关于城市污水厂污泥制备生物炭吸附镉探讨

Cadmium Adsorption of Bio- char Prepared by the Sewage from the Urban Sewage Plant

使用城市污水厂剩余污泥制备生物炭并用于吸附重金属离子Cd^(2+),有利于城市污水厂污泥的处置,为污水中重金属的处理与处置和"碳减排"提供新的思路与方法。研究结果表明不同污水厂的污泥的最佳活化温度不同;吸附模型拟和结果表明Freundlich模型在大部分温度下均具有比Langmuir模型有更好的相关性。

This research is to use urban sewage sludge to prepare bio- char and adsorb Cd^（2＋）. It is benefit to the disposal of sewage sludge treatment,and lead to a new way of heavy metals treatment in the wastewater and carbon reduction. Experiments show that different activation temperature of sewage plant sludge and the result of adsorption model fitting is that Freundlich model has a better relevance than Langmuir model.