The 250m3/day BioDopp plant was in 2016. Influent COD and NH3-N, 1200~2500 mg/L and 450~800 mg/L respectively is pumped from a black geomembrane methane pond after anaerobic digestion. The effluent COD 50-80 mg/L and NH3-N 0-5 mg/L is reached with a 11kW inverter blower and electricity consumption to treat one tonne wastewater is just around 1.5kWh.