THE PLANT’S OFFAL VACUUMING SYSTEM CAPTURES
BYPRODUCTS FROM 13 POINTS ON THE PROCESSING FLOOR TO BE PUMPED
DIRECTLY TO OFFAL TRANSPORT TRAILERS.
Durham. “Before any water hits
the floor in the blood room, work-
ers use a vacuum hose to pick up
all the blood they can. That cuts
out a huge portion of the BOD
and nitrogen from the wastewater
to be treated.”
installed on the vacuum pumps
that were added to the plant for
the dry offal removal system.
Water reuse at over 300,000 gallons
a day
“It’s important to realize that
pollution prevention works both
ways,” Faison said. “This plant
used to need 1. 3 million gallons
of fresh, potable water each day
during processing. However, be-
cause of the pollution prevention
practices Mark Dean and his staff
implement in the plant, and the
level of treatment Amanda’s group
achieves in wastewater, we current
reuse over 300,000 gallons of our
treated wastewater each day to re-
duce the potable water demand.”
The water reuse program in
Jasper includes a dedicated treat-
ment system that allows effluent
from the pretreatment dissolved
air flotation unit to be recycled for
use in backwashing and cleaning
the offal screens and in the feath-
er transport flumes. In addition, a
water recycling system has been
Internally fed mechanical rotary
screens
Pollution prevention continues once the wastewater stream
reaches the onsite pretreatment
system, where offal screening
is the first step in the process.
Internally fed mechanical rotary
screens in a series remove large
solids (e.g., feathers, viscera and
heads) prior to additional physical
and chemical treatment.
Durham said all new environ-
mental program employees begin
their training at the screening
step. “I tell the wastewater treat-
ment team that once solids are in
the wastewater stream the key is
to get it out as quickly as possible.
The pretreatment system after the
screens is designed to remove sol-
uble, dissolved BOD. If we don’t
control the solids up front, then
the rest of the system downstream
won’t work. That’s the most im-
portant thing new operators need
to learn,” she said. ■
Brian H. Kiepper, Ph.D., assistant
professor and extension poultry scientist,
Poultry Science Department, University
of Georgia, Athens, GA 30602-2772;
phone + 1.706.542.6776; email
bkiepper@uga.edu
GNP Company won a Clean Water Award in the full-treatment category. Read why at www.WATTAgNet.com/158215.html
