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WAS Thickening Product Solution

Municipal Wastewater

Solutions for Wastewater Treatment & Management

FRC Components

Open-Style DAF

Project Description

The northern municipality of Luverne's existing secondary clarifier thickened the Waste Activated Sludge (WAS) generated from an oxidation ditch process to yield 0.5-1% dry solids. The anaerobic digestor which followed the thickening process had become hydraulically overloaded prompting a need to further reduce WAS volume.   FRCs design provided a DAF thickener after the clarifier to further reduce WAS volume and achieve 4-5% dry solids before sending it to the anaerobic digestor.

The FRC Solution

  • DAF – Thickens the waste activated sludge

Parameter

Design

Effluent

Flow (gpm)

15-20

-

% Dry Solids

0.5-1

4-5


Design Data


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