Technical Education Science/Giáo dục Kỹ thuật,
Journal Year:
2022,
Volume and Issue:
73, P. 80 - 85
Published: Dec. 28, 2022
In
this
study,
a
native
wild
plant,
Chrysopogon
zizanioides
(C-zi),
was
used
in
wetland
system
to
treat
household
wastewater.
The
root
of
the
C-zi
is
comprised
primary
roots,
secondary
and
filamentous
roots
that
all
extend
vertically
deep
into
soil
rather
than
spreading
horizontally.
Depending
on
concentration
influent
water,
water
entering
vetiver-containing
tank
stored
for
3
5
days.
These
results
demonstrated
C-superior
zi's
ability
degrade
organic
waste
as
well
nutrients.
COD,
BOD,
phosphorus,
ammonia
are
removed
with
high
degree
effectiveness
(82%,
82%,
80%,
76%,
respectively)
both
stages
domestic
wastewater
treatment.
plant's
had
grown
from
30
centimeters
length
over
course
three
months.
aspects
treatment
biomass
growth
system,
it
proposed
use
favorable.
Journal of Water Process Engineering,
Journal Year:
2023,
Volume and Issue:
53, P. 103832 - 103832
Published: May 26, 2023
This
study
focuses
on
the
use
of
climbing
ornamentals
and
ornamental
plants
for
greywater
treatment
in
vertical
flow
constructed
wetlands.
Different
design
parameters,
such
as
substrate
(sand
or
vermiculite),
saturation
zone,
plant
species
(Trachelospermum
jasminoides,
Lonicera
japonica,
Callistemon
laevis)
were
evaluated
optimal
removal
studied
pollutants.
Results
revealed
that,
regarding
tested
substrates,
sand
with
without
zone
presented
significantly
higher
rates
turbidity
(94
±
5
%)
Chemical
Oxygen
Demand:
(96
7
than
vermiculite
(Turbidity:
54
23
%;
73
29
%).
Moreover,
slightly
recorded
vegetated
systems
compared
to
unvegetated
systems.
According
findings,
all
examined
survived
grew
wetlands
receiving
up
204
mm
per
day.
However,
L.
japonica
C.
laevis
are
more
well-adapted
wetland
T.
jasminoides.
Overall,
application
buildings
seems
like
a
very
promising
option
improve
aesthetic
appearance
consequently
increase
public
acceptance.
Journal of Water Resource and Protection,
Journal Year:
2025,
Volume and Issue:
17(01), P. 14 - 34
Published: Jan. 1, 2025
Constructed
Wetlands
(CWs)
are
currently
one
of
the
most
promising
techniques
for
wastewater
treatment,
having
demonstrated
their
effectiveness.
However,
choice
substrate
particle
size
is
critical
to
smooth
operation
process,
as
hydrodynamic
constraints
require
a
coarse
size,
whereas
treatment
recommends
fine
size.
This
study
investigates
suitability
laterite
and
shale
substrates
different
sizes
(1
-
3,
3
5
8
mm)
in
CWs
domestic
treatment.
The
was
carried
out
an
experimental
pilot
plant
consisting
12
parallelepiped
beds
(C
×
C
=
0.4
m2;
H
0.6
m)
filled
from
bottom
top
with
0.1
m
gravel
or
grain
two
replications.
During
six
months
operation,
biomass
stem
diameter
Pennisetum
purpureum
used
vegetation
were
determined.
Raw
treated
water
also
sampled
analyzed
pollutants,
including
chemical
oxygen
demand
(COD),
biochemical
(BOD5),
total
Kjedahl
nitrogen
(TKN),
phosphorus
(TP),
suspended
solids
(TSS),
using
International
Organization
Standardization
(ISO)
analytical
methods.
P.
developed
much
better
CW
lined
shale;
ranged
13.8
14.7
kg/m2
11.2
12.5
laterite,
respectively,
did
stump
diameter,
which
15.5
16.1
cm
11.10
12.7
cm,
respectively.
highest
values
each
material
obtained
1
mm
geomaterials.
Pollutant
removal
efficiencies
(76.9%
83%
COD,
78%
84.7%
BOD5,
55.5%
72.2%
TKN,
58.4%
72.4%
TP,
78.1%
80.2%
TSS),
recorded
shale-lined
beds.
both
materials
provided
quality
filtrates
(140
174
mg/L
78.5
94.8
4.6
5.7
TP)
line
local
discharge
levels.
geomaterials
appears
be
suitable
optimization
purposes,
although
further
work
these
materials,
such
increasing
depth
wetland,
required
improve
level
NTK
TSS
discharge.
International Journal of Phytoremediation,
Journal Year:
2025,
Volume and Issue:
unknown, P. 1 - 13
Published: April 7, 2025
This
study
investigated
two
lab-scale
CW
systems,
traditional
horizontal
flow
(HFCW)
and
baffled
(BHFCW),
as
a
treatment
process
in
CWs
filled
with
porous
gravel
planted
Typha
latifolia.
BHFCW
achieved
average
removal
efficiencies
of
88.65,
86.00,
84.17%
for
TSS,
BOD5,
and,
COD,
respectively.
Meanwhile,
HFCW,
the
these
pollutants
were
88.48,
81.07,
77.89%,
The
results
demonstrated
that
is
reliable
alternative
to
enhance
performance
nitrogen
compared
HFCW.
removals
best
among
all
units:
76.59,
86.39,
92.22%
NH4+,
NO3-,
NO2-,
Statistical
differences
observed
when
comparing
effects
between
HFCW
(p
<
0.05).
Nevertheless,
84.15%
orthophosphate
was
successfully
removed
introduction
baffles
augmented
path
wastewater.
14%
one-day
reduction
area
HRT
noted
relative
types
used
are
suitable
wastewater
treatment.
investigation
type
showed
role
absorption
retention
pollutants.
In
addition,
could
generate
interest
option.
Heliyon,
Journal Year:
2023,
Volume and Issue:
9(1), P. e12921 - e12921
Published: Jan. 1, 2023
Plant
combination
and
rhizobacterial
bioaugmentation
are
the
modification
of
constructed
wetlands
(CWs)
to
promote
detoxification
leachate.
In
this
study,
characterization
leachate
was
carried
out
ensure
maximum
concentration
that
did
not
affect
plant's
growth.
Herein,
identification
leachate-resistant
rhizobacteria
is
used
determine
type
bacteria
resistant
has
potential
for
processing
in
next
step.
The
phytodetoxification
test
by
comparing
addition
without
detox
parameter
Chemical
Oxygen
Demand
(COD),
Biological
(BOD),
Total
Suspended
Solid
(TSS),
Nitrogen
(TN),
Cadmium
(Cd),
Mercury
(Hg).
Results
showed
plants
could
still
live
largest
100%.
were
identified
bioaugmented
reactor
Bacillus
cereus,
Nitrosomonas
communis,
Pseudomonas
aeruginosa.
Phytodetoxification
a
single
plant
efficiency
ranged
between
40%
70%.
can
improve
percentage
COD
80.47%,
BOD
84.05%,
TSS
80.05%,
TN
75.58%,
Cd
99.96%,
Hg
90%.
These
modifications
very
influential
through
uptake
rhizodegradation
processes.
Heliyon,
Journal Year:
2024,
Volume and Issue:
10(13), P. e33284 - e33284
Published: June 18, 2024
Constructed
wetlands
(CWs)
are
systems
designed
to
maximize
pollutants
removal
by
various
mechanisms,
most
of
which
associated
with
the
presence
plants.
However,
substances
secreted
plants
defend
themselves
against
external
aggressions
during
their
growth
very
little
studied
in
these
systems.
This
study
aimed
characterize
chemical
constituents
Pennisetum
purpureum
extracts
used
an
experimental
mesocosm
filled
shale
and
laterite
treating
domestic
wastewater.
Above-ground
biomass,
strain
diameter
secondary
metabolites
P.
grown
on
different
substrates
(shale
laterite)
were
monitored,
as
those
site
(control).
In
addition,
performance
oxygen
demand
(COD),
biochemical
(BOD5),
total
Kjedahl
nitrogen
(TKN)
Total
Phosphorus
(TP)
was
determined
at
outlet
CWs.
Plant
biomass
measured
bed
(13.7
±
0.5
kg
m−2)
higher
than
(12.5
0.1
m−2),
both
lower
obtained
natural
environment
(14.9
0.6
m−2).
Performances
ranged
from
83
5.4
76.9
7
%
84.7
6.8
78
8.1
72.2
10.7
55.5
16.4
(NTK)
72.4
4.9
58.4
3.4
(TP),
efficiencies
shale-filled
bed.
richer
(total
polyphenol
[73.5
mgEAG/gMS],
flavonoids
[18.1
mgEQ/gMS]
condensed
tannin
[13.3
mgEC/gMS])
more
(57.7
mgEAG/gMS),
(12.1
mgEQ/gMS)
(12
mgEC/gMS)
laterite-filled
short,
wastewater
filtration
materials
have
influence
secretion
plant
metabolites.
two
materials,
seems
be
better
suited
CWs,
it
promotes
close
environment.
