ies webinar: innovative water technologies: on-site water recycling solutions for commercial...
TRANSCRIPT
Innovative Water Technologies:Onsite Water Recycling July 28, 2016
Presenters: Jeremy Handler, Strategic Advisor, Strategic Energy & Sustainability Programs, and Catherine Osborne, Engineering Specialist, Strategic Energy & Sustainability Programs, both with Ecova
Why Water? Defining Onsite Water Recycling Benefits of Onsite Water Recycling Onsite Water Recycling Solutions
– Graywater– Rainwater Harvesting– Cooling Tower
Challenges & Guidelines
Innovative Water TechnologiesOnsite Water Recycling
Why Water?
Why Water?
Cost per unit+46%
Consumption-6%
COST vs. CONSUMPTION
Consumption Down, Expense Way Up
Data Source: Ecova, Commercial Sites North America
Based on 4 person household using 400 gals/day
+41%Water Cost from 2010
Based on 4 person household using 400 gals/day
+41%Water Cost from 2010
Defining Onsite Water Recycling
Defining Onsite Water Recycling
WATER
Defining Onsite Water Recycling
USE #1 RECLAIMED WATER
MUNICIPAL SUPPLY
REUSED WATER
USE #2
RECYCLED WATER
WASTE WATER
•Precipitation collected from at-grade surfaces
Storm Water
•Groundwater extracted to maintain structural integrity
•Otherwise discharged to the sewer system
Foundational Drainage
Defining Onsite Water RecyclingTypes of Water
•Wastewater containing biological waste
•Discharge from toilets, dishwashers and kitchen sinks
Black Water
•Wastewater from bathtubs, showers, bathrooms sinks, washing machines and kitchen appliances
Graywater
•Precipitation collected from aboveground surfaces
Rainwater
Benefits of Onsite Water Recycling
Benefits of Onsite Water Recycling
Resource Savings Financial Savings Risk Mitigation
Wastewater Discharge Wastewater Treatment Decreases PollutionDecreases NeedDecrease
Onsite Water Recycling Solutions
Schematic
Water Recycling System
TO S
EWER
REUSE
MU
NIC
IPA
L S
UP
PLY
1. HVAC Operation2. Collection3. Sanitation4. Storage5. Overflow6. Control7. Pumping8. Reuse9. Monitoring
PUMPINGSTORAGE
OVERFLOW1
2
7 8
5
6 CONTROL
THREE WAY VALVE
TREATMENT3
MONITORING9INITIAL WATER SOURCE
COLLECTION
4
BACKFLOW PREVENTION
Graywater
GraywaterWater Sources
GraywaterSystem Types
more complex, more expensive
GraywaterPumped System
more complex, more expensive
GraywaterManufactured System
more complex, more expensive
GraywaterSand Filter-to-Drip System
more complex, more expensive
Graywater
Building: The W Hotel Construction: New System Type: Laundry
Graywater Capture Reuse: Laundry Results: Supports 1.5 million
gallons per year saving $56k
Case Study
GraywaterCondensate Capture System
Graywater
gal/cfm
Condensate Capture Potential
Rainwater Harvesting
IRRIGATION
TOILET FLUSHING
COOLING TOWER
MAKE-UP WATER
Rainwater HarvestingTypical Uses
Rainwater HarvestingPARKS &
RECREATION
LIBRARIES & UNIVERSITIES
ENTERTAINMENT
POLICE & FIRE
OFFICES
GROCERY
HOSPITALITY
RETAIL
Building Types
Rainwater Harvesting
Building: Klarman/Smith Hall –Cornell University
Construction: New + Retrofit System Type: Rooftop rainwater
for toilet flushing Storage: 6,000 gallon cistern under
the building Results: Supports 1,950 gallons
of toilet flushing per day (~1,500 flushes)
Case Study
Cooling Tower
Cooling TowerSolutions
Cooling TowerSolutions
Cooling Tower
DATA CENTERS
ENTERTAINMENT
HOSPITALITY
UNIVERSITIES
AIRPORTS
DISTRIBUTION CENTERS
OFFICE CAMPUSES
CONVENTION CENTERS
Building Types
Cooling Tower
Building: Renaissance Mumbai Convention Centre Hotel and Marriott Executive Apartments Construction: Retrofit
System Type: 3D TRASAR real-time feed and monitoring
Results: Saves 16 million gallons ($48k) annually; 600k kWh ($60k) annually; ROI of 4 mos
Case Study
Challenges & Guidelines
Challenges
Project Cost Water QualityHealth &
Well-being
Challenges
Project Cost Water QualityHealth &
Well-being
Challenges
Project Cost Water QualityHealth &
Well-being
Challenges
Project Cost Water QualityHealth &
Well-being
Guidelines & References
Guidelines & References
Guidelines & References
Guidelines & References
Recap
Why Water? Defining Onsite Water Recycling Benefits of Onsite Water Recycling Onsite Water Recycling Solutions
– Graywater– Rainwater Harvesting– Cooling Tower
Challenges & Guidelines
Upcoming Webinars
INSIDE ENERGY & SUSTAINABILITY
Q3 Energy Outlook – Thursday, August 18th 11A PDT
Waste Technologies – Thursday, September 29th 11A PDT
Q&A
