The demands made by industry on the cleaning processes are complex and require system solutions and consideration of the possible individual emission reduction measures.
Waste gas, exhaust gas or flue gas streams can often no longer be cleaned in an ecologically appropriate manner only by means of a single-stage cleaning process.
Operating experience has shown that, with regard to the constituents and their concentration, in the waste gas and usually further upstream and/or downstream stages are to be used as supplements. Also official requirements often lead to the demand for the provision of process combinations as a complete solution. Referred to as combined processes are multistage plants in which for each stage, depending on the volume flow rate and the pollution load, an adapted process is to be used.