Monday, June 1, 2015

Understanding Pool Filtration Systems And Their Advantages

By Tammie Caldwell


Responsible for keeping the entire volume of water in a swimming pool clear and safe to swim in, a filter is one of the most important machines in the operation of a pool. It eliminates dirt and debris which make the water cloudy and can encourage algae and bacteria growth. Both inground and above-ground pools can be equipped with one of several styles of pool filtration systems, each with its own benefits to the user.

The basic function of a filter, regardless of its design, is to rid the water of impurities so it stays clear and does not pose a threat to the health of the swimmers. All filter types operate on the principle of using a barrier of some sort to physically remove debris from the water. These different models differ from each other in price, upkeep, and in the advantages they provide.

Together, the filter and pump work to keep the water clean and clear. The pump forces water into the filter where the impurities are removed, then it returns the clean water back into circulation the pool. A high-quality filtration system will last for many years and can help keep the time and money spent on maintenance and operation down. There are three types of filters: sand, cartridge, and diatomaceous earth or DE filters, all of which can be used with both inground and above-ground pools.

Most common are the sand filters. They work by filtering water through a bed of sand contained within them, which is capable of trapping debris measuring20 microns. Cleaning is easy, all that's needed is to run water through them in the reverse direction. The sand substrate doesn't need replacing for several years in most cases. The fact that they are economically priced and easy to use, makes them a top choice.

Another affordable, low-maintenance alternative is the cartridge filter. The filtering element in this design consists of a removable cartridge which can remove particles as small as 10 to 15 microns. Economical, they have the added advantage of being easy to maintain by using a garden hose or a filter cartridge cleaner to clean them out. In general a new cartridge is needed for each swimming season.

DE or diatomaceous earth filter systems offer the ultimate in speed and efficiency. They can eliminate the very smallest particles of debris which are only 3 to 5 microns in size, and work quickly to produce crystal clear water. The substrate contained within them, known as diatomaceous earth, is a porous, natural rock sediment which has been ground into powder. While typically more expensive, this approach does offer superior results.

With any filter design, it is a good idea to choose a model with a larger capacity than the minimum indicated for the size of the swimming pool. This will mean one has to spend less time cleaning the system. Also, it's helpful to opt for a set-up with minimal pumping, as this will reduce costs for electricity needed to run it.

Ultimately, it is a matter of personal preference. Users who greatly value having ultra-clear water, will be best served with a DE filter, while those who are more concerned with ease of use, will likely prefer a cartridge or sand filter for its relatively simple maintenance.




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