| abstract |
The invention relates to a process for cleaning a waste water stream or the like, comprising:n a desulphurization step, in the form of addition of a desulphurizing agent, and addition of a buffer; followed by a biodenitrification step carried out by micro-organisms which feed on the buffer remaining in the waste-water stream of the desulphurization step; wherein sulphur contamination and the like is removed in the desulphurization step and wherein nitrate contamination and the like as well as the buffer, are removed in the bio-denitrification step. |