Frontiers in Microbiology,
Journal Year:
2022,
Volume and Issue:
13
Published: April 5, 2022
A
METland
is
an
innovative
treatment
wetland
(TW)
that
relies
on
the
stimulation
of
electroactive
bacteria
(EAB)
to
enhance
degradation
pollutants.
The
designed
in
a
short-circuit
mode
(in
absence
external
circuit)
using
electroconductive
bed
capable
accepting
electrons
from
microbial
metabolism
Although
METlands
are
proven
be
highly
efficient
removing
organic
pollutants,
study
situ
EAB
activity
full-scale
systems
challenge
due
two-electrode
configuration.
For
first
time,
four
independent
were
tested
for
removal
pollutants
and
nutrients,
establishing
correlation
with
response
generated
by
presence
EAB.
efficiency
was
enhanced
plants
mixed
oxic-anoxic
conditions,
average
56
g
chemical
oxygen
demand
(COD)
mbed
material-3
day-1
2
total
nitrogen
(TN)
Ørby
(partially
saturated
system).
estimated
electron
current
density
(J)
provides
evidence
its
relationship
matter.
reached
max.
values
188.14
mA
m-2
(planted
system;
IMDEA
1),
223.84
(non-planted
2),
125.96
(full
123.01
2).
These
flow
remarkable
not
energy
harvesting
unequivocally
show
how
circulate
even
system.
relation
between
load
rate
(OLR)
at
inlet
coulombic
(CE;
%)
showed
decreasing
trend,
ranging
8.8
53%
(OLR
2.0
16.4
COD
day-1)
0.8
2.5%
41.9
45.6
systems.
This
pattern
denotes
complex
mixtures
such
as
real
wastewater
high
variable
OLR
should
necessarily
result
CE
values.
technology
validated
solution
treating
decentralized
locations.
Water,
Journal Year:
2020,
Volume and Issue:
12(6), P. 1744 - 1744
Published: June 18, 2020
The
review
aims
to
report
the
state-of-the-art
constructed
wetlands
(CW)
in
Latin
America
and
Caribbean
(LAC)
region
not
limited
national
local
conditions.
aim
is
with
a
broader
view,
bring
updated
sufficient
information,
facilitate
use
of
CW
technology
different
countries
LAC.
Thus,
520
experiences
extracted
from
169
reviewed
documents
20
were
analyzed.
According
data,
horizontal
subsurface
flow
are
most
reported
(62%),
second
common
free
water
surface
(17%),
then
vertical
systems
(9%),
followed
by
intensified
(8%),
finally
French
(4%).
performance
for
nutrient
removal
analyzed,
finding
that
mean
Chemical
Oxygen
Demand
(COD),
Total
Nitrogen
(TN),
Phosphorous
(TP)
efficiencies
varies
65%
83%,
55%
72%,
30%
84%,
respectively.
results
suggest
generally
good
COD
TN
removal,
but
low
TP
removal.
Regarding
plant
species
used
CWs,
114
reported,
being
until
now
extensive
about
CWs
LAC
region.
Water,
Journal Year:
2020,
Volume and Issue:
12(4), P. 1188 - 1188
Published: April 21, 2020
This
paper
outlines
recent
advances
in
the
design,
application,
and
operations
maintenance
(O&M)
of
aerated
treatment
wetland
systems
as
well
current
research
trends.
We
provide
first-ever
comprehensive
estimate
number
geographical
distribution
wetlands
worldwide
review
new
developments
design
application.
also
presents
discusses
first-hand
experiences
challenges
with
O&M
full-scale
systems,
which
is
an
important
aspect
that
currently
not
reported
literature.
Knowledge
gaps
suggestions
for
future
on
are
provided.
Water,
Journal Year:
2021,
Volume and Issue:
13(17), P. 2352 - 2352
Published: Aug. 27, 2021
A
framework
developed
by
the
COST
Action
Circular
City
(an
EU-funded
network
of
500+
scientists
from
40+
countries;
=
Cooperation
in
Science
and
Technology)
for
addressing
Urban
Circularity
Challenges
(UCCs)
with
nature-based
solutions
(NBSs)
was
analyzed
various
urban
sectors
which
refer
to
different
fields
activities
circular
management
resources
cities
(i.e.,
reducing
use
production
waste).
The
comprise
built
environment,
water
management,
resource
recovery,
farming.
We
present
main
findings
sector
analyses,
discuss
perspectives,
show
ways
overcome
these
differences.
results
reveal
potential
NBSs
address
multiple
sectors,
as
well
UCCs.
While
has
been
identified
a
key
element
when
using
most
are
interconnected
also
secondary
benefits
other
resources.
Using
representative
examples,
we
how
holistic
systemic
approach
could
facilitate
cities.
Currently,
there
is
often
disciplinary
focus
on
one
applying
NBSs.
full
multifunctionality
is,
thus,
usually
not
fully
accounted
for.
On
basis
our
results,
conclude
that
experts
disciplines
can
engage
cross-sectoral
exchange
identify
recover
provide
improve
livelihood
locals.
This
an
important
first
step
toward
enabling
Sustainability,
Journal Year:
2023,
Volume and Issue:
15(10), P. 8145 - 8145
Published: May 17, 2023
In
Central
and
Eastern
Europe,
about
one-third
of
the
population
lives
in
small
settlements
(<2000
PE).
Since
current
European
Urban
Wastewater
Treatment
Directive
(91/271/EEC)
does
not
clearly
regulate
collection
treatment
wastewater
from
these
settlements,
countries
solve
problem
individually.
Simple
robust
technologies
such
as
nature-based
systems
could
be
solution
are
widely
applied
many
EU
countries.
this
paper,
status
collection,
treatment,
reuse
rural
areas
14
Europe
is
presented
together
with
spread
different
systems.
The
results
show
that
last
decade,
connection
to
plants
has
increased
9%
19%
total
settlements.
use
treated
water
rarely
applied.
Sequencing
batch
reactors
other
types
activated
sludge
predominate
technologies.
Nature-based
(mainly
wetlands)
used
all
studied.
Their
implementation
slowly
increasing,
hampered
by
lack
acceptance
authorities,
good
case
studies,
misdesigned
or
misoperated
examples
past.
More
awareness,
formalized
training
on
systems,
supportive
legislation
needed
promote
sustainable
sanitation
solutions
Resources Conservation and Recycling,
Journal Year:
2023,
Volume and Issue:
199, P. 107248 - 107248
Published: Oct. 21, 2023
To
preserve
and
restore
water
ecosystems,
China
has
implemented
increasingly
stringent
emissions
standards
(Weak,
Moderate,
Ambitious)
for
wastewater
treatment
plants
constructed
wetlands
(CWs)
are
an
effective
means
of
improving
tailwater
standards.
We
used
Life
Cycle
Assessment
Costing
models
to
quantify
the
economic
environmental
costs
benefits
upgrading
drainage
through
CW
8054
WWTPs
in
China,
calculated
their
benefit–cost
ratios
(BCR).
Two
land-use
scenarios
were
considered
according
whether
cultivated
land
was
eligible
use
by
CWs.
The
construction
phase
greatest
contributor
both
impact
cost.
BCR
3.53,
2.49,
2.39
when
ineligible
3.13,
2.16,
2.20
eligible.
This
provides
evidence
base
decision-makers
select
appropriate
emission
include
planning