- Producing drinking water from ground water
- Water treatment for the food industry
Purity versus thirst: The treatment of ground water for drinking water is our core expertise.
And it is exactly to do this that we developed GEH® 20 years ago. In doing so, we fulfil the most stringent requirements in relation to the removal of arsenic. We are the market leader and offer the better quality product. Our customers also benefit from our superior operational performance as they receive the best quality water with which to produce drinks or use in food processing.
Good to know:
All GEH® products are certified in accordance with DIN EN 15029 and the NSF/ANSI Standard 61. This confirms the suitability for drinking water treatment within the EU and the USA, as well as globally.
GEH® for the removal of
|Chemical composition||β-FeOOH and Fe(OH)3|
|Dry solid content||58 % (± 10 %)|
|Iron content, relative to dry solids||600 g/kg (± 10 %)|
|Particle size range||0.2 - 2.0 mm|
|Oversize fraction||< 10 %|
|Total oversize and undersize fraction||< 20 %|
|Bulk density, backwashed||1150 kg/m3 (± 10 %)|
|Specific surface area (BET-method)||approx. 300 m2/g|
Recommended Operating Conditions
|Adsorber bed depth||0.8 - 1.6 m|
|Freeboard height||50 % of bed depth|
|Filtration velocity||≤ 20 m/h|
|Empty bed contact time (EBCT)||≥ 3 minutes|
|Permissible pressure drop||Max. 0.5 bar (7 psi)|
|Backwash velocity||26 m/h (with water only)|
|Duration of backwashing||until outlet water is clear|