Upload
desirae-liston
View
213
Download
0
Tags:
Embed Size (px)
Citation preview
S
Real Time Savings: Transforming Real Time
Hydraulic Data into Actionable Information
Luis Montestruque, Ph.D.President
EmNet, LLC
Patrick Henthorn, P.E.Assistant City Engineer
City of South Bend
Agenda
The Problem
Defining Goals and Objectives
Real Time Monitoring System
From Data to Information
Real Time Decision Support System
Results
3
Case Study: City of South Bend, IN
4
City of South Bend, IN
Population: 107,000 WWTP: 77 MGD 500 miles of sewer lines Combined Sewer System
20 square miles 36 CSO discharge points
Separate Sewer System 20 square miles
LTCP Tunnel, separation, WWTP expansion
LTCP Cost: $450M East Race Environmental
Sensitive Area
South Bend Goals and Objectives
Eliminate dry weather overflows
Prevent basement backups
Better understand system hydraulic performance
Maximize flows to WWTP and explore RTC
Calibrate model
5
6
Data Originators Options
Area Velocity Flow Meters Different vendors/ different applications More detailed data (flow, level, velocity) More expensive
Level Transducers Standard (ultrasonics, sonar, pressure) Data: level (calculations needed) Inexpensive
TRADEOFF
CSS SCADA Points: 17RT-DSSPoints: 110
SCADA System: Rockwell – RSViewSCADA Monitored locations: 17 (mostly lift stations)Additional Monitoring: Based on Objectives
CSO outfalls: 36 sites Interceptor: 27 sites Trunk lines: 42 sites Retention basins: 5 sites Cost: $3M
Dense Monitoring System
8
Design to Fit
Objectives: Easy deployment Battery operated Data every 5 minutes Low maintenance
Development: University of Notre Dame Purdue University
Results: Mixed 900Mhz/Cellular Deployed mid winter 2008 Deployment time 1 month
Immediate Objectives
Focus on CSOs & Interceptor
First priority – organize data and learn how the system behaves during wet and dry weather Un-learn what is “normal”
Second priority – revise maintenance schedules Initial stage - Increase number of inspections Add calibration checks Focus on CSO service area cleaning Second stage – Reduce cleaning frequency
Revise staff duties9
10
Deviations from Model
Weir Elevation Water Level
Trunk line
Throttle line
Overflow line
11
Deviations from Model
This is normal!
Small blockage forms CSO is
vactored
12
Deviations from Model
Weir Elevation
Average Dry Weather Flow
Increased O&M Benefits Use of vactor trucks 50
additional days annually = $133K
Clean 2000 additional catchbasins annually = $40K
Increase number of sewer inspections at non-routine locations by 175% = $29K
All this with Same Staff Total Dynamic
Maintenance Value
= $202,000 13
“It’s like hiring more personnel, but without the cost.”
Gary Gilot, Director of Public Works,City of South Bend, IN
Real Time Data
14
110 Monitoring Sites30,000 Data Points Per Day
Real Time Decision Support Systems
15
Data
Information+ Organization+ Context+ Analysis
SCADA Integration
SCADA Integration
17
1818
Using GIS
Dry Weather Overflow Elimination
97% DWO reduction from 2008 to 2010 2008 = $797,500 fines 2009 = $275,000 in 2009 fines 2010 = $27,500
Operations Optimization
20
Optimization In South Bend, IN
Reduce CSO volume by balancing flows to WWTP
Increase inline storage opportunities
Increase storage ability in retention basins by up to 150%
Optimize CIP saving $120 Million
Annual Overflow VolumeExisting System (MG)
Annual Overflow Volume CSOnet System (MG)
Percentage Reduction (%)
918.2 702.8 23%
Summary
Advances in information processing lead to new ways of performing maintenance, operations, and design
Integration of real time data, model, and visualization tools provides new insight
Future systems will further enhance capabilities by providing forecasting of hydraulic conditions before they happen