Master thesis deals with overview of the current water status of quality in Slovenia and methodology for planning the membrane ultrafiltration systems. Generally, the filtration process should strive towards greater efficiency and lesser consumption of chemicals during the filtration process. As the input water the surface water in the Dolenjska area is taken into a consideration. The membrane ultrafiltration system for the preparation of technological water, which contains all the key elements for quality preparation and control of the operation is designed. Treated membrane process is assessed concerning costs.
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