Filters with grained charge

Intended for removing from water suspended particles of size 20–40 μm (sand, silt, rust, etc.) by deposition in the filtering bed and discharge of the accumulated contaminations into the drainage in the course of back washing.
 
Suitable filtering materials are quartz sand, combination of quartz sand and anthracite, or Filter AG medium (dehydrated silica). Filter AG has a developed surface of grains and low (compared to quartz sand) bulk weight, which ensures high filtration quality. Its efficient back washing can be performed at a lower flow velocity.

The filtering material is a combination of dehydrated silica (Filter AG) with the Pyrolox mineral based on manganese dioxide in 2 : 1 ratio.

This mixed charge allows efficient removal from water of mechanical impurities, dissolved iron in an amount of 2–3 mg/l, and also hydrogen sulfide. Because of high density of Pyrolox, these filters require large flows for back washing.

Intended for removing from water dissolved organic impurities, free chlorine and its derivatives, foreign taste, odor, and color.
 
The filtering material is activated charcoal prepared from coconut shells. As compared to, e.g., birch charcoal, it exhibits high wear resistance and high sorption capacity. Regeneration of the filtering medium involves no chemicals—just wash with a back flow of water.

 Intended for removing from water dissolved organic impurities, free chlorine and its derivatives, foreign taste, odor, and color.
 
The filtering material is activated charcoal prepared from coconut shells. As compared to, e.g., birch charcoal, it exhibits high wear resistance and high sorption capacity.

Regeneration of the filtering medium involves no chemicals—just wash with a back flow of water.

Filters of the BF series are intended for removing from water iron and manganese at their initial total concentration of up to 3 mg/l.

The filters are charged with Birm material acting as catalyst of iron oxidation with oxygen dissolved in water.

The filtering material is a combination of Birm and Pyrolox mineral based on manganese dioxide in 2 : 1 ratio.

This mixed charge allows efficient removal from water of dissolved iron and manganese at their initial total concentration of up to 5 mg/l. Because of high density of Pyrolox, these filters require high flows for back washing.

Filters of the GS series are intended for removing from water iron, manganese (total initial concentration of up to 15 mg/l), and hydrogen sulfide (H2S, initial concentration up to 5 mg/l) at pH of water 6.2–8.5.

The filters are charged with Manganese Green Sand material, which is crushed glauconite (zeolite group mineral) coated with a manganese dioxide film. Instead of Manganese Green Sand, its analog MTM, in which a manganese dioxide film is applied onto a synthetic support, can be used.