Many natural microorganisms are able to transform complex organic molecules into the less complex substances carbon dioxide and water. These organisms are carefully selected multiplied and used for biologic cleaning.
Like in normal aqueous cleaning oils and grease are removed from the metal surfaces by surfactants and emulsifiers and distributed in the cleaning bath. This emulsion is then led to a separate bioreactor, in which the micro organisms provide a continuous treatment of the bath. A semi-permeable membrane is fitted into the pipe which leads back into the cleaning bath in order to keep the micro organisms in that separate reactor.
This type of cleaning can be applied where so far a normal aqueous cleaning was applied. The higher investment costs are compensated in the long run by lower disposal and waste treatment costs.
For related laws and regulations see under ‘Aqueous agents’ >>
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