Method of Water Filtration Using Ceramic Composite Materials Based on Bentonite

Abstract

This paper presents a method of water filtration using composite filters based on bentonite powder, alumina ceramic particles and iron metal particles. The base of the composite material was developed from bentonite and alumina ceramic particles. Various percentages of iron metal particles were added to the base matrix of the composite and there were obtained several groups of materials. They were compacted in a metal mould to make cylindrical raw material samples. The samples were sintered at 1100 °C. There were obtained ceramic filters of Φ = 16 mm diameter and 14-16 mm high. In order to meet the purpose of the research, the ceramic filters were characterised in terms of compressive strength and there were determined some dependencies between their structure and properties. A laboratory installation was used to demonstrate the filtration of the solid components from water by means of CWF composite filters. Both parts of the filter were subjected to the action of the pressure generated by the centrifugal pump within the installation, which led to the displacement of the fluid. There was demonstrated the ability to retain the solid components in water by means of these ceramic composite filters.