The main factors to consider in the design of the filter layer of the multi-media filter are:
1, different filter materials have a large density difference, to ensure that there will be no mixed layer phenomenon after backwashing disturbance.
2, select filter material according to the use of water production.
3, the particle size requires that the lower filter material particle size is less than the upper filter material particle size to ensure the effectiveness and full use of the lower filter material.
In fact, taking the three-layer filter bed as an example, the upper filter material has a large particle size and is composed of lightweight filter material with small density, such as anthracite and activated carbon; Medium filter medium particle size, density, generally composed of quartz sand;Multi media filter water treatmaent for sale The lower filter material is composed of heavy filter material with small particle size and high density, such as magnetite. Due to the limitation of the density difference, the filter material selection of the three-layer media filter is basically fixed. The upper filter material plays a coarse filter role, and the lower filter material plays a fine filter role, so that the role of the multi-media filter bed is fully played, and the effluent water quality is obviously better than the filter bed of the single filter material.
For drinking water, it is generally prohibited to use anthracite, resin and other filter materials.
Sewage treatment equipment: effective treatment of domestic sewage and industrial wastewater, to avoid sewage and pollutants directly into the water, to improve the ecological water environment is crucial.
At present,Environmental protection chemical equipment China's environmental protection equipment has formed a certain scale and system in the three major fields of air pollution prevention and control equipment, water pollution treatment equipment and solid waste treatment equipment. 2017-2020 China's environmental protection equipment market size from 343.81 billion yuan to 378.94 billion yuan, the average annual compound growth rate. China Business Industry Research Institute predicts that China's environmental protection equipment market will reach 414.66 billion yuan in 2023.
Sewage treatment equipment: effective treatment of domestic sewage and industrial wastewater, to avoid sewage and pollutants directly into the water, to improve the ecological water environment is crucial.
At present,Environmental protection chemical equipment China's environmental protection equipment has formed a certain scale and system in the three major fields of air pollution prevention and control equipment, water pollution treatment equipment and solid waste treatment equipment. 2017-2020 China's environmental protection equipment market size from 343.81 billion yuan to 378.94 billion yuan, the average annual compound growth rate. China Business Industry Research Institute predicts that China's environmental protection equipment market will reach 414.66 billion yuan in 2023.
Sewage treatment equipment: effective treatment of domestic sewage and industrial wastewater, to avoid sewage and pollutants directly into the water, to improve the ecological water environment is crucial.
At present,Environmental protection chemical equipment China's environmental protection equipment has formed a certain scale and system in the three major fields of air pollution prevention and control equipment, water pollution treatment equipment and solid waste treatment equipment. 2017-2020 China's environmental protection equipment market size from 343.81 billion yuan to 378.94 billion yuan, the average annual compound growth rate. China Business Industry Research Institute predicts that China's environmental protection equipment market will reach 414.66 billion yuan in 2023.
