Post on 30-Dec-2015
description
Water Purification Comparison
UltrafiltrationReverse Osmosis UV Disinfection
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Where does your water come from?
• Municipal water supply• Well• Lake• Bore hole• Cistern
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What is in your water?• Bacteria- e. coli, other coliforms• Viruses• Parasites – Giardia, Cryptosporidium• Pesticides• Fecal matter• Algae• Medications dissolved in drinking water • Dissolved solids – salts, minerals, heavy metals• Suspended solids – dirt, silt
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How Filtration Systems Work
• Ultrafiltration sieves out contaminants by molecular size and weight.
• Reverse Osmosis sieves out contaminants AND removes dissolved solids (salts, minerals, metals and other ions).
• Both Reverse Osmosis and Ultrafiltration systems create a barrier to remove contaminants.
• Pore size is extremely small on reverse osmosis systems and a bit larger on ultrafiltration systems.
• The pore size affects the amount of pressure, and therefore energy, required to push the water through the membrane.
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Ultrafiltration In Use
• Physical barrier to contaminants• Removes bacteria, viruses,
parasites, pesticides, medications, algae, dirt, silt and other suspended solids
• Low energy requirement• Good for lakes, streams, wells• Not for seawater or brackish water
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Definition of Reverse Osmosis
• High pressure feed water is forced against a dense, membrane surface.
• Water molecules diffuse through the membrane leaving the concentrated salts, other ions and contaminants
behind.
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Reverse Osmosis in Use
• Removes dissolved salts, minerals, metals and sugars • Removes algae, bacteria, viruses, parasites, pesticides,
medications, dirt, silt and other suspended solids. • Best method for producing very pure water.• Only viable method for large volume desalination of brackish
water or seawater.• Energy intensive• Requires prefiltration
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Ultra Violet Light system In Use
• Feed water flows past an ultra violet light bulb. • The UV rays destroy the DNA in organisms. • Effectiveness is determined by water clarity, flow rate and
UV ray output.www.sunshineworks.com
Ultra Violet Light Pros and Cons• Effectiveness-UV light destroys DNA in bacteria and viruses,
effectively killing the organism. • The light source must be sufficiently bright and the feed water must
have the proper flow rate to be effective. Difficult to determine effectiveness without lab testing.
• Turbidity-Dissolved solids that turn water dark will also block UV light, making it much less effective.• The feed water must be absolutely clear to effectively kill all the
organisms.
• Limitations UV only kills microorganisms. • UV cannot remove salts, minerals, heavy metals, pesticides and other
inorganic compounds from water.• Best as a final stage after ultrafiltration or reverse osmosis.
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Ultrafiltration or Ultra Violet• Designed for PRETREATED WATER• UV is NOT A BARRIER to
contaminating organisms. • Effectiveness depends on water
CLARITY, flow rate and bulb position• UV has NO SIMPLE FIELD TEST• Requires POWER to illuminate• Has NO TESTING CLAIMS• Portable units for LOW CAPACITY
treatment only• Requires ABSOLUTELY CLEAR water
source• Best as final stage
• Designed for NON POTABLE WATER• UF provides a PHYSICAL BARRIER to
organisms• System REMOVES 99.9999% of
bacteria and 99.999% of viruses• A SIMPLE integrity test validates
performance• A LOW ENERGY requirement• Has PASSED EVP/EVT test protocol• For HIGH CAPACITY filtration• Very LOW WASTE stream• Very SIMPLE to setup and maintain• Produces CRYSTAL CLEAR WATER • Drinking water that TASTES GOOD
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Ultrafiltration or Reverse Osmosis• Designed for NON POTABLE WATER• UF provides a PHYSICAL BARRIER to
organisms• System REMOVES 99.9999% of
bacteria and 99.999% of viruses• A SIMPLE integrity test validates
performance• A LOW ENERGY requirement• Has PASSED EVP/EVT test protocol• For HIGH CAPACITY filtration• Very LOW WASTE stream• Very SIMPLE to setup and maintain• Produces CRYSTAL CLEAR WATER • Drinking water that TASTES GOOD
• Designed for DESALINATION of brackish water or seawater
• Provides a PHYSICAL BARRIER to contaminating organisms
• Remove 96-98% of DISSOLVED SALTS, MINERALS and METALS
• Concentrate from system is WASTE stream
• A SIMPLE TDS test to validate• RO has HIGH ENERGY requirement• Best for labs, hospitals or HIGH
PURITY applications
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Questions?
Ron CastleOwner www.sunshineworks.com 111 First Avenue NW, Suite 2Winchester, Tennessee 37398-1643 USA
+1.931.962.8665 Phone+1.888.878.6014 FAX Toll Free+1.931.607.1392 Mobile and SMS
roncastle@sunshineworks.com Skype ID roncastle
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