Multimedia filter manufacturer

Multimedia filter manufacturer

Multi media filterprinciple

The top layer of the bed is composed of light and coarse grade materials, while heavy and fine grade materials are placed at the lower part of the bed. The principle is to filter by depth - larger particles in the water are removed at the top layer, while smaller particles are removed deeper in the filter medium. Thus, the water quality can reach the standard after coarse filtration.

The equipment is pressure type, and its principle is that when raw water passes through the filter material from top to bottom, suspended solids in the water are intercepted by the surface of the filter layer due to adsorption and mechanical flow resistance; When water flows into the middle of the filter layer, due to the tighter arrangement of sand particles in the filter material layer, there are more opportunities for particles in the water to collide with the sand particles. As a result, flocs, suspended solids, and sand particles in the water adhere to each other, and impurities in the water are trapped in the filter material layer, resulting in clear water quality. The suspended solids in the filtered effluent can be below 5 milligrams per liter.

Multi media filter

The meaning of filtration is that in the process of water treatment, filtration generally refers to the process of using filter media layers such as quartz sand and anthracite to intercept suspended impurities in water, thereby clarifying the water. The porous material used for filtration is called filter material, which is the filter material of quartz sand. There are various types of filter media, including granular, powdery, and fibrous. Common filter media include quartz sand, anthracite, activated carbon, magnetite, garnet, porous ceramics, plastic balls, etc.

A medium filter that uses two or more media as the filter layer is used in industrial circulating water treatment systems to remove impurities, adsorbed oil, etc. from wastewater, so that the water quality meets the requirements of recycling. The function of filtration is mainly to remove suspended or colloidal impurities in water, especially to effectively remove small particles and bacteria that cannot be removed by precipitation technology. BOD5 and COD also have a certain degree of removal effect. The performance parameters are shown in the table below;

effect

Remove impurities such as mud, sand, suspended solids, colloids, and algae from water to reduce mechanical damage and pollution to reverse osmosis membrane components.

Composition of internal filter layer

The multi-media filter materials in the filter include uniformly sized gravel, quartz sand, magnetite, anthracite and other filter materials. These filter materials are scientifically and orderly distributed in the filter tank according to their specific gravity and particle size. For example, anthracite with small specific gravity and slightly larger particle size is placed in the upper layer of the filter bed, quartz sand with moderate specific gravity and smaller particle size is placed in the middle layer of the filter bed, and gravel with large specific gravity and larger particle size is placed in the lower layer of the filter bed. This ratio ensures that the filter will not produce chaotic layers during backwashing, thereby ensuring the retention capacity of the filter material.

Multimedia filter manufacturer