Heliyon,
Год журнала:
2024,
Номер
10(9), С. e30455 - e30455
Опубликована: Май 1, 2024
Climate
change-induced
saline
intrusion
into
both
surface
and
groundwater,
extreme
weather
events,
unregulated
water
usage
are
serious
threats
to
the
drinking
supply
in
coastal
areas
worldwide,
especially
least-developed
countries.
This
research
developed
a
data-driven
decision-making
methodology
evaluate
performance
of
rainwater
harvesting
(RWH)
systems
saline-prone
southwestern
region
Bangladesh.
Twenty-five
community
managed
RWH
systems,
recently
piloted
two
major
districts,
were
considered
case
study
develop
validate
this
evaluation
tool.
The
integrates
daily
models,
lifetime
cost
analysis,
Geographic
Information
System
(GIS)-based
parameters
supported
by
Analytical
Hierarchy
Process
(AHP),
field
observation.
While
meteorological
as
well
hydrological
economic
found
be
highly
suitable,
36%
showed
moderate
performance,
challenges
remain
ensuring
proper
operation
maintenance
practices
at
level.
However,
40%
high
with
showing
very
suitability,
which
suggests
sustainable
adaptation
for
supply.
Biogeochemistry,
Год журнала:
2021,
Номер
154(2), С. 255 - 292
Опубликована: Апрель 12, 2021
Abstract
Freshwater
salinization
is
an
emerging
global
problem
impacting
safe
drinking
water,
ecosystem
health
and
biodiversity,
infrastructure
corrosion,
food
production.
originates
from
diverse
anthropogenic
geologic
sources
including
road
salts,
human-accelerated
weathering,
sewage,
urban
construction,
fertilizer,
mine
drainage,
resource
extraction,
water
softeners,
saltwater
intrusion,
evaporative
concentration
of
ions
due
to
hydrologic
alterations
climate
change.
The
complex
interrelationships
between
salt
chemical,
biological,
parameters
consequences
on
the
natural,
social,
built
environment
are
called
Salinization
Syndrome
(FSS).
Here,
we
provide
a
comprehensive
overview
issues
(past,
present,
future),
investigate
drivers
solutions.
We
analyze
expanding
magnitude
scope
FSS
its
discovery
in
humid
regions,
connections
weathering
mobilization
‘chemical
cocktails.’
also
present
data
illustrating:
(1)
increasing
trends
ion
concentrations
some
world’s
major
freshwaters,
critical
supplies;
(2)
decreasing
nutrient
rivers
regulations
but
salinization,
which
have
been
lack
adequate
management
regulations;
(3)
regional
atmospheric
deposition
storage
soils
groundwater,
(4)
applications
specific
conductance
as
proxy
for
tracking
groups
elements
freshwaters.
prioritize
research
needs
related
better
understanding:
effects
intrusion
processes,
potential
risks
groundwater
contamination
home
wells,
clean
sources,
economic
safety
impacts
(5)
alteration
biodiversity
functions,
(6)
application
high-frequency
sensors
state-of-the
art
monitoring
management.
evaluate
solutions
using
watershed
approach
spanning
air,
land,
explore
variations
fate
transport
different
(
e.g.
ions,
stormwater
management,
remediation,
managing
runoff).
identify
tradeoffs
approaches
such
unanticipated
retention
release
chemical
cocktails
best
practices
(BMPs)
unintended
alternative
deicers
quality.
Overall,
show
that
has
direct
indirect
metals,
nutrients,
organics,
radionuclides
freshwaters
with
mounting
impacts.
Our
review
suggests
what
could
happen
if
were
not
managed
into
future
evaluates
strategies
reducing
human
health,
costly
infrastructure,
services.
Heliyon,
Год журнала:
2021,
Номер
7(2), С. e06107 - e06107
Опубликована: Фев. 1, 2021
River
water
is
very
much
important
for
domestic,
agriculture
and
industrial
use
in
Bangladesh
which
critical
condition
from
long
time
based
on
research
data.
During
last
40
years,
extreme
pollution
events
occurred
peripheral
rivers
surrounding
Dhaka
city
Karnaphuli
Chittagong
city.
Present
data
showed
that
other
urban
are
also
especially
Korotoa,
Teesta,
Rupsha,
Pashur
Padma.
The
pollutants
flowing
with
made
a
severe
downstream
areas
of
rivers.
Metals
concentrations
river
was
found
to
be
higher
dry
season.
Dissolve
oxygen
(DO)
nearly
zero
Buriganga
several
points
Turag,
Balu,
Sitalakhya
River.
NO3-,
NO2-
PO43-
different
Zn,
Cu,
Fe,
Pb,
Cd,
Ni,
Mn,
As
Cr
concentration
above
drinking
standard
most
the
some
metals
even
irrigation
Sediment
metal
Karnaphuli,
Rupsha
Meghna
Metal
sediment
US
EPA
threshold
value
fish
agricultural
crops
bioaccumulations
had
occurred.
trend
like:
water
Groundwater for Sustainable Development,
Год журнала:
2023,
Номер
23, С. 101049 - 101049
Опубликована: Ноя. 1, 2023
Groundwater
plays
a
pivotal
role
as
global
source
of
drinking
water.
To
meet
sustainable
development
goals,
it
is
crucial
to
consistently
monitor
and
manage
groundwater
quality.
Despite
its
significance,
there
are
currently
no
specific
tools
available
for
assessing
trace/heavy
metal
contamination
in
groundwater.
Addressing
this
gap,
our
research
introduces
an
innovative
approach:
the
Quality
Index
(GWQI)
model,
developed
tested
Savar
sub-district
Bangladesh.
The
GWQI
model
integrates
ten
water
quality
indicators,
including
six
heavy
metals,
collected
from
38
sampling
sites
study
area.
enhance
precision
assessment,
employed
established
machine
learning
(ML)
techniques,
evaluating
model's
performance
based
on
factors
such
uncertainty,
sensitivity,
reliability.
A
major
advancement
incorporation
metals
into
framework
index
model.
best
authors
knowledge,
marks
first
initiative
develop
encompassing
heavy/trace
elements.
Findings
assessment
revealed
that
area
ranged
'good'
'fair,'
indicating
most
indicators
met
standard
limits
set
by
Bangladesh
government
World
Health
Organization.
In
predicting
scores,
artificial
neural
networks
(ANN)
outperformed
other
ML
models.
Performance
metrics,
root
mean
square
error
(RMSE),
(MSE),
absolute
(MAE)
training
(RMSE
=
0.361;
MSE
0.131;
MAE
0.262),
testing
0.001;
0.00;
0.001),
prediction
evaluation
statistics
(PBIAS
0.000),
demonstrated
superior
effectiveness
ANN.
Moreover,
exhibited
high
sensitivity
(R2
1.0)
low
uncertainty
(less
than
2%)
rating
These
results
affirm
reliability
novel
monitoring
management,
especially
regarding
metals.
