Things You Should Know About Reverse Osmosis Water Systems
Reverse Osmosis Systems are a great way to condition and purify the water you use for drinking, bathing, and washing in your home. One of the major advantages to the reverse osmosis system is its ability to remove contaminants such as bacteria, pesticides, pyrogens, viruses, hydrocarbons, radioactive contaminants, turbidity, colloidal matter, magnesium, sulfates, cadmium, sodium, asbestos, dissolved solids, industrial wastes, chlorine, and detergents from the water that comes into your home. Reverse Osmosis systems improve both the taste and odor of your tap water while using considerably less energy than water purifiers, conditioners, and softeners.
Below are some common questions (and answers) that everyone should know about this economic alternative.
1) What is Reverse Osmosis (RO)?
Reverse Osmosis is the passing of a liquid (in this case, water) through a semi-permeable membrane. The membrane removes impurities leaving behind much cleaner water that can be put to household use. The pores of a membrane are very small: around 0.001 thousandth of a micron. For comparison, the human hair is around 100 microns. Membranes come in varying sizes (usually referring to the size of the pores) as we’ll see below.
2) What is a pre filter?
A pre filter is a filter that works on larger particles usually ranging in size from 30 microns down to 1 micron. As you would expect, a finer pre filter will clog sooner because it catches more impurities. This finer pre filter will need to be changed more frequently. A 5 to 10 micron pre filter is typical for most residential service.
The membrane is the front line of the system. This is where most of the action occurs. For residential systems, there are two primary types of membranes: CTA and TFC. The fist, CTA, or cellulose tri-acetate, works best with chlorinated water but can not function in a pH above 8.5. The second, TFC, or thin film composite, can not handle more than 1000 hours of contact with chlorine and will thus require the use of a carbon pre filter. The TFC membrane can survive in water with a pH up to 11.
Many 4-stage systems are TFC while most 3-stage systems are CTA. CTA membranes should be replaced every year while TFC membranes can go two years before replacement is necessary.
4) What is post carbon?
Post carbon is a polishing filter that removes bad taste and orders. This stage of the process typically occurs after the water is passed through the main membrane (hence the name ‘post’ – or after – carbon). It’s interesting to note that post carbon filters are typically burned coconut shells. Passing the water through this filter gives it a pleasant taste.
Crystal Lake Plumber can provide more information on this excellent water processing option. They are also proud to offer all manner of plumbing services including hot water heater repair, tankless water heater repair, sump pump repair, faucet repair, and toilet repair to the residents of northern Illinois including Kane County, Huntley, Lake County, and Northern Cook County.