Preparation of Activated Sludge Biochar and Its Treatment of Copper-Containing Wastewater

With the acceleration of social development, the amount of sludge is also increasing. The resource utilization of sludge is paid attention to. After the chemical activation method, sludge is prepared into sludge activated carbon, and infrared spectroscopy analysis, specific surface area and aperture distribution, and scanning electron microscopic characterization are used to study the adsorption performance of activated carbon on copper in industrial wastewater. And the removal rate of Cu(II) in industrial wastewater is 99.26%. At this time, the adsorption process of Cu(II) by activated sludge biochar conforms to the Langmuir model and the quasi-second-level kinetic model, which belongs to the spontaneous endothermic process of chemical adsorption.