Fig. 1
From: Greenhouse gas emissions from municipal wastewater treatment facilities in China from 2006 to 2019
The flowchart of the construction of firm-level GHG emissions inventory of wastewater treatment facilities from 2006 to 2019 in China. Only biological treatment processes emit on-site GHG, but physical, chemical, and physicochemical treatment technologies do not generate on-site GHG emissions.
