Hybrid Constructed Wetlands for Tertiary Treatment of Poultry Slaughter Wastewater to Meet Quality Standards of Discharge and Reuse: A Full-Scale Case Study in Vietnam
Abstract
The
construction
and
operation
of
a
small-scale
hybrid
constructed
wetland
(HCW)
system
for
tertiary
wastewater
treatment
was
presented.
HCW
includes
vertical
sub-surface
flow
CW
(VFCW),
horizontal
(HFCW)
free
water
surface
(FWSCW)
operated
in
series
had
total
area
150
m2.
It
received
7.5
m3/day
secondary
effluent
from
the
existing
poultry
slaughter
enterprise
at
production
capacity
500
ducks
per
day
an
on-site
experiment
12
months.
results
showed
that
removal
efficiencies
biological
oxygen
demand
(BOD5),
chemical
(COD),
suspended
solids
(TSS),
ammonia
nitrogen
(NH4+-N),
nitrate
(NO3--N),
(TN),
orthophosphate
(PO43--P),
phosphorus
(TP),
Escherichia
coli
(E.
coli)
coliforms
(T.
reached
average
values
76.2,
78.7,
77.1,
83.9,
86.3,
84.9,
72.3,
73.9,
98.9
96.4%,
respectively,
while
concentrations
study
complied
with
most
difficult
limits
not
only
discharge
into
receiving
source
but
also
reusing
to
plants.
function
made
by
various
configurations
such
as
VFCW,
HFCW
FWSCW
placed
sequentially
proved
crucial
treat
make
it
reusable.
Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown
Published: Oct. 15, 2024
Language: Английский