The project was completed in? Years? In August, wangdu was the first environmental protection project invested and constructed by utilizing sewage treatment equipment technology. The project is to purchase a set of reclaimed water recycling equipment with a volume of 30t/d. The original water quality COD 400 mg/L, BOD 200 mg/L, effluent water quality up to the "urban sewage treatment plant pollutant discharge standards" gb18918-2002 A set of the highest allowable pollutant discharge standards, and the dissolved oxygen, COD, nh4-n, fecal coliform group number and other indicators are in line with the gb-2002 "surface water environmental quality standards" in the surface IV water related indicators.