ZHANG Li-cheng,YU Tian-yu,ZHANG Shuang,et al.Startup and Operation of Denitrifying Phosphorus Removal and Electrogenesis Device with Multicathode Chamber Treating Domestic Sewage[J].China Water & Wastewater,2020,36(15 15):52-58.
Startup and Operation of Denitrifying Phosphorus Removal and Electrogenesis Device with Multicathode Chamber Treating Domestic Sewage
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第36卷
Number:
15 15
Page:
52-58
Column:
Date of publication:
2020-08-01
- Keywords:
- denitrifying phosphorus removal and electrogenesis; multicathode chamber; microbial fuel cell
- Abstract:
- In a multicathode denitrifying phosphorus removal and electrogenesis device treating simulated domestic sewage, principle of microbial fuel cell was introduced into the double sludge denitrifying phosphorus removal process, the anaerobic tank was served as anode of the microbial fuel cell, and the aerobic tank, secondary sedimentation tank, anoxic tank and final sedimentation tank were used as the cathode of the microbial fuel cell. After 60 days of debugging and operation of the multi-cathode chamber denitrifying phosphorus removal and electrogenesis device, average removal rates of COD, NH+4-N and PO3-4-P were 69.88%, 62.31% and 57.13%, respectively, and the maximum removal rates were 80.44%, 74.16% and 64.86%, respectively. The average voltages and currents generated by four groups of microbial fuel cells (anaerobic and aerobic tanks, anaerobic and secondary sedimentation tanks, anaerobic and anoxic tanks, anaerobic and final sedimentation tanks) were 0.44 V, 0.40 V, 0.09 V, 0.10 V and 0.49 mA, 0.45 mA, 0.10 mA, 0.11 mA, respectively, and the highest voltages were 0.55 V, 0.51 V, 0.13 V, 0.12 V, respectively. The multicathode chamber denitrifying phosphorus removal and electrogenesis device not only improved the removal efficiencies of COD, NH+4-N and PO3-4-P of domestic sewage, but also enhanced the electricity production performance.
Last Update:
2020-08-01