Gas Stripping (Desorption) Column - Water Degassing
We offer both the processes described below:
- Hot degassing (hot column)
- Cold degassing (cold column)
Attainable residual oxygen in the degassed water with both processes: < 0.02mg(ppm) O2/litre or < 20µg(ppb) O2/litre
The value for the residual oxygen is dependent on the oxygen content and the temperature of the raw water. The cooling of the water should therefore always take place after the water degassing. The column diameter and the column height are determined on the basis of the water temperature, oxygen content in the raw water, the desired throughput rate and the permitted residual oxygen.
Hot degassing - "hot column" |
---|
Gas requirement: approx. 0.10 kg/hl water, approx. 5% of this is lost (via the roof, rest remains in the water)
Size: | Throughput: | Steam requirement*: |
Type 32 | max. 6 m³/h (60 hl/h) | 76 kg/h |
Type 50 | max. 12 m³/h (120 hl/h) | 151 kg/h |
Type 65 | max. 23 m³/h (230 hl/h) | 288 kg/h |
Type 80 | max. 35 m³/h (350 hl/h) | 439 kg/h |
Type 100 | max. 55 m³/h (550 hl/h) | 689 kg/h |
Type 125 | max. 86 m³/h (860 hl/h) | 1078 kg/h |
*=saturated steam, insulated column, water inlet temperature 15°C, heating temperature 72°C
Additional equipment:
- Insulation of the column
- Downstream carbonation (in addition to pre-carbonation through the degassing process)
- Cooling
Cold degassing - "cold column" |
---|
Downstream UV sterilisation must be integrated if there are problems with the hygiene of the raw water. If severe problems with water hygiene are anticipated, then preference should be given to pasteurisation ("hot column", see above).
Gas requirement: approx. 0.22 kg/hl water, amount lost: approx. 5% (rest remains in the water)
Sizes: | ||
Type 15 | max. 1.2 m³/h (12 hl/h) | 0.02 ppm |
Type 25 | max. 3 m³/h (30 hl/h) | 0.02 ppm |
Type 32 | max. 4.5 m³/h (45 hl/h) | 0.05 ppm |
Type 50 | max. 12 m³/h (120 hl/h) | 0.05 ppm (optional 0.02 ppm) |
Type 65 | max. 23 m³/h (230 hl/h) | 0.05 ppm (optional 0.02 ppm) |
Type 80 | max. 35 m³/h (350 hl/h) | 0.05 ppm (optional 0.02 ppm) |
Type 100 | max. 55 m³/h (550 hl/h) | 0.05 ppm (optional 0.02 ppm) |
Type 125 | max. 86 m³/h (860 hl/h) | 0.05 ppm |
Additional equipment:
- Downstream carbonation
- Cooling
- UV sterilisation