On possibility of controlling the flow rate and state of wastewater using nuclear magnetic flowmeter-relaxometer

Abstract

Currently, one of the urgent tasks in environmental monitoring is monitoring the wastewater state. Wastewater is generated in any technological production, as well as in agriculture as a by-product of production. These wastewaters must be cleaned of hazardous elements before being discharged. Moreover, their condition control is necessary even if the water cycle is closed, i.e. there is reuse after treatment. It should be noted that such wastewater can contain pollution and other production waste which can cause damage to the measuring equipment. In this case, non-contact devices are preferable for wastewater control. The method of nuclear magnetic resonance is one of the promising solutions to this problem. The developed device allows measuring water flow at a flow rate in the range from 0.001 to 1.0 liters per second. In this range, relaxation constants are measured to determine the presence of both dissolved and undissolved impurities, as well as hazardous substances in water. Measurements can be made in the temperature range from 276 to 320 K. All measurements are carried out without contact with the investigated medium. Our work presents the results of such measurements.