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Wood System Solution

General Manufacturing

Solutions for Wastewater Treatment & Management

FRC Components

Screen, Reactor Tanks, Sludge Dewatering, High-Rate DAF

Project Description

FRC designed a wastewater treatment system for a large, Swiss-based wood manufacturer. The production of fiberboard was generating wastewater with extremely high Total Suspended Solids (TSS) that needed to be reduced to meet city discharge limits. The design used an Inclined Plate Separator (IPS) to remove high density suspended solids from the wastewater via gravity. The resulting effluent was sent back to the chip washer for water re-use. The concentrated wastewater from the inclined plate separator was sent to DAF for final separation, where the DAF sludge is dewatered for maximum cost efficiency.

The FRC Solution

  • Static Screen – Remove small pieces of upstream of the Inclined Plate Separator

  • IPS – Suspended solids flow down plate surfaces while clear water is discharged from the top

  • Reactor Tanks – Chemicals dosed to precipitate the colloidal solids

  • DAF – Float the precipitated solids, yielding clean effluent water

  • Sludge Dewatering – Increase dry solids content of the DAF sludge, reducing sludge hauling costs

Parameter

Design Data

Flow (gpm)

90

Flow (m3/h)

20.5

TSS (mg/L)

20000


Design Data


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