Litao Village, located by the Seven Stars and Moon Lake Park, once discharged untreated wastewater directly into the lake, causing water eutrophication. BHT Environ collects the village’s wastewater and treats it with the integrated BioComb equipment with a capacity of 50m3/d. The effluent after treatment meets GB18918-2002 Pollutant Discharge Standard of Municipal Wastewater Treatment Plants.