highly distributed real-time control - cshema conference presentation
TRANSCRIPT
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Advanced Rainwater Harvesting and Stormwater
Highly Distributed Real-time Environmental
Monitoring and Control
Dr. William Hunt, North Carolina State University Kathy DeBusk, North Carolina State University
Marcus Quigley, P.E., D.WRE, Geosyntec
Presented - CSHEMA 2013 – Orlando, FL
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Collaborators and Partners
ReNUWIt
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The Big Picture - Distributed Real Time Monitoring and Control
Can passive approaches achieve optimal solutions given the realities of the built environment? What roles can and should information
technology play in addressing specific urban water engineering problems? What can be done now with dynamic
intelligent controls? What is the state of the art?
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Initial Research Problem
Find the least expensive most flexible means for monitoring and controlling the physical environment and integrating internet based datastreams.
UNH CICEET Grant
Patent # 60/850,600 and 11/869,927
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Highly Distributed Real-Time Monitoring and Control (DTRC)
“Ecosystems” of smart environmental infrastructure Platforms that interact and scale Disparate data sources can be combined
for visualization, analysis, and system control – Access field and web-based data – Interface with other systems – Complex algorithms – Specified data can be made available to the
public – Data access and user experience is
user/group specific
OptiRTC featured in
HOW THE “INTERNET OF THINGS” IS TURNING CITIES INTO LIVING ORGANISMS
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Internet Based Weather Forecast or other internet
data sources (Web service API)
User Interface Web Services and User Dashboards
OptiRTC Data Aggregator and Decision Space Data Logging and Telemetry
Solutions
Field Monitoring and Control (Sensors, Gauges, and Actuators)
Alerts Email Tweet SMS
Voice Autodial
Azure Tables/Blobs
DRTC Platform Overview
Rapid Deployment Field “Kits” With Wireless Sensors
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Adaptive Surface Water Management Using DRTC
Advanced rainwater harvesting Predictive retention and detention systems
using precipitation forecasts Controlled under drain bioretention Active porous pavement systems Active blue and green roofs
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Technology Application: Advanced Rainwater Harvesting System
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Advanced Rainwater Harvesting System Concept
Goal: Storage for both effective wet weather control and on-site use
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System Description Cistern installed to store runoff and make available on-
site Web-based precipitation forecasts are used to
automatically control releases to combined sewers or downstream BMPs (e.g., infiltration/bioretention)
Case Study: Advanced Rainwater Harvesting System
North Carolina
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NC State Pilot System Behavior Week of 9/20/2011
Forecast Datastream
70% Threshold
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NC State Pilot System Behavior Week of 9/20/2011
QPF and POP Forecast Datastream (Threshold of 70%)
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NC State Pilot – Dashboard (1-min refresh) System Behavior Week of 4/5/2012 11:52 AM
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NC State Pilot – Dashboard (1-min refresh) System Behavior Week of 4/5/2012 2:06 PM
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NC State Pilot – Dashboard (1-min refresh) System Behavior Week of 4/6/2012 12:14 AM
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NC State Pilot – Dashboard (1-min refresh) System Behavior Week of 4/6/2012 12:14 AM
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NC State Pilot – Dashboard (1-min refresh) System Behavior Week of 4/6/2012 8:38 AM
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NC State Pilot – Dashboard (1-min refresh) System Behavior Week of 4/6/2012 3:34 PM
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7/11/13 12:00 pm 7/12/13 12:00 pm
7/13/13 12:00 pm
7/11/13 12:00 pm
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NCState System This Morning
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88,630 L Released
36,560 L Used by Tryon Palace
86% Volume Reduction 93% Peak Flow Reduction
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How Much of a Difference Did it Make?
Observed (With
DRTC)
Modeled (Without DRTC)
Overall Wet Weather Volume Reduction 86% 21%
Mean Peak Flow Reduction 93% 11%
Overflow Frequency 18% 58% Dry Rain Tank Frequency 0% 0%
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NC State Site - Hurricane Sandy
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NC State Site - Hurricane Sandy
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Technology Application: Advanced Rainwater Harvesting Systems
Other Installations
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Twin Oaks Library - Austin
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Twin Oaks Library: Remote Reality
Interface
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Controlled Release to Bioretention
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Twin Oaks Library: User Experience
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Pilot Site: Washington, DC Engine House #3
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Engine House #25: Design
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“Harvesting Garden” Rendering
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Chattanooga, TN Main Terrain Park Harvesting
Retrofit
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Chattanooga, TN Main Terrain Park Harvesting Retrofit
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Technology Application: Smart Detention/Retention/Flood Control
Retrofits
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Outlet Control Structure Retrofit for Water Quality Enhancement
Balance Flood Control and Water Quality
Dray Pond Retrofit
Case Study: TX, Pond/Flood Control Retrofit
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Depth Time Series and Average Hydraulic Residence Time for Passive Outlet
Technology Application: Modeled Wetland Pond/water Feature Retrofits
North Carolina Design ( collaboration with Bill Hunt)
Depth Time Series and Average Hydraulic Residence Time for Actively Controlled Outlet
Average Hydraulic Residence Time (hrs)
13 days
Average Hydraulic Residence Time (hrs)
24 days
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Brooklyn Botanical Garden – Pond Control for CSO Mitigation
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Technology Application: Controlled Underdrain Bioretention
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Controlled underdrain design
Maximize Infiltration, minimize bypass, and achieve water quality targets
Case Study: Controlled Bioretention Underdrain
Bioretention site rendering
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Technology Application: Active Porous Pavement
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Actively Controlled Porous Pavement City of Omaha, NE
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Control Plate with Actuated Slide Gate (Open)
Actuator
Slid
e G
ate
Control Box
Control plate height is variable and serves as overflow when closed
Trash Screen
Pressure Transducer
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Control Plate with Actuated Slide Gate (Closed)
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Technology Application: Active Green Roofs
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Case Study: Active Green Roof, Pennsylvania
Active Irrigation Valve
Green Roof Project Site
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Dashboard SAP Green Roof – 7/16/13 2:43 pm
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Dashboard SAP Green Roof – 7/11/13
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Dashboard SAP Green Roof – 7/12/13
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Blue Roofs
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Potential for Active Blue Roof Systems Example NYC Blue Roof Pilots (Passive)
Application to blue roof designs.
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Closing Thoughts – Policy and Practice
Merging of information technology and infrastructure will increasingly be important if not critical.
Low cost, reliable, and highly functional sensors and sensor platforms will change everything we know about how we currently regulate, enforce, and understand environmental systems.
Be creative, explore the possibilities, the future is blindingly interesting.