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8/9/2019 Rain Bank - The Challenge to Alleviate Water Shortages
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RainBankDavid Osborne
General Manager International
Davey Water Products
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To alleviate water supply limitations inmajor metropolitan cities:
Without ground water
Where desalination is not an option
Provide a sustainable household
solution
Mitigate storm water inrush
The Challenge
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Australia has adopted rainwater harvestingas the easiest option, behind public
education and water restrictions
For example:
A 530 gallon tank connected to 1000sq feetof roof area, plumbed to toilets andlaundry can save 40% or 40,000 gallonsof water per year.
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Rainwater tanks have always been part ofthe rural landscape
11% of all Australians drink
rainwater 3% depend 100% on rainwater
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Basic system Rainwater into a tank
Pump to pressurize it
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Basic system Targeted at garden watering
Requires very large tank
Not global micro approach Not effective in homes
Estimated utilisation
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New metro tanks
Had too be smaller due to space No longer supply 100% of water
Needed to have mains water backup Consumers had little experience with
tanks or pumps
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Standard metro plumbing
What substitute watersources are available?
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How do you incorporate rainwater?
?
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Traditional Air - Gap
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Air - Gap
Pump is a critical part of the system Energy is wasted as all water is depressurized
Wont work if electricity is not available Wont allow full capacity of tank to be used
Can be noisy and create water spray
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How else could you incorporate rainwater
?
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RainBankhousehold water savings
A unique solution torainwater recovery and
usage.
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RainBank- World first direct interconnection device =
no air gap- Rainwater as priority with:
- Seamless mains backup- Does not re-pump all water saving energy
- Patented
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- Works when there is:- No Pump
- No Rain water
- No Power
- No mains water
RainBank
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RainBank
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Typical Installations
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Backflow? Technical Solutions Plumbing Industry
Commission: 5: Cold Water Plumbing
AS3500 permits rainwater tankconnection with suitable backflow valve
Low hazard = approved non-testabledevice.
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Legislative actions
Get advice from plumbing officials Draft new Australian Standards
similar to IAPMO
Have RainBank approved to thesestandards - NSF
Lobby to have incentives for adoption
Introduce to plumber inspectors
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Introduction actions
Form relationships with plumbingorganisations
Write training programs
Introduce to retailers
Begin to train the trainers apprentices
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Water savings
Typically 40% of a homes water 506,880,000 g / year
15,056,818,000 Us gallons cumulative Or an additional 1% of Melbourne's entire
water storage
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Finalist in GreenPlumbersWater efficient product of the
year
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Winner in Standards Australia
Design Awards
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Winner in Save Water!
New Product Awards
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Safety?
First flush diverters can reducepossible contaminants
RainBank for non-potable
applications Requires no treatment or extra
filtration
RainBank for potable applications
Requires treatment &/or extra filtration
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Commercial Installations
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Water savings
792,000 US gallons / year Providing close to 100% of our
water requirements
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Key Components Approved and stamped dual check
backflow device Installed with approvals visible
Pressure reducing valve
Set at 30 PSI
Level switch
To stop the pump if rainwater level is low
Low voltage for safety
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Key Components (cont.)
Flow switch
To start the pump when flow is detected
Pump check valve
To stop mains water flowing into therainwater tank
Rated at 145 PSI Control Circuit proven design
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Current options:
Not seamless
Not truly green
Maintenance requiredNot unique
Air gap required
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RainBank is:
SeamlessConvenient
Very low maintenancePatented
No air gap required
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RainBank is:Truly green
Less pump run time
No pump cycling
No re-pumping mains water
Auto mains back-up
Loss of Prime protected
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Support Material
New corporate image
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Support MaterialAd examples:
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Support Material
Public
Exhibitions
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