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Groundwater iron manganese filter technology

by:Lvyuan      2021-01-21
Groundwater treatment is mainly to remove iron and manganese ions in the water, water fe mn ions content is exorbitant, meet air water immediately become yellow and brown yellow, we usually use manganese sand filter to remove the water of iron and manganese ions. So in addition to iron manganese pay attention to what? Here introduce to you, hope to help you.
1, the action principle of manganese sand filter
manganese sand filter don't big backwashing, often because of manganese sand iron removal and filtration, one is to rely on mechanical adsorption, 2 it is more important on the surface of membrane filtration. Surface membrane filtration is to point to in manganese sand water form a thin film on the surface of the upper layer, such as damage, in addition to iron and filtering effect will be poor. So generally don't use air backwashing, so long as the pressure difference will not affect the output. When the large pressure difference in due time, easy wash, it is not necessary to make air backwashing, because it destroyed the membrane, to set up to time. Security thorough backwashing suggest quarter once is enough. In addition, before the filter excess aeration has a certain influence, but is not the main, the main problem you or excessive backwashing, destroyed the packing layer configuration structure, destroyed the membrane formation.
2, manganese sand filter of manganese sand choose
manganese sand filter materials are using high quality domestic, grain density, mechanical strength, strong chemical activity, not easily broken, insoluble in water, natural manganese ores. After the water washing grinding in removing impurity, drying, such as magnetic separation, screening, dust removal technology into sand. Then processed manganese sand according to certain gradation blending. It has the ideal water treatment filter, grading scale, making it in unit volume, specific surface area of the largest, the most powerful section carrying capacity, the catalytic oxidation of the largest and the smallest backwash turnover. Manganese sand filter material appearance rough brown or light gray, often used for domestic and drinking water of iron and manganese removal filter, filtering effect is very good. ( Note: MnO2 35% or higher is in addition to iron, and manganese removal, MnO2 30% or less) Can only be used for groundwater in addition to iron) Manganese sand filter material is mainly used for reducing the total iron, ferromanganese and manganese in the water content, according to China's domestic and drinking water hygiene standard gauge its iron content is 0 or less. 3 ㎎ / L, manganese content is 0 or less. 1 ㎎ / L, long drink water containing high iron manganese content will seriously affect health.
3, the appearance of the manganese sand filter good manganese sand
manganese sand, widely used in various water supply industry is filtered water using a special filter material, in addition to iron best performance, appearance of auburn. By mechanical processing, screening, the product more edges, close to the ball, manganese sand used in groundwater iron and manganese removal filter.

4, manganese sand filter design parameters, filtration speed: 1-6 8 m3 / h
2, working temperature: room temperature stress at work
3, backwashing compressed air quantity: 18 25 l / m2。 S
4, filter material height: 1000 - 1200 mm
5, backwashing strength: 12 - 15 l / m2。 年代; Back flush time: 4 - 6 minutes
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