. This study is an analysis of the impact of service quality, online advertising and innovations in education on the satisfaction of consumers of paid educational services in the Penza region. This study is based on sociological quantitative research conducted in the form of a survey. The number of participants in the survey was 250 people. The results of the study show that the quality of service and innovation in education has the greatest impact on the brand image of educational institutions, while online advertising does not significantly affect the brand image of educational institutions. In addition, it has been found that the quality of service, innovation in education and brand image have a significant impact on customer satisfaction in educational institutions, which online advertising does not.

During this study, information was collected and analyzed in the perspective of producing an electroosmotic installation, in other words, a converter of colloidal polydisperse systems into capillary-porous by electroosmotic dehydration in order to reduce the residual moisture of sludge from sewage and the pulp and paper industry. Exponents were taken as models expressing the mass of the pulp in function of the drying time and the value of electric current. According to the coefficients of determination, the models were consistent with the initial experimental data. Exponential models were used to further optimize the process of converting colloidal polydisperse systems into capillary -porous.

No abstract

No abstract

The paper describes the design of an electroosmotic device for treating dehydration of water-mineral-organic wastewater sludge from paper production and a methodology for conducting experimental studies. As for regression equations for the reduction factor of the waste mass, specific indicators were presented: drainage fluid consumption, current strength, power consumption, and energy, depending on the voltage on the electrodes and the duration of treatment. Besides, the required waste treatment function depends on the voltage and the required waste concentration. Equations and graphs were presented. In terms of the intensity of fluid excretion, it was found that the most effective treatment is performed during the first 0.5–0.7 h. At a voltage of about 25 V, the processing time of waste (until the mass of waste is reduced to 1/3) is about 0.75 h, and at a voltage of less than 10 V, it is about 3–5 h. With a decrease in the voltage, the liquid withdrawal slows down faster. By the magnitude of the current, the separation process lasts for the first 0.7–1.0 h. By the nature of the change in the current, the process is homogeneous (differing only in intensity) at a voltage of more than 8 V. At a lower voltage, the intensity of waste separation by current strength and an increase in the duration of processing decreases sharply. The power consumption is actively growing in the first 1–2 h of processing, gradually slowing down. Then we found the proportionality of power to the applied voltage. The increase in power was associated with a decrease in the distance between the electrodes. With a decrease in the mass of waste less than 50% of the initial value, energy is less efficiently used for separating waste, and the observed increase in energy consumption during further processing sharply increases energy consumption. To reduce the final mass of waste and obtain their concentrate, it was necessary to increase energy consumption. Waste processing should be stopped when 1/3 of the initial waste mass remains due to the actual cessation of the separation of waste fractions with an active increase in energy consumption.