Posted on May 03, 2011
Type the details of your news item here...By Alexia Nompeli
There are several types of pools: swimming pools, swimming baths, and wading pools used for swimming or other water based recreational activities. These water filled containers (either above or below ground) require the use of filters and disinfectants to maintain a sanitary and decease free swimming pool whether it is used by the general public or exclusively by a few people. Chemical disinfectants and filters are used to prevent growth and spread of bacteria, viruses, algae, diseases, pathogens, and insect larvae.
There are three types of swimming pool filters: Sand Filters, Cartridge Filters and Diatomaceous Earth Filters. Sand filters are the most popular; as the water enters through the diffuser, it goes through the bed of sand, the debris or dirt is trapped within the sand grains, and the water filters though the bottom of the tank and back into the pool. Sand filters filter out debris down to about 40 microns in size, which leaves anything smaller than that not to be filtered out.
The second filter category, the cartridge filters, have the same result at the sand equivalent, only the maintenance is much more efficient since it only requires replacement once or at most twice a year. Finally, the Diatomaceous Earth Filters (DE for short), have plastic grids with fabric covered with diatomaceous earth powder that does the filtering of debris down to five to eight microns, and its considered the most efficient method of filtering.
Consumers’ base their buying preferences on efficiency and affordability; the internet provides an array of information on how to select a filter to accommodate the needs of each individual pool. The most affordable filter would be the sand filter and to calculate the size of tank needed use the following formula: Pool volume (in gallons) / 780 minutes / 15 = Minimum Sand area filter needed.
Cartridge filters offer filtering protection on middle of the road between sand and DE filters. These filters come in a variety of sizes to accommodate all pool sizes, they are easy to replace, and they can be cleaned with the use of a garden hose.
The formula used to calculate the size of the filter needed is: Pool Volume (gallons) / 780 minutes = Gallons Per Minute (GPM)
GPM/0.375 = Minimum Cartridge Area (in the event that the calculation brings the value between sizes, it is recommended to go with the higher size.)
DE filters require more complicated that sand filters cleaning, but they never use chemicals. The sizing of a DE filter depends on their flow rate as oppose to the filter area. The following formula is used to calculate the DE filter size needed: Pool Volume (gallons) / 720 = Required Flow Rate of DE Filter
No matter which filtration system one chooses to use, ensuring the proper cleaning and function of the filters will provide the pools occupants with a safe, clean, clear, fresh looking pool for hours of exercising or leisure activities.