Frontiers in Microbiology,
Journal Year:
2023,
Volume and Issue:
14
Published: Sept. 1, 2023
In
this
study,
the
effects
of
different
enzymes
(lysozyme,
α-amylase
and
neutral
protease)
on
sludge
hydrolysis
efficiency
microbial
community
in
sequencing
batch
reactor
(SBR)
were
introduced.
The
results
showed
that
efficiencies
three
48.5,
22.5
31%,
respectively,
compared
with
accumulated
discharge
blank
control
group.
However,
it
has
varying
degrees
impact
effluent
quality,
denitrification
phosphorus
removal
effect
system
deteriorates.
lysozyme
achieves
optimal
48.5%
greatest
chemical
oxygen
demand
(COD),
total
nitrogen
(TN),
nitrate
(NO3--N)
effluent.
samples
group
groups
supplemented
enzyme
preparations
subjected
to
high-throughput
sequencing.
It
was
found
number
OTUs
(Operational
Taxonomic
Units)
>
protease.
Moreover,
abundance
grade
curve
smoother,
richness
diversity
improved
by
α-amylase.
species
protease
great,
succession
obvious.
introduction
did
not
change
main
communities
sludge,
which
mainly
Proteobacteria,
Actinobacteria
Bacteroidetes.
reduction
during
pilot
operation
analyzed,
gap
research
filled,
provided
theoretical
value
for
practical
enzymatic
reduction.
