FY 15 Budget Presentation_Water & Resource Recovery CenterOP
City of Dubuque
Water & Resource Recovery Center
DUBUQUE
WATER & RESOURCE
RECOVERY
CENTER
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116.
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Water & Resource Recovery Center
Water
&
Resource
Recovery
Center
"Aqua est Vita" Water is Life
"Along With"
"Things Required for Life"
"Brought Back for Use"
"The Place Where it Happens"
The Water & Resource Recovery Center
Water & Resource Recovery Center
Department Manager
Administrative Assistant
Assistant Manager-
Eight Operators
3 Laboratory Technicians
0.16 Intern
Maintenance Foreman
2 Mechanics & 1 Electrician
Fourteen
•
Fy2013
40
\JY&RRC Operations — Average Day
Flow
B.O.D.
Avg. Day
Res. /Com. Ind. %Ind.
7.258 mgd
25,261 lbs.
T.S.S. 26,569 lbs.
6.608 mgd
19,191 lbs
24,866 lbs
0.65 mgd
6070 lbs
1703 lbs
9.8%
31.6%
6.8%
W &RRC Performance
FY 2013
Aria_
• Proces -d 7258 mgd. (annual 3.65 Billion)
Removed 96% of B.O.D. (Biological Oxygen
Demand)
Removed 95% of T.S.S. (Total Suspended
Solids)
Generated 6.2 Dry Tons of Bio- Solids Daily to
Land Application
Anaerobic Digestion-Performance
FY2013
19,702 pounds volatile solids into Digesters per Day
6,957 pounds volatile solids from Digesters per Day
Conversion of 12,745 pounds to Digester gas
Anaerobic Digestion-Performance
FY2013
64.7% reduction of volatile solids. 38% is required
to comply with Bio- Solids Land Application Rules
This is what is converted to Methane
Anaerobic Digestion-Performance
FY2013
72% Methane Gas Production Quality - typical 60 to
65% Methane
Current gas production of 200,000 cubic feet per day
at 72% Methane - Equivalent to 144,000 cubic feet of
Natural Gas or approx. 1 440 Therms, 42,192 kWh or
provide for 720 homes natural gas. (American Gas
Association Estimate)
Hydraulic Peak
Loading mgd
BOD Load
(lbs/day)
Solids Load
(lbs/day)
Design
Ca aci
36,900
29,400
Former
Ca aci
34.
24,400
24,600
Percent
Increase
Current
Conditions
33.6
25,261
26,569
W &RRC Capacity
City of Dubuque is poised for growth in
population and industry
Along with this increased capacity
Dubuque will have a highly energy
efficient operation
W &RRC O &M Budget
Employee
Expense
Supplies &
Services
Machinery &
Eqipment
fy2012/13 fy2013/14 fy2013/14 fy2014/15
Actual Adopted Amended Recomm'd
$ 1,548,007 $ 1,548,007 $ 1,640,985
$ 2,574,802 $ 2,113,413 $ 2,113,413 $ 2,230,713
$ 58,474
$ 46,300
$ 46,300 $ 65,240
Sub -total $ 3,941,946 $ 3,707,740 $ 3,707,740 $ 3,936,938
RRC 0 &M Budget
Increase for Polymer -New process
yields a new product which does not
match early estimates for demand
End of Warranties for equipment
Additional Lab costs for new permit and
Nutrient Reduction Plan Development
New Systems i.e. Boiler; Gas
Conditioning; Elevator; Radios for Lift
Station Monitoring
•
Proposed Rate Increase
Impact for typical family using 6,000
gallons per month would be an increase
of $1.60 per month
Rate Comparison
(based on usage of 800 cubic feet or 6000 gallons per month)
Age Of Plant City
Davenport
Des Moines
West Des Moines
Iowa City
Sioux City
Dubuque
Ames
Waterloo
Cedar Rapids
Council Bluffs
Average
25 +years
12 +years
35+ years
35+ years
Rates fy15 (as of 2/18/14)
$39.49 ( +13 %)
$38.79
$36.10
$36.08
$34.55
$33.51
$31.02
$22.40
$21.93
$17.21
$31.11
(+3.74%)
Rate Comparison
(based on usage of 800 cubic feet or 6000 gallons per month)
Dubuque's is 5th lowest of the ten largest cities in Iowa
Average with Dubuque is $31.11
Dubuque's rate is $2.40 higher than average
• W &RRC Activities and
Accomplishments
W &RRC Substantial Completion
September 2013
Ribbon Cutting Ceremony October 3, 2013
$68 million for projects (including Co -
Generation)
• W &RRC Activities and
Accomplishments
Lift Station Telemetry to SCADA
December 201.3
Piggybacks onto existing infrastructure
900 mhz radio system
City's fiber optics system
Knowledge of City IT Staff
W&RRC Activities and
Accomplishments
Lift Station Telemetry to SCADA
December 2013
• W &RRC Activities and
Accomplishments
Cogeneration (Microturbines) Substantial
Completion January 2014
Currently Producing 200 -280kw electricity
35 - 50% of W &RRC usage
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W &RRC Activities
Work to Complete
Interconnection agreement with Alliant
Programming changes required on W &RRC
electrical grid to allow full usage of
generated power to be accomplished under
Co -Gen Project
Addition of Capacitor Bank for maximum
electrical rate advantage -Under Co -Gen
Project
High Strength Wastes (HSW)
W &RRC has begun to except HSW
Increased gas production of 50 to 80 thousand
cubic feet (kcf) of gas per day
Goal for fy15 is $275,000 in revenue from
HSW and additional gas production of 60 to 80
kcf per day
et
Research for Additional Methane Use
Compressed Natural Gas Fueling Station
Using Methane from Digesters
600kw electricity will require 210 cfm
Digesters and gas cleanup equipment has
capacity of 350 cfm
With 50cfm we could produce up to 275
gallons gasoline equivalent of vehicle fuel.
Compressed Renewable Bio Gas
Glycol chiller
CU nLr41
.Panel
Hydrogen
Sulfide
IRl ernQV I
Flow does it NA" ork?
Gas Cornpressoonf
M.oiStLlre Removal
System
5i bxa ne/
VCIC:
R errlo Val
`Mein
BioCNG'.. Skid!
F3iogas is piped to the patent pending BioCl1 ' System from a Landfill or anaerabic digester
▪ F- Fydrogen Sulfide, Moisture_ Siitaxa1ns_. Yola tile Organic Compounds and Carton [Dioxide are
removed
▪ !Product gas is piped to a vvehiclle fueling system for use as fie -I in C ue hi cies
Compressed Renewable Bio Gas
W &RRC has all but one clean -up steps installed.
CO2 removal and fueling station only needed.
Incremental cost of approximately $500,000 for 200-
275 GGE per day (73,000 to 100,375 GGE per year)
Less than $0.50 per GGE plus Capital Costs
Nutrient Reduction Strategy
Goal is to reduce the Iowa contribution of Total
Nitrogen (TN) and Total Phosphorous (TP)
into the Mississippi River and the Gulf of
Mexico
Two year process Data Collection Starting in October 2013
Plan Development Submitted by October 2015
Nutrient Reduction Plan (NPR)
Dubuque NRP will address possible changes in
the operation of the W &RRC including the
addition of new processes.
We will also consider the possibility of nutrient
trading in a local watershed if economically
feasible.
a
Water & Resource Recovery Center
Water
&
Resource
Recovery
Center
"Aqua est Vita" Water is Life
"Along With"
"Things Required for Life"
"Brought Back for Use"
"The Place Where it Happens"
The Water & Resource Recovery Center
W &RRC - From Disposing of Waste to
Extracting Resources
To Bio- Solids for
injjc .t Beneficial Use
Potential Resources Burned
Administrative & Laboratory Personnel
Operations
Maintenance
City Council
Environmental Stewardship Commission
City Staff
The Citizens of Dubuque
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2013
FLU
VACCINES
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