Filtration is one of the main processes that we use in water purification technology. When the water passes through the filter media, the suspended particles are separated. They can remain on the surface of the filter layer or inside it, in the spaces between the grains. Various processes can occur during filtration - physical, biological, and chemical.Filtration processes Physical processes during filtration can be divided into three types. The first is the filtration of the suspension, i.e. particles exceeding the pore diameters between the grains are trapped in the air of the layer. Unstoppable particles undergo another process – sedimentation. Particles that are not affected by this process move into the layer with the flow of water and, due to the electrostatic interaction, remain on the surface of the grains, so diffusion occurs. Microorganisms entering the filter layer cause biological processes: removal of iron, removal of manganese, nitrification and denitrification. The microorganisms feed on the ingredients contained in the purified water, thereby contributing to the removal of pollutants.
The filter layer has a catalytic effect and also generates iron removal and manganese removal processes. As the sediment settles on the grains, the ability to retain the suspension on the surface of the filter material increases, hence the term catalytic effect. Iron and clay hydroxides combine into large agglomerates and, together with hydroxide molecules, trap water-borne pollutants.
Filter materials - characteristics
Filtration in wells is nothing more than the flow of water through a series of tiny channels connecting two communicating vessels. If it were not for the physical, biological, and chemical processes discussed, the filter would only trap particles larger than the pore diameter. Natural sediments and artificial aggregates are used to filter water in wells. One of the best solutions is filter gravel, which is characterized by high grain uniformity. A good filter gravel should also be highly resistant to abrasion and other mechanical damage, so it can be used for a long time. Gravel and filter gravel are used in various sewage treatment plants, for road and drainage drainage, for the construction of wells. The main parameters determining the properties of the material are the diameter of the grains and their shape. In the filter layer, the density and porosity of the filler used are important. Before buying filter gravel, it is worth learning about these properties from the manufacturer, because natural aggregates are usually very heterogeneous. They are sifted to obtain the required fraction. https://vd-tv.ru/content/stavki-ks-go-kak-uvelichit-svoi-shansy-na-pobedu
The filter layer has a catalytic effect and also generates iron removal and manganese removal processes. As the sediment settles on the grains, the ability to retain the suspension on the surface of the filter material increases, hence the term catalytic effect. Iron and clay hydroxides combine into large agglomerates and, together with hydroxide molecules, trap water-borne pollutants.
Filter materials - characteristics
Filtration in wells is nothing more than the flow of water through a series of tiny channels connecting two communicating vessels. If it were not for the physical, biological, and chemical processes discussed, the filter would only trap particles larger than the pore diameter. Natural sediments and artificial aggregates are used to filter water in wells. One of the best solutions is filter gravel, which is characterized by high grain uniformity. A good filter gravel should also be highly resistant to abrasion and other mechanical damage, so it can be used for a long time. Gravel and filter gravel are used in various sewage treatment plants, for road and drainage drainage, for the construction of wells. The main parameters determining the properties of the material are the diameter of the grains and their shape. In the filter layer, the density and porosity of the filler used are important. Before buying filter gravel, it is worth learning about these properties from the manufacturer, because natural aggregates are usually very heterogeneous. They are sifted to obtain the required fraction. https://vd-tv.ru/content/stavki-ks-go-kak-uvelichit-svoi-shansy-na-pobedu