铁碳微电解耦合好氧颗粒污泥处理制膜工业废水

针对难降解制膜工业废水,采用铁碳微电解/好氧颗粒污泥耦合工艺进行处理,铁碳微电解为连续流,好氧颗粒污泥为序批式反应器(SBR)。耦合工艺系统成功培育出具有优异沉降性能的好氧颗粒污泥,120 d时SVI30在30 m L/g左右、平均粒径为316μm;出水COD、NH4^+-N和TN浓度分别为130.1、6.6、23.7 mg/L,处理效果优于对照组。铁碳微电解预处理不但能提高废水的B/C值,而且能促进生化处理段颗粒污泥的形成,有利于难降解工业废水的处理。

Treatment of Membrane Industrial Wastewater by Fe-C Micro-electrolysis Coupled with Aerobic Granular Sludge

Refractory membrane industrial wastewater was treated by a coupling treatment process of Fe-C micro-electrolysis/aerobic granular sludge.The Fe-C micro-electrolysis was operated in continuous flow mode,and the aerobic granular sludge was cultivated in a sequencing batch reactor(SBR).Aerobic granular sludge with excellent sedimentation performance was successfully cultivated in the coupling system.The SVI30 was about 30 m L/g and the average particle size was 316μm at 120 days.The concentrations of COD,TN and NH4^+-N in the effluent were 130.1 mg/L,23.7 mg/L and6.6 mg/L respectively,and the treatment efficiency was better than that of the control group.The Fe-C micro-electrolysis pretreatment could not only improve the B/C ratio of sewage,but also promote the formation of granular sludge in the biochemical treatment section,which was beneficial to the treatment of refractory industrial wastewater.