178. Comparison of conventional aerobic and high-rate anaerobic digester systems for brewery wastewater treatment

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Manaf Farhan (1); (1) EMG International, LLC., Media, PA, U.S.A.

Sustainability
Poster

The craft brewing industry has enjoyed sustained robust growth over

the past decade. With the growth in production there has been a

corresponding increase in resulting wastewater and the associated

financial and regulatory burdens. Wastewater treatment for this industry

is now a necessary part of brewery operations for which brewers are

seeking more reliable and cost-effective solutions. The most common

biological wastewater treatment system is based on the conventional

activated sludge (CAS) process. Although CAS processes are reliable,

they generate significant waste sludge and carry high operating and

maintenance (O&M) costs. The emerging application of high-rate

anaerobic digestion (AD) technology for treating brewery wastewater

offers lower sludge generation and related O&M costs, renewable

energy generation, and reduced carbon footprint. This paper evaluates

CAS and high-rate AD technologies for brewery wastewater treatment by

providing process descriptions and comparing efficiency, reliability,

and O&M costs. A detailed description of the biological process and

typical system components for CAS and AD technology is provided. This

paper also provides a comparison of process reliability, removal

efficiency, recovery from cleaning chemicals and overloading conditions.

In addition, this paper outlines operational costs, including sludge

disposal, chemical usage, supplemental nutrient requirements, and

electricity consumption for CAS and AD systems.

Manaf H. Farhan is the president and CEO of EMG International,

based in Media, PA. He holds a B.S. degree in civil engineering from the

University of Notre Dame, a master’s degree in environmental

engineering from Columbia University, and master’s and Ph.D. degrees in

systems engineering from the University of Pennsylvania. He is a

licensed professional engineer. His doctoral research focused on design

and optimization of various anaerobic digester processes to maximize

process efficiency and biogas production. He has authored several

peer-reviewed articles on anaerobic digestion and has served as an

adjunct professor in the Department of Electrical and Systems

Engineering at the University of Pennsylvania. He has over 20 years of

experience providing a wide range of environmental engineering design

and consulting services to private industry and governmental clients.

His professional experience includes design and construction of digester

systems for wastewater treatment and biogas and electricity generation

for food and beverage facilities and for dairy farms; technical

evaluation, process modifications, and operational support for various

full-scale anaerobic digester installations; development and testing of

bench-scale and pilot-scale wastewater treatment systems; pollution

prevention and wastewater minimization audits; and biogas collection,

clean-up, and utilization.

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