CN206511991U - It is a kind of suitable for low CN than modified form AAO ponds that sewage/wastewater is administered - Google Patents
It is a kind of suitable for low CN than modified form AAO ponds that sewage/wastewater is administered Download PDFInfo
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- CN206511991U CN206511991U CN201720200258.5U CN201720200258U CN206511991U CN 206511991 U CN206511991 U CN 206511991U CN 201720200258 U CN201720200258 U CN 201720200258U CN 206511991 U CN206511991 U CN 206511991U
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Abstract
It is a kind of suitable for low CN than modified form AAO ponds that sewage/wastewater is administered, including anaerobic reaction area, hypoxia response area, aerobic reactor zone, water inlet manifold, mud return line, total outlet pipe, the first straight type partition wall of some through holes of band second is provided with anaerobic reaction area, it is divided into the anaerobism subregion of some connections and provided with the first diving mixer, the anaerobism subregion of water inlet manifold access is muddy water mixed zone, the arc partition wall of opening at two is provided with hypoxia response area, underwater scooter, the second straight type partition wall in arc partition wall, closed in aerobic reactor zone provided with some one end, the be staggered the 3rd straight type partition wall that the other end disconnects, aerobic reactor zone is divided into some gallerys, one group of aerobic subregion is designed with gallery, pre- anoxic subregion and anoxic subregion, it is covered with aerator in aerobic subregion, the second diving mixer is provided with anoxic subregion.
Description
Technical field
The utility model is related to sewage/wastewater treatment technology, more particularly to a kind of to be applied to low CN than changing that sewage/wastewater is administered
Good figure AAO ponds.
Background technology
AAO is a kind of conventional sewage treatment process, is returned available for B-grade sewage processing, three-level sewage disposal and reclaimed water
With the effect with denitrogenation dephosphorizing simultaneously.Three areas are generally divided into, three areas have different functions and effect respectively：
1., raw sewage synchronously enters and be sufficiently mixed anaerobic reaction area with the phosphorous returned sludge discharged from sedimentation basin, this
Reaction zone major function is polyP bacteria release phosphorus, adequate preparation is carried out for poly- phosphorus, while partial organic substances are carried out into ammonification；
2., premiere feature is denitrogenation in hypoxia response area, and the mixed liquor rich in nitrate nitrogen is by interior circulation, by aerobic reaction
Area is sent, and under the anaerobic environment in hypoxia response area, nitrate nitrogen is converted into N by denitrifying bacterium2After be discharged into air so that rise
To the effect to sewage water denitrification, the mixing liquid measure of circulation is larger, generally 2Q ~ 3Q（Q is raw sewage flow）；
Aerobic reactor zone 3.-aeration zone, this reaction member is multi-functional, removes BOD, nitrification and absorbs phosphorus etc.
Carried out in this reaction zone, 3. interior mixed liquor is rich in nitrate nitrogen for aerobic reactor zone, and is back to hypoxia response area from here 2..
As shown in figure 1, traditional AAO techniques have three significantly to be separated with partition wall or dividing plate but each other by hole or pipe
Road connection functional areas, respectively anaerobic reaction area 1., hypoxia response area 2. and aerobic reactor zone 3..Pending sewage（Water
Measure Q）With returned sludge（Typically 0.5 ~ 1Q）Together enter anaerobic reaction area 1., anaerobic reaction area 1. it is interior be an anaerobism ring
Border, dissolved oxygen（DO）≤ 0.2mg/L, usual anaerobic reaction area 1. interior setting diving mixer, enables sewage abundant with sludge
Mixing, 1. anaerobic reaction area is an anaerobic environment, and polyP bacteria fully releases phosphorus simultaneously energy reserve anaerobic reaction area is 1. interior, is it
Aerobic reactor zone 3. can fully, efficiently poly- phosphorus prepare.1. 2. outlet water at tail end enters hypoxia response area to anaerobic reaction area, leads to
Normal hypoxia response area 2. interior setting underwater scooter, at the same with it is 3. being flowed back from aerobic reactor zone, rich in nitrate nitrogen（NO3 --N）
Mixed liquor mixing.2. hypoxia response area includes substantial amounts of denitrifying bacterium, under anoxic conditions, and denitrifying bacterium is with anaerobic reaction area
1. the organic matter in outlet water at tail end is nutrients, by nitrate in the mixed liquor of backflow（NO3 --N）It is converted into nitrogen（N2）, overflow
The water surface is discharged into air, so as to be able to remove the nitrogen in sewage（N）.2. outlet water at tail end enters aerobic reactor zone in hypoxia response area
3., usual aerobic reactor zone is 3. interior sets aerator and is covered with whole aerobic reactor zone 3., by aerator to micro- in sewage
Biology provides the oxygen required for vital movement such as its growth, breeding, mainly realizes Organic Pollution aerobic reactor zone is 3. interior
Thing（BOD）Degraded, remove, kjeldahl nitrogen is converted into nitrate nitrogen by nitrification（NO3 --N）, and the mixed-liquor return for passing through setting
Blowback flow to hypoxia response area 2. and polyP bacteria excess ingestion phosphorus（P）And remove the three zones such as P.Pass through above-mentioned whole mistake
Pollutant in journey, sewage is able to effectively remove, it is ensured that final outflow water being capable of qualified discharge or reuse.
The CN in sewage could effectively carry out denitrogenation than ＞ 2.86 in theory, and substantial amounts of Practical Project and research show,
In fact, can just make denitrification normal operation when CN is than ＞ 3.In CN ratios=4~5, the clearance of nitrogen is more than 60%.It is generally pure
Sanitary sewage and the preferable industrial wastewater CN ratios ＞ 4 of part water quality, can guarantee that the clearance of higher nitrogen.
At present, for the preferable sanitary sewage of water quality, the requirement of stably reaching standard discharge can be met completely.As China passes through
The fast development of Ji and environmental protection cause, sanitary sewage disposal demand is fewer and fewer.In contrast, various regions industrial park such as rain
Spring bamboo, advances by leaps and bounds afterwards, while producing a large amount of industrial wastewaters needs processing.In industrial park, often there is water quality complexity, it is dirty
The nutrition contents such as Organic substance in water are low and nitrogenous（N）Pollutant is often higher, shows in sewage nutriment ratio not
Suitably, this class waste water, we are normally referred to as " low CN is than sewage/wastewater ".Traditional AAO techniques are not adapted to instantly and future
The need for development, for industrial wastewater variation water quality is big, CN than low feature, if using above-mentioned traditional AAO techniques, often
Do not reach good denitrification effect, directly result in total nitrogen in water outlet（TN）Exceeded, the development of serious restriction industrial park is finally led
Cause economic, society and environmental development limited.
Above-mentioned CN ratios are often referred to BOD in sewage5With TN ratio, represented below with " CN ratios ".
Utility model content
The purpose of this utility model is that offer is a kind of and is applied to low CN than the modified form AAO ponds that sewage/wastewater is administered, and is passing
Improved, mainly transformed by pond type, water intake mode changes, endless form is innovated, functional areas on the AAO ponds basis of system
The concrete measures such as setting, can be applied to low CN and be administered than sewage/wastewater, and can stably reaching standard discharge.
Above-mentioned purpose of the present utility model technical scheme is that：One kind be applied to low CN than it is dirty/
Between the modified form AAO ponds of waste water treatment, including anaerobic reaction area, hypoxia response area and aerobic reactor zone, three by with
The subregion wall of first through hole is split and connected, anaerobic reaction area connection water inlet manifold and mud return line, aerobic reactor zone connection
Total outlet pipe, is provided with the first straight type partition wall of some through holes of band second in anaerobic reaction area, and the first straight type partition wall is by anaerobic reaction
Differentiation, which is cut into several anaerobism subregions connected by the second through hole, each anaerobism subregion, is equipped with the first submersible agitating
The anaerobism subregion of machine, wherein water inlet manifold access be set to muddy water mixed zone, hypoxia response area in the second straight type partition wall of setting,
Arc partition wall and underwater scooter, the second straight type partition wall are located in arc partition wall, and arc partition wall, which is provided with two, is located at the second straight type
Some three straight type partition walls are provided with the opening of partition wall both sides, aerobic reactor zone, one end of the 3rd straight type partition wall is closed, the other end
Disconnect, and adjacent 3rd straight type partition wall is staggered and is divided into aerobic reactor zone in the gallery of some connections, each gallery
It is designed with being covered with aeration in one group of aerobic subregion being sequentially arranged, pre- anoxic subregion and anoxic subregion, aerobic subregion
The second diving mixer is provided with device, anoxic subregion.
By using above-mentioned technical proposal, the muddy water mixed zone of anaerobic reaction area, which is primarily served, makes the well-mixed effect of muddy water
Really.Hypoxia response area sets the second straight type partition wall and arc partition wall, with reference to underwater scooter, makes the current shape in hypoxia response area
Into an annular, sewage is constantly circulated in hypoxia response area, and raw water is filled with the backflow mixed liquor from aerobic reactor zone
Divide dilution so that hypoxia response area forms a metastable environment, and adapts to the impact that sewage quality change is brought, together
When can reduce operating load, improve nitric efficiency, compared with traditional AAO ponds, more than 10% nitric efficiency can be improved.It is aerobic
Reaction zone is partitioned into the assembly of some " aerobic subregions+pre- anoxic subregion+anoxic subregion ", and by these assemblys
It is cascaded, forms some order reaction areas, each assembly carries out denitrification process simultaneously, according to reaction of high order efficiency
Theory, such as：Single-stage assembly nitric efficiency is 40%, then it is 100%- that two-stage, which combines total nitric efficiency,（100%-40%）*
（100%-40%）=64%；Similarly, if three-level is combined, total nitric efficiency is 78.4%；Level Four combines total nitric efficiency
87% ... combination series is more, and the total nitric efficiency in aerobic reactor zone is higher, therefore, it can according to actual requirement of engineering, spirit
Selection series living, greatly improves nitric efficiency.
It is preferred that, the second through hole is staggered, and the relative position of the second through hole on the adjacent first straight type partition wall is not
Together.
By using above-mentioned technical proposal, the second through hole relative position of adjacent first straight type partition wall is different, can make water
Stream forms S-shaped, to make full use of the capacity in AAO ponds, improves the pond body utilization rate in AAO ponds, obtain more preferable mixed effect and
Reaction effect.
It is preferred that, the subregion wall between anaerobic reaction area and hypoxia response area is provided with connecting hole, and connecting hole is arranged on
Subregion wall is provided with automatic controlling gate close to one end of water inlet manifold, connecting hole.
By using above-mentioned technical proposal, the purpose of design connecting hole and gate is the variation water quality when treatment sewage
Greatly, when requiring low to dephosphorization and requiring higher to denitrogenation, by opening automatic controlling gate, it is possible to which anaerobic reaction area is changed
For hypoxia response area, so as to strengthen denitrification effect, desalinate phosphorus removal functional, fully demonstrated the flexibility of process operation.
It is preferred that, the subregion wall between hypoxia response area and aerobic reactor zone is provided with mixed-liquor return pump, and mixed liquor
Reflux pump is arranged on subregion wall close to one end of total outlet pipe.
By using above-mentioned technical proposal, according to " aerobic subregion+pre- anoxic subregion+anoxic subregion " assembly
Denitrification effect, the mixed-liquor return pump coordinated signals with setting, can reduce opening time and the quantity of mixed-liquor return pump, greatly
Big reduction energy consumption, directly saves the operating cost of sewage treatment plant, produces huge economic benefit.
It is preferred that, aerobic subregion, pre- anoxic subregion and the anoxic subregion quantity set in aerobic reactor zone is at least
For three groups, provided with two aerobic subregions in the aerobic reactor zone of mixed-liquor return pump.
By using above-mentioned technical proposal, multistage-combination body is designed, so as to reach in the AAO ponds of certain capacity as far as possible
Ground improves the purpose of the total nitric efficiency of assembly, and two aerobic subregions are set close to mixed-liquor return pump, so that backflow
Sewage fully degraded by abundant nitrification, organic matter.
It is preferred that, water inlet pipe is connected on water inlet manifold, the another of water inlet pipe is connected to pre- anoxic subregion.
By using above-mentioned technical proposal, a water inlet pipe is connect in water inlet manifold to pre- anoxic subregion, and rich in nitre
State nitrogen（NO3 --N）Mixed liquor be sufficiently mixed, provide nutriment for the denitrifying bacteria in anoxic subregion, it is ensured that denitrogenation imitate
Rate is unlikely to reduce due to a lack of nutriment, so as to fundamentally ensure nitric efficiency；Without adding organic carbon into sewage
Source, saves the operating cost of sewage treatment plant, can produce huge economic benefit, while eliminating organic carbon source and adding and be
System, makes operation maintenance more easy.
It is preferred that, pre- anoxic subregion is provided with raw water toss area, and raw water toss area is added and is provided with pipe provided with pipe is added
Autocontrol valve.
By using above-mentioned technical proposal, it can automatically control, convenient operation and management.
To sum up, it is described in the utility model it is a kind of be applied to low CN than the modified form AAO ponds that sewage/wastewater is administered, denitrogenation is imitated
Rate is high, and stable water outlet is up to standard；Technological flexibility is strong；Equipment operating load is low, and energy consumption is low；Equipment is run and easy maintenance；Cost
Low, high financial profit.
Brief description of the drawings
Fig. 1 is the schematic diagram in tradition AAO ponds in background technology；
Fig. 2 is the schematic diagram than modified form AAO ponds that sewage/wastewater is administered suitable for low CN.
Reference：1st, anaerobic reaction area；101st, anaerobism subregion；102nd, muddy water mixed zone；2nd, hypoxia response area；3rd, it is good
Oxygen reaction zone；301st, aerobic subregion；302nd, pre- anoxic subregion；303rd, anoxic subregion；4th, subregion wall；401st, first leads to
Hole；402nd, connecting hole；5th, water inlet manifold；501st, water inlet supervisor；502nd, water inlet pipe；6th, mud return line；7th, total outlet pipe；8、
First straight type partition wall；801st, the second through hole；9th, the first diving mixer；10th, the second straight type partition wall；11st, arc partition wall；12nd, dive
Water propeller；13rd, the 3rd straight type partition wall；14th, aerator；15th, the second diving mixer；16th, automatic controlling gate；17th, mix
Liquid reflux pump；18th, raw water toss area；19th, pipe is added；20th, autocontrol valve.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As shown in Fig. 2 a kind of be applied to low CN than the modified form AAO ponds that sewage/wastewater is administered, including it is anaerobic reaction area 1, scarce
Split and connect by the subregion wall 4 with first through hole 401 between oxygen reaction zone 2 and aerobic reactor zone 3, three, anaerobism is anti-
Area 1 is answered to connect water inlet manifold 5 and mud return line 6, the connection of aerobic reactor zone 3 total outlet pipe 7.
The first straight type partition wall 8 of some the second through holes of band 801 is provided with anaerobic reaction area 1, the second through hole 801 is staggeredly set
Put, the relative position of the second through hole 801 on the adjacent first straight type partition wall 8 is different.First straight type partition wall 8 is by anaerobic reaction
Area 1, which is divided into the anaerobism subregion 101 that several are connected by the second through hole 801, each anaerobism subregion 101, is equipped with
The anaerobism subregion 101 of one diving mixer 9, wherein water inlet manifold 5 access is set to muddy water mixed zone 102.
Subregion wall 4 between anaerobic reaction area 1 and hypoxia response area 2 is provided with connecting hole 402, and connecting hole 402 is set
In subregion wall 4 close to one end of water inlet manifold 5, connecting hole 402 is provided with automatic controlling gate 16.
Second straight type partition wall 10, arc partition wall 11 and underwater scooter 12, the second straight type partition wall are set in hypoxia response area 2
10 are located in arc partition wall 11, and arc partition wall 11 is provided with the opening for being located at the second straight both sides of type partition wall 10 at two.
Subregion wall 4 between hypoxia response area 2 and aerobic reactor zone 3 is provided with mixed-liquor return pump 17, and mixed liquor is returned
Stream pump 17 is arranged on subregion wall 4 close to one end of total outlet pipe 7.
Some three straight type partition walls 13 are provided with aerobic reactor zone 3, one end of the 3rd straight type partition wall 13 is closed, and the other end breaks
Open.Adjacent 3rd straight type partition wall 13 is staggered and aerobic reactor zone 3 is divided into the gallery of four connections, wherein three gallerys
Inside it is designed with one group of aerobic subregion 301 being sequentially arranged, pre- anoxic subregion 302 and anoxic subregion 303, aerobic subregion
It is covered with 301 in aerator 14, anoxic subregion 303 and is provided with the second diving mixer 15, close to the corridor of mixed-liquor return pump 17
Provided with two aerobic subregions 301 in road.
Water inlet manifold 5 includes water inlet supervisor 501 and water inlet pipe 502, and water inlet supervisor 501 is connected to muddy water mixed zone 102,
Water inlet pipe 502 is connected to pre- anoxic subregion 302.Pre- anoxic subregion 302 is provided with raw water toss area 18, and raw water toss area 18 is set
There is what is connected with water inlet pipe 502 to add pipe 19, add and autocontrol valve 20 is installed on pipe 19.
Low CN is respectively enterd into water supervisor 501 and water inlet pipe 502, water inlet supervisor than sewage or waste water from water inlet manifold 5
Sewage or waste water in 501 together enters muddy water mixed zone 102 with the sludge in mud return line 6, in the first diving mixer 9
In the presence of be sufficiently mixed in the region；Anaerobism subregion 101 is entered by the second through hole 801 on the first straight type partition wall 8
Carry out, form S-shaped current and be well mixed, in the presence of polyP bacteria, partial organic substances are by ammonification, while being prepared for poly- phosphorus；
Then sewage or waste water enters hypoxia response area 2 by the first through hole 401 on subregion wall 4, in the second straight type partition wall 10 and arc
Annular water flow is formed in the presence of shape partition wall 11, underwater scooter 12 and is constantly circulated, raw water and returning from aerobic reactor zone 3
Flowing water is thoroughly mixed dilution, forms relatively stable environment；Sewage or waste water enters from the first through hole 401 on subregion wall 4 again
Enter in aerobic reactor zone 3, denitrogenation, degraded of organic pollution etc. are carried out by multistage-combination precursor reactant area, returned by mixed liquor
Stream pump 17 is back to the circular response of hypoxia response area 2；Last sewage or waste water is discharged from total outlet pipe 7.In water inlet pipe 502
Sewage or waste water enters aerobic reactor zone 3 from raw water toss area 18.
According to sewage or waste water processing requirement, by the automatic controlling gate 16 on connecting hole 402 and add on pipe 19
Autocontrol valve 20 flexibly selects the operational mode in AAO ponds, while ensureing that stable water outlet is up to standard, reduction energy consumption, saving
Cost.
This specific embodiment is only to explain of the present utility model, and it is not to limitation of the present utility model, ability
Field technique personnel can make the modification without creative contribution to the present embodiment as needed after this specification is read, but
As long as all being protected in right of the present utility model by Patent Law.
Claims (7)
1. a kind of be applied to low CN than the modified form AAO ponds that sewage/wastewater is administered, including anaerobic reaction area（1）, hypoxia response area
（2）And aerobic reactor zone（3）, by with first through hole between three（401）Subregion wall（4）Split and connect, anaerobism is anti-
Answer area（1）Connect water inlet manifold（5）And mud return line（6）, aerobic reactor zone（3）Connect total outlet pipe（7）, its feature exists
In：Anaerobic reaction area（1）It is interior to be provided with some through holes of band second（801）The first straight type partition wall（8）, the first straight type partition wall（8）Will
Anaerobic reaction area（1）It is divided into several to pass through the second through hole（801）The anaerobism subregion of connection（101）, each anaerobism sub-district
Domain（101）Inside it is equipped with the first diving mixer（9）, wherein water inlet manifold（5）The anaerobism subregion of access（101）It is set to mud
Water mixed zone（102）, hypoxia response area（2）The second straight type partition wall of interior setting（10）, arc partition wall（11）And underwater scooter
（12）, the second straight type partition wall（10）Positioned at arc partition wall（11）It is interior, arc partition wall（11）Provided with being located at the second straight type partition wall at two
（10）The opening of both sides, aerobic reactor zone（3）It is interior to be provided with some three straight type partition walls（13）, the 3rd straight type partition wall（13）One end
Closing, the other end disconnects, and adjacent 3rd straight type partition wall（13）It is staggered and by aerobic reactor zone（3）It is divided into some connections
Gallery, be designed with one group of aerobic subregion being sequentially arranged in each gallery（301）, pre- anoxic subregion（302）And anoxic
Subregion（303）, aerobic subregion（301）Inside it is covered with aerator（14）, anoxic subregion（303）Inside it is provided with the second submersible agitating
Machine（15）.
2. it is according to claim 1 it is a kind of suitable for low CN than modified form AAO ponds that sewage/wastewater is administered, it is characterised in that：
Second through hole（801）It is staggered, positioned at the adjacent first straight type partition wall（8）On the second through hole（801）Relative position
It is different.
3. it is according to claim 1 it is a kind of suitable for low CN than modified form AAO ponds that sewage/wastewater is administered, it is characterised in that：
The anaerobic reaction area（1）With hypoxia response area（2）Between subregion wall（4）It is provided with connecting hole（402）, and connecting hole
（402）It is arranged on subregion wall（4）Close to water inlet manifold（5）One end, connecting hole（402）It is provided with automatic controlling gate（16）.
4. it is according to claim 1 it is a kind of suitable for low CN than modified form AAO ponds that sewage/wastewater is administered, it is characterised in that：
The hypoxia response area（2）With aerobic reactor zone（3）Between subregion wall（4）It is provided with mixed-liquor return pump（17）, and mixing
Liquid reflux pump（17）It is arranged on subregion wall（4）Close to total outlet pipe（7）One end.
5. it is according to claim 4 it is a kind of suitable for low CN than modified form AAO ponds that sewage/wastewater is administered, it is characterised in that：
The aerobic reactor zone（3）The aerobic subregion of interior setting（301）, pre- anoxic subregion（302）With anoxic subregion（303）Number
Amount is at least three groups, close to mixed-liquor return pump（17）Aerobic reactor zone（3）Inside it is provided with two aerobic subregions（301）.
6. it is according to claim 1 it is a kind of suitable for low CN than modified form AAO ponds that sewage/wastewater is administered, it is characterised in that：
The water inlet manifold（5）On be connected to water inlet pipe（502）, water inlet pipe（502）Another be connected to pre- anoxic subregion
（302）.
7. it is according to claim 1 it is a kind of suitable for low CN than modified form AAO ponds that sewage/wastewater is administered, it is characterised in that：
The pre- anoxic subregion（302）Provided with raw water toss area（18）, raw water toss area（18）Provided with adding pipe（19）, add pipe
（19）On autocontrol valve is installed（20）.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720200258.5U CN206511991U (en) | 2017-03-02 | 2017-03-02 | It is a kind of suitable for low CN than modified form AAO ponds that sewage/wastewater is administered |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720200258.5U CN206511991U (en) | 2017-03-02 | 2017-03-02 | It is a kind of suitable for low CN than modified form AAO ponds that sewage/wastewater is administered |
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| Publication Number | Publication Date |
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| CN206511991U true CN206511991U (en) | 2017-09-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106830322A (en) * | 2017-03-02 | 2017-06-13 | 南京市市政设计研究院有限责任公司 | It is a kind of suitable for low CN than modified form AAO ponds that sewage/wastewater is administered |
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2017
- 2017-03-02 CN CN201720200258.5U patent/CN206511991U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106830322A (en) * | 2017-03-02 | 2017-06-13 | 南京市市政设计研究院有限责任公司 | It is a kind of suitable for low CN than modified form AAO ponds that sewage/wastewater is administered |
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