WATT PoultryUSA - April 2018 - 50
50 ❙ WATTPoultryUSA
POULTRY WASTEWATER REUSE
and land application system
Biochemical oxygen demand
Total suspended solids
% Allowed used
1st and 4th quarters
2nd and 3rd quarters
Chemical oxygen demand
Land application system
total nitrogen permit
Source: Information was taken from the Clean Water Award application
submitted by the facility to the US Poultry and Egg Association.
Table 1: The wastewater treatment system removes
more than 99 percent of the chemical oxygen demand,
biochemical oxygen demand and total suspended solids.
and receives the SBRs' discharge, helping us target and
manage our effluent nitrate-nitrite loadings before the land
"We get tremendous performance out of our covered
anaerobic lagoon so we could send the process effluent after
dissolved air flotation treatment without chemistry," Roger
Smith, vice president for engineering services at American
Proteins Cumming Division, said.
In 2016, about 67 million cubic feet of biogas was
captured with about 75 percent of that volume usable for
blending with natural gas. However, Smith and Greene
said the goal is to maximize raw material recovery for
products so DAF with chemistry is used. Achieving an optimum biogas production serving as an alternative energy
source is a treatment priority, not a production priority.
Currently, the overall natural gas used is reduced by 10
percent with biogas.
Managing the operation
Leroy Woody, American Protein Cumming Division's
division environmental manager, leads the team charged
with applying its understanding of the system's complexities and flexibility for balancing and managing the daily
a goal of capturing any residual protein, oil and grease. The
condensate waters are then blended in advance of anaerobic
digestion, the first biological treatment step. Several advanced
treatment ponds centered on a pair of sequencing batch reactor basins (SBRs) follow.
"If we operated a conventional activated
sludge system with continuous flow into
anoxic and aeration basins, we could slip
stream our condensate flow to take advantage of its high organic carbon and low
organically-bound nitrogen characteristics
to achieve better denitrification," Jonathan
Greene, American Proteins Cumming
Division's complex manager, said.
As configured, the facility has a short stage
time in the SBRs during the fill cycle with low
dissolved oxygen levels. Yet, it does have a variety of other ponds that provide flexibility.
"One of the interesting features we have
Division Environmental Manager Leroy Woody discusses aspects
is the kidney pond, named for its shape,"
of the SCADA system used to balance and manage wastewater
Greene said. "It operates as a facultative pond treatment operations. | Courtesy of American Proteins
www.WATTAgNet.com ❙ April 2018