Electromagnetic-force-based dewatering for sewage sludge reduction

A system comprising:

• a front-end auxiliary filter plate;
• a back-end auxiliary filter plate;
• a plurality of filter plate modules disposed between the front-end auxiliary filter plate and the back-end auxiliary filter plate, wherein each of the filter plate modules includes a middle main filter plate, a middle auxiliary filter plate, and a plurality of electromagnetic modules comprising an electromagnetic coil wound around an electromagnetic core, the middle main filter plate and the middle auxiliary filter plate are disposed at opposite sides of the electromagnetic modules, the middle main filter plates of the plurality of filter plate modules face the front-end auxiliary filter plate and the middle auxiliary filter plate of the plurality of filter plate modules face the back-end auxiliary filter plate and there is a consistent one-to-one match between the main filter plates and the auxiliary filter plates that form a plurality of filter chambers, wherein the outer side of the front-end auxiliary filter plate and the inner side of the back-end auxiliary filter plate are each provided with the plurality of electromagnetic modules;
• a high-pressure pump that pumps sewage sludge into the filter chambers via sludge inlet pipes;
• a plurality of microwave generators and microwave acting channels embedded in the plurality of filter plate modules, wherein the plurality of microwave generators send microwaves through the microwave acting channels to irradiate the sludge;
• and
• wherein an electric current is applied to the electromagnetic coil, attracting the middle auxiliary filter plates and the main filter plates and applying pressure to the sewage sludge;
• and
• a high-pressure sludge inlet pump that pumps high-pressure gas through air inlets and through holes on the main filter plates and auxiliary filter plates via intake branch pipes to blow away sludge cakes.