The pig farm spiral stacking machine, also known as the wastewater recycling machine, reuses wastewater. The process involves collecting the manure water after it passes through the solid-liquid separator in the pig farm into a pool, then pumping it into the spiral stacking machine via a water pump. Through mixing and flocculation, it enters the concentration stage, followed by the dehydration stage, where the manure is squeezed out. The treated water is slightly yellow, odorless, and suitable for water-flushed manure systems, manure scrapers, etc. It is used in small, medium, and large-scale pig farms, typically in combination with solid-liquid separators. It occupies a small area, offers high efficiency, is made entirely of stainless steel, and provides excellent cost-effectiveness.