Reusing system for recycled water

The utility model discloses a reusing system for recycled water. Sewage enters a sedimentation tank on the lower end portion of a sand filter through water distribution well A, a water distribution well B and a valve II. Filtered water enters a reusing water tank through an opened valve V after penetrating through a filter plate, a bearing layer and a quartz sand layer. Recycled water is further treated by an aeration device of the reusing water tank to be used. When the sand filter needs backwashing, the valve II is closed, and a valve I is opened to discharge sludge naturally. After the sludge is discharged, the valve I is closed, a valve III and a valve IV are opened, and a backwashing water pump is started. Backwashing water in the reusing water tank enters the sand filter through the valve III to stir the sand filter layer at high pressure, and residual suspended matters are driven by the backwashing water to be discharged by the valve IV. Recycled water treated by the reusing system is cleaner and can b