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EVERZIT - Model Dol -Semi-Calcined Dolomite Filter Media
Semi-calcined dolomite filter media in accordance with EN 1017. EVERZIT® Dol is a filter media manufactured from natural dolomite (CaCO3 ⋅ MgCO3). It is primarily used for groundwater deacidification. Semi-calcined dolomite is formed by thermal decomposition which is precisely controlled to convert only the dolomite`s magnesium carbonate component to magnesium oxide. The resultant filter media is significantly more reactive than e.g. pure calcium carbonate or even non-calcined natural dolomite.
- Homogenous porous grains with rough-textured surface
- Natural mineral refined by purely thermal treatment
- High reactivity
- Easy to handle
- Problem-free transition when EVERZIT® Dol replaces similar media used in existing filter systems
EVERZIT® Dol is used in single-layer filters or dual media filters for removal of dissolved aggressive carbon dioxide. Neutralization takes place up to attainment of calcium carbonate/carbonic acid equilibrium. Besides neutralization the process also realizes increased water hardness.
Additional beneficial effects of filtration with EVERZIT® Dol include:
- Removal of suspended particulates
- Iron and manganese removal
- Increased water hardness due to mineralization with MgCO3 und CaCO3
- Drinking water treatment
- Process water treatment
- 25 kg PE bags
- 1000 kg big bags
- Bulk transport in silo trucks
- CaCO3: approx. 68 %
- MgO: approx. 25 %
- CaO: approx. 1.0 %
- MgCO3: approx. 5.6 %
- Specific density: approx. 3.3 g/cm³
- Bulk density: approx. 1100 kg/m³
- pH value: approx. 11
0) 0.5 - 1.2 mm
I) 0.5 - 2.5 mm
II) 2.0 - 4.5 mm
Other grain-size ranges can be supplied in accordance with your specific requiremants.
EVERZIT® Dol complies fully with the following standards and regulations:
- EN 1017
- German Drinking Water Ordinance 2001
- DVGW work sheet W 213