Poultry International - June 2018 - 37
PoultryInternational ❙ 37
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
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
"One of the interesting features we have is the kidney
pond, named for its shape," Greene said. "It operates as a
facultative pond and receives the SBRs' discharge, helping
us target and manage our effluent nitrate-nitrite loadings
before the land application system."
"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
June 2018 ❙ www.WATTAgNet.com
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.
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.