Apparatus useful for water treatment comprises membrane and cathode, operated as cross-flow filtration, where membrane is formed as anode forming electric field with cathode arranged at distance, after applying direct or alternating voltage

Apparatus for water treatment, comprises a membrane (12) and a cathode (18), operated as a cross-flow filtration, where the membrane is formed as an anode which forms an electric field with the cathode arranged at a distance, after applying direct voltage or an alternating voltage. An independent claim is also included for the apparatus for water treatment, comprising a filter surface and a cathode, operated as a dead-end filtration, where the filter surface is formed as an anode which forms an electric field with the cathode, arranged at a distance, after applying direct voltage or alternating voltage.