Having worked at paper mills ...

Published May 6, 2020 16:51 by John Salonich, Vice President / Managing Director

Having worked at paper mills in the past, I would now add fiber recovery to the wastewater process before the EQ tank or primary clarifier, using hydrocyclones or vortex screening systems, they will remove fiber, add DO, lower BOD and COD and enhance settling in the primary clarifier making it more efficient. Recovered fiber can be diverted back to sluice box of fordrinier or cylinder whichever process is used. This will helps in equalization basin and level out influent flow characteristics.

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John Salonich Thank you very much for your answer. For the primary treatment before the equalization basin, I am planning to have coarse screen followed by microstrainer for fiber recovery, and then primary sedimentation. I believe they will significantly reduce suspended solids and BOD5 before going to the equalization basin.

Published May 6, 2020 20:30 by Hung Bui, Graduate Student. 1-year experience in water and wastewater sectors.

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Do not use wedgewire screens as they will "blind" with fibers unless they have spray cleaners to prevent blinding.

Published May 6, 2020 20:50 by John Salonich, Vice President / Managing Director

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