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Reclaim SystemsTony Vertin, CEO, Ver-tech Labs
May 15, 2013
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What’s the Future of Water?
31 countries are facing severe water stress
Over one billion people have no access to clean water
If nothing is done, by 2025 two-thirds of the world’s population will not have enough water for the basics of life
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Why do we need a reclaim system?
1. Water rates are becoming more expensive.2. Sewer rates are becoming more expensive.3. Impact fees are increasing.4. Water and Sewer rates are rising at a rate of
5% to 30% a year5. Effluent standards are becoming stricter6. Good for the environment7. Many municipalities require reclaim systems for
new and existing washes
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Conclusion
Water Reclamation Systems are coming to
your local transit authority.
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What is a Transit WashWater Reclaim System?
A system that takes used water from a transit wash and recycles the water for use back into the wash.
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What comprises a transit wash reclaim system?
• Wash Equipment
• Water Reclaim Equipment
• Maintenance
• Chemistry
As a system, all of these components need to work together for the system to be successful.
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Wash Equipment
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Wash Equipment Parameters
• Friction or touchless washing?
• Does the system use a drying agent or wax?
• Does it utilize soft water?
• How much water is used to wash each vehicle?
• Is there an underbody flush?
• Newer large vehicle wash systems are coming
with more-pressure, nozzles, and water.
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Water Reclaim Equipment
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Typical components of a reclaim system
• Sedimentation or settling tanks
• Mechanical filtration(filters or cyclonic separation)
• Oxygenation of the water (ozone or air sparging)
• Biological (bacteria or enzymes)
• Controls and sensors
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Settling Tanks
Water enters a series of tanks that will allow dirt and large particulate to settle
A poorly designed tanking system can potentially mean disaster for the wash operator
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Settling TanksAbove Ground in Retrofit
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Filtration Systems
160 GPM
220 GPM
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Ozone Generation Unit
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Control Systems
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Where can reclaim water be used?
• Undercarriage
• Side Panels
• High Pressure Rinse
• Flooder Arches
• Mitters
• Lawn / Shrub Watering
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Design Criteria
• Is there sufficient capacity in the system to handle
the amount of water produced by the wash?
• Is there redundancy in the equipment?
• Where is the water going to be used?
• What percentage water is reclaim?
• Does it remove the contaminants from the water
that need to be removed?
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Reclaim Equipment Design
6 P’sProper Prior Planning Prevents Poor Performance
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Maintenance
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Maintenance
• Has the manufacturer provided you with a
schedule of system maintenance?
• Are you doing it?
• Change filters or clean strainers
• Pump the tanks
• Not doing it costs more in the long run
• Outsource the maintenance?
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Reclaim Compatible Chemistry
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What does reclaim compatible mean?
Does the chemistry used to wash and dry the transit vehicle help or hinder the performance of the reclaim system?
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Reclaim Compatible Chemistry
• The most overlooked and misunderstood part of the reclaim system.
• Tremendous impact on maintenance frequency of reclaim equipment, appearance of buses and maintenance of buses
• Many chemical companies, wash equipment and reclaim equipment do not understand what reclaim compatible means
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Problems associated with non-reclaim compatible detergents
• Foul odors like the "rotten egg" smell technically known as hydrogen sulfide
• Increased frequency of reclaim system pump outs • Dirty cloth that scratches buses and leaves them
dirty• Disgruntled employees • Excessive use of chlorine, peroxide, ozone,
enzymes, etc., in an unsuccessful and expensive attempt at control of odors.
• Corrosion• Dirty Buses
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Chemistry of Cleaning
plus and lifts them into the wash solution
Drying agents deliberately use a positively charged surfactant that is preblended with an oil.
As these hit the vehicle, the positive charge (+) is attracted to and bonds with the negative (-) caused by electron particles on the vehicle surface displacing water which rides on top
OIL
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Adverse Reaction
PLUS = combining and forming a water insoluble material
During the wash process and in the reclaim, both of these oily tails can pick up dirt particles:
like a wet body picks up sand when rolling on a beach.
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The Result
A black, sticky, oily, insoluble snot that clogs filters and reclaim equipment, leaves the cloth dirty and abrasive, buses dirty, and employees gagging.
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Sulfonated Detergents
Most common detergents
Adding sulfur to reclaim system
Can create hydrogen sulfide, “rotten egg” smell.
In extreme cases turns copper pipe black
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Free Rinsing Chemistry
• Free rinsing means less water usage• Reclaim compatible products rinse better• Removes the dirt from the cloth• Saves money on water and sizing reclaim
system
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Use the right amount of soap
• More is not better• Accurate dispensing• Less detergent for reclaim system to
contend with
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Magnesium Chloride or Road Salts
• Does your detergent react with and remove magnesium chloride?
• 1700-4000 ppm of road salts require that the tank be diluted with fresh water or pumped out.
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Put yourself in best position to succeed
Treat water reclamation as a system, not a piece
of equipment.