Engineering Example of Fenton+Hydrolysis Acidification+Secondary A/O+MBR Treatment of Membrane Production Wastewater
The CODcr contained in membrane production wastewater is mainly dimethylformamide(DMF)and dimethylacetamide(DMAC),which are refractory to biodegradation,and the CODcr of wastewater is 13 000 mg/L,and the TN concentration is 1 200 mg/L.In view of the characteristics of high CODcr,high TN and difficult biodegradation of membrane production wastewater of an enterprise,the pretreatment process of Fenton oxidation+hydrolysis acidification was adopted,and the main treatment process was composed of secondary A/O combined with MBR.According to the project example,the membrane production wastewater is treated by fenton oxidation+hydrolysis acidification+secondary A/O combined with MBR membrane,and the actual operation results show that the total removal efficiency of CODcr and TN is 99.6％and 98.9％respectively,and the drainage index meets the national standard GB 18918-2002 Pollutant Discharge Standards for Urban Sewage Treatment Plants first-class A discharge standard.
membrane production wastewaterdifficult biodegradationDMFDMAC
NETL
NSTL
万方数据
