Electro Coagulation and electro-oxidation are two types of electrochemical treatment methods used in packaged treatment plants for wastewater treatment. Both methods involve passing an electric current through the wastewater to destabilize and remove contaminants.
Electro Coagulation involves the use of sacrificial metal electrodes (such as aluminum, iron, or copper) that release metal ions into the wastewater. These ions destabilize the contaminants, causing them to clump together and settle out of the wastewater. The metal hydroxide flocs formed can then be easily removed by filtration or sedimentation. This method is effective in removing suspended solids, organic matter, heavy metals, and some pathogens.
Electro-oxidation, on the other hand, involves the use of non-sacrificial electrodes (such as graphite, platinum, or titanium) that generate reactive oxygen species (ROS) in wastewater. These ROS can break down organic matter and other contaminants in the wastewater into simpler and less harmful compounds. This method is particularly effective in removing organic matter, pathogens, and refractory compounds that are resistant to other treatment methods.
Both Electro Coagulation and electro-oxidation can be integrated into packaged treatment plants to provide efficient and effective treatment of wastewater. These treatment methods offer several advantages over conventional treatment methods, such as lower operating costs, a smaller footprint, and higher treatment efficiency. Additionally, they can be easily automated and require minimal maintenance.