Theoretical Studies and Experimental Results of Tangential Baromembrane Process through Hybrid Flow Implementation on Natural Water

The paper presents theoretical studies on the implementation of hybrid flow in natural water in devices designed to implement baromembrane separation processes. The Reynolds number is used for the theoretical calculation of hydrodynamic characteristics, and the regime parameters of the hybrid flow were determined through theoretical studies. Critical velocity values, laminar and turbulent flow velocity ranges were determined for different values of the pressure cell height. In addition, a comparison of the water flow regime parameters in the pressure cell with the hybrid flow regime parameters showed that under the hybrid regime, the velocity developed when delivering the same flow rate exceeds the water flow velocity, and according to the experimental results, under the hybrid flow conditions the specific permeability significantly exceeds the specific permeability obtained with conventional flow. Thus, the results of experiments conducted on a laboratory device show the advantage of the hybrid mode, which is a prerequisite for the high efficiency of membrane devices and, most importantly, will facilitate the development and creation of domestically produced industrial membrane devices.