FIELD: machine building.
SUBSTANCE: procedure for reagent metering consists in measuring consumption of liquid, in determination of liquid volume, in calculation of dose of reagent W by volume of liquid, and in turning on pump-metering device for specified time. Additionally, there is specified time for determination of volume of liquid. When volume of liquid is determined for this time, then there is measured pressure in a pipeline P. Time of pump-metering device switching on is calculated by formula T=W/S(P), where S(P) is efficiency of the pump-metering device at pressure P in the pipeline.
EFFECT: reduced consumption of reagent due to increased accuracy of metering dose, elimination of maximum allowed concentrations of reagent in processed liquid.
3 dwg
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