8312_weftec1.jpg.webp?itok=_qoj_kFT) ### BIOACTIFLO™ BIOACTIFLO™ is a process designed for treatment of stormwater and reduction of its soluble BOD. Aerobic Wastewater Treatment ](/technologies/bioactiflo) [ ![](/sites/g/files/dvc3496/files/styles/vwt_product_content_push/public/image/2018/12/Actiflo-Softening.jpg.webp?itok=GRoxbdjm) ### ACTIFLO® Softening A single compact treatment unit designed specifically to remove hardness and alkalinity to improve water quality for municipalities and industries. It combines both clarification and softening processes to achieve optimal water treatment. Softening ](/technologies/actiflo-softening) [ ![](/sites/g/files/dvc3496/files/styles/vwt_product_content_push/public/image/2021/04/Actiflo-Pack-push.jpg.webp?itok=hrELGa8p) ### ACTIFLO® Pack ACP2 (series) A very compact and fully standardized clarifier package plant used for various applications such as drinking and process water, municipal and industrial wastewater, and reuse. Its net flow is from 21 to 1,441 cubic meters per hour (m3/h). Sedimentation - Clarification - Flotation ](/technologies/actiflo-pack-acp2-series) [ ![](/sites/g/files/dvc3496/files/styles/vwt_product_content_push/public/image/2018/12/Illawara-Actiflo-Duo.jpg.webp?itok=6OFWEj4J) ### ACTIFLO® Duo A two-in-one, ready-to-use system designed to adjust to substantial fluctuations in wastewater flows. It can operate as a conventional lamella clarifier in times of low flow or as a coagulation/flocculation with settling ballasted and micro sand in times of high flow. Sedimentation - Clarification - Flotation ](/technologies/actiflo-duo) [ ![](/sites/g/files/dvc3496/files/styles/vwt_product_content_push/public/image/2018/11/actiflo_hero_banner.png.webp?itok=MnZv3qYJ) ### ACTIFLO® Disc A polishing solution designed to achieve high removal levels of suspended solids and phosphorus in municipal and industrial wastewater for water reuse. It combines two treatment processes: a conventional Actiflo phase followed by a rotating disc filter polishing system for tertiary treatment. Filtration ](/technologies/actiflo-disc) [ ![ACTIFLO® CARB at Lucien Grand ](/sites/g/files/dvc3496/files/styles/vwt_product_content_push/public/image/2018/12/actiflocarb2.jpg.webp?itok=-SH--TL9) ### ACTIFLO® Carb This technology combines the features and the efficiency of standard Actiflo with the adsorption qualities of activated carbon to remove compounds that are refractory to water clarification. Thanks to powdered activated carbon, it ensures the production of high-quality drinking. Adsorption - Extraction ](/technologies/actiflo-carb) [ ![](/sites/g/files/dvc3496/files/styles/vwt_product_content_push/public/image/2018/12/ActifloLaunderFlowretouche.jpg.webp?itok=ql6GLGuM) ### Actiflo® A range of products offering a high-rate and compact water clarification process for the production of drinking water, process water and the treatment and reuse of wastewater. Adsorption - Extraction ](/solutions/technologies/actiflo) Resources [PDF ACTIFLO® HCS Datasheet (199.65 KB) ](/sites/g/files/dvc3496/files/document/2022/07/220185_Fiche_ActifloHCS_EN_LR.pdf)