Process and device for recycling washing water in photographic processing

摘要

The invention relates to a process and a device for the treatment of photographic films. The film circulates in a series of processing baths, each of these baths comprising a washing area each comprising one or more tanks, the waste water from all said washing areas is recovered and treated in a single nanofiltration device, common to all said processing baths, the water hardness of the permeate from said nanofiltration device is adjusted, and the permeate is recycled to each of the washing areas of each of the processing baths. Application to the processing of photographic films. <IMAGE>