Water Filtration Featured Article

Guide To Whole House Water Filter

More people are getting concerned about the quality of the water that flows through our taps for drinking, showering and cleaning purposes because even though it passes quality control, which is monitored by the local Environmental Protection Agency (EPA) and is certified drinkable there are many minerals and even bacteria that still exist and can damage our health, skin and appliances.

Here is why you should consider installing a whole house water filter system in order to avail guaranteed clean water for every requirement you have in your household.

Choosing The Whole House Water Filter System Best For You

There are a variety of whole house water filter systems that you can choose from and the main deciding point should be the answer if the house in which you are going to install it is rented or owned; for rented houses you will require whole house water filter systems that can be removed when you decide to move while for your own home you can invest in the more expensive types that are advantageous in the long run and do not need removing.

Whole house water filter are installed directly in the pipe at the source from where water is supplied to the entire house and can cost anywhere from $99 to a few thousand dollars depending on the brand, type, size and life span it carries. All whole house water filters need changing periodically and that needs to be taken in calculation when you decide on any one type, as that can cost you considerable taking in account that the flow of water through this filter of higher than that from just a tap and an inexpensive whole house water filter will probably makes its money in the filter replacements.

Benefit Of Clean Healthy Water Everyday

Having a whole house water filter system will put your mind at ease anytime you choose to use the water whether it is for drinking purposes, washing or cleaning and the impact will soon be felt in the taste of the water, healthier skin, soft hair and better functioning appliances. All these benefits from the whole house water filter system will in fact add to your savings as you don’t need to buy bottled water, expensive lotion for treating your skin problems, masks and treatments for your hair and not to mention maintaining and repairing appliances such as the washing machine or dish washer, which can cost an arm and a leg.

Another good part is that the water that gets to go back into the drains is also free of chemicals, minerals and bacteria, which means you are protecting the environment as well.

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May 21, 2007

Reverse Osmosis Water Filtration in Your Cooler?

Tip! Fortunately a process of reverse osmosis does not have the same amount of bacteria infecting the water. Instead of harboring bacteria reverse osmosis, purifies even the dirtiest of water.

The number of gallons being flowed through water coolers has nearly doubled in the last half a decade, due to the growing concerns about the safety of tap water. The increase alone isn’t directly sourced from offices but also schools, universities and hospitals are opting to exchange their water coolers for reverse osmosis systems.

This change is primarily motivated by the fact that coolers can provide the perfect breeding grounds for high amounts of unhealthy bacteria, which can cause diarrhea and unsettled stomachs. In a study conducted on a Boston University campus which examined their own water coolers, dangerous levels of potentially harmful bacteria were found. Of the ten water coolers that were tested, each contained a count exceeding 2,000 times the government’s recommended quantity, or four times the 500 organism ceiling. These bacteria are not thought to be present when the water is delivered, but rather the dispensers and spigot are thought to be the major cause for concern. When connected to the cooler the bottle is sitting in a contaminated holder thus infecting the clean drinkable water.

Tip! The process of reverse osmosis is of immense benefit to mankind. The most common application of the process of reverse osmosis is in purifying water.

Fortunately a process of reverse osmosis does not have the same amount of bacteria infecting the water. Instead of harboring bacteria reverse osmosis, purifies even the dirtiest of water. The process is called reverse osmosis given that that the method requires pressure to force unpolluted water through the membrane, leaving the impurities behind. Reverse osmosis process uses a semi-permeable membrane to separate and remove dissolved solids, pyrogens, submicron colloidal matter, viruses and bacteria from the water. This technique leaves no space for the common bacteria found in today’s drinking water as it removes almost 99% of the total dissolved solids (TDS) and 99% of all bacteria, leaving the user with fresh clean drinkable water. Prices of reverse osmosis systems cost one time payment of $149 US. In comparison to the Water dispensers there is a significant difference. The lone standing base itself, costs starting at $122US plus the bottles of water. The expenses are endless and there is no guarantee your water is as clean as the reverse osmosis systems.

Tip! Essentially the most significant difference between normal osmosis and reverse osmosis lies in pressure. To enable reverse osmosis, artificial pressure is applied to a quantity of polluted water.

The author is a regular contributor to http://www.osmosis1.com and permission to reproduce this article is given only on the basis that all links remain active and intact.

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May 19, 2007

Reverse Osmosis and Deionized Water Filtration

Tip! Often diffusion and reverse osmosis are, in fact, confused. However, the diffusion concept is irreversible and the process of reverse osmosis is as the name suggests, reversible.

Let’s face it if you are in a business needing de-ionized water or reverse osmosis water you are always concerned about the quality of your water. I know as a mobile detailing business that when we have ultra clean water in our tanks we are a happy camper. We know it will make your job so much easier. We also like the idea and concept of spot free water. Have you ever considered how Reverse Osmosis really works? Let me describe the process from my industries perspective.

In R.O. water pressure forces water through a fine membrane that filters out between 85-95% of the dissolved solids in the water. Water lacking these solids won’t water spot a car. It’s important to have soft water filter inline the R.O. system prior to R.O. Some systems have a water softener/carbon filter/R.O. system in that order. This saves life on the R.O. membranes. R.O. units are measured in gallons per day (GPD) because there flow is relatively slow. Usually they run twenty-four hours a day and the water is put into a storage tank to be used later. Small R.O. units that cost between $2,500 and $5,000 put out 4 gpm. To go to 10 gpm, the speed at which you’d want to fill your tank, the cost of those units starts at $25,000.

Tip! The human body is the perfect place to begin looking at the process of osmosis and thus take our first step toward understanding reverse osmosis. Osmosis is the primary means by which water is transported for use in the human body.

Car washes need units that make between 500 to 1000 gallons a day for the rinse cyles. A small unit will work because 4 GPM (gallons per minute) X 60 minutes is 240 gallons. So, in four hours at night when the car wash isn’t being used, they will have one thousand plus gallons. The only problem for them is that a thousand gallon tank is five feet wide and eight feet tall.

An R.O. machine works best when it‘s running clean water through it. Otherwise, the membranes let nature take over. Then you have not reverse osmosis but osmosis. It’s better to have a small machine running twenty-four hours a day than a big machine running two hours and then shutting off. R.O. membranes should have a constant positive flow through them. Some industry leaders believe twelve to thirteen hours is the maximum you should run an R.O. unit a day. They think the machine will last longer.

Tip! Essentially the most significant difference between normal osmosis and reverse osmosis lies in pressure. To enable reverse osmosis, artificial pressure is applied to a quantity of polluted water.

Silica, iron, aluminum and bacteria cause irreversible damage to membranes and that’s why pre-filters are a must to keep membranes from fouling. Fouling results when particles suspended in the feed water are deposited within the R.O. unit. Fouling reduces permeate flow rate. Bacteria fouling usually doesn’t cause the permeate conductivity to increase until your system is extremely plugged. Other particles may cause permeate conductivity to increase.

Most biological and particulate silica foulants can be removed with the proper chemicals. Bio-fouling is a problem. Pre-treatment may have little impact on R.O. unit fouling. Simply killing the bacteria won’t work because the same number of fouling particles (living or dead) still enter the R.O. unit. The best way to handle bio-fouling is cleaning the equipment and the upstream pipes and filters. Chlorinated water will be bad and should be un-chlorinated before entering the R.O. unit. Fouling by non-living particles is handled by your pre-filters, or additional sediment filters or cartridge filters with a nominal filtration rating of five microns or less. This can be complicated stuff and you can call your franchsior for a telephone number of a fair and honest local or regional water purification consultant.

Tip! While a Reverse Osmosis system does effectively clean water, it does not disinfect it. The membrane that is used for filtration can and will remove biological contaminants, but it should not be relied upon solely to treat contaminated water for human consumption.

Chlorine is the most common agent to chemically attack and destroy the polyamide thin film membranes that are commonly used in car washes. Activated carbon blocks are used generally in filters upstream from R.O. units. Larger units use granulated carbon filters or other methods. Active chlorine consuming sites on the activated carbon material is depleted over time and eventually dechlorination will diminish and finally cease. This will allow chlorine to damage downstream chlorine sensitive membranes in your R.O. unit. Carbon filters must be replaced as frequently as their manufacturers specify.

Most commercial R.O. units are too small to justify installing instrumentation to determine when to clean them. Cleaning periodically can remove most scalants and foulants. If you wait too long permanent damage will be done and proper cures will not work. If you wait until you have low flow problems, the elements may be plugged significantly and chemical cleaning may be ineffective or may take many hours to get the elements back to near original performance.

Tip! Portable reverse osmosis units are gravity powered and need neither a pump nor electricity. The water is pushed through the filters due to the pressure of gravity.

If you want, you can have the R.O. dealer do periodic cleaning on a service contract. It may be worth your while. Expect to pay between $80 to $160 per quarter. Watch for parts price gouging. Some companies are like sharks. If well taken care of, the membranes will last years. You may want to have a technician also check upstream filters. That way, if anything does go wrong, it’s their responsibility and you can make them pay. Make sure your contract is tied to their lifetime warrantee. Regular Maintenance Of Reverse Osmosis Units is ultra important and you should change your prefilters often. Water softeners every month, carbon filters quarterly. Be sure to check the pressures weekly and membranes will need changing every so often too. Think on this.

Tip! The process of reverse osmosis is of immense benefit to mankind. The most common application of the process of reverse osmosis is in purifying water.

Lance Winslow

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