The invention discloses a
sludge dewatering container and a
dewatering method by adopting the container. The
sludge dewatering container comprises an insulating container body, wherein the insulatingcontainer body comprises container side walls, a bottom, a top, and
electrode materials respectively arranged at the bottom and the top, the
anode material is arranged at the top, and the
cathode material is arranged at the bottom; an alkali adding device is further arranged on the insulating container body, wherein the alkali adding device comprises a detection unit used for detecting electric
conductivity of
sludge and a liquid outlet for supplying a liquid to the
electrode material at the top, the supplied liquid of the liquid outlet is controlled by the detection unit, and every time whenthe electric
conductivity of the sludge is reduced by a preset value A, the liquid outlet is opened for liquid supply. The alkali adding device is introduced, and the electric
conductivity of the sludge is detected through the detection unit; after electroosmosis is carried out for a period of time, the electric conductivity of the sludge is reduced, and then, a bit of an alkaline solution is added to the
electrode material at the top for ensuring the electric conductivity of the sludge and the dewatering effect of electroosmosis.