LI Yi-shuo,LIANG Yuan,YAN Ying-ying,et al.Design of Treatment Process of Biogas Slurry from Anaerobic Co-digestion of Kitchen Waste/Municipal Sludge/Urban Excrement[J].China Water & Wastewater,2021,37(14 14):56-62.
Design of Treatment Process of Biogas Slurry from Anaerobic Co-digestion of Kitchen Waste/Municipal Sludge/Urban Excrement
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第37卷
Number:
14 14
Page:
56-62
Column:
Date of publication:
2021-07-17
- Keywords:
- kitchen waste; municipal sludge; urban excrement; anaerobic co-digestion; MBR; NF; mesophilic catalytic oxidation
- Abstract:
- Based on analyzing characteristics of biogas slurry water quality from anaerobic co-digestion of kitchen waste, municipal sludge and urban excrement in an organic ecological treatment station in Beijing, a biological and physicochemical combination process was employed, which consisted of pretreatment, external membrane bioreactor (MBR, two-stage nitrification/denitrification and ultrafiltration) and partial nanofiltration (NF). Concentrate produced by the nanofiltration was treated by mesophilic catalytic oxidation process, and the effluent quality could finally reach the discharge standard. The designed treatment capacity of this project was 700 m3/d. The operational results indicated that the process was stable and had a good performance. The comprehensive effluent quality reached the third level limitations of Integrated Wastewater Discharge Standard (GB 8978-1996), among which ammonia nitrogen and total nitrogen met the limitations of the Beijing local standard Integrated Discharge Standard of Water Pollutants (DB 11/307-2013).
Last Update:
2021-07-19