Abstract
We have carried out a comparative verification of functional characteristics of polysulfone membranes with the rated molecular-mass maximum 50 kamu in ultrafiltration treatment of underground water containing iron with various preconditioning. It has been shown that in studied conditions the treatment process proceeds against the background of reducing the membrane capacity due to the formation of a deposit of iron hydroxide in the pores and on the surface. It has been established that intensity of decreasing the capacity of membranes and the degree of recovering their initial capacity depend on water preconditioning, which acts as a factor determining these processes. Based on the research results we proposed hypotheses of the mechanisms of sedimentation for studied conditions of ultrafiltration treatment of underground water containing iron.
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