Environmental Science & Technology,
Год журнала:
2024,
Номер
58(23), С. 10149 - 10161
Опубликована: Май 29, 2024
Further
reducing
total
nitrogen
(TN)
and
phosphorus
(TP)
in
the
secondary
effluent
needs
to
be
realized
effectively
an
eco-friendly
manner.
Herein,
four
pyrite/sawdust
composite-based
biofilters
were
established
treat
simulated
for
304
days.
The
results
demonstrated
that
TN
TP
concentrations
from
under
optimal
hydraulic
retention
time
(HRT)
of
3.5
h
stable
at
<2.0
0.1
mg/L,
respectively,
no
significant
differences
observed
between
inoculated
sludge
sources.
had
low
N2O,
CH4,
CO2
emissions,
effluent's
DOM
was
mainly
composed
five
fluorescence
components.
Moreover,
mixotrophic
denitrifiers
(Thiothrix)
sulfate-reducing
bacteria
(Desulfosporosinus)
contributing
microbial
sulfur
cycles
enriched
biofilm.
Co-occurrence
network
analysis
deciphered
Chlorobaculum
Desulfobacterales
key
genera,
which
formed
obvious
cycle
process
strengthened
denitrification
capacity.
higher
abundances
genes
encoding
extracellular
electron
transport
(EET)
chains/mediators
revealed
pyrite
not
only
functioned
as
conduit
stimulate
direct
interspecies
transfer
by
flagella
but
also
facilitated
EET-associated
enzymes
denitrification.
This
study
comprehensively
evaluates
water–gas–biofilm
phases
during
a
long-term
study,
providing
in-depth
understanding
boosted
pyrite-based
systems.
