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Waterbased cleaning of mixing vessels PrefaceThis report describes possibilities for using water-based cleaning in the lacquer and paint industry. The water-based cleaning is an alternative to the traditional cleaning with solvents causing problems in the working environment as well as VOC emissions to the surrounding environment. VOC regulation according to the Danish legislation and EC directives will be summarized by way of introduction. This regulation will update the interest for using water-based cleaning where it is technically and financially possible. The possibilities are being illustrated by means of laboratory tests and full-scale tests. Moreover, experiences from suppliers of cleaning plants concerning establishment and operation of the plant as well as experiences with possible alternative cleaning agents are described. Examples of financial comparison of alternatives are included in the report. Previous studies made by Teknos Technology A/S in 1997 will form the basis of the project. The description of the cleaning agents and test methods in this report will inspire companies within the lacquer and paint industry to establish their own basis for decisions. The project has been carried out by financial support from the Council concerning recycling and less polluting technology, with the Danish Paintmakers’ Association as project manager. Fichtner × Carl Bro a|s has been the consultant of the Danish Paintmakers’ Association regarding the implementation of the project. Employees from Fichtner GmbH & Co. KS in Germany and Carl Bro a|s in Denmark have participated as consultants on the project. The project has been followed by a group of experts with participation of:
Further employees from Teknos Technology A/S have supplemented on relevant sub-fields. Two suppliers of cleaning technology, Renzmann in Germany and Riobeer in Switzerland have kindly participated in laboratory tests. Further, the company Renzmann has placed equipment at our disposal for a number of test in full-scale. Akzo Nobel Coatings GmbH in Berlin has placed an established plant with water-based cleaning (sodium hydroxide) at our disposal for inspection and has kindly informed about operation experiences. Besides, a responsible steering committee has been appointed consisting of:
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