Rectangular Clarifier

Proven gravity sedimentation for continuous solid-liquid separation in STP and ETP plants
The Rectangular Clarifier is a high-efficiency sedimentation tank designed to separate suspended solids from wastewater or treated effluent through gravity settling. Incoming wastewater enters at one end, flows at a controlled velocity through the tank, allowing solids to settle to the floor. A mechanical chain-and-flight or bridge-mounted scraper continuously moves settled sludge to a collection hopper, while a surface skimmer removes floating scum and grease. Clarified effluent overflows a weir at the far end for further treatment or discharge.

How It Works

Wastewater enters through a distribution inlet designed to minimize turbulence and promote uniform flow. Suspended solids settle progressively as water moves toward the outlet weir. The floor scraper mechanism — driven by a low-speed geared motor — continuously pushes settled sludge toward the sludge hopper. Surface scum is collected by a skimmer blade and removed separately. Clarified water exits over an adjustable effluent weir.