Activated carbon is primarily used in waste gas treatment for the adsorption and treatment of volatile organic compounds (VOCs), and it is a mature and widely used technology.

Coal based pellet Activated carbon adsorption technology captures pollutants in waste gas through physical or chemical processes. Its core principle is to utilize the large specific surface area and porous structure of activated carbon to effectively adsorb harmful substances such as VOCs, thereby purifying the gas. This technology is widely adopted by many enterprises due to its low investment and simple operation, and is particularly suitable for VOCs treatment in small and medium-sized enterprises.

However, this technology faces challenges in its application due to regulatory issues. Some enterprises have problems with non-standard usage, such as using inferior materials, insufficient filling, or untimely replacement, which seriously affects the treatment effect and increases environmental risks.

To improve treatment efficiency, digital supervision and recycling have become key directions. For example, the "Code-Based Carbon Replacement" intelligent supervision platform implemented in Jinan City uses QR code technology to achieve full-process digital tracking of activated carbon from replacement to waste carbon disposal, effectively solving the problems of easy falsification of paper ledgers and difficulties in supervision, significantly reducing the environmental management costs of enterprises and reducing VOCs emissions.

Meanwhile, promoting the recycling of spent activated carbon allows for the reactivation and reuse of waste materials, not only reducing pollution control costs for enterprises (regenerated activated carbon costs approximately 80% of new carbon), but also reducing hazardous waste generation and carbon emissions, thus promoting resource conservation.