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Lamella Clarifier
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Industrial - Lamella Clarifier
The INDION lamella clarifier provides an effective answer for the clarification of water and waste water.
The lamella clarifier achieves solid-liquid separation by directing the liquid between a series of inclined plates called lamellae. The settling surface of each plate is equivalent to its horizontal projection. Lamellae are normally spaced approx. 50 mm apart, with the result that large settling surfaces are concentrated within a relatively small floor area.
Stacking the inclined plates results in the separator having upto ten times the clarification area of a conventional circular settling tank occupying the same floor space. In other words, for the same liquid flow, the lamella clarifier would occupy 1/10th the floor area of a conventional clarifier.
A number of standard sizes are available, sizes designated by the settling area. The capacity for each size depends on the type of solid being separated and can be determined experimentally using settling tests.
Salient Features
Flow entry - The flow enters from both sides of the plate. Distribution and entry velocities are minimum to optimise the hydraulic flow regime, resulting in full plate utilisation, maximum efficiency and better effluent quality.
Weir take-off - A weir launder provides an effective weir length. The weir has orifices on either side of each plate.
Removable plates - Individual plates are easily removable even during operation, making the unit very simple to maintain. The design offers flexibility to handle changes in influent characteristics.
Hopper arrangement - Several options are available for sludge storage. The standard arrangement is a hopper bottom with a structural support frame. A second option is to mount the lamella clarifier on top of a thickener in order to achieve a higher solids concentration, while providing a large sludge volume.
Advantages
- The design ensures laminar, stable flow and excellent effluent quality
- Modular design
- Occupies 1/10th of space required by conventional clarifiers
- No moving parts
- Material of construction can be steel or concrete depending on size
- The plates can be lifted easily and cleaned without operation shutdowns
Applications
Ash/scrubber waste treatment
Brine clarification
Clarification of water
Cool and other mineral separation
Filter backwash water recovery
Food & dairy processing & waste treatment
Iron removal
Metal hydroxides separation
Mill scale separation
Municipal water and waste treatment
Phosphorous acid waste treatment
Semi-conductor process waste treatment
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