Title :
Impact of different factors on greenhouse gas generation by wastewater treatment plants in China
Author :
Xie, Tao ; Wang, Chengwen
Author_Institution :
Sch. of Environ., Tsinghua Univ., Beijing, China
Abstract :
Wastewater treatment plants (WWTPs) emit greenhouse gas (GHG), which may lead to climate change and global warming effect. During recent years, the increase of the number of WWTPs in China has made the study of the GHG emissions from WWTPs extremely important. This paper presents a complete estimation procedure of GHG generation by considering direct GHG emissions, indirect emissions from energy consumption and some other optional emissions. Based on the system, the overall GHG emissions of nearly 2000 WWTPs in China in 2009 were simulated and analyzed. Generally, the result indicated that the emission factor is about 4.23 kg CO2/kg COD. Furthermore, impact of different factors, such as treatment processes, distribution regions, plant scales, operational load rate and month, were compared. On this basis, recommendations were proposed for GHG emission reduction.
Keywords :
air pollution; wastewater treatment; China; climate change; distribution region; energy consumption; estimation procedure; global warming effect; greenhouse gas emission reduction; greenhouse gas generation; operational load rate; plant scale; wastewater treatment plant; Carbon dioxide; Energy consumption; Estimation; Global warming; Meteorology; Production; Wastewater treatment; greenhouse gas emissions; wastewater treatment plants;
Conference_Titel :
Water Resource and Environmental Protection (ISWREP), 2011 International Symposium on
Conference_Location :
Xi´an
Print_ISBN :
978-1-61284-339-1
DOI :
10.1109/ISWREP.2011.5893297
