September 2005 – The treatment of waste water from paint shops, foundries, and smith's shops in the automobile industry is still connected with serious difficulties. Most of the existing plants are equipped with membrane technology, which, however, have a short serviceable life due to blocking of the membranes and which cause the high costs for maintenance, repair, and spare part service.
With the compact evaporator EVA, GEA Wiegand offer a new generation of evaporators which are especially suited to avoid these problems. Depending on the selection of the process engineering, the operation of EVA is self-sufficient from the energy aspect, or EVA is operated with external energy. The final product can be generated optionally as high concentrate, salt, or dry substance.
During their visit of the GEA Wiegand laboratory, employees of a famous German automobile manufacturer attended a test and became convinced of the efficiency of the compact evaporator.
The standard design of the compact evaporator is offered for the following capacities:
Flow rates: 100 kg/hr to approx. 20,000 kg/hr
Electrical energy requirement: approx. 40 KW/ m³ (series connection)
Vacuum: from approx. 10 mbar
Materials: depending on the requirements, all commercial stainless steels, standard: 1.4571
Control system: Standard: SIEMENS PLC S7 with operator panel or industrial computer, equipped with remote data transmission