IntechOpen eBooks,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 30, 2024
This
chapter
deals
with
the
treatment
and
management
of
sludge
resulting
from
wastewater
using
membrane
bioreactor
(MBR)
technology.
With
increase
in
world
population
industrial
activities,
demand
for
effective
has
increased,
generating
significant
amounts
sludge.
Although
MBR
technology
is
more
efficient
terms
effluent
quality,
it
produces
different
rheological
morphological
characteristics
than
conventional
activated
discusses
various
methods
treating
sludge,
including
stabilization,
dewatering,
thermal
treatment,
which
are
essential
improving
quality
reducing
disposal
costs.
It
also
examines
potential
reuse
agriculture,
highlighting
such
as
composting
pelletization
sustainable
approaches.
These
not
only
mitigate
environmental
impacts
but
contribute
to
a
circular
economy
by
converting
waste
into
valuable
resources.
The
concludes
importance
proper
ensure
compliance
regulations
fully
utilize
resource.
Fermentation,
Journal Year:
2024,
Volume and Issue:
10(6), P. 289 - 289
Published: May 30, 2024
Extra
energy
consumption,
inefficient
nitrogen
removal,
and
excessive
sludge
production
are
major
challenges
faced
by
wastewater
treatment
plants
(WWTPs)
that
rely
on
the
traditional
activated
process.
Fermentation
of
wasted
(WAS)
novel
removal
technologies
based
partial
nitrification
(PN)
have
emerged
as
promising
solutions
to
these
issues.
Recent
studies
revealed
an
innovative
strategy
integrates
two
processes
supplementing
fermentation
liquid
into
induce
PN.
This
review
summarizes
research
progress
PN
establishment
induced
The
microbiology
methods
briefly
introduced,
followed
a
detailed
discussion
process,
influencing
factors,
product
characteristics
WAS
fermentation.
core
section
focuses
side-stream
main-stream
approaches
fermentation-induced
PN,
comparing
their
performance
application
prospects.
potential
mechanisms
explored,
with
emphasis
roles
free
ammonia
for
approach
high
tolerance
ammonium
oxidizers
in-site
stress
approach.
Finally,
limitations
current
future
perspectives
discussed,
highlighting
need
further
investigation
microbial
ecology,
process
optimization,
long-term
stability.
aims
provide
insights
synergistic
integration
sustainable
energy-efficient
treatment.
ACS ES&T Engineering,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 8, 2024
Thiosulfate-assisted
anaerobic
fermentation
(AF)
effectively
converts
waste
activated
sludge
into
high-value
products
(e.g.,
short-chain
fatty
acids
(SCFAs)).
However,
the
roles
of
thiosulfate
in
organics
transformation,
electron
transfer,
and
microbial
interactions
within
AF
systems
are
not
fully
understood,
especially
under
long-term
operations.
In
this
study,
an
88
day
experiment
was
conducted
to
address
knowledge
gap.
The
results
indicated
average
SCFA
yield
3625.1
mg
COD/L
acetate
proportion
49.4%
with
a
dosage
600
S/L.
Model
organic
degradation
tests
revealed
that
functioned
as
acceptor,
facilitating
NAD+/NADH
stimulating
expression
protein
complexes
like
cytochrome
c
enhance
transport,
lowering
thermodynamic
barriers
propionate
butyrate
(ΔG1propionate
=
−335.0
kJ/mol;
ΔG2butyrate
−113.8
kJ/mol).
Molecular
ecological
networks
analysis
showed
strengthened
cooperative
relationships
among
biomarkers
hydrolytic
bacteria
(i.e.,
Proteiniphilum,
UBA5851),
acidogenic
UBA4179),
sulfur
reducers
JAEUSI01).
Functional
gene
using
random
forest
confirmed
upregulated
key
genes
2-oxoacid
ferredoxin
oxidoreductase)
associated
transfer
metabolism.
This
study
deepens
our
understanding
thiosulfate,
strengthening
cooperation
systems.
IntechOpen eBooks,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 30, 2024
This
chapter
deals
with
the
treatment
and
management
of
sludge
resulting
from
wastewater
using
membrane
bioreactor
(MBR)
technology.
With
increase
in
world
population
industrial
activities,
demand
for
effective
has
increased,
generating
significant
amounts
sludge.
Although
MBR
technology
is
more
efficient
terms
effluent
quality,
it
produces
different
rheological
morphological
characteristics
than
conventional
activated
discusses
various
methods
treating
sludge,
including
stabilization,
dewatering,
thermal
treatment,
which
are
essential
improving
quality
reducing
disposal
costs.
It
also
examines
potential
reuse
agriculture,
highlighting
such
as
composting
pelletization
sustainable
approaches.
These
not
only
mitigate
environmental
impacts
but
contribute
to
a
circular
economy
by
converting
waste
into
valuable
resources.
The
concludes
importance
proper
ensure
compliance
regulations
fully
utilize
resource.
