A THREE-PARAMETER METHOD FOR DETERMINING THE PARAMETERS OF THE STATE OF FRUIT JUICE PRODUCTION WASTEWATER

Abstract

As a result of the processing of food raw materials and the production of the final product, both the producer and the consumer have an impact on the environment, which can be negative and sometimes irreparable. Nowadays, small food and processing businesses are often located within urban areas, so it is necessary to check that the effluents discharged comply with the legal requirements. At the same time, the effectiveness of environmental protection measures can be assessed on the basis of the results of environmental monitoring activities and the development of the environmental situation in the settlement areas. Wastewater from fruit juice production contains contaminants of organic origin, as well as dilute solutions containing carbohydrates and proteins of plant origin. Wastewater pollutants can quickly decompose and deteriorate sanitary conditions when they enter artificial and natural water bodies, as well as as a result of their accumulation in the soil. At the same time, the existing informative methods for determining the parameters of the state of wastewater for small fruit juice production enterprises are quite complicated and characterised by high costs. In this regard, there is a need to develop new wide-band methods for joint measurement control of the state parameters of wastewater samples from food and processing industries in order to select a treatment method.

In order to improve the accuracy of specific electrical conductivity χ measurements, relative permittivity εr  and temperature t of wastewater samples, in this work, a three-parameter informative method based on a submersible parametric electromagnetic transducer SPT, which uses a conductive layer of wastewater instead of a core, is investigated. The algorithms for measuring and calculating procedures for determining the parameters of wastewater are developed. The basic relations describing the implementation of the multi-parameter electromagnetic method of measuring control of χ, εr, and t are presented.