GUO Tao,WANG Chang-zhi,MEI Rong-wu,et al. Treatment of Membrane Industrial Wastewater by Fe-C Micro-electrolysis Coupled with Aerobic Granular Sludge [J].China Water & Wastewater,2020,36(13):14-19.
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Treatment of Membrane Industrial Wastewater by Fe-C Micro-electrolysis Coupled with Aerobic Granular Sludge

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第36卷 Number: 13 Page: 14-19 Column: Date of publication: 2020-07-01
Author(s):
GUO Tao1; WANG Chang-zhi2; MEI Rong-wu2; JI Yu3; ZHAO Jing-wei3; LI Jun1
(1. College of Environment, Zhejiang University of Technology, Hangzhou 310014, China; 2. Environmental Science Research & Design Institute of Zhejiang Province, Hangzhou 310007, China; 3. Hangzhou Tianchuang Environmental Technology Co. Ltd., Hangzhou 311121, China)
Keywords:
aerobic granular sludge; Fe-C micro-electrolysis; membrane industrial wastewater; coupling synergy
Abstract:
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 mL/g and the average particle size was 316 μm at 120 days. The concentrations of COD, TN and NH4+-N in the effluent were 130.1 mg/L, 23.7 mg/L and 6.6 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.
Last Update: 2020-07-01