Puralytic: Solar Bag Technology for Water Purification

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.

Aquabox: Rapid Response for Safe Drinking Water

AquaboxImagine creating a plastic box that would serve a multifunctional purpose for disaster victims. Aquabox, a charitable company registered in England, provides boxes for water purification to dispatch to areas where severe disasters strike. The aftermath of a disaster can leave victims in desperate need of core necessities like food, water and shelter. One of the most urgent challenges for disaster relief agencies is getting fresh, clean drinking water to those victims. Sometimes polluted water is the only source of water. Waterborne contaminants can rapidly cause epidemics such as typhoid and cholera. Many of the outbreaks of disease and infection that result from drinking polluted water could often lead to dehydration and diarrhea, particularly striking the very young.

Aquabox is a robust plastic tank packed with water purification tablets and essential welfare items for a disaster situation. Once the welfare contents have been removed, each Aquabox can be used to purify up to 1100 liters of polluted water, making it safe and pleasant to drink. For example, 1100 liters is equal to 5,000 cups. This is enough safe drinking water for a family of four to consume 10 cups of water per day, for about four months.

This survival box is filled with welfare items such as warm clothing, kitchen utensils, hygiene items and other general hardware. The actual contents depend on the individual or organization that donated and filled the box. By the millennium, Aquabox provided more than 20,000 boxes covering over 30 countries. During the past several years, many aid agencies received and monitored boxes such as Children’s Aid Direct, Feed the Children, Christian African Relief Trust, Containers of Hope and Nottingham Police Aid Convoys.

Clean drinking water can mean the difference between life and death. In the wake of mammoth disasters, natural and manmade, Aquabox is dispatched to areas in dire need of safe drinking water. Under the provisions of their charitable status, Aquabox seeks a donation in return for the box rather than making an outright sale. Aquabox can play a vital part in minimizing the after effects of a disaster.