Sludge-based porous ceramic sponge, preparation thereof and application of sludge-based porous ceramic sponge in electrically promoted phosphorus removal

The invention discloses a sludge-based porous ceramic sponge and preparation and application thereof in electrically promoted phosphorus removal, residual sludge and water glass are modified, water is added to prepare slurry, polyurethane sponge is used as an organic template, redundant slurry is impregnated and extruded, and the porous ceramic sponge is obtained after roasting; the prepared sludge-based porous ceramic sponge is directly used for adsorption and recovery of phosphate, and can also be coupled with an electrochemical system to complete a phosphorus removal process. The method is of great significance in resource utilization of the excess sludge, phosphate recovery and realization of treatment of waste with waste. 本申请公开一种污泥基多孔陶瓷海绵及其制备和在电促除磷中的应用，改性剩余污泥和水玻璃，加水制成浆料后，以聚氨酯海绵为有机模板，浸渍并挤出多余浆料，经焙烧后得到多孔陶瓷海绵；将制备的污泥基多孔陶瓷海绵直接用于磷酸盐的吸附和回收，也可与电化学系统耦合，完成磷的去除过程。本申请对解决剩余污泥的资源化利用、磷酸盐回收以及实现以废治废具有重要意义。