Conventional clarification equipment requires 10 times more physical area to even begin to approach the same settling capacity of a Neotech Lamella Gravity Settler. This means faster settling in one-tenth space because the effective gravity settling area of the inclined plate design equals each plate are projected on a horizontal surface. Up to ten square feet of settling area becomes available for each square foot of physical area occupied by the unit. Loading rates normally used for the design of conventional settlers can be applied to the sizing of a Lamella Settler by substitution projected area for the surface settling area of a conventional clarifier.
The compact design minimizes hydraulic disturbances caused by wind or temperature changes. Balanced flow distribution ensures equal flow to each plate and across the plate surface area preventing short-circuiting.
Units and plate packs arrive at the job site factory assembled which reduces installation time and lowers installed costs. Minimal moving parts mean low maintenance costs.
How it Works:
Influent enters the lamella system and flows downward through the inlet chamber in the center of the unit and enters the plates through side entry plate slots. The countercurrent design, unlike typical bottom feed designs, reduces the risk of disturbing previously settled solids. As the liquid flows upward, the solids settle on the inclined, parallel plates and sludge into the sludge hopper at the bottom. Further thickening of the sludge is achieved in the hopper due to compression in the quiescent zone achieved by the side feed design.
The clarified liquid leaves the plate assembly through orifices or weirs at the top and is distributed into the collection channels leading to the clarified water outlet. This creates a pressure drop across the collection channels which ensure uniform flow distribution across the plates in order to utilize the full area for settling.
Structural steel support legs
Epoxy painted carbon steel tank
Individually removable FRP plates
Adjustable effluent weir plates
No moving parts, thereby minimizing maintenance
Continuous operation possible for any length of time without shutdown
Each plate is constructed of FRP corrosion resistant material
Lifting arrangements are not required for plate installation or inspection individual Lamella plates can be easily removed and installed during installation or maintenance by a single operator without
the need to shut down the system
Internal flow feed ducts ensure even distribution of water to each and every plate
controlling velocity and thereby minimizing turbulence
Adjustable weir plates ensure even collection of the treated water without short circuiting
The tank and structural support design is completely self supporting for continuous working
conditions and is also compatible with supporting walkways, ladders etc.
The flash mix cum flocculation tank is a one piece configuration for bolt up to the lamella tank in the field.
The Lamella Clarifier system design is such that it does not build up deposits, thereby minimizing the frequency of cleaning as well as other maintenance problems usually faced with conventional clarification
NeoTech Water Solutions supplying the industry’s highest quality and most reliable clarifier mechanisms for basic bridge or pier supported mechanisms to those with the most complex and demanding special requirements. Our drive units are high performance and deliver high torque. Standard Designs exist for basic mechanisms for a wide range of tank sizes. These standard mechanisms are effective, low cost and meet all design codes with minimal engineering costs. Bridge supported mechanisms are supported by a structural bridge that spans the tank diameter and is generally used for the lower end of the range of clarifier diameters.
High torque drive
Hydraulic or Electrical Drive System
Forward & Reverse (Optional)
Variable speed (Optional)
Manual or Motorised Central Pipe Lifting arrangement
High quality components
Indoor or Outdoor operation
Central Drive Unit
Bridge spanning full tank diameter (with Center Shaft) / half the tank diameter (with Center Cage)
Rake arms spanning full tank diameter
Range of rugged Central Drive heads with torque overload sensing Surface skimmer (Optional)
Designs upto 30M diameter (Full Bridge) and (Half Bridge)
Lamella / Tube Settler options available for high rate clarification
Peripheral Drive Unit:
Rotating Bridge spanning half the tank diameter or more
Clariflocculator design with 2 / 4 Flocculation paddles
Rake arms suspended from the bridge
Peripheral drive designs with Rubber / PU tyred wheels running on concrete wall / Steel wheels running on rails
Surface skimmer (Optional)
Designs upto 60M diameter and above
Central Drive Clariflocculator:
Fixed Bridge spanning full/half tank diameter. Rake arms spanning the full tank diameter
Centrally driven rake arms through rugged drive head
Designs with 2/4 Floc Paddles with independent drives
Alternate Single flocculator drive with concentric dual stack drive design upto 40M diameter and above
High Rate Solid Contact Clarifier - Reactor Type Features:
Mixing, Flocculation and Clarification in a SINGLE unit
High overflow rates and shorter detention time vs conventional clarifiers resulting in smaller footprint
Utilises the solids contact principle plus unique “controlled recirculation” bringing previously formed flocs “in contact” with the raw water.
Varied Applications in Surface Water Treatment for Removal of Turbidity, Suspended Solids, Softening, Colour, Taste and Odour; Primary and Tertiary Treatment of Municipal wastewater, Pulp & Paper, Metal Hydroxide Removal, Steel Waste etc.
Half Bridge with Bottom Feed:
Bridge spanning half the tank diameter & Rake Arms spanning full tank diameter
Rugged Drive Head with torque overload with independent mixer drive.
Feed from bottom of tank connecting to central draft tube
Available for sizes upto 50M and above
Full Bridge with Side Feed:
Bridge & Rake Arms spanning the tank diameter
Dual Stack drive arrangement with torque overload
Feed from side connecting to central draft tube
Available for sizes upto 18M and above
Suction Clarifier What is it:
A clarifier mechanism employing a unitube header (a specially designed rectangular shaped arm provided with orifices) in place of conventional rake arms, which sucks the settled sludge hydraulically for further withdrawal.