China's Urban Methane Emissions From Municipal Wastewater Treatment Plant

Zhao, X.1; Jin, X. K.2; Guo, W.3; Zhang, C.4; Shan, Y. L.5,6; Du, M. X.7; Tillotson, M. R.8; Yang, H.9; Liao, X. W.10; Li, Y. P.1

2019-04

10.1029/2018EF001113

Earths Future   影响因子和分区

2328-4277

The increased number and capacity of municipal wastewater treatment plants (WWTPs) in China has driven the emission of methane (CH4). Few studies have focused on quantification of CH4 emissions from municipal WWTPs of different cities and analysis of socioeconomic factors influencing the quantity of emissions. Here we estimated CH4 emissions from WWTPs in China for 229 prefectural-level cities, based on data from 2,019 working municipal WWTPs. The results show the total CH4 emissions to be 1,169.8 thousand tons (29.2 MtCO(2)e) in 2014, which is over three times that of the municipal WWTPs in the United States in 2016. Large cities along the east coast regions had larger CH4 emissions in absolute and per capita terms. Correlation analysis shows that cities with higher gross domestic product, household food consumption expenditure, or household consumption expenditure produced more degradable organics in wastewater, thus more CH4 emissions. Measures to control the sources of degradable organics and regulate WWTP processes with less emission factor are key to mitigate CH4 emissions. In addition to aerobic or anaerobic wastewater treatment systems, factors such as wastewater temperature, length of sewer, and the addition of nitrate that influencing emission factor are suggested to be involved in CH4 emission modeling.

greenhouse gas sewage treatment urbanization emission factor

SCI

英语

其他

National Science Funds for Creative Research Groups of China[51421006]

Environmental Sciences & Ecology ; Geology ; Meteorology & Atmospheric Sciences

Environmental Sciences ; Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences

WOS:000467396900012

AMER GEOPHYSICAL UNION

Web of Science

1.Hohai Univ, Coll Environm, Minist Educ, Key Lab Integrated Regulat & Resource Dev Shallow, Nanjing, Jiangsu, Peoples R China
2.Tokyo Inst Technol, Sch Environm & Soc, Tokyo, Japan
3.Southern Univ Sci & Technol, Sch Environm Sci & Engn, Shenzhen, Peoples R China
4.Tongji Univ, Sch Econ & Management, Shanghai, Peoples R China
5.Univ East Anglia, Tyndall Ctr Climate Change Res, Norwich, Norfolk, England
6.Univ East Anglia, Sch Environm Sci, Norwich, Norfolk, England
7.Peking Univ, Sch Phys, Dept Atmospher & Ocean Sci, Lab Climate & Ocean Atmosphere Studies, Beijing, Peoples R China
8.Univ Leeds, Sch Civil Engn, Leeds, W Yorkshire, England
9.Swiss Fed Inst Aquat Sci & Technol Eawag, Dubendorf, Switzerland
10.Univ Oxford, Environm Change Inst, Oxford, England

Zhao, X.,Jin, X. K.,Guo, W.,et al. China's Urban Methane Emissions From Municipal Wastewater Treatment Plant[J]. Earths Future,2019,7(4):480-490.

Zhao, X..,Jin, X. K..,Guo, W..,Zhang, C..,Shan, Y. L..,...&Li, Y. P..(2019).China's Urban Methane Emissions From Municipal Wastewater Treatment Plant.Earths Future,7(4),480-490.

Zhao, X.,et al."China's Urban Methane Emissions From Municipal Wastewater Treatment Plant".Earths Future 7.4(2019):480-490.