Sand and Carbon Filter
The sand and carbon filter is used after the water (water) purification process to achieve the complementary removal of solids and disease-causing contaminants that are still suspended and not destroyed. The sand and carbon filter is equipped with an automated backwash system in order to maintain a high level of efficiency.
Why do people care about water (water) filters?
Most people are interested in drinking pure drinking water that does not contain minerals and impurities, and therefore does not lead to health problems such as cancer, kidney and liver diseases. They are also interested in obtaining pure water (water) that does not affect the growth of children, so they all resort to buying filters to purify the water (water) to be suitable for drinking.
The sand and carbon filter is effective for removing impurities, taste, color, odor and their pathogens, gases and chlorine from drinking water (water). However, the first correct step in this field is to test the tap water in the home or institution by accredited laboratories, in order to find out what it contains of impurities, and then choose the appropriate filter based on the result.
It is also necessary to maintain the filter after its installation, by maintaining it, and cleaning it from time to time from the pollutants that accumulate in it.
Sand and Carbon Filter Components
Multimedia filtration and activated carbon systems have gone through many stages of troubleshooting to obtain satisfactory results, and today these systems use the following media: silica sand (silica), anthracite, activated carbon and gravel.
Silica sand (silica) is a granular material containing quartz and minute amounts of coal, clay and other minerals, and is universally regarded as a highly effective filter media. Silica sand (silica) is also known as quartz sand and artificial sand. Silica sand specially graded for water filtration systems can block sediment and impurities from water (water).
Anthracite is black coal that contains more fixed carbon than any known coal on the planet. It has been used as a method of water filtration since ancient times. Anthracite is crushed for use as a medium-density filtration medium.
Activated carbon is a strong black charcoal that has a lot of pores with a very large surface area. Activated carbon is used to remove chlorine and some types of heavy metals attached to organic molecules. Activated carbon removes more water pollutants than regular carbon.
Gravel is a semi-angular, firm, durable and dense grain of mostly siliceous material. Its physical properties are among the world’s best available for water purification applications.
Carbon Sand Filter Efficiency
The efficiency of the sand and carbon filter depends on several factors, the most important of which is the turbidity and the total (suspended solids), as with the increase in the proportion of plankton and turbidity, the amount of the components of the sand and carbon filter and the capacity of the filter or container must increase, in order to increase the period between the cases of saturation of the filters with sediment and plankton. , thus increasing the time between backwash operations and increasing filter efficiency.
During the backwash process the water flows in the opposite direction to the normal flow of the service. The backflow rate must be high enough to allow the pollutants from the loose filters to escape away into the wastewater through the wastewater pipeline where they are disposed. The backwash process takes about 10-15 minutes, then the filter is clean with high efficiency.