SB	Sludge-based biochar
MLSSs	Mixed liquor suspended solids
MLVSSs	Mixed liquor volatile suspended solids
COD	Chemical oxygen demand
NDRC	National development and reform commission
PFASs	Perfluoroalkyl and polyfluoroalkyl substances
TGA	Thermogravimetric analysis
DTG	Derivative thermogravimetry
BET	Brunauer–Emmett–Teller
XRD	X-ray diffraction
XPS	X-ray photoelectron spectroscopy
FTIR	Fourier-transform infrared spectroscopy
EEM	Excitation–emission matrix spectroscopy
DOM	Dissolved organic matter
PFO	Pseudo-first-order
PSO	Pseudo-second-order