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Viewing report
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Dissolved Solids Buildup with Water Recycling in a
Paperboard Mill. Edition No. 1
VDM Publishing House, Sep 2008, Pages: 124
The objective of this study was to investigate the
dissolved solids buildup with increased effluent
recycle in a paperboard mill. This was accomplished
by studying Solvay Paperboard, a paperboard mill
located in Solvay, NY, which conducted a water
reduction program by effluent recycling and thereby
reducing its fresh water consumption. Critical
substances, those that were most detrimental for the
process operation during effluent recycling, were
identified and their buildup in the effluent and
paperboard was investigated. To avoid the
complications of the various internal loops in the
process, a black box concept was adopted, in which
the mill was considered as a black box and a mass
balance was performed on each critical species
entering the mill with the input streams and leaving
the mill with the output streams. Solvay Paperboard
underwent a water reduction program in a series of
phases, mass balance models were developed for each
phase to predict the solids buildup in the effluent
and the paperboard taking into account the
partitioning or retention of the critical species in
the output streams during each phase.
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