PERVAPORATION CLEANING OF STICH WATER VIEW OF ORGANIC HOUSES

Abstract

The paper examines the process of purifying industrial waste water from organic impurities, in particular, the
process of pervaporation of organic solvents in polymer membranes.
Summarizing everything explained in this work, we can say that pervaporation processes occupy a special place
among membrane processes. This is determined by their efficiency, energy saving, the ability to carry out fine separation of
mixtures to obtain high-quality products, as well as their undeniable environmental safety.
The process of pervaporation consists in the penetration of organic impurities contained in wastewater into the body
of a semipermeable polymer membrane and filling of microvoids (caverns) and, thanks to the process of molecular diffusion,
originating through the body of the membrane with subsequent evaporation from its surface.
The kinetics of wastewater treatment with volley emissions on membrane devices by the pervaporation method were
experimentally investigated. Instructions are provided on how to avoid the phenomena of equilibrium concentration and
concentration polarization during pervaporation cleaning. Technological schemes of membrane installations for carrying out
the pervaporation process are considered. As a result of the experimental studies, appropriate graphical dependencies were
constructed and an equation was obtained that allows you to calculate the working surface of the membrane elements in the
device under the condition of achieving the minimum calculated concentration of organic impurities in the wastewater.
Wastewater treatment using membrane devices with a small mass exchange surface is proposed, which will allow deeper
wastewater treatment. A two-stage membrane wastewater treatment plant is proposed, which can be used for deeper treatment.
Thus, in applied and fundamental aspects, it is necessary to study the mechanism of molecular thermodiffusion through the
wall of a polymer semipermeable membrane, as this stage is the limiting step in pervaporation processes.