Real Time Savings: Using High Density Real Time Monitoring and Control to Optimize South Bend, INs...
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Real Time Savings: Using High Density Real Time Monitoring and Control to Optimize South Bend, IN’s Combined Collection System Timothy Ruggaber, M.S.Env.E., P.E. Director of Operations EmNet, LLC
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Transcript of Real Time Savings: Using High Density Real Time Monitoring and Control to Optimize South Bend, INs...
Real Time Savings:
Using High Density Real Time Monitoring and Control to Optimize
South Bend, IN’s Combined Collection System
Timothy Ruggaber, M.S.Env.E., P.E.Director of Operations
EmNet, LLC
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Case Study: City of South Bend, IN
Population: 107,000CSO discharge points: 36CSO area: 20 square milesTotal area: 40 square milesCSO volume: 1.0 billion gallons/year
Original LTCP:Tunnel, separation, WWTP expansionCost: $450M Goals
Be in compliance Be responsible to rate-payers Only spend what is needed to solve the problem
CSO Abatement Approaches
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Monitoring
Traditional
Limited availability of real data
Storm temporal & spatial variability
Static infrastructure Largest improvement
project Will our design achieve
the WQ objectives?
CSO Abatement Approaches
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South Bend Deep system
characterization Design based in dense
permanent monitoring Dynamic infrastructure that
can be adjusted to storm variability
Optimize available and future infrastructure Conveyance Storage
South Bend Goals and Objectives
Reduce CSOs Eliminate dry weather
overflows Prevent basement
backups Identify sources of I/I Calibrate Model
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Use permanent dense monitoring to understand system hydraulics
Determine hydraulically underutilized areas
Tailor solutions for specific problems
Objectives Goals
Operations and Control Basics
Eyes – Monitor, Characterize
Brain – Analyze, Evaluate, Understand
Hands – Implement
EyesCharacterize
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Traditional Eyes SCADA
High cost Limited # of sites Limited choices for sites
Inspections Intermittent Temporal or spatial
comparisons difficult Temporary Monitoring
Limited data, miss events Battery changes Download data or install
“hockey puck” antenna Modeling
Simplified system Idealized storm events Limited O&M benefit
CSOnet® LogiCover™
9Patent Pending
Extends SCADA
Real Time Data & Logger
Up to 3 year battery life
Composite & Hybrid models (H-20, HS-20, H-25, HS-25)
Can connect to level, flow, and water quality meters
Dense Monitoring System
CSS SCADA Points: 17CSOnet® Points: 110
SCADA System: Rockwell – RSViewSCADA Monitored locations: 17 (mostly lift stations)CSOnet® Monitoring: CSO outfalls: 36 sites Interceptor: 27 sites Trunk lines: 42 sites Retention basins: 5 sites Cost: $3M
“Before CSOnet®, it was like we had an artist’s rendering of our collection system. Now, it is like we have a high definition video feed.”Jack Dillon,Director of Environmental Services, South Bend
BrainsAnalyze, Understand,
Evaluate
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Data,Information,Knowledge
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SCADA Integration, Data Baselines, and Alarms
Real Time Visualize Data
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Dial showing flow rate
River stage
Weather info
Depth at CSO
Conditions in trunkline
Replay Storm event
Real Time Data Analysis
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Overflow
Surcharge
Anomaly Detection
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“[The RTM system] has shown me several problem sites that were previously misdiagnosed. I’ve been able to focus on these problems and I believe that CSOnet has been the saving grace that allowed us to identify problem areas and get to the root cause of many CSO overflows and other badly needed collection system maintenance issues.”
Richard RadcliffSouth Bend CSO Manager
Small blockage forms CSO throttle
is cleaned
Blockage is detected using RTM system
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Deviations from NormalPinpoint problems, schedule solution, reduce emergency maintenance – save energy!
Dry Weather Overflow Elimination
Eliminated 66% of dry weather overflows from 2008 to 2009 $797,500 in 2008 fines vs. $275,000 in 2009 fines –
$522,000 in fine elimination
Goal for 2010: Zero
Increased Staff Responsibilities
Fix problems instead of looking for them Stop just putting out fires Perform early preventative
maintenance: Vactor 50 additional days Increase number of sewer inspections at
non-routine locations by 175% Clean 2000 additional catchbasins
Annual Additional O&M Benefit –
$189,000
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“[This system] is like hiring more personnel, but without the cost.”
Gary Gilot, Director of Public Works,City of South Bend, IN
Before RTM system
Search for DWOs Resolve DWOs Misc. duties
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Collection System Inefficiencies
Is WWTP operating at full capacity before CSO
events?
Are conveyance assets at 100%
before CSO events?
NO
Consider RTC to improve
conveyance
NO
If storage is available, are
storage assets at 100% before CSO
events?
YES
NO Consider RTC to improve storage
after conveyance
Real Time Decision Support
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Present / Real Time
Past/Database
Future/ Hydraulic Model
CSOnet® Automatic Control Strategy
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HandsImplement
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Crawl, Walk, Run
Integrated RTC of CSO Lift Station Flooding at Interceptor location dropped from 5
times annually to once annually
Intelligent control of two retention basins Improve effectiveness of storage by 110%
Dynamically control key CSOs Have WWTP run at full capacity before overflow
occur
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Maximize Flow to WWTP
Throttle Line
Combined Sewer
Trunkline
Interceptor Line
OverflowLine
Weir
Cabinet or Traffic Signal
Gateway
INode
Sensor
Stilling Well
Manhole Cover Antenna
Weir
Sensor
Stilling Well
Larger ParallelThrottle Line
Actuated ValveCombined SewerTrunkline
Interceptor Line
Conduit
OverflowLine
CSOnet® Control Strategy
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Proof of Concept
Optimization Engine
Based in EPA SWMM (open source)
Model RTC strategies
Run offline to familiarize with control logic, tailor algorithms
Find knee of the curve
Implications of RTC In South Bend
Reduce CSO volume by balancing flows to WWTP
Increase potential of existing storage
Focus storage on peak reduction, maximize conveyance
Control discharges into collection system
Eliminate need for deep tunnel for storage
Reduce New Construction by $120 M
Annual Overflow Volume
Existing System (MG)
Annual Overflow Volume CSOnet System (MG)
Percentage Reduction (%)
918.2 702.8 23%
Summary Dense real time
monitoring and control
Maximizes the use of existing infrastructure
Characterize, Analyze, Implement, REPEAT
$120 M in avoided construction
$500,000 in avoided fines
$189,000 in additional O&M benefit
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Questions
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