Environmental Science & Technology,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 28, 2025
Short-cut
biological
nitrogen
removal
(sBNR)
favors
the
paradigm
shift
toward
energy-positive
and
carbon-neutral
wastewater
treatment
processes.
Partial
nitrification
(PN)
is
a
key
approach
to
provide
nitrite
for
anammox
or
denitritation
during
sBNR,
its
stability
precondition
achieving
robust
performance.
However,
maintaining
stable
mainstream
PN
process
has
been
long-standing
challenge.
This
review
analyzes
from
microbial
ecology
perspective,
focusing
on
niche
differentiation
among
nitrifiers.
First,
we
propose
that
systems
are
ecologically
unstable,
failure
of
due
reactivation
nitrite-oxidizing
bacteria
(NOB)
can
be
regarded
as
behavior
restore
system
stabilization.
Thus,
primarily
relies
enhancing
between
ammonia-oxidizing
(AOB)
NOB.
We
then
summarize
realized
niches
indigenous
nitrifiers
within
discuss
their
ecophysiological
characteristics
(e.g.,
cell
structure
substrate
affinity)
define
specific
ecological
niches.
By
comparing
breadths
AOB
NOB
various
axes,
further
identify
different
responses
(resistance)
(resilience)
exogenous
perturbations.
Finally,
outlook
through
an
lens.
provides
insights
into
instability
process,
which
intended
guide
derivation
optimized
strategies
single-factor
integrated
solutions.
Microorganisms,
Год журнала:
2025,
Номер
13(4), С. 899 - 899
Опубликована: Апрель 14, 2025
The
leachate
from
ion-adsorbed
rare
earth
tailings
poses
challenges
to
the
application
of
anaerobic
ammonium
oxidation
(anammox)
process
in
this
field
due
its
large
fluctuations
ammonia
nitrogen
concentration
(50–300
mg/L)
and
high
flow
rate
(4000–10,000
m3/d).
This
study
investigated
effects
nitrogen-loading
(NLR)
regulation
on
denitrification
performance
through
reactor
operation
elucidated
mechanisms
NLR
impacts
anammox
processes
via
microbial
community
analysis
metabolic
profiling.
results
revealed
a
nonlinear
relationship
between
loading
system
performance.
As
increased,
both
efficiency
bacterial
abundance
(rising
5.85%
phase
P1
11.43%
P3)
showed
synchronous
enhancement.
However,
excessive
(>3.68
kg/m3·d)
or
starvation
led
deterioration
reduced
abundance.
Microbial
communities
adopted
modular
collaboration
counteract
stress,
with
modularity
indices
0.563
0.545
observed
inhibition
(P2)
(P4),
respectively.
Zi-Pi
plot
demonstrated
significant
increase
inter-module
connectivity,
indicating
reinforced
interspecies
interactions
among
microorganisms
resist
fluctuations.
Environmental Science & Technology,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 28, 2025
Short-cut
biological
nitrogen
removal
(sBNR)
favors
the
paradigm
shift
toward
energy-positive
and
carbon-neutral
wastewater
treatment
processes.
Partial
nitrification
(PN)
is
a
key
approach
to
provide
nitrite
for
anammox
or
denitritation
during
sBNR,
its
stability
precondition
achieving
robust
performance.
However,
maintaining
stable
mainstream
PN
process
has
been
long-standing
challenge.
This
review
analyzes
from
microbial
ecology
perspective,
focusing
on
niche
differentiation
among
nitrifiers.
First,
we
propose
that
systems
are
ecologically
unstable,
failure
of
due
reactivation
nitrite-oxidizing
bacteria
(NOB)
can
be
regarded
as
behavior
restore
system
stabilization.
Thus,
primarily
relies
enhancing
between
ammonia-oxidizing
(AOB)
NOB.
We
then
summarize
realized
niches
indigenous
nitrifiers
within
discuss
their
ecophysiological
characteristics
(e.g.,
cell
structure
substrate
affinity)
define
specific
ecological
niches.
By
comparing
breadths
AOB
NOB
various
axes,
further
identify
different
responses
(resistance)
(resilience)
exogenous
perturbations.
Finally,
outlook
through
an
lens.
provides
insights
into
instability
process,
which
intended
guide
derivation
optimized
strategies
single-factor
integrated
solutions.
