Selecting a Correct Water Purifying Device for Clean Drinking Water

Water purification devices are popular today, because of concerns people have regarding drinking water. Some of these concerns are warranted and some are perceived. Warranted concerns are due to all the polluted rivers and streams in this country. This is why people invest in water purification devices.

Even though public water treatment facilities clean drinking water to meet national standards, the treated water can still smell or taste funny. This is sometimes due to chemicals which are added to clean the water of pollutants.

A desire for water purification brought about a wave of devices which clean drinking water of unwanted tastes and smells. These devices remove unwanted chemicals and also remove chemicals which are good, such as fluoride used to prevent tooth decay.

Many people are concerned with fluoride in their drinking water and real or perceived side effects. These people do not mind fluoride being removed from their water. Regardless of why someone has a water purification device installed, these devices facilitate the consumption of clean drinking water.

Types of Home Water Purification Devices

Water purification devices come in a variety of types and include:

• Backwashing Filters – are used to remove sediment, chlorine, chemicals, tastes, and odors. Do not expect a backwashing filter to be a magic, one-step solution. Often it is the final stage of a more complex treatment system.

• Water Softeners – are used to remove harsh minerals from drinking. These minerals include magnesium and calcium, which leave deposits in sinks and tubs and are unhealthy for humans to drink. This water is typically referred to as hard water, because of all the mineral deposits.

• Ultraviolet Disinfection – is used to remove bacteria, viruses, and harmful protozoa from drinking water. These harmful microorganisms have contributed too many illnesses such as fever, intestinal problems, and diarrhea. This system provides the most efficient purification to energy cost ratio.

• Reverse Osmosis – uses a semi-permeable membrane which allows purified water to pass through, while retaining the impurities on the input side. This type of water purification system removes 90 – 99% of bacteria, salts, particles, proteins, and other particulate matter which contaminates water.

• Distillation Machines – are another water purification device which boils the water to the point it evaporates leaving behind all unwanted chemicals and impurities. Clean pure water is derived from this type of purification device.

• Activated Charcoal Devices – are used to purify water by allowing water pass through the pores in the charcoal which remove unwanted chemicals and impurities from drinking water. Some of the best systems get rid of lead, asbestos, and coliform. Consumers typically choose either the granular and solid block systems.

• Ultrafiltration devices – use a polymer film which chemically attaches to unwanted chemicals and impurities and removes them from drinking water.

• Deionization – uses electric plates to attract impurities and sedimentation as water passes through. It is typically used in conjunction with reverse osmosis devices. This purification device dissolves and efficiently removes inorganic material.

All of these water purification devices use different techniques in removing chemicals, sediment, odors, and minerals from drinking water. Some are come in both portable and permanent models, while others need permanent installation to work effectively. Whatever the reason a person decides to purify their drinking water, these purifications devices are effective.

Popularity: 4% [?]

Enjoy Limitless Pure Filtered Drinking Water For Pennies a Gallon

Reverse osmosis home filtration systems provide large volumes of pure, clean, color- and odor-free water for people, pets and plants. A “hard wired” RO hyperfiltration unit is a convenience easily within reach of the average DIYer.

RO System Basics

A domestic DIY-ready RO system typically consists of several components, often sold as a kit:

1. Filter Array—four to six factory-connected filters mounted on a hangable metal housing. Higher cost systems employ more filters and deliver slightly cleaner water.

2. Holding tank—a 3 to 6 gallon capacity pressurized vessel that stores filtered water ready to flow to a sink- or counter-mounted faucet. Until direct flow systems hit the market recently, the RO process has been too slow to instantly provide a gallon or two of filtered water, hence the need for a tank. Tankless direct flow units are pricier.

3. Faucet

4. Automatic shutoff valve; hoses to connect the filter array to feed water and to the faucet, and for waste discharge

5. Needle-piercing saddle, or standard ball, feed water valve,

Water flows through the filters and is successively cleaned in “stages” as follows:

* Stage 1 Prefilter, 1 – 5 micron—removes sediment, suspended rust and sand.

* Stage 2 Prefilter, granular activated carbon (GAC) 1 to 5 micron—removes most chlorine, organic chemicals, taste, color and odor.

* Stage 3 Prefilter, activated carbon block, 1 to 5 micron—further removes chemical entities Stage 2 filter missed.

* Stage 4 Filter, osmotic membrane—the workhorse filter that gives the system its name. Removes 92% to 98% of all remaining chemicals and dissolved solids in tap water.

* Stage 5 Postfilter, deionization (DI)—removes remaining dissolved solids. Premium systems have 2 of these when ultra pure water is needed for aquariums, hydroponics and laboratories.

Selecting a System: How Large?
Choose an RO system with a filtration capacity sufficient to meet family needs. A unit that generates 3 GPH (gallons per hour) has about the same capacity as one rated at 75 GPD (gallons per day), and is large enough for many households.

Pre-Installation Considerations

1. Many RO systems require a minimum water pressure of 40 psi. Booster pumps are available if pressure is a problem.

2. Consider a whole-house filter, ahead of the RO unit, if incoming municipal or well water is unusually turbid.

3. Choose a spot for the filter array (approximately 18” H x 18” W x 8” D) that’s easy to access, since the unit needs to be serviced twice a year. If the undersink area is too small to stand or hang the array, consider a basement, utility room, etc.

4. Select a location for the holding tank (approximately 18” H x 12” W x 12” D). It can be spotted anywhere up to 30 feet away from the filter unit.

5. If there’s no available kitchen sink-top hole to install the added clean water faucet, replace the kitchen faucet with a pullout spray head model to free up the sprayer hole, or drill a new one in the countertop or sink. Careful: porcelain, marble, granite and some composites may shatter or crack unless a specialty bit and proper technique are used.

6. Supplies needed: common hand tools and Teflon thread paste.

Install the RO System

1. Install the faucet and place the storage tank in desired location.

2. Connect the feed water valve to a cold (not hot!) water line.

3. Hang or stand the filter array and place a drip pan beneath it.

4. Run a water discharge line from the filter array to a utility sink, or into a drainpipe above the trap via a saddle.

5. Connect all hoses and fittings.

Maintaining RO Systems

Except for the osmotic membrane, which lasts two to three years, change out filters approximately every 6 months or 6,000 gallons.

Popularity: 7% [?]