A few years ago, The Metropolitan Wastewater Reclamation
District (Metro), which operates the 80MGD Robert W. Hite treatment plant in Denver , CO
The study was so successful,
with average baseline savings over 13%, (apprx $135K annual power
savings) Metro purchased BioChem's BIOS
process control system. See a technical
paper describing this study here.
Recently, BioChem was called back to Denver (actually, most of the work was
performed remotely at little cost) to add
a feature, "automatic ammonia removal rate" to the BIOS software in
order to allow for a constant residual ammonia level 1.0 mg/l. If this small, (but precise) amount of
ammonia is left over at the end of the process, then ammonia dosing, to
facilitate chloramine disinfection can be entirely eliminated. Now
that's real process control! As
part of this update, BioChem also added a feature allowing for the substitution
of a colorimetric ammonia analyzer's signal (for ISE), at the operator's
discretion. BioChem and Denver 's Metro District,
will continue their relationship not only as partners, but as pioneers for ever
improving 21st Century process control.