The Schreiber Clarifiers are versatile and very durable peripheral drive clarifiers. The peripheral drive system utilizes leverage rather than center-drive torque to rotate the scraper and skimming assembly, resulting in a simplified mechanical system. The equipment necessary for the continuous removal of floatables and settled solids is suspended from either a rotating bridge or, for smaller units, a lightweight rotating beam arm. The rotating skimming equipment removes floatables regardless of wind direction, and the helical scrapers used on Schreiber Peripheral Drive Clarifiers transport settled solids to the center of the basin in a single revolution. Additional accessories such as effluent weirs, baffle plates, and return sludge pumps ensure compatibility in all applications. The Schreiber design allows for the hoisting of all such equipment above the water level for inspection or maintenance without having to dewater the basin.

Schreiber Peripheral Drive Clarifier equipment is hot-dip galvanized after fabrication for corrosion protection. No field painting is required. Options include Weir washing systems, fabricated flocculation tanks and inlet feed wells.

Please contact Schreiber at 205-655-7466 or email to receive a quote or to obtain purchasing information.


  • Wastewater Primary Clarification
  • Wastewater Secondary Clarification
  • Sludge Thickener
  • Anywhere a clarifier is needed!


  • Schreiber was first to bring helical Scrapers to the USA
  • Helical Scrapers move sludge to center hopper in 1 revolution or less
  • Retrievable arms allow maintenance without dewatering tank
  • No torques switches required on Peripheral Drive Clarifiers
  • Wheels act as natural clutch by spinning if obstruction is encountered
  • Bridge support equally split between center bearing and outside wall
  • With influent of 4000 TSS, Clarifier effluent is <10 TSS without chemicals