Duerr Gmbh

Satpal Bhatnagar

Wolfgang Tobisch

Juergen Weschke

Joachim Lorenzen

Hans-Ulrich Frey

Ralf Gonser

To provide a recovery plant for surplus water paint in paint-spraying booths comprising a circuit of water circulating in the booth, wherein such problems with sedimenting water paint particles no longer arise, it is proposed that a volume flow of water circulating in the booth flow from the circuit of water circulating in the booth through a branch pipe to a preconcentration stage, that the preconcentration stage comprise a ring circuit with an ultrafiltration unit for continuously producing a preconcentrate in the ring circuit and a permeate which leaves the ring circuit, that the permeate flow into the circuit of water circulating in the booth and the preconcentrate into a final concentration stage, that the final concentration stage comprise a ring circuit with an ultrafiltration unit which increases the concentration of the preconcentrate in batches to the final concentrate and produces a permeate which flows into the circuit of water circulating in the booth.

Recovery plant for surplus water paint

In order to improve an apparatus for removing wax particles from circulating water from spray booths, comprising a system tank, to which the circulating water coming from the spray booth can be fed via an inlet, such that an efficient removal of wax particles from the circulating water is possible, it is suggested that a separation zone be provided in the system tank following the inlet, the wax particles floating up into a layer near the surface in this separation zone, and that an intake of a suction means for a floating phase comprising the layer near the surface be arranged in the system tank on a side of the separation zone opposite to the inlet.

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Vaihingen, Germany

Satpal Bhatnagar