FIELD: measurement equipment.
SUBSTANCE: group of inventions relates to measurement and control of presence of hydrophobic pollutants. The invention presents a version of a monitoring method of presence of one or more types of hydrophobic pollutants during paper manufacture, which involves the following: a. obtaining a fluid medium sample from the specified paper manufacturing process; b. measurement of turbidity of the specified fluid medium sample; c. selection of a hydrophobic colouring agent capable of interaction with the specified pollutants in the specified fluid medium and fluorescence in the specified fluid medium; d. addition of the specified colouring agent to the specified fluid medium and exposure during the time required for interaction of the specified colouring agent with the specified pollutants in the specified fluid medium; e. measurement of colouring agent fluorescence in the specified fluid medium; and f. setting of correlation between fluorescence of the colouring agent and concentration of the specified pollutants; with that, if turbidity measured at stage (b) is more than 2000 nephelometric turbidity units (NTU), then the specified sample is diluted or separated additionally prior to addition of the specified colouring agent at stage (d) and measurement of fluorescence.
EFFECT: invention presents a measurement method of efficiency of one or more chemical reagents reducing the number of one or more hydrophobic pollutants during paper manufacture Quick, accurate and reliable monitoring is achieved.
20 cl, 3 dwg, 3 ex
