Water Purification Comparison Ultrafiltration Reverse Osmosis UV Disinfection

Water Purification Comparison

UltrafiltrationReverse Osmosis UV Disinfection

www.sunshineworks.com

http://www.sunshineworks.com/

Where does your water come from?

• Municipal water supply• Well• Lake• Bore hole• Cistern



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



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.



Filter Membrane



Size Matters



What Filtration Systems Remove



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



Ultrafiltration



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.



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



Reverse Osmosis For Salt Water



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 Kills DNA



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.



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



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



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

[email protected] Skype ID roncastle



mailto:[email protected]


Documents

Water Purification Comparison Ultrafiltration Reverse Osmosis UV Disinfection