Many medium filter design principle

Keywords: medium filter more

keyword description: more medium filter design principle

more medium filter design of the principle of filter is to use one or several of filter medium, under certain pressure of high turbidity water by a certain thickness of granular or the grain materials, effectively to remove suspended impurities make water clear process, commonly used with quartz sand, anthracite coal, manganese ore, etc. , mainly used for water treatment in addition to the turbidity, soften water, pure water level before the pretreatment, such as water turbidity can be up to 3 degrees. The meaning of the filter, in the process of water treatment, filtration generally refers to quartz sand, anthracite filter material layer intercept suspended impurities in water, making water clarification process. Used for filtering of porous material is called, quartz sand filter material is the most common. Filter material with granular, powder and a variety of fibrous. Commonly used with quartz sand, anthracite coal, activated carbon, magnetite, garnet, ceramic and plastic balls, etc. Many media filter ( Filter bed) , using two or more of the media as a filter, filter medium in the industrial circulating water treatment system, to remove impurities in sewage, adsorption oil etc, make water quality meets the requirement of recycling. Filtering effect, mainly is to remove the suspended or colloidal impurities in the water, especially can effectively remove the precipitation technology cannot remove tiny particles and bacteria, such as BODs and COD also have some degree of removal effect. Performance parameters are shown in the following table: filter medium filter more mainly consists of the filter body, form a complete set of piping and valves. The filter body mainly includes the following components: simplified; Cloth water component; Support components; Backwashing trachea; Filter material; The exhaust valve ( The outer) And so on. The selection of the filter material on the basis of ( 1) Must have enough mechanical strength, in order to avoid in the process of reverse wash quickly wear and breakage; ( 2) Better chemical stability; ( 3) Does not contain harmful to human body health and toxic substances, does not contain harmful to the production, affect the production of material; ( 4) The selection of the filter material, should try to use high adsorption ability, great capacity of sewage, water rate, good water quality filter material. In the filter material, pebble is mainly supporting role, in the process of filtering process, because of its high strength, spacing between crack stability, large pore, facilitate is washing process, filter water after pass; Similarly, backwashing process, backwashing water and backwashing can smoothly through the air, etc. Conventional configuration, the pebble is divided into four kinds of specifications, the bedding way for bottom-up big before they are small. Filter material particle size and the relationship between the loading height of filter bed height and the ratio of the average particle size of filter material is 800 ~ 1 000 ( Design specification) 。 The size of the particle size of filter material and filtration precision. For the parts shown in the table below for the function and structure of the form. Much more medium filter used on water treatment filter medium, common are: anthracite - Quartz sand - Magnetite filter, activated carbon - Quartz sand - Magnetite filter, activated carbon - Quartz sand filter, quartz sand - Ceramic filters, etc. More medium filter filter design, the main consideration is: 1, the different filter material with large density difference, after backwashing disturbance mixed layer phenomenon will not occur. 2, choose filter material according to water production purposes. 3, particle size requirements lower filter material particle size, particle size is smaller than the upper filter materials are in place to ensure that the lower the effectiveness of the filter material and make full use of. In fact, in the three layers of filter bed, for example, the upper filter material particle size, the largest density of small light filter material, such as anthracite coal, activated carbon; Center middle centered filter material particle size, density, and is commonly quartz sand; The lower filter material by the particle size of the minimum density of the biggest heavy of filter material, such as magnetite. Because of the limitation of density difference of three layer medium filter is basically fixed filter material selection. Upper function coarse filter filter material, the lower filter material have fine filtration effect, thus give full play to the multiple medium filter bed, water quality is much better than that of monolayer filter material filter bed. For the drinking water, generally it is prohibited to use anthracite, resin filter material, etc. Guangzhou filter source water filter equipment co. , LTD. Is China's first development and production of water filter various types of products are: PP wire wound filter, PP folded filter, PP melt-blown filter, activated carbon filter, resin filter, big flow filter, and provide the matching equipment professional factories, was also the first three development line around the filter, and participate in the formulation of the chemical wire wound type filter core ( Water filter) One of the industry standard drafting unit. Sincerely look forward to cooperation with you!