The utility model discloses a
solid-liquid separation device for
environmental engineering, which belongs to the technical field of
solid-liquid separation and comprises an object placing plate, a filtering square box is fixedly connected to the top side of the object placing plate, a first
pressure sensor is fixedly mounted in the middle of the inner wall of the top end of the filtering square box, and a second
pressure sensor is fixedly mounted in the middle of the inner wall of the bottom end of the filtering square box. A water pump fixing frame is fixedly connected to the outer wall of one side of the filtering square box, a first water pump is clamped and fixed to the end, away from the filtering square box, of the water pump fixing frame, a water inlet
pipe is fixedly communicated with the side, away from the filtering square box, of the first water pump, an L-shaped
water pipe is fixedly communicated with the bottom side of the first water pump, and a U-shaped
pipe is fixedly communicated with the end, away from the first water pump, of the L-shaped
water pipe; according to the filter plate back flushing device, back flushing operation can be effectively carried out on a filter plate which is easy to block, the upstream and downstream
pressure difference of a
filter system and the replacement frequency of the filter plate are reduced, the maintenance cost of a filter device is reduced, and the filter plate back flushing device has certain practicability.