SUPERFEROX

Purpose

A filter material intended for the removal of water-dissolved iron and manganese ions as well as for reducing the water turbidity and colour.

Description

The filter media basis is the strong natural material “pink sand” with the catalytic coat of highest manganese oxides on its surface.

Medium action is based on 2 principles: sorption (due to material porosity) and catalytic oxidation. When filtering water, the manganese oxides present in the catalytic film accelerate the process of ferrous iron oxidation to trivalent resulting in corresponding hydroxide (water- insoluble compound). Due to the material structural porosity, ferric hydroxide is formed both on the media grain surface and inside its pores resulting in the increased contaminant capability and acceleration of removal of iron from the water. The ferric hydroxide formed is capable of catalytically oxidising the bivalent manganese, forming practically insoluble hydroxides Мn(ОН)3 and Мn(ОН)4. Upon depletion of the filter capacity, to restore the properties of the filter medium, regeneration is required by the back flow of raw or treated water (water and air mixture would be more efficient). The media is not consumed during operation, and the possibility of caking is reduced to minimum.

Equivalents

The media may be conditionally compared with such popular media as GreenSand, MTM and Birm.

Specifications

• Color from brown to black
• Pour density 1.2 g/cm3
• Granule porosity 52 - 60 %
• Uniformity coefficient 1.4 - 1.6
• Mechanical wear 0,9 %
• Size 0,7 - 1,6 mm
• Package 20 l
• Bed height 0.4 - 1 m (max. 70% of the tank volume)
• Filtering rate 8 - 15 m/h
• Washing rate with 10 – 30% expansion 30 – 56 m/h
• Back washing duration 7 - 20 min

The requirements for raw water

* if pH > 8.5, Fe²⁺ removal is difficult

Recommendations for use

The media is recommended both for pressure and gravity systems as a main or an element of the mixed bed. It is efficient for mixed bed filters with such filter media as ECOFEROX, Birm etc.

This media is universal since it is capable of working under different modes:

• *Non-reagent mode (washing with water backflow without regenerant). For example, as a mixture of AS and MS sorbents.

• Regeneration mode (washing with water backflow + regeneration with potassium permanganate solution). E.g. GreenSand, MTM.

• Dosing mode (continuous dosing of potassium permanganate upstream of discharge filter). E.g. GreenSand, MTM.

Proportions for mixing Ecoferox/Superferox:

Service life of the medium is up to 5 years.

Commissioning and operation

Upon loading the filter, back washing should be performed.

The formula for approximate calculation of the filtration cycle:

V = VSF / (2 * СMn + СFe) * 1000

V - filtration cycle, m3

VSF - the volume of Super Ferox, l

СFe - iron concentration in raw water, mg/l

СMn -manganese concentration in raw water, mg/l

*The formula provides an approximate indication of the actual filtration cycle. The most optimal is the experimental selection of the period between regenerations and washing time, which enables using the water treatment system at minimal consumption of regenerate and washing water.

Washing is required at least once every 7 days.

Package

SuperFerox is packaged in convenient 20 L bags ± 25 kg, 40 bags per pallet.