Distribution patterns and community assembly processes of eukaryotic microorganisms along an altitudinal gradient in the middle reaches of the Yarlung Zangbo River
Water Research,
Год журнала:
2023,
Номер
239, С. 120047 - 120047
Опубликована: Май 4, 2023
Язык: Английский
Spatiotemporal variations of plankton communities in different water bodies of the Yellow River: Structural characteristics, biogeographic patterns, environmental responses, and community assembly
Journal of Hydrology,
Год журнала:
2024,
Номер
640, С. 131702 - 131702
Опубликована: Июль 21, 2024
Язык: Английский
Impact analysis of hydraulic loading rate and antibiotics on hybrid constructed wetland systems: Insight into the response to decontamination performance and environmental-associated microbiota
Chemosphere,
Год журнала:
2023,
Номер
347, С. 140678 - 140678
Опубликована: Ноя. 9, 2023
Язык: Английский
Comparative research on nitrogen removal efficiency of two floating bed plants in deep reservoir of southeast hilly region
Journal of Lake Sciences,
Год журнала:
2024,
Номер
36(1), С. 123 - 136
Опубликована: Янв. 1, 2024
为探究东南丘陵山区深水水库中生态浮床技术深度脱氮的效率及管理措施,以大型山谷型深水水库千岛湖为例,选取湿生植物空心菜(Ipomoea
aquatica)和水生植物粉绿狐尾藻(Myriophyllum
aquaticum),采用生态浮床技术,开展了原位模拟实验对比研究,探究不同营养盐浓度和光强下两种植物的生长状况与氮素去除效率。结果发现:(1)空心菜长势受营养盐和光照条件影响明显,添加氮磷后(TN=2.37
mg/L,TP=0.046
mg/L)的空心菜生物量是原位水体(TN=0.66
mg/L,TP=0.028
mg/L)的1.6倍,适当遮光有助于浮床植物生长,40%遮光条件下空心菜的生物量是不遮光条件下的1.5倍;而粉绿狐尾藻生长受营养盐和光照条件影响均较小。(2)空心菜对于水体氮素净化能力显著高于粉绿狐尾藻,在最佳条件下空心菜和粉绿狐尾藻对氮素的去除效率分别达到213.30和44.23
mg/(m2·d)。(3)空心菜去除氮主要以植物同化作用为主,占70%以上TN去除量,40%遮光环境通过明显提升空心菜同化吸收氮量和根系反硝化速率增强了氮的去除能力;粉绿狐尾藻同化吸收和反硝化脱氮作用各占50%左右,以遮光75%下脱氮效果最好。本研究表明,采用生态浮床技术能够强化深水水库的脱氮能力,空心菜更适合在氮浓度较高的水体生长,夏季为空心菜和粉绿狐尾藻浮床分别进行40%和75%的遮光处理将有更好的水质净化效果。因此,在滨岸湿地匮乏的深水水库实施多种植物搭配的生态浮床技术强化水体脱氮作用是一种行之有效的水质改善方法。;To
investigate
the
efficiency
and
management
measures
of
deep
nitrogen
removal
by
ecological
floating
bed
technology
in
deep-water
reservoir
southeast
hilly
region,
hygrophytes
(Ipomoea
aquatica)
aquatic
plants
(Myriophyllum
aquaticum)
were
selected
as
examples
Lake
Qiandaohu,
a
large
valley-type
reservoir.
Their
growth
under
different
nutrient
concentrations
light
intensities
studied
through
in-situ
simulation
experiments
using
technique.
The
results
showed
that:
(1)
I.
aquatica
was
significantly
affected
conditions,
biomass
nutrients
enrichment
(TN=2.37
mg/L,
TP=0.046
mg/L)
1.6
times
higher
than
that
water
body
(TN=0.66
TP=0.028
mg/L),
while
40%
shading
1.5
more
without
shading;
M.
aquaticum
less
either
or
conditions.
(2)
capacity
aquaticum,
with
efficiencies
213.30
mg/(m2·d)
44.23
for
optimal
(3)
Nitrogen
mainly
plant
assimilation,
accounting
70%
total
removal,
best
75%
shading.
enhanced
increased
assimilative
uptake
root
denitrification
rate
aquatica.
For
assimilation
each
accounted
50%
removal.
study
revealed
application
could
strengthen
reservoirs,
which
suitable
bodies
concentrations,
beds
respectively
during
summer
would
have
better
purification
effect.
Therefore,
implementation
variety
to
enhance
where
riparian
wetlands
are
scarce
is
promising
method
improve
quality.
Язык: Английский
The enhancement of wastewater purification efficiency in ecological floating bed aquaculture through alginate oligosaccharide treatment
Aquaculture International,
Год журнала:
2024,
Номер
32(7), С. 9529 - 9546
Опубликована: Июль 30, 2024
Язык: Английский
Research on the Purification Performance of a Floating Island System Treating the Effluent of WWTP Under Different Seasons
Zhaoxu Peng,
Ningqi Niu,
Ting-mei Li
и другие.
Water Air & Soil Pollution,
Год журнала:
2023,
Номер
234(3)
Опубликована: Фев. 21, 2023
Язык: Английский
The microbial community and functional indicators response to flow restoration in gradient in a simulated water flume
Frontiers in Microbiology,
Год журнала:
2022,
Номер
13
Опубликована: Ноя. 17, 2022
Flow
reduction
has
greatly
affected
the
river
ecological
systems,
and
it
attracted
much
attention.
However,
less
attention
been
paid
to
response
flow
restoration,
especially
restoration
in
gradient.
regime
of
rivers
may
affect
functional
indicators
microbial
community
structure.
This
study
simulated
flow-reduced
reach
by
gradiently
controlling
water
explores
environmental
structure
flow.
The
results
showed
that
gross
primary
productivity
(GPP),
ecosystem
respiration
rate
(ER)
some
quality
indices
such
as
chemical
oxygen
demand,
total
nitrogen,
phosphorus
(TP),
exhibited
positive
responses
GPP
ER
increased
600.1%
500.2%,
respectively.
alpha
diversity
significantly
with
a
gradient
restoration.
Thereinto,
Shannon,
Simpson,
Chao1,
Ace
indices,
respectively,
16.4%,
5.6%,
8.6%,
6.2%.
Canonical
correspondence
analysis
indicated
flow,
Dissolved
TP
were
main
influencing
factors
for
changes
bacterial
Microbial
composition
present
reveals
variable
is
discharge,
provides
feasible
scheme
its
Язык: Английский
Effect of alginate oligosaccharide on the efficiency of wastewater purification in ecological floating bed aquaculture
Research Square (Research Square),
Год журнала:
2024,
Номер
unknown
Опубликована: Март 21, 2024
Abstract
In
order
to
investigate
the
effect
of
alginate
oligosaccharide
(AOS)
on
water
purification
efficiency
an
ecological
floating
bed
system
used
in
aquaculture,
spinach
was
cultivated
aquaculture
wastewater
treated
with
varying
concentrations
AOS
(0.025,
0.05,
0.1,
and
0.2
mg/L),
without
serving
as
control
group.
Experimental
results
reveal
that
addition
appropriate
amount
promotes
growth
spinach.
This
is
evident
increased
plant
height,
stem
diameter,
main
root
length,
number
roots,
leaf
area,
aboveground
fresh
weight,
belowground
dry
seedling
index,
chlorophyll
a,
b,
content.
The
combination
0.05
mg/L
exhibits
most
favorable
results,
percentage
increases
various
indicators
were
44.0%,
52.9%,
29.9%,
62.0%,
28.0%,
141.6%,
84.0%,
97.7%,
220.0%,
24.6%,
34.2%,
26.9%
compared
significantly
enhances
removal
turbidity,
chemical
oxygen
demand
(COD),
ammonia
nitrogen
(NH
4
+
-N),
nitrate
(NO
3
−
total
(TN),
phosphorus
(TP)
quality
indicators.
demonstrates
optimal
efficiency.
experiment
also
investigated
differences
microbial
community
structure
between
group
concentration
study
mechanism
action
AOS.
offers
crucial
technical
insights
for
further
optimizing
technology
improving
Язык: Английский
High-rate nitrogen and phosphorus removal in a sulfur and pyrrhotite modified foam concrete constructed wetland
Bioresource Technology,
Год журнала:
2024,
Номер
419, С. 132008 - 132008
Опубликована: Дек. 20, 2024
Язык: Английский
Investigate the mystery of Baijiu production region - Environmental factors for Luzhou (Sichuan, China)
Czech Journal of Food Sciences,
Год журнала:
2023,
Номер
41(5), С. 323 - 339
Опубликована: Окт. 23, 2023
With
a
long
tradition
of
brewing
history,
Chinese
strong-flavour
Baijiu
(SFB)
developed
prosperously
in
the
southwest,
especially
Luzhou,
and
has
existed
for
more
than
300
years
building
craftwork
techniques.
As
product
distillation
fermented
grains,
its
production
involves
many
microbial
communities.
During
this
time,
communities
within
have
burgeoned
evolved
throughout
development
enhancing
unique
texture
flavour.
Meanwhile,
environmental
factors
are
critical
constituents
production,
which
provide
optimal
conditions
processing
procedures
various
microorganisms,
including
externally
controlled
macro-environment
micro-environment
fermentation.
By
studying
correlation
with
from
macro
micro
perspectives,
we
illustrated
bond
symbiotic
holistic
patterns
intrinsic
community
fermentation
characteristics.
This
review
is
essential
to
study
control
whole
ecological
process,
aiming
gain
insight
into
dynamics
microorganisms
ensure
traditional
environment
quality
control.
Язык: Английский