High density and rigidity plastic polymer coarse bubble disc diffuser is efficient in ensuring that sewage and materials with a high specific gravity concentration are adequately agitated or diffused so that correct mixing could be done. It also ensures that sewage will not be permitted to sink to the bottom of a holding tank when it is added. This product is capable of diffusing tiny air bubbles into the wastewater to help aerobic bacteria break down organic waste. High density and rigidity plastic polymer coarse bubble disc diffuser is basically used as pollution controlling technique for keeping the environment clean.