·Wastewater treatment equipment is used for treating domestic wastewater.

·Small-scale domestic wastewater treatment applications utilize anaerobic fermentation technology at normal temperature, establishing a new system of primary anaerobic fermentation followed by secondary aerobic digestion and filtration, based on the principle of "multi-stage self-flow, sequential degradation." The system consists of anaerobic fermentation, aerobic digestion and filtration, wastewater recycling, and media.