Filtarasion

sand filter A sand filter (filter document) is a device for water purification that is made of a tank (containing sand or pure sand) made of steel, concrete or fiberglass or a polyethylene FRP tank that is made in the form of a cylinder or a cube and physically causes Removal of solid and suspended particles, mud and biological suspended particles up to 50 microns. Sand filter is considered as the most widely used equipment in the filtration of suspended solids in water. Sand filters can easily capture suspended particles in water up to 50 microns, or in simpler words, reduce the turbidity of water and, as a result, bring water clarity. They use a sand filter to remove physical biological suspended particles in water and filter water up to 50 microns in diameter. Impurities in water include organic matter, bacteria, mud, color and plankton. Purified water is slowly poured into the sand filter tank and the dirt particles in the water are captured by the sand (silica) and the purified water is directed to the consumer through the filter holes. This filter technology is particularly suitable for pre-treatment of disinfection equipment, recirculation systems, wash water processes, irrigation systems, pond water treatment, pool water treatment and groundwater cleaning. Sand filter is part of the initial stages of water purification, and after that, carbon filtration is used in the next stages. Sand filters are made horizontally and vertically. The diameter of the vertical filter is from 0.5 to 3 meters and its height is from 0.5 to 2.5 meters. In the following, several types of sand filters are explained. The effluent from the primary septic tank (Imhof tank) can be fed into a strainer. The environmental conditions of this filter are such that biological factors grow on its fixed surfaces and consume the organic load of the wastewater that is in solution and reduce the pollution of the wastewater. The more biological growth on these surfaces, the better the efficiency of wastewater treatment. For this reason, P.V.C. media and granular sand are used in it, which have more surfaces and less volume. Due to the fact that the treated wastewater is discharged through this porous environment and the suspended materials and parasite eggs in the wastewater are trapped in these layers and the parasite egg-free wastewater is discharged into the environment. On the other hand, by using UP FLOW in this type of filters, the force of gravity is also used so that it is used as much as possible in the settling of cloddy places and others. The chemical reaction takes away a lot of sewage odor. Types of sand filters: The sand filter in terms of type and function is: • Resin sand filter • Galvanized sand filter • Vertical sand filter • Horizontal sand filter • Standing sand filter • Aquarium sand filter • Boiler sand filter • Jacuzzi sand filter