This
study
aimed
to
elucidate
the
influence
of
different
wastewater
qualities
on
operational
performance,
microbial
community
dynamics,
and
changes
in
expression
nitrogen
removal-related
functional
genes
during
biofilm
formation
a
novel
Moving
Bed
Biofilm
Reactor
(MBBR)
(a
pilot-scale
3
m3)
reactor
startup
with
Heterotrophic
Nitrification-Aerobic
Denitrification
(HN-AD)
bacteria
inoculation.
It
was
observed
that
for
real
occurred
30
days
faster
than
simulated
wastewater,
achieved
within
only
45
days.
Additionally,
average
removal
rates
NH4+-N
TN
were
16.24%
14.90%
higher,
respectively.
Microbial
analysis
revealed
relative
abundances
Thauera
Zoogloea
carriers
9.26%
14.09%
respectively,
making
them
key
genera
contributing
enhanced
compared
wastewater.
Further
abundance
napA
napB
showed
an
increase
0.40%
confirming
pivotal
role
AD
processes.
The
HN-AD
pathway
MBBR
inferred
as
NH4+→NH2OH→NO2-→NO3-→NO2-→NO→N2O→N2.
efficient
high-ammonia
pollutants
using
system,
providing
engineering
application
guidance
treatment
industrial
inoculating
into
(HNAD-MBBR).
The Science of The Total Environment,
Journal Year:
2024,
Volume and Issue:
946, P. 174174 - 174174
Published: June 24, 2024
Human
urine
contains
9
g/L
of
nitrogen
(N)
and
0.7
phosphorus
(P).
The
recovery
N
P
from
helps
close
the
nutrient
loop
increase
resource
circularity
in
sewage
treatment
sector.
Urine
contributes
an
average
80
%
50
sewage,
whereby
source
segregation
could
reduce
burden
removal
plants
(STPs)
but
result
deficiency
unintended
negative
consequences.
This
review
examines
potential
impacts
on
organic
carbon
nutrients,
sludge
characteristics
greenhouse
gas
emissions
activated
processes.
details
how
these
affect
operation
STPs
were
also
included.
foresee
operational
challenges
that
established
may
face
when
dealing
with
nutrient-deficient
a
future
where
separation
is
norm.
findings
indicate
requirement
nitrification-denitrification
biological
processes
shrink
at
above
100
%,
respectively.
Organic
carbon,
can
be
severely
affected
under
full
segregation.
decrease
solid
retention
time
due
to
increases
capacity
up
48
%.
Sludge
flocculation
settleability
would
deteriorate
changes
extracellular
polymeric
substances
induce
various
forms
bulking.
Beneficially,
reduces
nitrous
oxide
emissions.
These
emphasise
importance
considering
preparing
for
caused
by
segregation-induced
This
study
aimed
to
elucidate
the
influence
of
different
wastewater
qualities
on
operational
performance,
microbial
community
dynamics,
and
changes
in
expression
nitrogen
removal-related
functional
genes
during
biofilm
formation
a
novel
Moving
Bed
Biofilm
Reactor
(MBBR)
(a
pilot-scale
3
m3)
reactor
startup
with
Heterotrophic
Nitrification-Aerobic
Denitrification
(HN-AD)
bacteria
inoculation.
It
was
observed
that
for
real
occurred
30
days
faster
than
simulated
wastewater,
achieved
within
only
45
days.
Additionally,
average
removal
rates
NH4+-N
TN
were
16.24%
14.90%
higher,
respectively.
Microbial
analysis
revealed
relative
abundances
Thauera
Zoogloea
carriers
9.26%
14.09%
respectively,
making
them
key
genera
contributing
enhanced
compared
wastewater.
Further
abundance
napA
napB
showed
an
increase
0.40%
confirming
pivotal
role
AD
processes.
The
HN-AD
pathway
MBBR
inferred
as
NH4+→NH2OH→NO2-→NO3-→NO2-→NO→N2O→N2.
efficient
high-ammonia
pollutants
using
system,
providing
engineering
application
guidance
treatment
industrial
inoculating
into
(HNAD-MBBR).
