Application of Pressure-Driven Membrane Processes in Treatment of Swimming Pool Water System

Abstract

The paper presents usefulness of membrane processes (ultrafiltration (UF) and nanofiltration (NF)) for treatment of backwashing water of pool water system. The backwashings were taken from circulations located in two indoor facilities from pools of various functionalities. Moreover, the used samples had different quality in terms of physical and chemical parameters. The test used various membranes, both in respect of the polymer that they were made of and their separation capacity. Transport and separation properties of ultrafiltration (MW and V5) and nanofiltration (DK and HL) membranes were specified. Furthermore, backwashing water samples before and after membrane process treatment were subjected to Microtox ® toxicity test. The conducted processes helped to reduce turbidity and specific absorbance at UV 254nm 1m , both during ultrafiltration as well as nanofiltration. Much higher hydraulic performance was observed in ultrafiltration membranes. After each filtration cycle a Microtox ® toxicity test was carried out which revealed reduced washings toxicity in relation to bacteria in all tested samples.