Environmental Science & Technology,
Journal Year:
2024,
Volume and Issue:
58(24), P. 10632 - 10643
Published: May 31, 2024
The
feasibility
of
a
synergistic
endogenous
partial
denitrification-phosphorus
removal
coupled
anammox
(SEPD-PR/A)
system
was
investigated
in
modified
anaerobic
baffled
reactor
(mABR)
for
synchronous
carbon,
nitrogen,
and
phosphorus
removal.
mABR
comprising
four
identical
compartments
(i.e.,
C1–C4)
inoculated
with
precultured
denitrifying
glycogen-accumulating
organisms
(DGAOs),
polyphosphate-accumulating
organisms,
bacteria.
After
136
days
operation,
the
chemical
oxygen
demand
(COD),
total
efficiencies
reached
88.6
±
1.0,
97.2
1.5,
89.1
4.2%,
respectively.
Network-based
analysis
revealed
that
biofilmed
community
demonstrated
stable
nutrient
performance
under
oligotrophic
conditions
C4.
metagenome-assembled
genomes
(MAGs)
such
as
MAG106,
MAG127,
MAG52,
MAG37
annotated
phosphorus-accumulating
(DPAOs)
MAG146
DGAO
were
dominated
C1
C2
contributed
to
89.2%
COD
consumption.
MAG54
MAG16
Candidatus_Brocadia
(total
relative
abundance
16.5%
C3
4.3%
C4)
responsible
74.4%
nitrogen
through
anammox-mediated
pathway.
Functional
gene
based
on
metagenomic
sequencing
confirmed
different
capable
performing
distinct
functions
specific
advantageous
microbial
groups,
facilitating
targeted
Additionally,
conditions,
activity
bacteria-related
genes
hzs
higher
compared
hdh.
Thus,
an
innovative
method
treatment
low-strength
municipal
nitrate-containing
wastewaters
without
aeration
presented,
mediated
by
process
less
land
area
excellent
quality
effluent.
Desalination and Water Treatment,
Journal Year:
2024,
Volume and Issue:
317, P. 100299 - 100299
Published: Jan. 1, 2024
Traditional
activated-sludge
treatment
technologies,
such
as
anaerobic/anoxic/aerobic
processes,
oxidation
ditch
and
sequential
batch
reactors,
play
a
crucial
role
in
the
removal
of
nitrogen
phosphorus
from
municipal
wastewater.
The
synergistic
interactions
among
functional
microorganisms,
primarily
nitrogen-removal
organisms
phosphorus-accumulating
organisms,
are
paramount
these
processes.
However,
traditional
activated
sludge
technology
consumes
large
amounts
energy
produces
substantial
volume
waste-activated
sludge,
necessitating
upgrade
wastewater
plants
(WWTPs)
focusing
on
sustainable
development
goals.
This
review
analyzes
characterizes
key
microorganisms
(Nitrosomonas,
Nitrosospira,
Nitrobacter,
Nitrospira,
Thauera,
Pseudomonas,
Candidatus
Brocadia,
Kuenenia,
Accumulibacter)
involved
treatment.
It
also
explores
impact
operating
conditions,
influent
quality,
reactor
configurations
regulation
for
efficient
nutrient
removal,
with
emphasis
upgrading
reconstructing
techniques
full-scale
anaerobic
ammonium
(anammox)
Integrated
fixed-film
sludge-based
(IFAS),
aerobic
granular
(AGS),
moving
bed
biofilm
(MBBR)
technologies
promising
to
enhance
transform
conventional
realizing
new
engineering
applications
practices.
Other
developments
use
heterotrophic
denitrifying
bacteria
Thauera
anammox
(Candidatus
Brocadia
Kuenenia)
mainstream
partial
denitrification/anammox
which
potentially
expandable
WWTPs.
