How to Buy Water Purifier
1. You need to determine in which market are you looking for, a water purifier system or just a simple water filter. A simple water filter is just to filter out impurities. A water purifier system has more processing and design to purifier the water by eliminates 99% of contaminants.
2. If you are looking for a simple water filter, you need to browse the water filters options. Water filter comes with different types, dispensers, pitchers, sink filtration unit or faucet mounted water filter.
3. If you are looking for a water purifier system. You need to do some research of the water purifier system. Reverse osmosis and UV water purifier are the most effective methods.
4. You may want to consider UV water purifier for portable water purifier. Portability is one of the highest consideration for UV water purifier and it is very effective in eliminating bacteria and viruses. But you need to consider to have a UV water purifier with filter processing to filter out the contaminants.
5. Reverse osmosis water purifier is the most effective water purifier but RO system is very expensive. RO water purifier is durable and able to generate pure water at all times in your home.
6. Internet is the best place where to buy water purifier and to find best information about water purifier.
Showing posts with label portable water purifier. Show all posts
Showing posts with label portable water purifier. Show all posts
Tuesday, November 17, 2009
Wednesday, October 14, 2009
Portable Water Purifier
Portable water purifier is a device meant for people who must obtain drinking water from untreated sources such as rivers and lakes. There are many portable water purifier available for camping, hiking, and other travel in remote areas. Portable water purifier can be used to remove bad taste, chlorine, odors and other substances like mercury and lead.
Portable pump filters as water purifier are available with ceramic filters to remove pathogens. Some portable pump filters also using activated charcoal filters. These filters with activated charcoal will be able to remove most bacteria and protozoa, but it will not be able to kill viruses with less than 0.3 micrometer diameters. To complete the process of water purification, disinfection by chemicals or ultraviolet lights is required. On the market there are polymer and ceramic filters that incorporated iodine post-treatment to kill viruses and bacteria that cannot be filtered out, but these filters are not advisable due to the possible adverse health effects.
Even though the filter can do great job on removing bacteria and fungi from the drinking water when it is new, but used filters eventually can be colonized by the bacteria and fungi. Silver metal nanoparticles can be bond to the ceramic element and the activated charcoal to suppress the pathogens growth.
Portable pump filters as water purifier are available with ceramic filters to remove pathogens. Some portable pump filters also using activated charcoal filters. These filters with activated charcoal will be able to remove most bacteria and protozoa, but it will not be able to kill viruses with less than 0.3 micrometer diameters. To complete the process of water purification, disinfection by chemicals or ultraviolet lights is required. On the market there are polymer and ceramic filters that incorporated iodine post-treatment to kill viruses and bacteria that cannot be filtered out, but these filters are not advisable due to the possible adverse health effects.
Even though the filter can do great job on removing bacteria and fungi from the drinking water when it is new, but used filters eventually can be colonized by the bacteria and fungi. Silver metal nanoparticles can be bond to the ceramic element and the activated charcoal to suppress the pathogens growth.
Saturday, October 10, 2009
Water Purifier: Reverse Osmosis
Reverse osmosis is a process involving a diffusion mechanism and it is working by the use of pressure forcing a solution through a membrane, to retain the solute on a side and to allow the pure solvent passing to the other side. There is a dependency on pressure, influent solute concentration and water flux rate to determine the efficiency of the separation of the diffusive mechanism. This method is reversing normal osmosis process which why it is called a reverse osmosis.
Membranes that is being used for reverse osmosis is having a layer which is dense enough in the polymer matrix where the most separation of the diffusive mechanism occurs. The membrane is being design only to allow water to be able to pass through the dense barrier layer in the polymer matrix and to prevent solutes passing through. The reverse osmosis process needs a high concentration side of the membrane to exerted by a high pressure, for brackish and fresh water 2-17 bar usually sufficient enough, but for seawater the pressure would need 40-70 bar, which natural osmotic pressure must be overcome that is around 24 bar.
The process to get fresh water by removing salt from sea water is called desalination. It is one of the processes of water purifier. Desalination also has been used for medical, domestic and industrial applications for water purification.
Water purifier systems which households around the world are using for drinking includes a reverse osmosis method. The reverse osmosis method is used to improve the quality of water to drink and cook.
Water purifier systems for drinking and cooking are typically using sediment to filter particles including calcium carbonate and rust then the water has to go through an optional second sediment filter with smaller pores for better filtration. To trap chlorine and organic chemicals, water purifier is using an activated carbon filter. A second carbon filter optionally is used to capture the chemicals which could not be removed by a thin film composite membrane, a reverse osmosis filter. The chlorine and organic chemicals which is trapped by the activated carbon filter has the ability to degrade the thin film composite membranes which is known as TFC or TFM. Then any escaping microbes from the reverse osmosis membrane filtering are going to be disinfected by a ultra-violet lamp.
Reverse osmosis for home water purifier has disadvantages, as because household have low back pressure it uses a lot of water. The result of the low back pressure, the water purifier which is using reverse osmosis method only recovers 5% to 15% of the water that enters the water purifier system. The remaining water, 85% to 95% is considered as waste water and is being discharged. Methods to recover the waste water are not considered for household systems as the waste water carries the rejected contaminants. Water purifier using reverse osmosis method is more suitable for large scale industrial system as the large scale industrial system can generate high pressure which is essential for reverse osmosis filtration and can give efficiency in the production. Mineral from boiler water at power plants can be removed by using reverse osmosis method. Reverse osmosis method is more suitable for industrial sector.
Membranes that is being used for reverse osmosis is having a layer which is dense enough in the polymer matrix where the most separation of the diffusive mechanism occurs. The membrane is being design only to allow water to be able to pass through the dense barrier layer in the polymer matrix and to prevent solutes passing through. The reverse osmosis process needs a high concentration side of the membrane to exerted by a high pressure, for brackish and fresh water 2-17 bar usually sufficient enough, but for seawater the pressure would need 40-70 bar, which natural osmotic pressure must be overcome that is around 24 bar.
The process to get fresh water by removing salt from sea water is called desalination. It is one of the processes of water purifier. Desalination also has been used for medical, domestic and industrial applications for water purification.
Water purifier systems which households around the world are using for drinking includes a reverse osmosis method. The reverse osmosis method is used to improve the quality of water to drink and cook.
Water purifier systems for drinking and cooking are typically using sediment to filter particles including calcium carbonate and rust then the water has to go through an optional second sediment filter with smaller pores for better filtration. To trap chlorine and organic chemicals, water purifier is using an activated carbon filter. A second carbon filter optionally is used to capture the chemicals which could not be removed by a thin film composite membrane, a reverse osmosis filter. The chlorine and organic chemicals which is trapped by the activated carbon filter has the ability to degrade the thin film composite membranes which is known as TFC or TFM. Then any escaping microbes from the reverse osmosis membrane filtering are going to be disinfected by a ultra-violet lamp.
Reverse osmosis for home water purifier has disadvantages, as because household have low back pressure it uses a lot of water. The result of the low back pressure, the water purifier which is using reverse osmosis method only recovers 5% to 15% of the water that enters the water purifier system. The remaining water, 85% to 95% is considered as waste water and is being discharged. Methods to recover the waste water are not considered for household systems as the waste water carries the rejected contaminants. Water purifier using reverse osmosis method is more suitable for large scale industrial system as the large scale industrial system can generate high pressure which is essential for reverse osmosis filtration and can give efficiency in the production. Mineral from boiler water at power plants can be removed by using reverse osmosis method. Reverse osmosis method is more suitable for industrial sector.
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