Water,
Год журнала:
2024,
Номер
16(13), С. 1790 - 1790
Опубликована: Июнь 25, 2024
Constructed
wetland
systems
employing
submerged
macrophytes
are
increasingly
utilized
for
treating
municipal
and
industrial
wastewater,
as
well
odoriferous
eutrophic
water
bodies.
However,
the
pollutant
removal
efficiency
of
these
needs
further
enhancement.
In
this
study,
we
examined
impact
gas-to-water
ratio
on
treatment
constructed
Vallisneria.
We
also
extracellular
polymeric
substances
(EPSs)
floating
biofilm
structure
microbial
community
in
system.
Our
findings
showed
that
significantly
affects
total
nitrogen
(TN)
rate
within
Vallisneria
wetlands,
with
an
optimum
at
a
15:1,
while
efficiencies
chemical
oxygen
demand
(COD),
NH4+-N,
phosphorus
(TP)
remain
relatively
unaffected.
Increased
ratios
corresponded
to
notable
decrease
EPSs.
High-throughput
sequencing
analysis
demonstrated
shift
biofilm-denitrifying
bacteria
from
anoxic
heterotrophic
aerobic
denitrifiers,
alongside
significant
rise
abundance
denitrifying
bacteria,
whereas
excessively
high
inhibited
growth
bacteria.
A
15:1
constituted
optimal
condition
ecological
restoration
body
systems.
These
results
could
contribute
optimization
submerged-macrophyte
system
design
enhancement
efficiency.
