Estimation and analysis of greenhouse gas emissions from wastewater treatment in China
Journal Title: Energy Environmental Protection - Year 2023, Vol 37, Issue 4
Abstract
Although the greenhouse gas emissions caused by wastewater treatment are increasingly concerned, there is still a lack of research on the greenhouse gas (GHG) emissions, regional distribution, important influencing factors and carbon emission reduction of wastewater treatment in China in recent years. Based on the methods of Guidelines for the Preparation of Provincial Greenhouse Gas Inventories (for Trial Implementation) and IPCC 2006 Guidelines for National Greenhouse Gas Inventories in 2006, the study estimates the greenhouse gas emissions from wastewater treatment in 31 provinces across the China from 2016 to 2020, the greenhouse gas emissions from different wastewater treatment processes, and the contribution of different greenhouse gas emissions. The reasons for the changes in annual emissions and the huge differences in different provinces are discussed in depth. The study showed that the total GHG emissions from wastewater treatment in China from 2016 to 2020 were 140, 137, 133, 137 and 143 million tons of carbon dioxide equivalent, respectively, exhibiting a downward trend and then increasing trend, which may be caused by the change of GHG emissions from industrial wastewater. The GHG emissions from wastewater treatment are uneven among different provinces in China, with the highest in Guangdong and the lowest in Xizang. Industrial wastewater treatment had the largest contribution to GHG emissions. Correlation and Contribution analysis showed that the production of processed paper, chemicals and non-staple food, which were prone to discharge large amounts of high-COD wastewater, might have an important impact on GHG emissions from wastewater treatment. Among all GHG emissions, CH4 has the highest carbon emission (65.6%). Therefore, future efforts should focus on the abatement of CH_4 in industrial wastewater treatment processes and the development of CH_4 recycling technologies. In this paper, the GHG emissions from wastewater treatment process in our country are analyzed deeply, which provides new ideas for the wastewater treatemnt industry to achieve carbon emission reduction.
Authors and Affiliations
NIU Zifan|College of Environmental and Resource Science, Zhejiang University, China, LAI Chunyu|College of Environmental and Resource Science, Zhejiang University, China, ZHAO Heping*|College of Environmental and Resource Science, Zhejiang University, China
Keywords
Related Articles
- EP ID EP737988
- DOI 10.20078/j.eep.20230506
- Views 7
- Downloads 0
Progress in electrocatalytic denitrification using element-doped materials
Electrocatalytic denitrification is one of the promising technologies for the treatment of nitrate wastewater. This review comprehensively summarizes the recent advances in electrocatalytic denitrification. Two reaction...
Research progress in the preparation of high value added chemicals by directional pyrolysis of biomass
The production of petroleum-based chemical products, which are used in various daily and industrial goods such as cosmetics, lubricants, plastic products, and synthetic fibers, has led to a heavy dependence on petroleum...
Research progress on catalytic oxidation technologies of gaseouselemental mercury in flue gases
Mercury catalytic oxidation technologies in recent studies are summarized in this study to highlight the present research development and future perspective of catalysts. The mercury oxidation catalysts are classified in...
Applications of photoelectrochemical sensors for the detection of emerging contaminants
In recent years,various emerging contaminants have caused serious threats to the ecological environment,organisms, and human health due to their potential toxicity, which have attracted more and more attention by researc...
Surface cleavage and electron donation mechanism of emerging contaminants excited by H_2O_2 assisted Cu-based catalyst
Toxic emerging contaminants (ECs) and non-toxic dissolved organic matter (DOM) are present in the source water. The key to purification of source water is to realize low cost and efficient priority removal of toxic emerg...