The wastewater treatment plant in Zhengzhou Xinqu adopts the “multi-stage mobile bed active coke adsorption of reclaimed water advanced treatment process”, using active coke as an emerging adsorption carrier, using efficient and stable physical adsorption principle to further remove COD, TP, chroma, micro-pollutants and toxic substances in sewage, and the main water quality index reaches the Class III standard of river surface water. Saturated active coke can be activated by regenerating furnace to realize the recycling of resources.