Polycrystal slice reclaimed water recycling method

The invention discloses a polycrystal slice reclaimed water recycling method. The polycrystal slice reclaimed water recycling method comprises the steps that reclaimed water produced by polycrystal slices is centralized to a transfer pool; multiple communicated reclaimed water pools are utilized to conduct free settling on silicon powder and silicon carbide powder in the water; at preset temperature, the reclaimed water is subjected to filter pressing, and produced clear water is delivered to a water storage device; polyethylene glycol is extracted from the reclaimed water, plate-and-frame filter pressing, decoloration, ion exchange and distillation are conducted to form a finished product polyethylene glycol for polycrystal slices. By the adoption of the polycrystal slice reclaimed water recycling method, the reclaimed water can be purified, multiple times of recycling can be achieved, the polyethylene glycol in the reclaimed water is purified, water resources are saved, and resource utilization maximization