Water Filters

April 3, 2008

Water filters

by Marjorie Wyman

Charcoal water filters

These systems are easy to install, relatively inexpensive, and cover the basic functions of filtration. Water filter charcoal medium carbon is derived from coconut husk. This absorbs impurities as the water passes through. This form of filter comprises possibly 95% of those in use domestically. They are simple to install, relatively economical, and depending on micron level, will filter out the most deadly of contaminants, Cryptosporidium and Guardia.

Some charcoal filters are enhanced by the use of activated nano-silver, which provides extra antibacterial protection, killing around 650 known types of organisms. Minerals in solution can still permeate a charcoal filter. These minerals are essential to health.

In situations where sediment is a problem it is worthwhile to add a second separate in-line sediment prefilter. Otherwise the more expensive charcoal filter will become clogged up long before its normal lifespan.

Founded in 1984, KDF® process media are high-purity copper-zinc formulations used in pretreatment, primary treatment, and wastewater applications. KDF media supplement or replace existing technologies to dramatically extend system life, reduce heavy metals, microorganisms, scale, lower total cost, and decrease maintenance. They are 100 percent recyclable and contain no chemical additives. They are generally used in place of, or in conjunction with, granular activated carbon filters KDF Fluid Treatment’s combination of copper and zinc creates an electro-chemical reaction. During this reaction, electrons are transferred between molecules, and new elements are created. Some harmful contaminants are changed into harmless components. Free chlorine, for instance, is changed into benign, water-soluble chloride, which is then carried harmlessly through the water supply. Similarly, some heavy metals such as copper, lead, mercury and others, react to plate out onto the medium’s surface, thus being effectively removed from the water supply.

Ceramic water filters

At the core of the ceramic filter element is Diatomaceous Earth, a fossil substance, made up of tiny silicon shells left by trillions of microscopic, one celled algae called diatoms that have inhabited the waters of the earth for the last 150 million years.

Some ceramic filters incorporate nano-silver impregnated into a porous ceramic outer shell that can trap bacteria down to as low as .22 of a micron in particle size [1/100,000 of an inch].

Laboratories consider a filtering medium with an effective pore size of .01 micron to .45 micron to be bacteriologically sterile and .45 micron to 1.0 micron to be bacteriologically safe. Re-growth of bacteria that becomes trapped either on the outside of the element or in the ceramic’s pores is controlled by the silver which, on contact with water, releases small quantities of positively charged metals ions.

These ions are taken into the enzyme system of the bacteria’s cell and thereby neutralize it. The flow rate of the ceramic filter can be renewed by brushing its outer surface under running water. As the top layer of ceramic and contaminants are brushed off and flushed away, a new layer becomes available.

Doulton (of Royal Doulton Ceramics, England) established in 1827, at a time when the Thames was heavily contaminated with raw sewage; cholera and typhoid epidemics were rampant, have been manufacturing and developing ceramic-based systems for over 180 years. Their ceramic filters can be used in conjunction with other systems such as reverse osmosis and infra red.

Reverse Osmosis

Basically draws water through an extremely fine membrane. The membrane acts like an extremely fine filter to create drinkable water from contaminated water. The contaminated water is put on one side of the membrane and pressure is applied to stop, and then reverse, the osmotic process. It generally takes a lot of pressure and is fairly slow, but it works. The result is extremely finely filtered water. This is similar to distilled water where all the minerals are removed, which may lead to an even larger issue of its tendency to dissolve substances with which it is in contact. Notably, carbon dioxide from the air is rapidly absorbed, making the water acidic.

APEC, Advanced Purification Engineering Corp systems are designed and made in the United States. In business for18 years it is one of the few manufacturers whose materials and parts are entirely manufactured in the United States and certified by the FDA and NSF International (National Sanitary Foundation).

Single Flow Magnetic Filter

When water flows through a magnetic field (whether it is electrically induced or induced using magnetic media such as Magnetite), it experiences a polarization of minerals and a change in the ionization of these minerals. The result can be softer water, ‘smaller’ water molecules that may give far greater hydration, and a limited form of negative ionization of the water, imparting some antioxidant effect.

Although single flow systems certainly work to some degree, the fact that they do not split the water into magnetically opposite streams (acid and alkaline) means that they will reform within a short period and therefore must be consumed immediately.

Far Infra Red Systems

A number of systems include the use of Far Infra Red Energy. This is a completely natural form of energy that emanates from certain minerals, the most effective being the semiprecious gem, Tourmaline. Other minerals are used, often under proprietary brand exotic names, to enhance their perceived ability. Far Infra Red energy (FIR) has the ability to soften water, to negatively charge it, and to restructure it into smaller molecular clusters which may assist in hydration of the body. Most systems use FIR by including it in the replaceable filter.

Not yet available, but in the works a system from Aqua Technology Water that is so efficient it is the first practical solar powered distiller which can produce enough water for a small family during an 8-hour daylight period using a single, small solar panel.

Catalytic Conversion Water Filters

These systems convert heavy metals, chlorine, pollutants and viruses into harmless oxidized form, breaking them down to their basic elements. Because they do not filter the water, they need no filter. They also negatively charge the water and alkalize it.

Water Ionizers

As water passes between a series of magnetically charged plates and a ceramic separator filament, the magnetic field draws alkaline minerals to one side of the ceramic filament, and acid to the other.

Today alkaline and acid water is used in a huge number of hospitals and clinics, both for consumption and wound healing in place of expensive drug regimens. A water ionizer may be attached to the kitchen tap or installed under sink. It filters the water first, and then alkalizes and acidifies it via the ionizing chamber, creating the two streams of water.

Alkaline water is used for drinking. Acid water is used for dermal application. It may also be used for household cleaning because it is a powerful antiseptic. Domestic models will provide water at the same rate as a kitchen tap.

Your water must have minerals in to facilitate the magnetic process. For this reason water supplies that hold very little minerals may not be as suitable.

Go to www.BlindGuru.com , click on water ionizers and take their Water Ionizer Quiz. This will help decide which water ionizer will fit your needs the best. The site is for Healthrelated issues and they act as a co-op for purchases. They appear to be totally objective and not profit-driven.

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3 Responses to “Water Filters”

  1. Matt Says:

    Wow, what a bunch of nonsense on the whole alkaline water thing. I would love to have the author list a single US hospital that uses alkaline water.

    Also, as for RO water becomming acidic, that is true but you have to know some acid/base chemistry to keep from being fooled by the comments about acidity. A little as 4 ppm carbon dioxide will move the pH of ultra-pure water down to 4. But carbon dioxide becomes carbonic acid in water (a WEAK acid) and carbonic acid is also what floats around in our blood before being expelled through the lungs, making carbon acid the largest buffer in the body. While pH 4 might sound very acidic, there would be nothing that would make it dangerous to drink. A speck of baking soda (sodium bicarbonate, a WEAK base) would raise the pH back to 8. So without buffers the pH in pure water can be easily moved.

    Rather than an ionizer, I would get a PWS™ BEV Series system from Pure Water Systems, Inc. If you want alkaline get the pHPlus™ Module add-on, which will take the extremely pure BEV drinking water and raise the pH to 9.5 by adding back a few alkaline trace minerals.

  2. Virginia Says:

    I’m extremely happy to hear of all this information about water filters. I believe if people had any idea what they were actually drinking from individual bottles or from the tap, they would be astonished. All of these filters do their work, but do they give you 99.9% pure water???? Xziex can and it makes water from air. It’s not magic, it only seems like it. This machine will change the water crisis globally and I want to get the word out on this amazing invention. What would you do for 99.9% pure water and never have to turn on your tap??


  3. Thanks for the great info. That really is a greate list that sums up the different methods wonderfully. It really is important to work out what’s best for your needs and you’ve done a wonderful job.


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