A leakage test plant for all new cars. In this plant the vehicles are first of all dewaxed with isoparaffin and then cleaned with water in a highpressure area. In the three followingspraying areas the vehicles are sprayed with water and then manually checkedregarding leakage, and afterwards they are subjected to a textile washing againand are polish dried. The task forSterling-Berkefeld was to treat the water in the single sections in such a waythat it can be re-used.
OtherSolutions:
In the high pressure cleaning area onlya band filter with disposable filter fabric was possible due to the waxescontained. For the other areas therewere several alternatives. We hadexperience with backwashable mesh filters which, however, had to bedismantled and manually cleaned every two weeks. Sand filters would also be possible but theywould lead to a considerably larger foot print and higher costs.
Reasonsfor Choosing AZUD
The AZUD system provided an optimalsolution. The advantages were: filterfineness down to 10 µ, excellent backwash features, low maintenance, smallspace requirement and low backwash quantities. This filtration system was higher in price than conventional backwashfilters, but considerably lower than sand filters.