Theoretical formulae to calculate various concentrations of continuous adverse current cleaning with interrupted water supplement and continuous adverse current cleaning with interval trough dumping were deduced so as...Theoretical formulae to calculate various concentrations of continuous adverse current cleaning with interrupted water supplement and continuous adverse current cleaning with interval trough dumping were deduced so as to promote the application of adverse current cleaning process of electroplated wares.The approximate formula in design criterion GBJ 136-90 for management of electroplating wastewater was reviewed.The differences between all actual concentrations and theoretical concentrations were studied in combination with some examples.Some new suggestions had been given about the correction factor.Various modified cleaning methods were summarized.It was suggested that the cleaning method based on circulative stirring of pumps and self-spraying baptism combined with spray rinsing should be preferentially adopted.It was also suggested that attention should be paid to completely remove residual fluid during the process of trough dumping for adverse current cleaning with interval water replacement.展开更多
文摘Theoretical formulae to calculate various concentrations of continuous adverse current cleaning with interrupted water supplement and continuous adverse current cleaning with interval trough dumping were deduced so as to promote the application of adverse current cleaning process of electroplated wares.The approximate formula in design criterion GBJ 136-90 for management of electroplating wastewater was reviewed.The differences between all actual concentrations and theoretical concentrations were studied in combination with some examples.Some new suggestions had been given about the correction factor.Various modified cleaning methods were summarized.It was suggested that the cleaning method based on circulative stirring of pumps and self-spraying baptism combined with spray rinsing should be preferentially adopted.It was also suggested that attention should be paid to completely remove residual fluid during the process of trough dumping for adverse current cleaning with interval water replacement.
