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Fresh water is vital to our health and comfort. Not only count on them to stay hydrated, we use it in many other ways including bathing, cleaning and cooking the meals and wash our clothes. Fresh water has long been a concern of community groups and individuals, and various water treatment systems and treatment technologies have been developed to ensure that tap water is safe for human consumption. But how these different technologies? Compare
Whether you get water from a well water system or a city can be a source of bacteria, runoff, and are contaminated by improper handling. Although water is not dirty, it can contain iron and other hard minerals that can cause stains and build up the body, or chlorine that leaves an unpleasant odor and taste. As a result, many people decide to treat or filter water to improve taste and protection against contamination.
Chlorine is commonly used bywastewater treatment plants and is effective in killing many different bacteria. However, it is not effective against some organisms such as Giardia and Cryposporidium. Both bodies in lakes, rivers and groundwater are found and can cause severe intestinal illness.
As mentioned, many people feel that chlorine leaves an unpleasant taste and odor. In addition, there have been numerous cases where water supply was contaminated in the city, despite the fact thatto be treated. People use the city water supply often with other home water filters and water filters to ensure that the water is pure and tastes good. The three most common options are activated carbon filters, water filters reverse osmosis, ultraviolet light and water treatment.
Each of these technologies uses a different approach to water treatment, and they each have different effectiveness against various contaminants. It can work well to remove the chemicals, but completely ineffectiveagainst bacteria, and vice versa.
In fact there is no single filter or treatment that removes impurities from water. The best approach is to have your water tested for contamination and then buy a water filter that protects the house against the particular contaminants that concern you.
Another possibility is to combine the treatment. Most high-end systems use a combination of charcoal filter and one of the other treatment technologies to achievethe best results. Let's look at different technologies to see where each is effective.
Activated carbon filters
Carbon is one of the most powerful absorbent, and has been used for many years as a means to remove impurities. The absorption of carbon can be further improved with a slight positive electrical charge. This is known as activated charcoal, and is used in many home water filters standard. As water passes over the positively charged carbon, thedesigned negative ions of the contaminants on the surface of the granules of carbon removed from the water.
Activated carbon filters typically use granular activated carbon (GAC) or powdered block carbon. Both work well for filtering and cleaning, but the carbon block filters have been proven to remove more impurities. Both types of activated carbon filters to reduce or remove a wide range of pollutants, including:
or volatile organic chemicals (VOCs)
O PesticidesHerbicides
or chlorine, radon and other chemicals often found in tap water.
All this protection has a relatively affordable package. You can buy activated carbon filter systems that fit on your tap for about $ 30, or you can choose whole house system water treatment technology that uses carbon filter for about $ 100.
However, if they are densely compacted, most carbon block filter is not effective in removing heavy metals and bacteria. For this reason, manyPeople consider the combination of activated carbon filter with one of the other types of water treatment.
Reverse osmosis water filters
Reverse osmosis, also known as hyperfiltration or ultrafiltration, was developed with funding from the U.S. government as a means of desalination of seawater. A water filter reverse osmosis uses a semi-permeable membrane, pure water to pass through, while impurities are trapped from tiny pores in the membrane allowed.
The process requires thatwater can be pressurized to force through the membrane. Most standard residential water systems have sufficient pressure. Such as activated carbon filters, reverse osmosis also use charged particles to help filter out impurities.
The effectiveness of a reverse osmosis water filter depends on the density of the membrane. A membrane with larger pores, of course, lets the larger impurities. It 'also important that the diaphragm regularly for proper cleaningOperation.
Higher quality water filters reverse osmosis using a process known as crossflow to allow the membrane can be cleaned constantly. Crossflow directs some 'of water behind the membrane, sweeping the rejected contaminants, so as not to block the construction and the membrane.
There are two types of membranes commonly used in reverse osmosis water filter - Thin Film Composite triacetate (TFC) and cellulose (TAC). TFC membranes are much more effective is the CTAMembranes, but they tend to be less resistant to the effects of deterioration of the chlorine. This problem can by using an activated carbon pre-filter to remove chlorine, which initially avoided.
Water filters reverse osmosis are available in various sizes and styles to support and whole house water treatment systems. I can filter a long list of pollutants, including:
or treatment of chlorine and other related products
or bacteria
or salts, sugars, proteins
orDyes
or heavy metals
One disadvantage of water filters reverse osmosis is that they are more expensive than water treatment plant activated carbon filter, with an average cost of about $ 300 home system. In addition, the cleaning process is usually a bit 'slower through the use of pressurized water. It 'can produce an entire day to 15 liters of purified water. And a typical reverse osmosis water filter will need up to 8 liters of raw water to produce one liter of purifiedWater.
UV water treatment
As the name suggests, the use of ultraviolet water purification systems, ultraviolet (UV) light to treat water and make harmless microorganisms. The UV light comes from a high intensity lamp that is usually included in a protective tube with quartz. When water passes through the water treatment, UV light damages the structure of an organism and makes them sterile.
Although a UV water purifier requires electricity to operate, is based onthe same amount of energy a light bulb. However, the lamp will be replaced every year to ensure a sufficient intensity.
While whole house UV water purification systems on most bacteria, viruses, fungi, algae and other organisms are effective, they do not remove chlorine, heavy metals, volatile organic compounds or other chemicals. And of UV systems work plan, which expose the water to UV light less time, not all organisms.
UV water purifier average of about $ 700 forHouse entire system, so that initially more expensive than other types of treatments. Moreover, without a pre-filter system, contaminants can build up and the intensity of the UV lamp. For these reasons, many people combine UV water treatment plants with activated carbon filters, which also increases the cost.
As you can see, each of the three main water treatment technologies for its advantages and disadvantages. Decide which is best depends on your budget and the type of water-You want to remove contaminants or to prevent. A test of your tap water will help you add the water filtration system for your needs.
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If our communities to use grain of sand and water filter to treat water chlorination effectively, before coming to us, then why are we "boil water" notice every so many years? Why do so many people still believe that it is not safe enough to drink? And 'confusion.
Of course, the wastewater treatment plants in large urban centers, large and imposing, at the gates. Everything is great, it must be strong enough to ensureDrinking water should not, especially chlorine, when the disinfectant to kill bacteria and viruses of the election? And it poured tons of water before going through a system of aqueducts, pipes and tanks for your home or workplace. Typically, the amount of chlorine in our drinking water is strong enough to clean all the pipes along the path. Chlorine is powerful stuff. It is a powerful disinfectant for heaven's sake.
This thorough process seriouslyleads us to believe that our drinking water is clean and quite safe. So take care of it, right? No error of plus in my drinking water.
Maybe. But what about the smaller towns and rural areas that are less financially equipped? If the amount of chlorine used enough to keep contamination at bay? And as far as chemical disinfectants themselves. In addition to products formed from these chemicals have an impact on our health in the future? Already using aEffect? In heavily populated areas, the amount of chlorine added to water to minimize the risk of further contamination in the lines is strong enough to sniff the tap.
Have you ever thought about the state of the aqueducts, pipes, tanks and storage tanks in the distribution chain? As all lines and tanks out of sight, we tend to forget them. As our time cities, so the water infrastructure. You may be surprised to know that many cities now have water systems through100 years and with incredible materials that we know are harmful to our health. For example, many structures still with asbestos-cement (AC), pipes and storage tanks made of wood. Other tubes, pipes and tanks are too expensive to repair or replace, unless they break. But in both cases would probably be fair to say, these systems have reached the end of his life.
So, how safe and clean is your water supply for the moment comes to your home? There are no errors or chemicalslurks in the water? Sorry, could not be there.
The biggest challenge with existing water treatment processes is that the methods of treatment now can not - not - to remove some pollutants such as hazardous chemical dissolved or small, common parasites such as Giardia and Cryptosporidium, can infect the water supply . An encryption system, for example, has a diameter of only five microns. The spaces between local grain of sand water filters are much larger at around 75Micron. That leaves plenty of room for all types of particles to pass. The water is disinfected with chlorine is not much help; Cryptosporidium is resistant to all practical levels of chlorination.
So, what can you do? One way to kill these parasites is to continue to boil drinking water if there is a boil water advisory in your area or not. Another method is more convenient and safer to use a water filter, at least for drinking water. Most but not all,Water filters for home use is determined to remove chemicals and parasites Cryptosporidium and others. Be careful here. Option refrigerator water filter, for example, is inadequate. Look for a water filter that NSF mark and the "cyst removal" or an absolute pore size of 1 micron or less.
Water Filter - Can a water filter really de-bug my drinking water?
A study of 65 of the 3,000 largest utilities found cities such as Philadelphia, Boston, New York City, Providence, RI, and Portland, ME. "You are manipulating the results from the tests to lead to capture in water, violating federal law and putting millions of Americans in danger,''he told the Washington Post. More than 250 major cities currently more than rules to guide the 'EPA, and many of them were misleading or even fraudulent in their relationship problems.
- NBC NightlyNews
"Take each day that millions of Americans turn on their taps and water that exceeds legal limits for dangerous contaminants."
- USA Today, Special Report
How to get the water dirty?
or any breach or broken water mains (200,000 reported in 2002)
or corroded pipes
Or older homes with copper pipes or lead, or homes with appliances cheapest water containing lead
O overflowing / loss from septic tanks
Degree or pollution / pesticides / agricultureRun-off
o The EPA regulates only 87 of the thousands of possible contamination
Who is at risk?
O children, the elderly, pregnant women, and immunocompromised
o Who is drinking well water or water that is not otherwise regulated
Those who are a disaster or if the water source is injured
What can I do?
Or all the lead filter tap water to drink through a charcoal filter to reduce the radon and arsenic (especially if the preparation of infant formulaFormula)
Always or filter water if you are in the gym, at work or otherwise away from home with a bottle of water filter or portable water filter
Or know where the water comes from (it is regulated by the city? Vulnerable to agricultural runoff?)
or, if appropriate, allow pump or septic tank professionally inspected regularly
o If you drink water, they tested each year by the local health department
or preparation! be!
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