The Nuclide Removal System (NURES™) is based on use of 100% inorganic, highly selective ion exchange materials CsTreat®, SrTreat® and CoTreat®.
More detailed information about the ion exchange materials hereinunder:
| |
CsTreat® |
CoTreat® |
SrTreat® |
| Removes |
Caesium (Cs-134, Cs-137) |
Radioactive Cobalt |
Strontium |
| Can also be used for |
|
corrosion products (e.g. Mn-54, Fe-59, Ni-63, Zn-65), transuraniums (e.g. Pu-236) |
Pu, Zn |
| Not disturbing conditions |
High salt concentrations |
| Most disturbing factors |
Potassium, Sodium |
pH, colloids, Calsium |
Calcium, Magnesium |
| Based on |
ferrocyanide |
Titanium Oxide |
Titanium Oxide |
| Inorganic |
Yes |
Yes |
Yes |
| Stable |
Yes |
Yes |
Yes |
| Formate |
Solide granules |
Solide granules |
Solide granules |
| Bulk density |
0.6 kg/l |
0.8 kg/l |
0.8 kg/l |
| Grain size typically |
0.25 - 0.85 mm |
| other size options |
< 0.15 mm or 0.15 - 0.25 mm |
| Decontamination factor* typically |
1000 - 5000 |
500 - 2000 |
200 - 2 000 |
| Capacity typically (BV**) |
60 000 - 240 000 |
120 000 - 400 000 |
20 000 - 40 000 |
| Capacity typically (l/kg) |
100 000 - 400 000 |
150 000 - 500 000 |
25 000 - 50 000 |
| Operating pH area |
1-13 |
4-8 (optimal 5-7) |
>7 (optimal >10) |
| Max. operating temperature (°C) |
80 °C |
300 °C |
300 °C |
| Suitable for both column or bed operations |
Yes |
Yes |
Yes |
| Service flow rate typically (BV/h) |
10-20 |
10-20 |
10-20 |
*Decontamination factor is the ratio of removed nuclides compared to escaped nuclides.
**BV= bed volumes, the volume of liquid possible to treat in relation to the volume of the ion exchange bed
CsTreat, CoTreat and SrTreat are registered trademarks of Fortum Corporation.
5/10/2011
Send link to a friend
X