HUANGQing,YANGPing,YANGZhong-qi,et al.Analysis on the Engineering Effect and Carbon Emission of MBBR and MBR Processes for Treating Sewage[J].China Water & Wastewater,2023,39(16):99-104.
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Analysis on the Engineering Effect and Carbon Emission of MBBR and MBR Processes for Treating Sewage

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第39卷 Number: 第16期 Page: 99-104 Column: Date of publication: 2023-08-17
Author(s):
HUANG　Qing1;  YANG　Ping1;  YANG　Zhong-qi2; 3;  MA Xiao-ran4;  ZHOU　Jia-zhong2; 3;  WU　Di2; 3
（1. Qingdao Capital Ruihai Water Co. Ltd.， Qingdao 266031， China； 2. Qingdao SPRING Water Treatment Co. Ltd.， Qingdao 266510， China； 3. Qingdao Key Laboratory of Green and Low Carbon Biofilm and Water Environment Restoration， Qingdao SPRING Water Treatment Co. Ltd.， Qingdao 266510， China； 4. Beijing General Municipal Engineering Design & Research Institute Co. Ltd.， Beijing 100082， China）
Keywords:
MBBR;  MBR;  membrane fouling;  energy consumption;  carbon emission
Abstract:
The designed treatment capacity of a wastewater treatment plant (WWTP) in north China is 30×104 m3/d, the effluent reaches level quasi-Ⅳ criteria of Environmental Quality Standards for Surface Water (GB 3838-2002). The core processes are upgraded and constructed by sludge-biofilm composite MBBR (S-MBBR) and MBR process. The actual application of the two processes is analyzed from the aspects of process flow, operation effect, chemical agent and energy consumption, maintenance control and low?carbon operation. The results show that the treatment capacities of the two processes are equivalent, both can stably reach the designed effluent standard. S-MBBR has more significant advantages in influent load impact resistance, and the average influent load rate is 119%. The chemical agent and electricity costs of the two processes are 0.469 yuan/m3 and 0.626 yuan/m3, respectively, and the MBR operation cost is higher mainly due to the operation and maintenance of the membrane tank. The low carbon operation evaluation grades of the two processes are level Ⅱ and level Ⅲ respectively. Electricity consumption is the main carbon emission contributor, accounting for about 55%. S-MBBR needs reliable design and equipment support with higher requirements for process manufacturers, while MBR process has higher operation cost with less footprint. Pure MBBR is expected to reach the same level of footprint as MBR, and further reduce operating cost and carbon emission, but it is more technically difficult.
Last Update: 2023-08-17