Process and equipment for regenerating aqueous washing-out solutions of water-developable photosensitive recording materials

    公开(公告)号:DE3143106A1

    公开(公告)日:1983-05-11

    申请号:DE3143106

    申请日:1981-10-30

    Applicant: BASF AG

    Abstract: In a process and device for the regeneration of aqueous washing-out solutions and water-developable photosensitive recording materials, the washing-out solution (2) loaded with washed-out material is continuously purified by ultrafiltration, the filtrate (7) is recycled as washing-out solution to the developing machine (1) for re-use and the concentrate (8) with the washed-out material is added to the washing-out solution (2). The following arrangement can be used for carrying out the process: The overflow branch of the developing machine (1) is connected via an interposed tank (3), a pump (4) and a prefilter (5) to the ultrafiltration unit (6), while the filtrate outlet branch is connected to the developing machine (1) and the concentrate outlet branch is connected to the tank. This process ensures that the environment is not polluted by spent washing-out solution.

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