摘要
针对某果仁食品废水果胶含量大、色度高、有机物浓度高等特点,设计采用曝气调节-气浮-铁碳微电解-混凝-两级AO-MBR—混凝沉淀组合工艺进行处理,介绍了该组合工艺的流程、主要设计参数及处理效果.进水COD、TN、TP的浓度分别为3 468、59.13、13.23 mg/L.废水经过该组合工艺处理后,COD、TN、TP的去除率可达到99.45％、93.40％、99.70％,出水水质优于《广东省水污染排放限值》(DB 44/26-2001)第二时段一级排放标准.
Abstract
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
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