Filtration, as a conventional treatment process for water treatment, plays an effective role in reducing water turbidity in drinking water and industrial water treatment. The material used for filtration is called filter material.

When water passes through the filter layer formed of the filter material, impurities and suspended particles contained in the water stream are trapped in the gap of the filter material by the action of the filter layer. As the porosity of the filter material becomes smaller, smaller suspended particles are also captured. At the same time, the flocs remaining on the surface of the filter material contact and adsorb suspended particles in the water to purify the water.

Porcelain sand filter is a kind of filtration material, produced by high-quality kaolin clay, binders, pore-forming agent after burning in high temperature. It is a new type of filtering material with white appearance, is hard, uniform particles, with developed micro-porous, large porosity, and good roundness. It is the upgraded product for traditional waste water treatment media such as quartz sand and anthracite, to meet the various components of the complex industrial wastewater and urban sewage treatment. Porcelain sand filter is widely used in single-layer filter, multi-layer filter, and mechanical filter as filter medium.

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