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Real Time Savings: Using High Density Real Time Monitoring and Control to Optimize South Bend, INs 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, INs 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, INs Combined Collection System Timothy Ruggaber, M.S.Env.E., P.E. Director of Operations EmNet, LLC

2 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 3 Monitoring Traditional Limited availability of real data Storm temporal & spatial variability Static infrastructure Largest improvement project Will our design achieve the WQ objectives?

4 CSO Abatement Approaches 4 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

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

6 Operations and Control Basics Eyes – Monitor, Characterize Brain – Analyze, Evaluate, Understand Hands – Implement

7 Eyes Characterize 7

8 8 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

9 CSOnet ® LogiCover 9 Patent 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

10 Dense Monitoring System CSS SCADA Points: 17 CSOnet ® Points: 110 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 artists rendering of our collection system. Now, it is like we have a high definition video feed. Jack Dillon, Director of Environmental Services, South Bend

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

12 12 SCADA Integration, Data Baselines, and Alarms

13 Real Time Visualize Data 13 Dial showing flow rate River stage Weather info Depth at CSO Conditions in trunkline Replay Storm event

14 Real Time Data Analysis 14 Overflow Surcharge

15 Anomaly Detection 15 [The RTM system] has shown me several problem sites that were previously misdiagnosed. Ive 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

16 Small blockage forms CSO throttle is cleaned Blockage is detected using RTM system 16 Deviations from Normal Pinpoint problems, schedule solution, reduce emergency maintenance – save energy!

17 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

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 18 [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

19 19 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

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

21 CSOnet ® Automatic Control Strategy 21

22 Hands Implement 22

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 23

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

25 CSOnet ® Control Strategy 25

26 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

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 (%) 918.2702.8 23%

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 28

29 29 Thank you Tim Ruggaber, M.S.Env.Eng., P.E. 574.855.1012

30 Questions 30

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