PoultryUSA - November 2017 - 7
using an interactive, electronic
process control and data management system. The software also
enables tracking of operations and
maintenance services and regularly scheduled activities. Automated
and manually entered data can be
quickly communicated, analyzed
"The MES holds data, so if we
were to ever have the best run ever
or the worst run ever, we can investigate to see out of all the things we
have set, what was different or not
quite right," Matt Jolliff, Keystone's
plant manager said. "We also have
very competent people maintaining the hardware and software. The
MES is not proprietary, but the setup is customized for us."
Losses to wastewater can be
estimated from yield calculations.
The wastewater management
software is provided and managed by O'Brien & Gere (OBG), a
New York-based engineering firm.
OBG also operates and maintains
the wastewater pre-treatment system through on-site operators and
off-site monitoring. OBG is also
responsible for the confidentiality, integrity and availability of
all documents, although Keystone
owns the system.
"We run a variety of samples
every day and enter those, but the
process readings are grabbed by
the software," Steve Smith, OBG's
on-site operations supervisor, said.
The pre-treatment system
handles an average flow of 350,000
gallons per day, with the majority
of the wastewater volume com-
ing from third-shift sanitation.
Primary solids removal is accomplished using a rotary drum screen.
An equalization basin can balance
the average flow over a day and
a half. A dissolved air flotation
(DAF) unit with chemicals subsequently removes oil and grease.
A secondary biological process is used to lower the five-day
total biochemical oxygen demand
(TBOD), total Kjeldahl nitrogen
(TKN) and total phosphorus (TP).
The flow is distributed between
two adjacent aeration basins to
remove TBOD, phosphorus and
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November 2017 ❙ www.WATTAgNet.com
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