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英文文献
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氧化沟工艺在污水处理中的应用与发
展
Oxidize
the
ditch
craft
in
dirty
water
handle of application
and development
Summary:
This
text
expatiated
primarily
the
Carrousel
oxidizes
the
construction, craft mechanism of the
ditch and circulate the problem
exsited
in
the
process
with
the
homologous
the
method
of
y,
introduce
the
Carrousel
oxidize
the
latest
research
progress
of
the
ditch
and pointed out the future and main
research direction.
Key phrase: The
Carrousel oxidizes
the
ditch divideds
by the
phosphor takes off the nitrogen
construction mechanism
Application
and
Development
of
Carrousel
Oxidation
Ditch
Process
on Wastewater
Treatment
Abstract:
The
structure
and
the
techniques
of
carrousel
oxidation
ditch process on nitrogen and phosphor
removal are introduced in this
paper.
The
problems
inrunning
and
their
corresponding
resolvent
are
also
pointed. At last, The
authorshowed the up to date research improvement
and
the
mainly
future
research
dire-ction
Key
words:
Carrousel;
oxidation ditch;
nitrogen and phosphor removal;
structure;techniques
1. Foreword
Oxidize the ditch oxidation ditch
again a continuous circulation
spirit
pond Continuous loop reactor, is a live and dirty
mire method a
kind
of
to
ing
the
dirty
water
in
ditch
handles
the
craft
be researched to
manufacture by the hygiene engineering graduate
school
of
Holland
in
the
50's
of
20
centuries
in
1954
at
Dutch
throw
in
the
usage
for
the
very
first
e
its
a
water
fluid
matter
good,
circulate
the
stability
and
manage
convenience
etc.
technique
characteristics, already at domestic
and international and extensive
application in live the
dirty water to
is dirty to
manage aqueously with
the industry[1].
Current
application
than
oxidize
extensively
the
ditch
type
include:The Pasveer oxidizes the
ditch, the Carrousel oxidizes the
ditch, Orbal
oxidizes
the
ditch,
the
type
of
T
oxidizes
the
ditch
three
ditch
types oxidize the ditch, the type of DE oxidizes
the ditch to turn
to oxidize the ditch
with the integral oxidize the ditch
because of the difference of esse in
construction with circulating,
therefore
each
characteristics[2].This
text
will
introduce
construction,
mechanism,
existent problem and its latest developments that
Carrousel
oxidize ditches primarily.
2. The Carrousel oxidizes the
construction of the ditch
The
Carrousel oxidize the ditch to be researched to
manufacture
by
Dutch
DHV
company development
in
e
the
last
the company
of
DHV in foundation of the
ditch in the original Carrousel to permited
specially
the
company
EIMCO
to
invent
again
with
its
patent
in
the
United
States
Carrousel
2000
system
see
the
figure
,
realizes
the
living
creature
of
the
higher
request
takes
off
the
nitrogen
with
divided
by
the
function
of
.There
has
been
in
the
world
up
to
now
more
than
850
Carrousels
oxidize
the ditch with the Carrousel 2000
system are circulating[3].
From
diagram
therefore,
the
Carrousel
oxidizes
the
ditch
the
usage
the
spirit
of
that
definite
direction
control
with
shake
up
the
device,
face to mix with the
liquid deliver the level speed, from but make
drive
the
liquid
of
admixture
that
shake
up
is
in
oxidize
ditch
shut
match
outlet
circulate ore oxidize the ditch have
the special hydraulics
flows the ,
current complete mix with the characteristics of
the type
reactor,
have
the
characteristics
that
push
the
flow
type
reactor
again,
the ditch inside
exsits obviously of deliquescence oxygen density
steps
ing
the
ditch
cross
section
is
rectangle
or
trapezoids,
the
flat surface shape is many for oval,
the ditch internal water is deep
general for 2.5 ~ 4.5 m , the breadth
is deep compare for 2:1, also have
the
deep water amount to 7 ms of, ditch inside average
speed in water
current is 0.3 ms/ e
ditch spirit admixture equipments contain
surface spirit machine, the spirit of
turn to brush or turn the dish and
shoot
to
flow
the spirit
machine,
pipe
type spirit
machine
with
promote
take care of type
spirit machine etc., match with in recent years
usage
still contain underwater push
machine[4~6].
图
1 Carrousel
2000
系统平面结构图
3. The Carrousel
oxidizes the
mechanism of the ditch
3.1 The Carrousel oxidizes the ditch
handles dirty and aqueous
principle
The
at
the
beginning
common
Carrousel
oxidizes
the
dirty
water
in
inside in craft of the
ditch direct with dirty mire in reflux together
enter oxidize the ditch surface spirit
machine makes fuse in
the liquid of
admixture the density of the oxygen DO increases
about 2
the
3
mgs/
this
kind
of
well
the
term
of
the
oxygen
,
the
microorganism
gets
the
enough
deliquescence
oxygen
comes
and
go
to
divided
by the
BOD;At the same time, the ammonia were too
oxidized nitrate with
second nitrate,
this time, mix with the liquid be placed in the
oxygen
the
spirit
machine
downstream,
after
water
current
be
become by the swift flow appearance of
the spirit District of even flow
the
appearance,
the
water
current
maintains
in
the
minimum
current
velocity, guaranteeing the live and
dirty mire be placed in the floats
the
appearance.
average
current
velocity0.3
ms/
sOxidize
microbially
the
process consumed to fuse the oxygen in
the water, until the value of DO
declines
for
zero,
mixing
with
the
liquid
report
the
anoxia
nitric that turn the function through anoxia area,
mix
with
the
liquid
enter
to
have
the
oxygen
area,
completing
once
system
inside,
the
BOD
declines
the
solution
is
a
continuous
process,
the
nitric
turns
the function
to
turn
with
the
versa
nitric
the
function
take
place
in
same
e
of
structural
restrict,
this kind of
oxidize the ditch although can then valid
whereabouts BOD,
divided by the
phosphorus take off the nitrogenous ability
limited[7].
For the sake of the
acquisition better divided by the phosphorus
take
off
the
nitrogenous
result,
Carrousel
2000
systems
increased
a
oxygen
District
before
common
Carrousel
oxidize
ditch
with
the
unique
oxygen
area.
call again that the
versa nitric in front turns the areaThe dirty mire
in all refluxes enters the anaerobic
District with 10-30% dirty water,
can
under the anoxia with 10-30% carbon source term
complete remaining
of dirty mire in
reflux inside nitric acid nitrogen to versa nitric
to
turn, creates for the unique oxygen
pond of hereafter unique oxygen
the
same
time,
anaerobic
District
inside
of
concurrently
the
sex
germs convert the
dissolubility BOD VFA, the germ acquire the VFA
its
assimilation
PHB,
the
energy
source
needed
solves
in
the
phosphoric
water
and
cause
phosphatic
anaerobic
District
a
water
enters
the
inner part installs the
unique oxygen area that have the mixer, the
so-called unique oxygen is a pond
inside to mix with liquid since have
no
the
numerator
oxygen,
also
have
no
the
compound
oxygen
nitric
acid
root,
the
here
unique
oxygen
environment
is
next,70-90%
dirty
water
can
provide
the enough carbon
source, can make the germ of released the
phosphorus
unique
oxygen
area
connects
behind
the
common
Carrousel
oxidizes
the
ditch
system,
further
completing
to
do
away
with
the
BOD
and
take
off
the
nitrogen
with
divided
by
the
phosphorus
.Finally,
mix
with
the
liquid
transfer
the
dirty
mire
inside
in
oxidize
ditch
enrich
oxygen
area
eject,
while
enriching
the
oxygen
environment
germ
surfeit,
phosphorus
from
the
water, ejecting the
system with the dirty mire in this, in
Carrousel 2000 systems,
than
completed to
do
away with the
BOD, COD with
take off at the same time goodly the
nitrogen divided by the phosphorus
Synthesizing
and
dirty
water
in
the
river
City
,
long
sand
City
decontamination
center[s of the dirty the factory of water in the
first
in Kunming of adoption that
crafts handles the movement result of the
factory
therefore:Through
Carrousel
2000
system
after
handling,
the
BOD,
COD, SS does away with
the rate to all come to a 90% above, the TN does
away with the rate
comes to
a
80%,
the TP does away with
the rate to
also
come to a 90%.
3.2 The
Carrousel oxidizes the ditch divideds by the
phosphorus
takes off the nitrogenous
influence factor.
Affecting
the
Carrousel
oxidizes
the
ditch
divideds
by
the
phosphoric
factor
is
dirty
mire
,
nitrate
density
and quality
densities
research
expresses,
being
total
and
dirty
mire as
11%
that
a
hour
biggest
phosphorus
4%
with
deal
is
its
fuck
dirty
mire
deal
within
live
and
dirty
mire,
keep
for
the the
germ
physical
endowment
measures,