Method for refinery wastewater treatment, a system and uses thereof

A method for treating wastewater from a refinery, the method comprising:

• passing the wastewater through a hybrid electrode stack, wherein the hybrid electrode stack comprises:
• a first part comprising a plurality of hybrid working electrodes, wherein the plurality of hybrid working electrodes comprises high conductive metal electrodes;
• a second part comprising a plurality of hybrid counter electrodes arranged in an alternate sequence and connected in a parallel circuit with the plurality of hybrid working electrodes of the first part to form a stack;
• a non-conductive spacer positioned between the first part and the second part to avoid short circuit between the plurality of hybrid working electrodes, and the plurality of hybrid counter electrodes, wherein the first part and second part are mounted on the non-conductive spacer either vertically or horizontally;
• wherein the high conductive metal electrodes are coated, filled, or mixed with a sacrificial metal along with biocompatible coagulants;
• wherein the sacrificial metal is aluminum (Al), or iron (Fe);
• and the biocompatible coagulants are selected from the group consisting of tannic acid, galacturonic acid, sorbitol, and chitosan, wherein the high conductive metal electrodes coated, filled or mixed with Al are aluminum electrodes, and wherein the high conductive metal electrodes coated, filled or mixed with Fe are iron electrodes.