Method for treating waste waters

A combinatory means for waste water treatments comprising:

• an electrocoagulation reactor (EC), comprising at least one first anode, at least one first cathode, an EC vessel for containing the at least one first anode and first cathode, and at least one first power supply, wherein the at least one first power supply comprises a first positive pole connected to the at least one first anode, a first negative pole connected to the at least one first cathode, and at least one first supercapacitor;
• an electrolytic ozone (EO3) generator, comprising at least one second anode having a thin film of tin oxide that is made from a carboxylate compound of tin, at least one second cathode, an EO3 vessel for containing the at least one second anode and second cathode, at least one source of water as precursor of ozone connected to the EO3 vessel, and at least one second power supply, wherein the at least one second power supply comprises a second positive pole connected to the at least one second anode, a second negative pole connected to the at least one second cathode, and at least one second supercapacitor;
• and
• at least one vacuum pump, connecting the EC vessel and the EO3 vessel for transferring ozone gas from the EO3 vessel to the EC vessel.