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High Rate Solid Contact Clarifier

HRSCC

We are manufacturing world class Solid Contact Clarifiers that have capacity to act as both an improved flocculation device and high rate chemical precipitator. Here, mixing, internal solids recirculation, gentle flocculation and gravity sedimentation are all combined within single unit. The solid contact clarifiers mix the influent flow with previously settled solids within the draft tube. In this, the gentle mixing within the reaction well promotes agglomeration of floc particles and chemical precipitates. Then, the aggregated solids settle out more quickly in the clarification area. In the solid contact clarifiers, clarified overflow is removed through a radial launder system that draws water from the complete surface area to avoid solids carryover caused by uneven velocity currents. This Clarifier is a high rate, solid contact, sludge recirculation in minimum space and using a minimum amount of chemicals, produces an effluent of the highest quality. Used for clarification, lime softening, Silica reduction or organics reduction of water & waste waters containing suspended solids, colors and organic impurities. It provides means for chemical addition and mixing, flocculation and up flow clarification in a single unit.
The mechanism would be of centrally driven type with fixed full bridge spanning the tank diameter with necessary walkway and handrails to access drive unit at the centre.
This Clarifier is a high rate, solid contact, sludge recirculation in minimum space and using a minimum amount of chemicals, produces an effluent of the highest quality. Used for clarification, lime softening, Silica reduction or organics reduction of water & waste waters containing suspended solids, colors and organic impurities. It provides means for chemical addition and mixing, flocculation and up flow clarification in a single unit.

  • The mechanism would be of centrally driven type with fixed full bridge (Lattice type) spanning the tank diameter with necessary walkway and handrails to access drive unit at the centre.
  • Two more truss fabricated structures shall be placed at 90º to the bridge spanning the tank diameter to help suspend and hold the drat tube and detention hood.
  • Clarifier Drive unit consisting of Drive head (Worm shaft & worm gear) connected to Gear Box by Chain & sprockets and the Gear box connected to Motor by Love joy Coupling.
  • Main Vertical solid inserted into the Clarifier Drive head gear bore and keys locked, suspended freely, flange facing downwards.
  • An intermediate Scraper arm shaft made out of Heavy duty pipe suspended from the vertical shaft.
  • Two Scraper arms, rigidly fabricated to sweep the tank floor with Scraper blades, Neoprene Rubber squeezes and Strips to hold Squeezes.
  • Suitable Central Sludge well scraper.
  • Recirculation system will be placed between the top and bottom portions of the bridge.
  • Main Nylocast driven gear bolted to the drive bearing and seated on the main vertical shaft between the aforesaid pair of bearings.
  • Driven gear connected to the drive gear which is mounted on the Gearbox output shaft and input shaft connected to Motor by coupling.
  • Recirculation shaft made out of heavy duty pipes and bolted to the driven gear bottom face.
  • Impeller for recirculation bolted to the shaft.
  • Suitable diameter of Draft tube for dozing and mixing suspended from the bridge bottom and properly reinforced. Inlet nozzle with flange at the bottom tangentially placed for Feed entry.
  • Suitable diameter of Detention hood made out of FRP fixed for flocculation.

Features:

  • Low energy mixing for chemical reactions & formation of floc particles
  • Unique low shear high volume impeller
  • Gravity sedimentation clarification and enhanced flocculation in one unit
  • Consumes less chemical input
  • Low horsepower requirements
  • Requires less space than conventional flocculation and sedimentation train
  • Considerable savings in terms of tank age, civil work, and operational costs


Applications:

  • Pretreatment to conventional filtration
  • Acid mine drainage
  • Surface water clarification
  • Cold lime softening
  • Color removal
  • Pretreatment to membranes
  • Tertiary wastewater treatment
  • Phosphorous removal
  • Heavy metals removal

 

 

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