The effect of sodium chloride concentration on the job ORTA electrodes. It is found that the electrodes OPTA, especially in the sodium chloride concentration below 50 g/liter, three groups occur conjugate processes, oxidation of chloride ions, the solid-phase oxidation of the anode material, dissolution of the active catalytic coating. The processes of oxidation of chloride ions prevail in current densities of 0.001 - 0.032 A/cm2 at high current densities become essential processes of oxidation of the ruthenium oxide coating. The oxidation of chloride ions, especially at concentrations less than 50 g/liter can be described as occurring in a constantly evolving anode active material due to its corrosion and solid-phase oxidation.

Keywords: ruthenium oxide-titanium anode, sodium hypochlorite, polarization dependence, water disinfection, tafel dependence, oxidation of chloride ions, solid-phase oxidation of the anode material, changes in the activity of the anode material, anion ruthenate, an

The results of experimental studies on the sorption properties of the material ODM - 2F in aluminum, iron and petroleum products

Keywords: Water preparation, filtering material, the sorption isotherm, ODM-2F

In our work we researched the possibility of producing active chlorine out of fresh natural water through it's direct elecrolysis. We discovered how the anode's corrosion resistanse relates to the ruthenium oxide and iridium oxide ratio in the anode's coating. We also researched their properties: chlorine outcom dependance on current, cell voltage, and active chlorine concentration increase dynamics in processed water from Don river.

Keywords: Emergencies, water supply, disinfection, electrolysis of natural water, chlorides, active chlorine, current density, electrode's lifetime