Diverse
pretreatment
methods
have
been
developed
for
cell-cracking
and
sludge
denaturation
to
harvest
pretreated
as
the
suitable
fermentation
substrate.
However,
new
inoculation
is
not
always
working
quickly
or
adaptively
sludge.
This
study
established
sludge-degradation
microorganism
preservation
(SDMP)
method
by
integrating
rhamnolipid
(RL)
high-speed
hydrocyclone
(HSHC)
fully
use
enriched
microorganisms
with
decomposing
enzymes/abilities
at
decline
phase
organic
matters
bioconversion.
The
results
showed
SDMP
efficiently
cracked
extracellular
polymeric
substances
(EPS)
but
preserved
enhanced
microbial
viability
activity
of
hydrolytic
acidifying
enzymes.
Then
volatile
fatty
acids
(VFAs)
production
cycle
treated
was
shortened
36.25%
than
alkaline
sludge,
yield
reached
4482.19
mgCOD/L
in
3
days
matter
conversion
rate
369.36
mgCOD/gVSS.
Preserved
microorganisms,
including
Mycobacterium,
norank_f__Pirellulaceae,
IMCC26207,
norank_f__JG30-KF-CM45,
Petrimonas,
played
positive
roles
accelerating
VFAs
production.
Water Cycle,
Год журнала:
2024,
Номер
5, С. 146 - 155
Опубликована: Янв. 1, 2024
Short-time
aerobic
digestion
(STAD)
of
sludge
requires
low
investment
and
has
the
advantages
short
retention
time
rapid
degradation
organic
matter
in
waste
activated
(WAS).
This
research
conducted
STAD
at
three
temperature
gradients
(15°C,
25°C,
35°C).
Characteristics
EPS
microbial
community
structure
raw
fermented
were
analyzed,
environmental
application
potential
different
temperatures
was
explored.
treatment
improved
both
polysaccharide
(PS)
protein
(PN)
contents
EPS,
with
increases
5.7‒18.35%
20.98‒28.57%,
respectively.
Aromatic
protein-like
substances
(Peak
E)
tryptophan
F)
main
components
PN
EPS.
The
species
richness
decreased
as
increased.
At
class
level,
significantly
affected
Alphaproteobacteria,
Gemm-1,
Chloracidobacteria,
Acidimicrobiia,
Ellin6529,
Betaproteobacteria,
SJA-28.
From
an
perspective,
specific
resistance
to
filtration
(SRF)
value
WAS
after
35°C
7.01×107
m/kg
a
17.34%
reduction,
indicating
improvement
dewaterability
sludge.
Pb2+
adsorption
efficiency
per
unit
volume
increased
by
10.0‒16.2%
for
four
hours.
elucidated
impact
on
systems,
finding
that
abundance
correlated
characteristics.
results
provide
basis
optimizing
system
systems
deeper
understanding
benefits
practical
applications
resource
utilization.
