i-DW

The range of Alfa Laval i-DW 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.

阿法拉伐i-DW系列卧式离心机-Alfa Laval i-DW series horizontal centrifuge

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-DW 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.

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Iedomājieties ilgtspējīgāku pasauli. Pasauli, kurā ir nepieciešams mazāk, lai ražotu vēl vairāk. Pasauli, kurā mēs efektīvi apmierinām pieaugošās enerģijas vajadzības un vienlaikus samazinām CO2 emisijas. Iedomājieties pasauli, kurā mēs varam izmantot dabas resursu spēku, vienlaikus tos saglabājot. Alfa Laval mēs ne tikai iedomājamies šo pasauli. Mēs to veidojam kopā ar saviem klientiem un partneriem.

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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-DW 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.

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With industry-leading wastewater technology and expertise based on the experience from thousands of installations, we can help analyse your unique situation and select the optimal equipment model, configuration and services for your needs and budget.

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