Afyon Kocatepe University Journal of Sciences and Engineering,
Journal Year:
2024,
Volume and Issue:
24(4), P. 1005 - 1018
Published: July 23, 2024
Wastewater
treatment
plants
(WWTPs)
are
considered
as
one
of
the
most
important
point
sources
for
releasing
antibiotics
into
natural
environment.
In
this
study,
occurrence,
fate,
and
removal
three
antibiotics,
ciprofloxacin
(CIP),
sulfamethoxazole
(SMX),
azithromycin
(AZI),
belong
to
quinolone,
sulfonamide,
macrolide
groups,
respectively
were
investigated
seasonally
in
a
large-scale
urban
WWTP.
While
occurrence
concentrations
raw
wastewater
found
between
about
0.26
0.73
μg/L
summer
season,
it
was
determined
range
approximately
0.41
4.6
winter
season.
Although
efficiencies
obtained
pre-treatment
stage
studied
advanced
biological
WWTP
not
very
high,
treated
compound
CIP
(up
23.8%).
Total
varied
mainly
based
on
At
same
time,
also
changed
considerably
depending
seasons.
Among
all
antibiotic
compounds,
that
AZI
least
affected
by
seasons
terms
total
efficiency
According
annual
average
efficiencies,
SMX
(25.7%),
(71.3%),
(89.2%)
poorly,
moderately,
highly
WWTP,
respectively.
However,
be
insufficient
complete
antibiotics.
Toxics,
Journal Year:
2024,
Volume and Issue:
12(5), P. 309 - 309
Published: April 24, 2024
Effluent
discharged
from
urban
wastewater
treatment
plants
(WWTPs)
is
a
major
source
of
emerging
contaminants
(ECs)
requiring
effective
regulation.
To
this
end,
we
collected
discharge
datasets
pharmaceuticals
(PHACs)
and
endocrine-disrupting
chemicals
(EDCs),
representing
two
primary
categories
ECs,
Chinese
WWTP
effluent
2012
to
2022
establish
an
exposure
database.
Moreover,
high-risk
ECs’
long-term
water
quality
criteria
(LWQC)
were
derived
using
the
species
sensitivity
distribution
(SSD)
method.
A
total
140
ECs
(124
PHACs
16
EDCs)
identified,
with
concentrations
ranging
N.D.
(not
detected)
706
μg/L.
Most
data
concentrated
in
coastal
regions
Gansu,
high
ecological
risk
observed
Hebei,
Shandong,
Guangdong,
Hong
Kong.
Using
assessment
factor
(AF)
method,
18
regulation
identified.
However,
only
three
them,
namely
carbamazepine,
ibuprofen,
bisphenol-A,
met
derivation
requirements
SSD
The
LWQC
for
these
determined
as
96.4,
1010,
288
ng/L,
respectively.
Exposure
carbamazepine
bisphenol-A
surpassed
their
LWQC,
indicating
need
heightened
attention
contaminants.
This
study
elucidates
occurrence
risks
WWTPs
provides
theoretical
foundations
EC
management
sewage
facilities.
