Due to the constantly increasing pollution of the air the legislature requests a restriction of the sulfur dioxide emissions. This refers for instance to power plants and refuse incineration plants.
At desulfurization of flue gases process-dependent waste waters of different concentrations develop, which are not allowed to be fed into a biological purification plant.
We offer evaporation- and crystallization plants in which different kinds of waste waters, developed in flue gas desulfurization plant, can be treated.
In these plants salts are crystallized and produced partly as products of highly pure quality which may be re-utilized (e.g. sodium sulfate or ammonium sulfate).