In response to the characteristics of high pectin content,elevated coloration,and high organic matter concentration in wastewater from nut-based food processing,a certain engi-neering project was designed to utilize a combination of aeration regulation,dissolved air flotation,iron-carbon electrocoagulation,coagulation,two-stage aeration/oxidation,membrane bioreactor,and coagulation sedimentation processes.This study presents the process flow,key design parame-ters,and treatment outcomes of this combined technology.The influent wastewater had concentra-tions of COD,TN,and TP at 3 468,59.13,and 13.23 mg/L,respectively.After treatment with the combined process,removal rates of COD,TN,and TP reached 99.45％,93.40％,and 99.70％,respectively,surpassing the discharge standards for the second period of the first-grade e-missions as specified in the Guangdong provincial water pollution emission standards(DB 44/26-2001).
维普
万方数据
