d_removal_comp_so

CODE DESCRIPTION FROM_YEAR TO_YEAR
1.00 No removal 1984  
2.00 Removal of organic carbon 1984  
2.10 Hydrogen peroxide 1984  
2.20 Pre-ignition at 850°C 1984  
3.00 Removal of soluble salts and gypsum 1984  
3.10 Washing with water 1984  
4.00 Removal of carbonates 1984  
4.10 Hydrochloric acid 1984  
4.20 Hydrochloric acid/Calcium chloride 1984  
5.00 Removal of OC and carbonates 1984  
6.00 Removal of OC, carbonates, soluble salts and gypsum 1984