Water Filters

Water filter is the device, which removes impurities and unwanted particles from water either by means of physical processes, chemical processes and/or biological process. Water filter that is used to clean drinking water is called drinking water filter. Water filters are also used to clean water for irrigation, swimming pools, aquariums, etc. Water filter thus is mainly used for softening the water by removing some chemicals, like chlorine. These unwanted chemicals and other contaminants found in unfiltered drinking water can be harmful to health.

Drinking water filter has many benefits. First and the foremost is you get pure water for drinking purposes that tastes and smell neutral. If you are using home water filter like countertop water filter you will get clear water that cost lesser than required to boil water. On the other hand, point-of-use home water filter removes the lead so what we will drink will be totally free from this poisonous substance. Use of home water filter or drinking water filter reduces the chances of developing cancer like colon cancer, rectal cancer etc because we are drinking pure water. Most of the gastrointestinal diseases are prevented after drinking water from drinking water filter. With so many and many more benefits try to have one at your home and office.

Water Filter System

Water is the most essential element besides air and food. So it must be pure before consumption and this can only be obtained by using latest drinking water filter system. Although you can purchase the bottled water but that is an expensive deal. An alternate and permanent solution to this is the installation of water filter system at your home. Water filter system improves the quality of water and make it fit for drinking purposes. Some home water filter system will remove the sand and large substrates but some like reverse osmosis water filter system are so efficient that they can also remove the chemicals from water.

You will find many kinds of water filter systems in the market so no need to worry on this issue. But before buying you must understand your requirement like whether you need simple or high quality home water filter system. The water filter system can be sand separator, screen filter, chemical filter and so on. At home you uses small portable drinking water filter or home water filter but in big industries the industrial water filters are used that are too big and once installed cannot be shifted to another place. Water filter manufacturers, exporters and suppliers are technologically so expert that they churn out every kind of it.

Types of Water Filters

• Charcoal Water Filters
• Ceramic Water Filters
• Ultraviolet Water Filters
• Ionized Water Filters
• Reverse Osmosis
• Water Distillers

Charcoal Water Filter

In charcoal water filters a filter medium is used that is obtained from coconut husk that act as a water filter system. Most of the home water filters are of this kind in which the charcoal absorbs the impurities when water passes through it. Also the solidified carbon blocks are used in the form of honeycombed carbon for water purification. Extra antibacterial protection is given to the charcoal water filter by adding activated silver to it. This type of drinking water filter is also called Chlorgon. It has the bacterial killing and chloramine exclusion ability. On an average the life of charcoal water filter is 6-9 months in a family.

Ceramic Water Filter

Ceramic water filter contains one ceramic filter element called Diatomaceous Earth made up of small silicon shells. It is basically the pore size of this element that defines the purity of water after filtration in this home water filter. The size of the pore keeps the dust, bacteria and debris out of the water you get for drinking after passing through ceramic water filter or ceramic drinking water filter. These types of water filters are basically of two types. pot types water filter and candle type water filter. This is attached to the receptacle below to collect water.

Ceramic water filter also comes as portable water filter. This type of water filter is good where water contain dust or and but not good when the water is contaminated by chemicals as it does not remove any chemical. The flow rate of ceramic filter is also slow like charcoal water filter.

Ultraviolet Water Filters

If your water is contaminated by bacteria or other living microorganisms then use Ultraviolet water filter as the UV rays when made to fall on water, kill all living organism present in it. In Ultraviolet water filters high frequency lights are used to enlighten the water through glass element. Although this system is fantabulous yet you cannot be sure whether it is working or not. This can only be checked after analysing the water in laboratory which is a very tedious job. Because of this reason it is not a preferred choice in the category of home water filter.

Ionized Water Filters

In Ionized water filters the the chemical ionization process occurs. The Ionized water filter is also called water ionizers in which positive and negative electrodes alter the water electronically and results into acidic and alkaline water. The alkaline water has antitoxin properties and used for drinking purposes whereas acidic water is used for bathing purposes. All this happens in the stage two. During stage one, the water filtration is done in which harmful and dangerous contaminants are removed from the water with the help of silver activated charcoal in this drinking water filter. Bacteria, inorganic and organic chemicals, pesticides, detergents and viruses come in the category of contaminants.

Reverse Osmosis

If you want the most effective drinking water filter then there is nothing better than reverse osmosis filters. This water filter is quiet expensive but gives the highest level of protections. Reverse osmosis water filters are mostly installed in big companies, hospitals and offices. In the reverse osmosis process the water is forced to move from high concentration to low concentration across the semi permeable membrane. Very small reverse osmosis water filters are also available in the market that can be used at homes as home water filter. These are called RO.

Water Filtration Technology

Water filters are essential for removing the contaminants from water and make it useful for drinking and cooking. The number of impurities and contaminants found in the water from natural resources are so high that it is not possible for a single water filtration technology to remove all the contaminants. Many technologies target only one or two types of contaminants and they are totally ineffective against others. For example, carbon water filters effectively remove chlorine. Bad taste and odors, but ineffective for removing bacteria and viruses. Similarly, ultraviolet filters are effectively remove bacteria and viruses, but prove ineffective for other contaminants. Typically, the more sophisticated filters, like reverse osmosis, use a combination of filter technologies to achieve overall best results.

Applications of Water Filters

Water filters are used and applied in different types of industries. Some important of them are:

• Bottling Manufacture
• Laboratories
• Hospitals and Patholabs
• Swimming Pools
• Aquariums & Hatcheries
• Pharmaceutical & Cosmetics Industries
• Food Industries

Contaminants	Health Effects	Sources	Most Effective Purification Technology
Arsenic	Skin damage, problem in circulatory system	Erosion of natural deposits; runoff from orchards, glass & electronics production wastes	Reverse Osmosis
Asbestos	Increased risk of developing benign intestinal polyps	Erosion of natural deposits, Decay of asbestos cement in water	Reverse Osmosis Activated Carbon
Cadmium	Kidney Damage	Discharge from metal refineries; Corrosion of galvanized pipes; Erosion of natural deposits.	Reverse Osmosis
Chromium	Allergic Dermatitis	Erosion of natural deposits; Discharge from steel and pulp mills.	Reverse Osmosis
Lead	Delays in physical or mental development of children and infants; Kidney and high blood pressure problems with adults	Erosion of natural deposits; Corrosion of household plumbing systems
Giardia Lamblia	Gastrointestinal illness, like diarrhea, vomiting, cramps, etc.	Animal and human fecal waste	Reverse Osmosis, Carbon Block (0.5 micron)
Viruses	Various Illnesses	Human and animal waste; Septic fields, sewage, farming	Ultraviolet
Bacteria / Coliform	Various Illnesses	Animal & human waste, septic fields, sewage, farming	Ultraviolet
E.Coli	Gastrointestinal Disorders (often severe)	Naturally occurring, human or animal wastes	Ultraviolet
Chlorine	Irritation in eyes/nose; Stomach discomfort	Water additive used to control microbes	Activated Carbon
Benzene	Decrease in blood platelets; Anemia; Increased risk of cancer	Leakage from gas storage tanks and landfills; Discharge from factories.
Carbon-tetra Chloride	Liver troubles; Increased risk of cancer	Discharge from chemical plants and other industries