High Technology Engineered Polymers
Thus the choice of the NOCHAR polymer to be used depends on the nature of the effluent to be immobilized, alone or as a mixture.
Absorption et solidification du liquide
Slow speed mixing
Mass ratios "liquid:polymer" vary depending upon the chemical composition of the waste
• Oil : 1:1 à 3:1
• TBP : 1:1 à 2:1
• Mixed sludge types : 2:1 à 4:1
• Aqueous solutions : 2:1 à 5:1
Minimal volumetric increase in the solidification process: less than 10%
We strongly recommend that each waste stream undergo a bench test, in order to verify the composition of the solution, to determine the best polymer formula for solidification and to determine appropriate and safe solidification ratios, based on liquid : polymer by weight.
Representative Projects since Year 2001
LOR sample n°20 - Composition : 13% (xylene, mesitylene, diphenyloxazol, , TBP, ) and 87% water
LOR sample N°75 - Composition : 9,6% TBP and 91,4% water
The polymers N910 and N960 were used to allow obtaining a solidified final waste
These organic liquids solidified by
NOCHAR products were then cemented and accepted on the ANDRA storage site. They were subject to a specific acceptance procedure.
Other return of experience from ORANO : CEA Saclay Tank MA508, CEA Marcoule Tank 64.30, SICN Veurey
Solidification of 30 m3 tritiated oil - transported to Studsvik, Sweden then to Belgoprocess, Belgium for incineration
During the operation of the Cernavoda NPP, a series of waste streams have been generated for waste treatment purposes. One important waste stream is the combination of solid materials and liquid organic waste, creating flammable solids. Flammable solids represent solid materials, such as cloth, plastic, contaminated with oil containg gamma nuclides and H-3 from maintenance activities.
The use of
NOCHAR is an effective solution for eliminating the liquid in order to allow the final acceptance of solid and liquid waste.