Sand filtration has been in use for many decades and it is still found to be very effective
. Engineers widely using this method and some even have made improvements on the old method. In order to make it suit your different needs, tailor made products like filter sand and Filter Gravels will help build better filters. It is a low cost method and is capable of removing all major impurities.
Filter sand
Filter sand can also be used by water treatment plants. Most companies have standard sized particle but a few good companies can provide uniform, custom sized Filter Sands as per your requirement. If you dont have the exact specification of your requirements, samples can be given too. Water Filtration Sand should be durable and should have a slow rate of breakdown. Good filter sand will allow for backwash which is used to clear blockage. The amount of filter media used will determine the depth requirement of the filter.
Filter Gravel
Filter sand is usually used over Filter Gravel in water filters. The filter media will be supported well on good Filter Gravels which have a slow breakdown rate themselves.
The fine medium with a large surface area contains suppressive microbes and it also forms a physical barrier against spores. The lower part of the Filter Gravels has outlet pipes through which the clean water passes out. There are different grades in gravels as well as sands and a suitable one must be chosen for maximum efficiency.
Efficiency
Efficiency of a filter will depend upon the distribution of the particle size of the Filtration Sand over the Filter Gravel. The Filter Gravels form a drainage system that will prevent the passage of sand into the outlet of the filter. The overall efficiency depends on how well the sand and Filter Gravels are packed. These can be used in the construction of both drinking water filters as well as larger pool water filters. If you are planning a modification, try on a pilot scale and check if it works before you start working on the main project.