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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.,

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Presentation on theme: "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.,"— Presentation transcript:

1 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

2 Case Study: City of South Bend, IN
Population: 107,000 CSO discharge points: 36 CSO area: 20 square miles Total area: 40 square miles CSO volume: 1.0 billion gallons/year Original LTCP: Tunnel, separation, WWTP expansion Cost: $450M Goals Be in compliance Be responsible to rate-payers Only spend what is needed to solve the problem

3 CSO Abatement Approaches
Limited availability of real data Storm temporal & spatial variability Static infrastructure Largest improvement project Will our design achieve the WQ objectives? Traditional Monitoring Modeling Design Construction

4 CSO Abatement Approaches
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 Monitoring Modeling Design Construction

5 South Bend Goals and Objectives
Use permanent dense monitoring to understand system hydraulics Determine hydraulically underutilized areas Tailor solutions for specific problems Reduce CSOs Eliminate dry weather overflows Prevent basement backups Identify sources of I/I Calibrate Model 5

6 Operations and Control Basics
Eyes – Monitor, Characterize Brain – Analyze, Evaluate, Understand Hands – Implement There are three basic elements to RTC

7 Eyes Characterize

8 Traditional Eyes SCADA Inspections Temporary Monitoring Modeling
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 Requires all this equipment for only one monitoring point.

9 CSOnet® LogiCover™ 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 Explain the LogiCover Compare and contrast versus SCADA based monitoring “This is our equivalent of a SCADA box…” Deployment takes 13 minutes Patent Pending

10 Dense Monitoring System
SCADA System: Rockwell – RSView SCADA 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 Mention the quote from jack CSS SCADA Points: 17 CSOnet® Points: 110

11 Brains Data, Information, Knowledge Analyze, Understand, Evaluate

12 Data Baselines, and Alarms
SCADA Integration, Data Baselines, and Alarms Now I’d like to talk about South Bend. 12 12

13 Real Time Visualize Data
Dial showing flow rate Weather info Conditions in trunkline Enter CSOnet data analysis as a way to better understand data that comes in and “see the overall picture” at a glance River stage Depth at CSO Replay Storm event

14 Real Time Data Analysis
Surcharge Overflow 14

15 Anomaly Detection “[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 Radcliff South Bend CSO Manager Example of how O&M is able to react to data

16 Deviations from Normal
Small blockage forms CSO throttle is cleaned Blockage is detected using RTM system Pinpoint problems, schedule solution, reduce emergency maintenance – save energy! Last example looking at CSO 44, I like this example because it’s a bit more extreme and really highlights the benefit of targeted preventative maintenance. This is a very low flow site where typical flow depth should be about a tenth of a foot. After a storm event, a bunch of leaves and sticks had clogged the throttle line and the depth rose to 0.3 ft. This was previously a site that a crew would do a quick visual inspection of by popping off the manhole cover and looking in. By visual inspection, everything would’ve looked fine: the depth is low, far from overflowing, in the channel, nothing to worry about. But because we know what “normal” at this site is with greater definition, we could determine that there was a blockage that would later cause problems downstream if we didn’t catch it and solve it now. So what does this mean? They’re able to schedule this as preventative maintenance to be done sometime over the next couple of weeks, instead of it becoming an emergency in which we may have to pay overtime and get vactor trucks there immediately, possibly causing problems at other projects. So we’re able to pinpoint problems, schedule solutions, and reduce emergency management, thereby reducing energy. 16

17 Dry Weather Overflow Elimination
Eliminated 66% of dry weather overflows from 2008 to $797,500 in 2008 fines vs. $275,000 in 2009 fines – $522,000 in fine elimination Goal for 2010: Zero CSOnet paid itself in DWO elimination

18 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 Before RTM system Search for DWOs Resolve DWOs Misc. duties “[This system] is like hiring more personnel, but without the cost.” Gary Gilot, Director of Public Works, City of South Bend, IN 18

19 Collection System Inefficiencies
Is WWTP operating at full capacity before CSO events? NO Are conveyance assets at 100% before CSO events? Consider RTC to improve conveyance NO Reasoning behind the use of RTC YES If storage is available, are storage assets at 100% before CSO events? Consider RTC to improve storage after conveyance NO

20 Real Time Decision Support
Real Time Decision Support System Past/ Database Present / Real Time Future/ Hydraulic Model

21 CSOnet® Automatic Control Strategy
Eureka moment, SoBend discovers that pipes are not full while overflowing

22 Hands Implement

23 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

24 Maximize Flow to WWTP Cabinet or Traffic Signal Gateway INode Sensor
Stilling Well Manhole Cover Antenna Weir Larger Parallel Throttle Line Actuated Valve Combined Sewer Trunkline Interceptor Line Conduit Overflow Line Throttle Line Combined Sewer Trunkline Interceptor Line Overflow Line Weir

25 CSOnet® Control Strategy

26 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 This is our optimization engine. In other words, EmNet SWMM is the program that generates the optimal control strategy. This program can: Be integrated with the Profiler for real time operation (optimization is generated in real time as data comes in) Output files can be sent out to SCADA for RTC (using exactly the same system that Brent uses to integrate the CSOnet database with SCADA) By trimming the model to a manageable size (which also depends on the computer size) forecasts can also be generated. Tim, the way that this would operate is the following: The EmNet SWMM can be compiled into an executable (which is what Kyle is doing for Indy) The profiler can then be given the task to gather the monitoring data write it into an xml file, call the EmNet SWMM executable, take the output data and write it into the database. The kepware software can then read the database and show it like a PLC, the master PLC can then decide to send the data to the actuators

27 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% enhance

28 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 Summary Add slide on contact info

29 Tim Ruggaber, M.S.Env.Eng., P.E.
Thank you Tim Ruggaber, M.S.Env.Eng., P.E. Add slide on contact info

30 Questions S 30

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