An Australian Invention for Low Cost Water Purification

An Australian invention that will convert almost any source of contaminated water into Clean Healthy Drinking Water.


http://www.solarwaterpurifier.com/

The Solar Water Purifier™ has no moving parts, no electronics, no costly filters and uses no chemicals. Water enters a chamber of cascading trays, and as the sun shines through the glass into the water, the sun’s radiated heat rays are partially absorbed by the water and then more completely by the black plastic panel of cells. The heat is then conducted to the water which vaporises and condenses on the underside surface of the glass and then runs down into the purified water collection channel. ‘The Solar Water Purifier™’ will convert many types of contaminated water, including sea water into ‘Potable Healthy Drinking Water’. By using the sun’s energy to convert impure water into clean, safe and healthy drinking water, the Solar Water Purifier™ is the worlds most advanced and efficient solar evaporation water purification system. The evaporator tray must be kept wet at all times to reduce the effects of UV rays on the plastic panel from sunlight. Stringent testing of many water samples containing different forms of toxins and chemicals including arsenic, have been tested under NATA Laboratory conditions. The results produced figures ‘far better’ than the ‘standards’ recommended by the World Health Organisation (WHO) for Drinking Water requirements. The system performs better with Acidic Water samples, however prior to installing a system water test results can be verified with the SWP System supplier. Petroleum and caustic liquids cannot be used with the Solar Water Purifier. Working at an ambient temperature between 35°C and 40°C, the water within the Solar Water Purifier is heated to more than 85°C. This pasteurizing effect partially kills bacteria and pathogens dramatically reducing the risk of water borne diseases. Prolonged exposure to the sun’s ultra violet light transmitted by the special glass cover completes the germ killing process. It is best to discard the 1st hour (5 litres) of Purified Water as part of the operational maintenance procedure. Water output is purified to a level of 1-2 parts per million (ppm) of totally dissolved solids, which is better than standards recommended by the World Health Organisation (WHO). Operating Solar Water Purifier systems have produced results with sea water which was initially measured at 35,000 ppm and the resultant output purified water was tested at 1-2ppm. Because the Solar Water Purifier™ uses the sun’s energy, it is very simple to use and it has no moving parts, therefore there is hardly any maintenance. The cleaning maintenance is an easy procedure which is generally completed by filling the panels with a solution of citric acid in clean water and leaving the panels to soak for about 2 hours, then flushing to remove the citric acid. Solar Water Purifier™ units can be connected together to produce larger quantities of water for communities. How SWP Works The unit works by receiving impure water to an inlet at the top of a ‘cascading tray’. The trickle of water gradually flows down through each chamber to an outlet at the bottom of the unit. As the temperature of the water rises due to the suns heat, the water vaporizes and then condenses on the under side of the glass panel. Droplets of water slowly run down the glass to a pure water channel which transfers the clean water into a ‘clean water container’. Low Maintenance Very little maintenance is required, in fact the purifiers are self cleaning while water is running through the units. Very Low Operating Cost Operating from the sun’s energy the Solar Water Purifier™ is the most efficient device to produce pure healthy drinking water. The Solar Water Purifier™ has no moving parts, no electronics, no costly filters and uses no chemicals to purify water. Water output is purified to a level of 1-2 ppm (parts per million) of totally dissolved solids (TDS), which is better than standards recommended by the World Health Organisation. Operating Solar Water Purifier systems have produced results with sea water which was initially measured at 35,000 ppm, and the resultant output pure water was tested at 1-2 ppm (TDS). Total Dissolved Solids (TDS) in parts per million (ppm). This value indicates the presence of inorganic chemicals such as carbonate, sulphate and chlorides, as well as metals such as sodium, calcium etc Working at an ambient temperature of 35°C, the water within the Solar Water Purifier is heated to more then 85°C, and this pasteurizing effect partially kills bacteria and pathogens dramatically reducing the risk of water borne diseases. Prolonged exposure to ultra violet light transmitted by the special glass cover completes the germ killing process. The Solar Water Purifier™ has been tested under strict NATA laboratory conditions with Total Bacterial Count, E.coli and Coagulase positive Staphylococci at 37,000ppm. All tests resulted in a bacterial count of less than 20ppm which is below recommended World Health Organisation Standards. The SWP Arrays can be set up with a small feed water tank by gravity feed. An in-line tap restricts the flow to a desired level, and if there is too much water flowing in to the array, overflow output returns this water back to the feed water tank. The Clean Water output from the Solar Water Purifier array is gravity fed into a large, closed clean water tank for storage. The more sunlight the better the SWP array performs, however on slightly cloudy days, the SWP units will keep working as the built-up-temperature in the Array and in-feed tank would have been heated to a reasonable temperature. To obtain even greater purified water output, several sets of 12x Array SWP systems can be banked together. The banked arrays can all be supplied from a single impure input water feed tank. The Clean Water output for a 12x array system operating in Southern Australia can produce on average 30 - 40 litres of pure water at an ambient temperature of 35° C Clean Water Output at a latitude of 20° from the equator from a 12x array may be around 50 to 60 litres at an ambient temperature between 35°C and 40°C. The SWP Panels have been engineered to international standards, using components that maintain quality of purified water and withstand a range of environment conditions.

The Solar Water Purifier™ Just add Sunshine The World’s most advanced Solar Water Purifier System