Control technique for a process of multistage washing of using a plurality of chemicals

摘要

A method for optimizing a process of multistage washing of using a plurality of chemicalproducts, the method comprising the following steps for at least one chemical: - conveying (508) a chemical (111A to 111D) through a channel feeding (120) from unenvase (110A to 110D) chemical to a washing object (100) and from the washing object using a return channel (130) to the chemical container; - monitoring (516), during transport of the chemical, a first set of parameters in elcanal supply (120) and monitor (518) a second set of parameters in the return channel (130), wherein each set of parameters includes at least one parameter indicating direct oindirectamente purity chemical; - determining (520) mutual uniformity first and second set of parameters monitored; and - determine a time of action of the chemical on the basis of mutual and elsegundo uniformity first set of parameters.