The
use
of
municipal
sludge,
as
a
seed
to
initiate
autotrophic
nitrogen
removal
(ANR)
process
is
challenging
because
the
abundance
anaerobic
ammonia-oxidizing
bacteria
(AnAOB)
negligible.
In
this
study,
high-height-diameter-ratio
airlift
inner-circulation
partition
bioreactor
(HHAIPBR)
was
operated
for
175
d
enrich
AnAOB
from
and
performance
ANR
investigated.
start-up
period
HHAIPBR
inoculated
with
sludge
required
approximately
69
d.
A
high
performance,
mean
TNRE
82.1%,
obtained
1
month.
computational
fluid
dynamics
model
used
simulate
volume
fraction
particle
velocity.
simulation
results
perfectly
validated
DO
distribution
characteristics
inside
reactor,
further
supporting
promotion
granulation
via
height-to-diameter
ratio.
Nitrosomonas
(3.31%)
Proteobacteria
Candidatus
Brocadia
(6.56%)
Planctomycetota
were
dominant
in
HHAIPBR.
This
study
presents
viable
approach
industrial
cultivation
anammox
rapid
PNA
system.
IEEE Sensors Journal,
Год журнала:
2024,
Номер
24(23), С. 38584 - 38588
Опубликована: Авг. 16, 2024
A
microfluidic
electrochemical
sensor
is
fabricated
for
the
measurement
of
chemical
oxygen
demand
(COD)
in
surface
waters,
such
as
lakes
and
reservoirs.
An
Au
interdigital
electrode
used
a
substrate,
layer
nanoparticles
(AuNPs)
deposited
on
working
(WE)
to
form
functionalized
WE.
polydimethylsiloxane
(PDMS)
device
was
integrated
with
AuNPs/Au
PDMS-AuNPs/Au
sensor.
Water
samples
are
transferred
into
out
through
peristaltic
pump
Tygon
tubes,
online
COD
detection
achieved
using
an
workstation.
The
linear
range
0–400
mg/L,
limit
0.12
which
much
lower
than
concentration
20
mg/L
specified
by
Chinese
national
standard.
In
addition,
five
real
water
evaluated,
values
good
agreement
that
standard
method.
size
only
$30\times
10\times
5$
mm,
each
can
be
obtained
within
3
min,
no
toxic
reagents
needed.
has
convenience
integration
provides
new
idea
detection.
The
use
of
municipal
sludge,
as
a
seed
to
initiate
autotrophic
nitrogen
removal
(ANR)
process
is
challenging
because
the
abundance
anaerobic
ammonia-oxidizing
bacteria
(AnAOB)
negligible.
In
this
study,
high-height-diameter-ratio
airlift
inner-circulation
partition
bioreactor
(HHAIPBR)
was
operated
for
175
d
enrich
AnAOB
from
and
performance
ANR
investigated.
start-up
period
HHAIPBR
inoculated
with
sludge
required
approximately
69
d.
A
high
performance,
mean
TNRE
82.1%,
obtained
1
month.
computational
fluid
dynamics
model
used
simulate
volume
fraction
particle
velocity.
simulation
results
perfectly
validated
DO
distribution
characteristics
inside
reactor,
further
supporting
promotion
granulation
via
height-to-diameter
ratio.
Nitrosomonas
(3.31%)
Proteobacteria
Candidatus
Brocadia
(6.56%)
Planctomycetota
were
dominant
in
HHAIPBR.
This
study
presents
viable
approach
industrial
cultivation
anammox
rapid
PNA
system.
