The flue gas cleaning for the new plant is just as elaborately planned as the technology of the existing waste incineration plant, which has been tried and tested for over twenty years. This means that both the legal and the emission requirements that apply specifically to Kiel, most of which have been halved, can be safely complied with with the new plant. The operation of the waste and sewage sludge recycling plant does not make a measurably relevant contribution to the pollution of the Theodor-Heuss-Ring measuring station.

For flue gas cleaning, an extension will be made to the existing flue gas cleaning building (in the drawing, the front part of the blue-colored part of the building with the yellow pipeline on the roof) and a third chimney will be built.

In the new building extension, phosphorus will also be recovered from the ash of the incinerated sewage sludge. The recovery of phosphorus requires the use of various inputs. For this, additional storage space must be built in a lighter construction (the two flat parts of the building in the front left of the picture).