Purification of radioactive contaminated water

SGS-polymers are proved to be advantageous for the purification of huge volumes of diluted solutions. Therefore they can successfully be applied for processing of radioactive waste water, i.e., circulating water from nuclear reactors or radioactive contaminated surface water.

The enrichment of elements like cesium, strontium, rare earth, which appear due to the nuclear fission, have been investigated at SGS-polymers.

Sorption of 85-Sr, 134-Cs, 88-Y, 144-Ce, 160-Tb and nuclides 46-Sc and 81-Hf was analyzed. The sorption of Cs, Sr, Ce from different model- and technical waters showed, that the rate of sorption is increasing in order of Cs < Sr < Ce. Cs and Sr are sorbed in correlation with the amount of Ca and Mg. However Ce is sorbed independently from the saturation of the SGS-polymer with Ca and Mg.

Experimental data were received using a 30 ml cartridge (and a 2 ml tablet) and a flow rate of about 30-45 l/h (1000 - 1500 sp.v./hr.), elution with a flow rate of 36 l/h. Extrapolating the results for the use of a 1,8 l technical cartridge, one receives 360 l cleaned solution per cycle with a productivity of some m^3/h. [5]

Break through curves depending on flow rates
Sorbent volume : 2 ml

Break through curves for Cs at polymer SGS-81

1 - 841 spec.vol./h

2 - 1402 spec.vol./h

3 - 2103 spec.vol./h

4 - 3645 spec.vol./h

5 - 4205 spec.vol./h

With the increase of the flow rate, breakthrough capacity is increasing.

- SGS-Polymers

kind@rzaix340.rz.uni-leipzig.de

Last update: 12-01-95 6:21:03 pm