i-Dec
The range of Alfa Laval i-Dec decanter centrifuges is ideal for continuous sludge dewatering and thickening from municipal and industrial wastewater treatment as well as from potable water treatment, when the main focus is reliability, cost-efficiency and simple operation with medium capacity and dry solids.
Fundamental performance in a cost-efficient way
- Small footprint
- Low power consumption
- Low cost of ownership
- Low noise emission
Like other Alfa Laval decanters, i-Dec makes use of certified technology to offer high quality, robustness and easy serviceability. The innovative design, incorporating patented solutions, operate in fully enclosed process sections.
How it works - working principle of this decanter centrifuge for sludge dewatering and thickening
Separation takes place in a horizontal cylindrical bowl equipped with a screw conveyor. The feed enters the bowl through a stationary inlet tube and is accelerated smoothly by an inlet distributor. The centrifugal force that results from the rotation then causes sedimentation of the solids on the wall of the bowl.
The conveyor rotates in the same direction as the bowl, but slightly slower, thus moving the solids towards the conical end of the bowl. A special Liquid Lock conveyor design (patent pending) accelerates light particles before discharge for optimum separation. It also facilitates the small footprint.
Separation takes place throughout the entire length of the cylindrical part of the bowl. Relatively low G-force is needed for the i-Dec decanter to deliver good performance in terms of capacity and cake dryness. This contributes to low power consumption.
The clarified liquid leaves the bowl by flowing out of the casing via special patented energy saving Power Tubes that enable lower speed of discharged effluent. The cake leaves the bowl through the solids discharge openings into the casing.
The features that make the difference
Everything you need to meet your challenges today – and tomorrow
With more than 60 years of experience in solid-liquid separation, Alfa Laval knows what it takes to deliver high-performance solutions for the wastewater industry. Packed with features unique to Alfa Laval, our decanter centrifuges provide improved efficiency, reliability, and serviceability with each advancement.
FeedProtect
Feed zone with replaceable wear protection
The uniquely designed FeedProtect feed zone ensures gentle product acceleration and minimal turbulence, resulting in low abrasion and power consumption. The FeedProtect design is equipped with replaceable wear-protection liners, ensuring high uptime of your decanter centrifuge.
DeepPond
High separation performance and energy efficiency
Increasing the pond depth inside the bowl creates a larger volume, leading to longer retention time and improved separation performance. The DeepPond design delivers high solids dryness and clean centrate from your decanter centrifuge, even at high flow rates.
PowerTubes
Liquid outlet with pond depth regulation and energy recovery
PowerTubes adjustable outlets are designed to release the liquid tangential to the rotating direction, supporting the bowl rotation and thereby recovering energy, and minimizing power consumption.
FlightProtect
Wear protection for conveyor flights
FlightProtect is an application-specific wear-protection coating for conveyor flights that preserves the integrity of each flight and prolongs its service life.
LiquidLock
Floating solids accelerator
A special device that accelerates floating solids from the surface into the solids layer. This results in liquids leaving the decanter centrifuge being of better quality.
Løsninger for sirkulær økonomi
Flere og flere renseanlegg oppdager fordelene med en sirkulær, helhetlig tilnærming til rensing av avløpsvann. Kostnadsbesparelser, redusert miljøpåvirkning og nye inntektsstrømmer fra gjenvunne ressurser er bare noen av disse. Hvert renseanlegg er unikt og har sine egne utfordringer og muligheter. Med vår ekspertise innen prosessering og vårt brede produktspekter kan vi hjelpe deg med å skifte til en sirkulær ressursflyt. Uansett om du er entreprenør, designer eller anleggsoperatør, kan vi hjelpe deg med å finne den optimale løsningen for ditt spesifikke prosjekt.
Sats på bærekraftige løsninger
Se for deg en mer bærekraftig verden. En verden der det trengs mindre for å produsere enda mer. En verden der vi effektivt møter vårt økende energibehov og samtidig reduserer CO2-utslippene. Tenk deg en verden der vi kan utnytte kreftene i naturressursene, samtidig som vi bevarer dem. Hos Alfa Laval ikke bare forestiller vi oss denne verdenen. Vi bygger den sammen med kundene og partnerne våre.
La oss hjelpe deg
Med bransjeledende renseteknologi og ekspertise basert på erfaring fra tusenvis av installasjoner, kan vi hjelpe deg med å analysere din spesielle situasjon og velge optimal utstyrsmodell, konfigurasjon og tjenester tilpasset behovene og budsjettet ditt.
