Sewage Treatment

Sewage, or household wastewater, contains a mix of chemicals and wastes from everyday activities like washing dishes, doing laundry, and using the toilet. This untreated sewage can contain various harmful substances such as nutrients, heavy metals, pharmaceuticals, and oils, posing risks to both people and the environment. Therefore, it’s crucial to treat sewage before releasing it into water sources, onto land, or for reuse.

Electrolytic processes, unlike traditional methods, are highly effective for treating sewage. They clarify sewage, disinfect it, and remove phosphates, all while reducing costs and the time needed for processing.

In an electrolytic cell, when an external current is applied, organic compounds in sewage undergo oxidation at the anode (positive electrode) and reduction at the cathode (negative electrode). The anode breaks down organics directly on its surface, creating reactive oxidant species like free radicals and superoxides that further oxidize the organic compounds.

For water treatment, electrodes made of titanium coated with ruthenium oxide are widely used. These electrodes, especially effective during the final chlorination stage, excel at producing chlorine and are great for reducing color and removing chemical oxygen demand (COD) from sewage.

Electro oxidation Process for Sewage Treatment