Abstract.
Problems
of
water
system
integration
occur
when
a
model’s
boundaries
are
too
narrow
to
capture
interactions
and
feedbacks
across
the
cycle.
We
propose
that
integrated
systems
models
required
overcome
them,
necessary
understand
emergent
behaviour,
expand
model
boundaries,
evaluate
interventions,
ensure
simulations
reflect
stakeholder
goals.
present
Water
Systems
Integrated
Modelling
Framework
(WSIMOD)
software
as
one
such
approach
describe
its
theoretical
basis,
covering
node
arc
nature
simulations,
framework
enables
communication
between
elements,
orchestration
customise
interactions.
highlight
data
requirements
for
creating
potential
future
development
refinement.
WSIMOD
offers
flexible
powerful
represent
systems,
we
hope
it
will
encourage
further
research
application
into
using
towards
achieving
sustainable
resilient
management.
Scientific Reports,
Journal Year:
2024,
Volume and Issue:
14(1)
Published: Aug. 5, 2024
Urban
runoff
appears
to
be
a
pathway
for
transferring
new
emerging
pollutants
from
land-based
sources
the
aquatic
environment.
This
paper
aimed
identify
and
describe
groups
of
present
in
rainwater
surface
as
well
their
mixture
with
wastewater
combined
sewer
system
urbanized
catchments
determine
correlations
between
these
pollutants.
Four
leading
have
been
identified
that
may
municipal
mixtures.
The
samples
were
tested
microplastics,
phthalic
acid
esters,
pesticides,
polycyclic
aromatic
hydrocarbons
basic
parameters.
pilot
site
was
Słupsk
(northwestern
Poland).
We
conducted
nine
sampling
campaigns
at
three
points.
results
study
revealed
(i)
not
samples;
(ii)
selected
organochlorine
pesticides
detected
during
one
campaign
dry
season
therefore
critical
importance;
(iii)
out
11
analyzed
five
substances
released
commonly
used
plastic
products
present;
(iv)
number
microplastics
contained
ranged
1,400
14,036
pcs/L
even
occurred
pure
rainfall.
Chemosphere,
Journal Year:
2024,
Volume and Issue:
366, P. 143526 - 143526
Published: Oct. 1, 2024
Per
and
polyfluoroalkyl
substances
(PFAS)
their
degradation
products
are
a
concern
to
human
ecosystem
health.
Wastewater
treatment
plants
not
efficient
at
removing
PFAS
compounds
thought
be
major
source
of
these
marine
environments.
The
sewerage
infrastructure
in
the
UK,
has
over
20,000
combined
stormwater
overflows
(CSOs).
These
CSOs
relief
values
whereby
untreated
wastewater
can
discharge
under
permit
from
Environment
Agency
with
exceptional
rain/snowfall
conditions.
discharged
3.6
million
monitored
hours
into
English
rivers
coasts
2023.
Concerns
have
been
raised
about
proximity
CSO
discharges
highly
protected
habitats.
This
study
is
first
determine
that
concentrations
elevated
bay
(Langstone
Harbour,
England)
following
recent
sewage
releases
compared
an
extended
period
without
discharge.
Analysis
was
carried
out
suite
54
which
only
one
(PFHpA)
detectable
above
LOD
prior
but
8
afterwards.
included
banned
PFOS
(Linear
Branched
8.6
ng/L
∓
0.90)
PFOA
(2.9
0.29)
were
annual
average
EQS
for
inland
'other'
surface
waters.
Most
detected
doubled
concentration
LODs.
two-fold
increases
we
discuss
likely
conservative
estimates
based
on
use
LODs
tidal
Additional
Oysters
(Crassostrea
gigas)
Seaweed
(Fucus
vesiculosus)
taken
revealing
high
shorter
chain
PFBA
(6.99μg/kg
2.42
ww)
seaweed
samples.
seaweeds
calculated
bioaccumulation
factors
(BAF)
>
6000
indicating
algae
might
important
reservoir
some
contamination.
We
results
context
largescale
nationally
globally,
call
upon
need
better
understanding
transfer
contaminants
food
chains.
PLoS ONE,
Journal Year:
2024,
Volume and Issue:
19(11), P. e0312157 - e0312157
Published: Nov. 6, 2024
Wastewater
treatment
plants
(WWTPs)
receive
wastewater
from
various
sources.
Despite
aiming
to
remove
contaminants,
microplastics
persist.
Plastic
surfaces
are
quickly
colonized
by
microbial
biofilm
(“plastispheres”).
Plastisphere
communities
suggested
promote
the
spread
and
survival
of
potential
human
pathogens,
suggesting
that
transfer
plastispheres
environment
could
pose
a
risk
environmental
health.
The
study
aimed
identify
pathogens
in
plastispheres,
specifically
food-borne
addition
characterizing
taxonomic
diversity
composition
plastispheres.
Plastispheres
accumulated
on
polypropylene
(PP),
polyvinyl
chloride
(PVC),
high-density
polyethylene
propylene
(HDPE)
exposed
raw
treated
were
analyzed
via
cultivation
methods,
quantitative
reverse
transcription
PCR
(RT‒qPCR)
16S
rRNA
amplicon
sequencing.
RT‒qPCR
revealed
presence
foodborne
pathogenic
bacteria
viruses,
such
as
Listeria
monocytogenes
,
Escherichia
coli
norovirus,
adenovirus.
Viable
isolates
emerging
species
Klebsiella
pneumoniae
Acinetobacter
spp.
identified
wastewater,
indicating
might
survive
during
treatment.
These
findings
underscore
harbor
disseminate
species,
posing
challenges
water
reuse
initiatives.
explored
through
sequencing,
significantly
influenced
duration
time
plastic
spent
wastewater.
In
contrast,
specific
material
did
not
influence
bacterial
composition,
while
was
affected.
Without
efficient
proper
waste
management,
act
source
transferring
plastic-associated
into
food
chain
possibly
threat
Continued
research
innovation
essential
improve
removal
associated
microorganisms
Environmental Research,
Journal Year:
2023,
Volume and Issue:
244, P. 117945 - 117945
Published: Dec. 16, 2023
Pollution
from
Combined
Sewer
Overflows
(CSOs)
cause
diffuse
environmental
problems,
which
are
still
not
satisfactorily
addressed
by
current
management
practices.
In
this
study,
a
sensitivity
analysis
was
conducted
on
several
CSO
impact
indicators,
with
respect
to
parameters
that
characterise
climate,
urban
catchment
and
the
structure
activation
threshold.
The
running
10000
simulations
Storm
Water
Management
Model,
using
simplified
modelling
approach.
indicators
were
calculated
at
yearly
scale
evaluate
overall
potential
effects
water
bodies.
results
could
be
used
estimate
pollution
load
ranges,
known
values
of
input
parameters,
investigate
suitable
strategies
reduce
receiving
percentage
impervious
surface
found
most
influent
parameter
all
its
reduction
can
contain
discharged
pollutant
mass.
threshold,
instead,
resulted
second
least
suggesting
regulation
alone
would
strategy
pollution.
However,
along
imperviousness,
increase
effectively
decrease
concentration
in
overflow.
also
indicate
neither
adopting
sustainable
drainage
practices,
nor
interventions
device,
significantly
affect
frequency
overflows.
Therefore,
restricting
latter
ineffective
for
both
mass
Sustainability,
Journal Year:
2024,
Volume and Issue:
16(23), P. 10595 - 10595
Published: Dec. 3, 2024
The
current
treatment
of
wastewater
has
unintended
negative
environmental
impacts.
Conventional
methods
frequently
involve
the
use
harmful
chemicals,
generate
disinfectant
by-products,
consume
significant
amounts
energy,
and
produce
wastes
requiring
additional
efforts
for
safe
disposal.
Water
stress
exacerbated
by
contaminants
emerging
concern
(CECs)
climate
change,
is
further
straining
aging
systems.
A
slow
sand
filter
(SSF),
with
ligno-cellulosic
layers,
offers
a
novel,
promising,
economic
alternative
reclamation.
This
review
examines
key
SSF
characteristics,
obtained
from
recent
studies,
explores
sustainable
materials
such
as
ligno-cellulose,
companion.
optimal
design
includes
bed
depth
>0.6
m,
particle
effective
size
(D10)
between
0.15
mm
0.40
mm,
uniformity
coefficient
(CU
grain
ratio)
≤2.0.
It
established
that
SSF’s
characteristic
biolayer
microorganisms
enhances
contaminant
removal
via
biodegradation.
While
biofilm-based
micropollutants
proven
mechanism,
research
needed
to
address
CEC
challenges.
For
example,
inclusion
sawdust
in
layers
can
reduce
energy
consumption
compared
conventional
be
recycled
through
thermal
conversion,
aligning
circular
economy
principles.
approach
potential
improve
economies,
contributing
achievement
UN
Sustainability
Goals.
Research Square (Research Square),
Journal Year:
2024,
Volume and Issue:
unknown
Published: March 6, 2024
Abstract
Sewage
discharges
to
aquatic
environments
present
a
real
danger
human
and
ecosystem
health.
Event
duration
monitors
(EDMs)
from
combined
stormwater
overflows
(CSOs)
are
now
fitted
over
90%
of
storm
in
England
Wales.
These
have
transformed
our
understanding
consented
non-consented
sewage
wastewater
UK
water
companies.
In
2018,
Southern
Water
Services
Ltd
launched
“Beachbuoy”
which
is
an
online
‘near’
real-time
platform
inform
customers
when
EDMs
been
activated
at
particular
CSOs
bathing
sites.
Since
April
2022,
this
company
categoried
CSO
as
genuine,
genuine
but
non-impacting,
not
(false
alarms
by
EDMs).
We
analyzed
Beachbuoy
data
provide
overview
EDM
activity
performance
the
region.
Across
all
assets,
between
December
2020
February
2023
there
were
7,164,656
(impacting
non-impacting)
minutes
19%
overall
regarded
non-impacting
locations.
Non-impacting
assets
often
persisted
beyond
multiple
tidal
cycles
suggesting
impacts
on
waters
may
need
be
reevaluated.
Discharges
classed
‘not
genuine’
alarms)
highly
variable
for
some
recorded
false
100%
time.
There
very
strong
correlations
triggering
time
day.
Overall,
39%
total
discharged
14%
if
discharge
events
classified
genuine.
releases
more
likely
happen
7-10
am
indicating
that
earlier
morning
patterns
behaviours
substantially
impacting
infrastructure's
ability
tackle
increased
capacity
system
through
precipitation.
discuss
appropriateness
classifying
‘non-impacted’
whether
should
also
obtained
negative
(EDMs
activating)
well
positive
(not
genuine).
call
better
regulation
how
information
presented
public.
Abstract.
Problems
of
water
system
integration
occur
when
a
model’s
boundaries
are
too
narrow
to
capture
interactions
and
feedbacks
across
the
cycle.
We
propose
that
integrated
systems
models
required
overcome
them,
necessary
understand
emergent
behaviour,
expand
model
boundaries,
evaluate
interventions,
ensure
simulations
reflect
stakeholder
goals.
present
Water
Systems
Integrated
Modelling
Framework
(WSIMOD)
software
as
one
such
approach
describe
its
theoretical
basis,
covering
node
arc
nature
simulations,
framework
enables
communication
between
elements,
orchestration
customise
interactions.
highlight
data
requirements
for
creating
potential
future
development
refinement.
WSIMOD
offers
flexible
powerful
represent
systems,
we
hope
it
will
encourage
further
research
application
into
using
towards
achieving
sustainable
resilient
management.
Abstract.
Problems
of
water
system
integration
occur
when
a
model’s
boundaries
are
too
narrow
to
capture
interactions
and
feedbacks
across
the
cycle.
We
propose
that
integrated
systems
models
required
overcome
them,
necessary
understand
emergent
behaviour,
expand
model
boundaries,
evaluate
interventions,
ensure
simulations
reflect
stakeholder
goals.
present
Water
Systems
Integrated
Modelling
Framework
(WSIMOD)
software
as
one
such
approach
describe
its
theoretical
basis,
covering
node
arc
nature
simulations,
framework
enables
communication
between
elements,
orchestration
customise
interactions.
highlight
data
requirements
for
creating
potential
future
development
refinement.
WSIMOD
offers
flexible
powerful
represent
systems,
we
hope
it
will
encourage
further
research
application
into
using
towards
achieving
sustainable
resilient
management.
Water,
Journal Year:
2024,
Volume and Issue:
16(13), P. 1916 - 1916
Published: July 5, 2024
Modeling
sanitary
sewer
overflow
(SSO)
discharges
based
on
flows
measured
at
pumping
stations
presents
specific
challenges
distinct
from
modeling
combined
(CSO)
and
is
insufficiently
studied.
This
paper
a
methodology
aimed
reducing
assessing
the
uncertainty
in
SSO
estimation.
Four
lumped
models
are
compared:
time–area
curve,
linear
reservoir,
Clark,
simplified
numerical
using
SWMM.
Clark’s
model
delivers
best
results,
with
very
reasonable
estimates.
Although
SWMM
also
provides
good
estimates,
factors
such
as
determinism
weir
crest
height
potential
storage
network
introduce
additional
uncertainties
errors.
The
attenuation
of
hydrographs
mains
leads
to
an
underestimation
both
catchment
area
discharges,
which
depends
pump
operating
frequency
requires
further
evaluation.
maximum
flow
rate
threshold
allowed
for
station
key
parameter
volume;
its
influence
evaluated
detail.
can
be
used
assess
unknown
overflows
upstream
monitored
weirs,
it
estimates
total
occurring
catchment.
results
applying
this
two
contrasting
paradigmatic
discussed.
Water Research,
Journal Year:
2024,
Volume and Issue:
268, P. 122733 - 122733
Published: Nov. 1, 2024
Flushed
wet
wipes
pose
a
significant
pollution
risk
to
river
systems
at
both
macro
and
micro
levels.
However,
the
link
between
their
emissions
environmental
contamination
remains
unclear.
Here
we
integrated
emissions-based
modelling
with
existing
data
on
wipe
disposal
microfibre
generation
predict
quantity
of
entering
transport
pathways
involved.
Results
indicate
that
wastewater
pathways,
including
sewer
overflows,
treatment
plants,
agricultural
runoff,
are
major
conduits
for
these
pollutants.
Despite
advanced
treatment,
substantial
still
enter
environment.
Extrapolating
larger
scales
reveals
as
an
international
issue
requiring
urgent
attention.
This
research
offers
comprehensive
framework
applicable
various
pollutants,
providing
valuable
insights
policymakers
water
industry.
Improved
disposal,
fate,
spatially
distributed
necessary
pinpoint
risks
more
accurately.
