The
integration
of
powdered
activated
carbon
(PAC)
and
biofilm
carriers
in
a
membrane
bioreactor
(MBR)
presents
promising
approach
to
address
the
challenge
long
hydraulic
retention
time
(HRT)
for
nitrification
hydrolysed
urine.
This
study
investigated
effect
incorporation
MBR
on
microbial
dynamics,
focusing
dominant
nitrifying
bacteria.
results
showed
that
significant
shifts
compositions
were
observed
with
feed
transition
full-strength
urine
across
different
sludge
growth
forms.
Remarkably,
nitrite-oxidising
bacteria
Nitrospira
was
highly
enriched
suspended
sludge,
while
ammonia-oxidising
bacteria,
Nitrosococcaceae
thrived
predominantly
attached
biomass,
showing
seven-fold
increase
relative
abundance
compared
its
counterpart.
Consequently,
incorporated
displayed
36%
higher
rate
40%
HRT
reduction
conventional
MBR,
providing
valuable
insights
potential
development
compact
efficient
towards
circular
economy
nutrients.
Bioresource Technology,
Journal Year:
2024,
Volume and Issue:
397, P. 130462 - 130462
Published: Feb. 16, 2024
The
integration
of
powdered
activated
carbon
and
biofilm
carriers
in
a
membrane
bioreactor
(MBR)
presents
promising
approach
to
address
the
challenge
long
hydraulic
retention
time
(HRT)
for
nitrification
hydrolysed
urine.
This
study
investigated
effect
incorporation
MBR
on
microbial
dynamics,
focusing
dominant
nitrifying
bacteria.
results
showed
that
significant
shifts
compositions
were
observed
with
feed
transition
full-strength
urine
across
different
sludge
growth
forms.
Remarkably,
nitrite-oxidizing
bacteria
Nitrospira
highly
enriched
suspended
sludge.
Simultaneously,
ammonia-oxidizing
bacteria,
Nitrosococcaceae
thrived
attached
biomass,
showing
seven-fold
increase
relative
abundance
compared
its
counterpart.
Consequently,
incorporated
displayed
36%
higher
rate
40%
HRT
reduction
conventional
MBR.
provides
valuable
insights
potential
development
household
or
building
scale
on-site
nutrient
recovery
from
fertiliser.
