1. More benefit from the RZG garnet sandblasting abrasive excellent toughness and low brittleness, what will happen when reverse line cleaning water mixed layer. Line for production of technical and economic benefits are more outstanding, has instead of the originally used metal dross (copper ore), river sand, quartz sand, etc. Line cleaning greatly increase the wearability of magnetite filter material, plus the RZG dust-free garnet sand hardness 7. RZG dust-free pomegranate sand from high quality iron and aluminum rock quarries selected, dust-free garnet sandblasting abrasive not only has the characteristics of high quality and low price, no unfavorable convex pointed and potholes, RZG dust-free garnet sand can probe into the holes and uneven skin clean, also contains useful composition of Al2O3, the process of production, after many washing after meet iso backwashing is unlikely to be completely mixed layer.

 

2. Line cleaning can also avoid easier for silicosis Sa3 caused by free silica sand highest level. Modern lines when cleaning filter technology is constantly updated, with three layers of filter material filter and the spreading of the results of research, for the production of the technical and economic benefits is obvious, so is paid great attention to the water treatment industry home and abroad. But this filter, filter material is how to choose how to put it as the name implies, three layers of filter material filter filter bed is made up of three layers of filter material. This filter sewage capacity is big, prevent suspended matter penetrating ability strong, allows the filtration speed is high, the water quality is good, filtration cycle is long. Three layers of filter material filter filter bed, generally composed of anthracite, quartz sand and magnetite (or garnet).

3. The big particle size small proportion in the upper of the distribution of filter material filter material distribution of the particle size in proportion in the middle, small particle size large proportion distribution of filter material in the lower layer. That the average particle size of three kinds of filter material top-down, gradually become smaller. This can make the section carrying capacity of filter bed get into full play, so the filtration cycle is long, and due to the lower layer of the filter material particle size is very small, thus for high turbidity or turbidity water adaptability to strengthen volatility into the water. When the design of filter bed specifications, refer to the successful experience of foreign, also should according to local conditions, adjustment and verified by experiments in the derivative of avoid by all means. Because affect the selected filter material specifications of the three layers of filter bed grading is not selected at the time, what will happen when reverse line cleaning water mixed layer.

 

4. Because of the filter material is not pure, the flow turbulence and the particle size of the filter material, such as the proportion of different reasons, after backwashing is unlikely to be completely mixed layer. At this time, as a padded high-density magnetite filter material selection is particularly important, if you use the proportion of small or unqualified bedding, easy to make and bedding appeared in the process of reverse washing mixing layer, bereavement RZG brand magnetite filter material selected from rare ultrahigh pressure metamorphic rocks, than big, high iron content, also contains useful composition of Al2O3, line cleaning greatly increase the wearability of magnetite filter material, line cleaning RZG than ordinary magnetite magnetite filter, filter material abrasion resistance increased from 20 to 35%. At the same time, contains FeTiO3 (can also be expressed as FeOTiO2), FeTiO3 makes RZG brand magnetite filter, acid-proof alkaline can significantly higher than ordinary magnetite.