Many schemes are already implemented in slaughterhouses
for the reuse of water for non-potable
uses within the plant. Most of these involve no treatment
of the water prior to its reuse. Kane &
Osantowski (1981) described a pilot-plant study in
which treated wastewater was passed through chemical
flocculation/clarification and dual media
filtration prior to further upgrading by either ion
exchange, reverse osmosis (RO) or electrodialysis.
All the latter three processes achieved greater than
90% reduction of TDS, however, the use of RO was
the most economic, with estimated capital and operating
costs for a 3.8 M1/day (1 MGD) system being
at most 40 and 68%, respectively, of those of the
other two processes. Furthermore, it required only
half the space. It is not known whether the system
has been installed at full scale.