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Archives for August 31, 2011

Puralytic: Solar Bag Technology for Water Purification

Posted on August 31, 2011 by Kym Leave a Comment

Water Purification Using Sun Power

Is it possible for the sun to provide the only source of power for a complete water purification system in a portable bag? Until now we would not give the idea much thought. But why not? We make “sun tea” where you put tea bags in a container of water and place the container outside in the sun to naturally brew the tea. So why not utilize the power of the sun to filter water?

Puralytics, a privately funded technology company located in Beaverton, Oregon is pioneering a new photochemical technology for water purification. They are building solutions to improve filtration for the global water challenges by combining the latest technological innovations with advanced engineering. The invention of the Solar Bag uses an effective and simple process for water purification.

The Puralytic Solar Bag has a backpack with handles that makes it easy to transport water to and from an available water source. Once the bag is filled with any water through the inlet debris filter, the bag is placed in the direct sunlight. It can either lie flat or hung from a tree or post. Once purified, the Solar Bag can be dispensed by a valve into a canteen or pot as required. By harnessing the power of the sun to purify water, the Puralytics Solar Bag will deliver clean drinking water that meets the World Health Organization (WHO) standards in remote areas.

The Solar Bag incorporates a 5 photochemical process that works synergistically to break down or remove harmful contaminants from the water:

Photocatalytic Oxidation: Previously unobtainable, selected wavelengths of UV light generate unprecedented levels of hydroxyl radicals without any chemical additives.

Photocatalytic Reduction: Reduces toxic species such as mercury, silver , arsenic, and chromium to more readily adsorbed materials.

Photolysis: Direct disassociation of contaminants by high intensity UV light, including atrazine, amoxicillin, DEET, and all estrogenic chemicals.

Photoadsorption: The catalyst strongly adsorbs heavy metals including mercury, lead, selenium, and arsenic, permanganate, and other compounds.

Photo Disinfection: Multiple wavelengths and high intensity UV disinfect pathogens more effectively than standard UV germicidal.

In remote areas, it is difficult to build a water well or some type of stationary water filtration system to provide clean drinking water to those who are not fortunate enough to have access to it. If there is not a way to accommodate these areas by constructing a water filtration system, then the Solar Bag is ideal for fulfilling a need with the latest technology. The process is environmentally sustainable and cost effective.

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Posted in Water and Air Education Tagged Photochemical Technology, Portable Water Purification Containers, Portable Water Purifiers, Puralytic Solar Bag, Puralytics. Solar Charging Bags, Solar Bag, Solar Power, water purification Leave a Comment

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