Evaporation

Evaporation is a wastewater treatment process used to separate non-vapour-volatile substances from the water. The water is vaporised by heating and then condensed again. What remains is a concentrate with the non-volatile components of the wastewater. Compared to other treatment processes, evaporators require large amounts of energy in the form of electricity or superheated steam to heat the wastewater. Depending on the type of wastewater, different types of evaporators are used, such as normal pressure and vacuum evaporators with vapour recompression, heat pump evaporators and designs with natural circulation or forced circulation of the medium to be evaporated.