QIANXiao-yong,HUJing,LIDan,et al.Calculation and Characteristics of Greenhouse Gas Emission from Urban Wastewater Treatment Plants in Shanghai[J].China Water & Wastewater,2022,38(21):39-44.
Calculation and Characteristics of Greenhouse Gas Emission from Urban Wastewater Treatment Plants in Shanghai
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第38卷
Number:
第21期
Page:
39-44
Column:
Date of publication:
2022-11-01
- Keywords:
- urban wastewater treatment; greenhouse gas; calculation method; emission characteristics; Shanghai City
- Abstract:
- Based on the statistical data of urban wastewater treatment, the greenhouse gas emission and its emission intensity of urban wastewater treatment plants in Shanghai were calculated, and the influencing factors of greenhouse gas emission intensity were analyzed. The annual total greenhouse gas emission of urban wastewater treatment plants in Shanghai was approximately 1.9 million tons (measured by CO2 equivalent, the same below), and the greenhouse gas emission intensity per unit wastewater treatment was 0.75 kg/m3. The greenhouse gas emission intensity of wastewater treatment plants using oxidation ditch process was 0.71 kg/m3 on average, which was significantly lower than that of other treatment processes (P<0.05). In addition, greenhouse gas emission intensity was significantly positively correlated with unit wastewater treatment power consumption (P<0.01), and positively correlated with COD removal rate (P<0.05). According to the greenhouse gas emission intensity of urban wastewater treatment plants in Shanghai, there is still potential to reduce greenhouse gas emission compared with the international advanced level.
Last Update:
2022-11-01