ELECTROCHEMICAL EQUIPMENT FOR TREATING A LIQUID, THE EQUIPMENT CONTAINING ELECTRODES WHICH APPLY AN ELECTRIC FIELD AND/OR SUPPLY AN ELECTRIC CURRENT TO THE LIQUID AND/OR TO COMPONENTS OF THE EQUIPMENT ADJACENT TO THE LIQUID, NAMELY, SEPARATORS FOR SEPARATING SOLIDS FROM LIQUIDS WITH A MEMBRANE, NON-MEDICAL DIALYZERS, ION EXCHANGE EQUIPMENT; ELECTROLYTIC OXIDIZERS, ELECTROLYTIC REDUCERS AND ELECTROLYTIC PLATERS FOR DEPOSITING AND REMOVING PARTICLES AND/OR COATINGS FROM SUBSTRATES