Water Science & Technology,
Год журнала:
2024,
Номер
90(10), С. 2747 - 2763
Опубликована: Ноя. 15, 2024
ABSTRACT
Wastewater
treatment
plants
(WWTPs)
comprise
energy-intensive
processes,
serving
as
primary
contributors
to
overall
WWTP
costs.
This
research
study
proposes
a
novel
approach
that
integrates
support
vector
regression
(SVR)
with
the
firefly
algorithm
(FFA)
for
prediction
of
energy
consumption
in
Chlef
City,
Algeria.
The
database
comprises
comprehensive
set
1,653
samples,
capturing
diverse
information
categories.
It
includes
chemical
and
physical
characteristics,
encompassing
oxygen
demand,
5-day
biochemical
potential
hydrogen,
water
temperature,
total
suspended
sediment
basin,
influent
N-NH3
concentration,
number
aerators,
operating
time.
Additionally,
hydraulic
energy-related
parameters
are
represented
by
flow
entered
at
station
consumed
respectively.
Finally,
meteorological
data,
comprising
rainfall,
relative
humidity,
aridity
index,
part
dataset
required
analysis.
In
this
regard,
15
different
models
correspond
combinations
input
assessed
study.
results
show
SVR–FFA-15
can
render
an
improvement
accuracy
WWTPs.
provides
useful
tool
managing
wastewater
makes
insightful
recommendations
future
savings.
Water Science & Technology,
Год журнала:
2024,
Номер
90(10), С. 2813 - 2841
Опубликована: Ноя. 12, 2024
ABSTRACT
This
study
proposes
a
novel
approach
for
predicting
variations
in
water
quality
at
wastewater
treatment
plants
(WWTPs),
which
is
crucial
optimizing
process
management
and
pollution
control.
The
model
combines
convolutional
bi-directional
gated
recursive
units
(CBGRUs)
with
adaptive
bandwidth
kernel
function
density
estimation
(ABKDE)
to
address
the
challenge
of
multivariate
time
series
interval
prediction
WWTP
quality.
Initially,
wavelet
transform
(WT)
was
employed
smooth
data,
reducing
noise
fluctuations.
Linear
correlation
coefficient
(CC)
non-linear
mutual
information
(MI)
techniques
were
then
utilized
select
input
variables.
CBGRU
applied
capture
temporal
correlations
series,
integrating
Multiple
Heads
Attention
(MHA)
mechanism
enhance
model's
ability
comprehend
complex
relationships
within
data.
ABKDE
employed,
supplemented
by
bootstrap
establish
upper
lower
bounds
intervals.
Ablation
experiments
comparative
analyses
benchmark
models
confirmed
superior
performance
point
prediction,
analysis
forecast
period,
fluctuation
detection
Also,
this
verifies
broad
applicability
robustness
anomalous
contributes
significantly
improved
effluent
efficiency
control
WWTPs.
Fermentation,
Год журнала:
2025,
Номер
11(3), С. 130 - 130
Опубликована: Март 7, 2025
This
study
provides
a
comparative
evaluation
of
several
ensemble
model
constructions
for
the
prediction
specific
methane
yield
(SMY)
from
anaerobic
digestion.
From
authors’
knowledge
based
on
existing
research,
present
their
accuracy
and
utilization
in
digestion
modeling
relative
to
individual
machine
learning
methods
is
incomplete.
Three
input
datasets
compiled
samples
using
agricultural
forestry
lignocellulosic
residues
previous
studies
were
used
this
study.
A
total
six
five
evaluated
per
dataset,
whose
was
assessed
robust
10-fold
cross-validation
100
repetitions.
Ensemble
models
outperformed
one
out
three
terms
accuracy.
They
also
produced
notably
lower
coefficients
variation
root-mean-square
error
(RMSE)
than
most
accurate
(0.031
0.393
dataset
A,
0.026
0.272
B,
0.021
0.217
AB),
being
much
less
prone
randomness
training
test
data
split.
The
optimal
generally
benefited
higher
number
included,
as
well
diversity
principles.
Since
reporting
final
fitting
single
split-sample
approach
highly
randomness,
adoption
multiple
repetitions
proposed
standard
future
studies.
Water Environment Research,
Год журнала:
2024,
Номер
96(10)
Опубликована: Сен. 25, 2024
Abstract
This
study
investigates
the
use
of
machine
learning
(ML)
models
for
wastewater
treatment
plant
(WWTP)
sludge
predictions
and
explainable
artificial
intelligence
(XAI)
techniques
understanding
impact
variables
behind
prediction.
Three
ML
models,
random
forest
(RF),
gradient
boosting
(GBM),
tree
(GBT),
were
evaluated
their
performance
using
statistical
indicators.
Input
variable
combinations
selected
through
different
feature
selection
(FS)
methods.
XAI
employed
to
enhance
interpretability
transparency
models.
The
results
suggest
that
prediction
accuracy
depends
on
choice
model
number
variables.
found
be
effective
in
interpreting
decisions
made
by
each
model.
provides
an
example
production
applying
understand
factors
influencing
it.
Understandable
interpretation
can
facilitate
targeted
interventions
process
optimization
improve
efficiency
sustainability
processes.
Practitioner
Points
Explainable
play
a
crucial
role
promoting
trust
between
real‐world
applications.
Widely
practiced
used
predict
United
States
plant.
Feature
methods
reduce
required
input
without
compromising
accuracy.
explain
driving