GBMSD has dedicated itself to the collection, treatment, and
reclamation of about 38 million gallons of wastewater each
day. To continue to provide safe, reliable service that you expect
daily, GBMSD needs to replace its solids handling system.
The three main reasons to replace the solids handling system
Over the next five years, GBMSD will be designing and
constructing a new Resource Recovery and Electrical
Energy generation system known as the R2E2
Project. The system will provide safe, reliable service to
the Greater Green Bay area for years to come.
Wastewater is 99% water and 1% solids.
Wastewater solids are organic and inorganic materials found
in human waste, household waste, and industrial waste (e.g. of
sand, cinders, coffee grounds, seeds, fats, oils, greases, soaps,
paper fibers, and animal or vegetable life). GBMSD's Industrial Pretreatment
Program monitors and regulates the wastewater that is
sent from significant industrial users.
We are stepping away from the
traditional view of just disposing waste to viewing what is sent to
us as a resource to recover and reuse.
This project involves building two
anaerobic digesters, which break down biodegradable material in the
absence of oxygen, and reduce the volume of material to be
processed. In addition, the digesters will produce a methane gas,
which will be captured and processed into a biofuel and used
to produce electricity.
GBMSD will recover the heat from a new
incinerator, which will replace its two existing 35-year-old
incinerators. Through thermal processing, the heat from the system
will be recovered and used for building heat or
electricity. The new equipment will be more efficient, effective,
and meet the new stricter environmental air
Yes, digesters have been used in the
wastewater industry for over 80 years. Digesters are used
today at many treatment plants in Wisconsin including
Sheboygan, Appleton, Stevens Point, Madison, and
Milwaukee. Incineration is used at many medium to large size
wastewater treatment plants across the U.S. including
Minneapolis, MN; Cincinnati, OH; and Cedar Rapids,
IA. GBMSD selected this technology because of
the lack of available nearby land to landspread, increase risk of
contaminating groundwater from landspreading, increase in
greenhouse gas emissions from daily truck traffic,
and decrease in landfill disposal by 95%. GBMSD is an
operation that cannot shut down. It needs a consistent,
cost-effective, and reliable method of disposal.
The R2E2 Project is expected to
cut GBMSD's annual energy costs in half during the first year.
That's an estimated savings of more than $2.2 million. And, GBMSD,
producing much of its own energy, will be able to minimize its
expenses as energy costs rise in future years.
Plus, there are additional benefits of
the R2E2 Project:
The R2E2 Project will cost
approximately $147 million. It is a big investment, but one that
was deemed to be the most cost effective over the long run
by GBMSD engineers and consultants, as well as the local
municipalities and industries involved in the planning effort.
GBMSD brought together three
stakeholder advisory committees and a municipal/industrial customer
working group to help examine future solids handling
possibilities. Located on the right sidebar is more
information on the advisory committee results and working group
The project will be paid for through
GBMSD's municipal wholesale rate charge; that's the rate it charges
its direct customers. It is important to note that, because GBMSD
wholesales its services directly to 17 municipalities and one
industry, it does not bill residents and businesses directly.
GBMSD anticipates about a 9% increase
on its wholesale rate each year through 2016. Each
municipality sets its own wastewater treatment rate, so the impact
of these increases will vary from municipality to municipality.
Generally, GBMSD's current charges make up less than half of the
average household's sewerage charge, which is part of your
combined water and sewer bill.
Stakeholder Committee Meeting 5-14-13
Customer Working Group
Basis of Design Report Vol 1
Basis of Design Report Vol 2
January 31 Public Hearing Responses
Water Conservation Tip Sheet
R2E2 Facility Plan
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