TREATMENT OF WASTE PROCESSING SOLUTION OF PHOTOSENSITIVE MATERIAL AND DEVELOPING TREATMENT METHOD

摘要

PURPOSE: To sufficiently separate a waste processing solution into a solid component and a liquid by treating the silicic acid containing waste processing solution of a photosensitive material using at least one component selected from casein, albumin and soybean protein. ;CONSTITUTION: In the treatment of the waste developing solution containing silicic acid generated by the developing processing of a photosensitive material in an automatic developing machine, a casein tank 2, an activated carbon tank 3, a hydrogen peroxide tank 4 and a neutralizing agent tank 5 are provided. The contents of the respective tanks 2-5 are injected in a flocculation tank 1 and the waste processing solution is flocculated under stirring by a stirrer 6. At this time, the operation of a pump 14a is controlled according to the measured result of a pH meter 7 to adjust the addition amount of a neutralizing agent. The waste solution issued from the flocculation tank 1 is supplied to a centrifugal filter 8 to separate a filtrate which is, in turn, returned to the circulating water tank of the automatic developing machine through a storage tank 10 and a filter 12.;COPYRIGHT: (C)1993,JPO&Japio