Lamellar Decanter is a Solid-Liquid separator based on Sedimentation process where the entire space in the Clarifier is divided into several integral sections or chambers. One side of each blade provides the settling surface. The untreated inlet stream enters the Lamellar and transverses through feed ducts longitudinally along the Lamella tank.

Solids now separated descend a short distance onto the settling surface formed by numerous blades and continue to slide down to Collection hopper. Clarified water is collected all across the Decanter Section through perforated double wall pipes. Water level is maintained through external Adjustable Weir Suitable Flocculation aids are used to enhance efficiency of removal.

WOCK's LAMELLAR DECANTER

CONVENTIONAL CLARIFIER

• Low Hydraulic retention time of only 30minutes makes the unit very compact, light weight with high specific clarification (Volumetrically less than 1/5 th size).
• Most modern clarification system with efficiency more than 85-95%.
• Low retention time eliminates chances of septicity.
• Easy to clean, pre-fabricated design in shift able leading to fast erection in small area.
• Settled sludge is drained off by gravity.
• Quick transfer of settled sludge to aeration tank eliminates chances of anaerobic shock to micro-organisms leading to better biological growth.
• Thin blade separation cell protects the escape of micro-flocs and rising sludge in the treated water.
• Low power consumption, no internal moving parts requiring maintenance
• Low capital and operating cost. No civil work required.
• No gear boxes, no Lubrication.

• High Hydraulic Retention time of more than 2 hours makes the system bulky.
• Efficiency of sedimentation processes is mostly not beyond 65%.
• Effluent turns septic and thereby leads to foul smell due to high retention time.
• Permanent huge civil constructions require a large area.
• It requires sludge transfer pump.
• Anaerobic conditions at times develop which upsets the Biological system.
• Works by sedimentation alone, rising sludge is difficult to handle.
• Power required for the movement of internal mechanism and sludge transfer pump.
• Specialized long duration civil works involved.
• Daily maintenance of Drive System.