How Does Activated Carbon Remove COD From Water

Activated carbon is one of the most effective materials for removing COD (Chemical Oxygen Demand) from water due to its high surface area, porous structure, and strong adsorption capacity. This article explains the fundamentals of COD in wastewater treatment and explores how activated carbon removes organic pollutants through physical adsorption, chemical adsorption, dissolved organic matter removal, and biological synergistic effects. It also compares PAC and GAC, discusses key factors affecting COD removal efficiency, and highlights practical applications in industrial wastewater, municipal sewage, and advanced treatment systems. A complete guide for selecting the right activated carbon and optimizing COD removal performance is also included.