| 摘要 |
PURPOSE:To prevent the occurrence of trouble such as the clogging of a drainpipe or inferior heat conduction due to the formation of slime in the presence of microorganisms by charging a halogen-contg. chemical agent so adjusted as to be dissolved little by little into a waste photographic developer. CONSTITUTION:Compounds such as Cl2 or other element, NaClO or other salt, trichloroisocyanuric acid, dibromodimethylhydantoin and dichlorodimethylhydantoin each generating HClO, HBrO or HIO in water are supplied separately or combinedly to a waste photographic developer so as to be dissolved little by little. For example, bleaching powder with higher solubility is dropped in the form of a thick soln., and dichlorodimethyl- or dibromodimethylhydantoin with lower solubility is held in a container in the form of tablets and directly placed in piping or put into a preliminary tank. Thus, the waste developer is prevented from causing trouble due to slime in the presence of microorganisms. |
