CN208716934U - A kind of oxidation ditch with aerobic particle mud denitrification functions - Google Patents
A kind of oxidation ditch with aerobic particle mud denitrification functions Download PDFInfo
- Publication number
- CN208716934U CN208716934U CN201820514487.9U CN201820514487U CN208716934U CN 208716934 U CN208716934 U CN 208716934U CN 201820514487 U CN201820514487 U CN 201820514487U CN 208716934 U CN208716934 U CN 208716934U
- Authority
- CN
- China
- Prior art keywords
- aerobic
- oxidation ditch
- particle mud
- control valve
- aerobic particle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
A kind of oxidation ditch with aerobic particle mud denitrification functions, by by modularization aerobic particle mud generating device distributing installation in the aerobic aeration area of oxidation ditch pool, multiple groups modular combination parallel operation is carried out according to pond type size by Connection Bracket, and Chi Ding is fixed on by fixed frame immersion；By modularization biological rope filler group frame distributing installation in the bioselection pond of oxidation ditch pool and aerobic area, multiple groups modular combination is carried out according to pond type size by fixed frame, and pass through the Chi Ding that is fixed on of fixed frame immersion, the arc training wall concentric of aerobic area biological rope filler arrangement and oxidation ditch；Increase system anaerobism-and the aerobic functional biological total amount of oxygen-, improve and the factors such as the biological total amount, carbon and nitrogen source mode of entrance, hydraulic shear, the dissolved oxygen concentration that control each workshop section of oxidation ditch system, so that it is transformed into aerobic particle mud denitrification process, improve its carbon, nitrogen, phosphorus synchronization process efficiency.
Description
Technical field
The utility model relates to a kind of aerobic sewage treatment technology be transformed into aerobic particle mud denitrification process method and
Device belongs to aerobic particle mud denitrogenation technical field, specifically a kind of oxidation ditch with aerobic particle mud denitrification functions.
Background technique
Oxidation ditch also known as oxidation canal, gain the name because of its structures irrigation canals and ditches in a closed ring shape.It is the one of activated sludge process
Kind modification technique, development formd DE type oxidation ditch, T-type oxidation ditch, VR type oxidation ditch, PI type oxidation ditch, opel in recent years
(Orbal) oxidation ditch, Carrousel (Carrousel) oxidation ditch, single-stage Carrousel oxidation ditch, Round Sump integrated oxidization
The various deformations technique such as ditch.The sewage and activated sludge of oxidation ditch constantly circulate in aeration channel, hydraulic detention time
Long, organic loading is low, substantially belongs to extended aeration system.
Aerobic particle mud (Aerobic Granular Sludge, AGS) is formed by microorganism self-cohesion action
Granulated activated sludge, compared with ordinary activated sludge, it, which has, is not susceptible to sludge bulking, strong shock resistance, can bear
High organic loading, the features such as collecting microorganism of different nature (aerobic and oxygen and anaerobe) Yu Yiti.The self-solidifying of microorganism
Collecting process is a complicated physics, chemistry and bioprocess, is granulated by a variety of such environmental effects, is oneself of microorganism
Cohesion provides suitable hydraulic shear and generallys use the big reactor of ratio of height to diameter and biggish aeration quantity, reactor too it is high again
Cause aeration energy consumption increase, this restrict aerobic particle mud (AGS) technology Practical Project application.
Biological treatment denitrification process generally comprises three ammonification, nitrification and denitrification processes.
1. ammonification: the itrogenous organic substance in sewage, by aerobic or anaerobism heterotroph microorganism oxygen in biological treatment process
Change the process for being decomposed into ammonia nitrogen；
2. nitrification: the ammonia nitrogen in sewage is converted into NO under the action of nitrifier (aerobic autotrophic type microorganism)2-With
NO3-Process；
3. denitrification: the NO in sewage2-And NO3-Under anoxic conditions in the work of denitrifying bacterium (facultative heterotrophic bacterium)
N is reduced under2Process, it may be assumed that
NO2-+3H+(electronics donor-organic matter) --- 1/2N2+H2O+OH-
NO3-+5H+(electronics donor-organic matter) --- 1/2N2+2H2O+OH-
And the aerobic treatment processes such as existing oxidation ditch and its deformation technique, it is all cotton-shaped activated sludge operation, technique system
System can not provide hydraulic shear required for forming aerobic particle mud (AGS), be easy to cause load impact, and carbon source is insufficient,
The problems such as sludge bulking, so that denitrification effect is undesirable.Therefore, on existing oxidation ditch aerobic treatment process, its spy is utilized
Some working conditions improve biological total amount, carbon and nitrogen source mode of entrance, hydraulic shear, the dissolved oxygen concentration of its each workshop section
Etc. the factors, so that oxidation ditch system is transformed into aerobic particle mud denitrification process, improve its carbon, nitrogen, phosphorus synchronization process efficiency be
It is feasible.
Utility model content
For above situation, aerobic particle mud is transformed into the purpose of the utility model is to provide a kind of oxidation ditch system and is taken off
The method and device of nitrogen technique is transformed, by the life for improving its each workshop section applied to existing oxidation ditch aerobic treatment process
The factors such as object total amount, carbon and nitrogen source mode of entrance, hydraulic shear, dissolved oxygen concentration, make oxidation ditch system be transformed into aerobic
Grain sludge denitrification technique, improve its carbon, nitrogen, phosphorus synchronization process efficiency.
To achieve the goals above, the utility model uses following technical scheme:
The aerobic aeration area of a kind of oxidation ditch with aerobic particle mud denitrification functions, the oxidation ditch is equipped with module
Change aerobic particle mud generating device, the bioselection pond of the oxidation ditch and aerobic area are equipped with modularization biological rope filler group
Frame,
The modularization aerobic particle mud generating device, including gas gathering mask, riser, moisture trap, return pipe, company
Fixed frame, relief tube and aerator are connect, gas gathering mask is mounted on above aerator, and riser lower end is connected at the top of gas gathering mask, is mentioned
Riser upper end tangentially enters from moisture trap middle cylinder；Moisture trap is installed above gas gathering mask, the connection of return pipe upper end
In moisture trap bottom, return pipe lower end is arranged between gas gathering mask top surface and liquid level, and relief tube one end is connected to air water point
From device top, relief tube is another to be connected to liquid level or less；
The modularization biological rope filler group frame includes biological rope filler and filler support, and the suspension of biological rope filler is fixed on
On filler support, filler support immersion is fixed in pond.
It further, further include water inlet pipe, mud return line and air inlet pipe, water inlet pipe is arranged water inlet control valve and surmounts pipe
Into bioselection pond, aerobic area and aerobic aeration zone；Mud return line setting recycle control valve and pipeline enter bioselection
Pond, oxidation ditch inlet segment aerobic area, air inlet pipe one end are connect with air blower, and the other end passes through air volume regulating valve and each exposure respectively
The connection of gas device.
It further, further include promoting regulating valve, decompression control valve, pressure sensor, dissolved oxygen monitor, tolerance to adjust
Valve, water inlet control valve, recycle control valve and control centre,
It promotes regulating valve to be mounted on riser, decompression control valve is mounted on relief tube, and pressure sensor is mounted on gas
At the top of separator；Dissolved oxygen monitor is respectively arranged in bioselection pond and aerobic aeration zone；Pressure sensor, pressure release are adjusted
Valve promotes regulating valve, dissolved oxygen monitor, air volume regulating valve, water inlet control valve, recycle control valve, air blower and control centre
Electrical connection is automatically controlled with realizing.
Further, the riser upper end is horizontal tube, the nozzle jet direction of horizontal tube and erecting for moisture trap
Straight axis is vertical；The return pipe lower end is horizontal tube, and return pipe lower end is equipped with the mixed spray head of rotation, revolves the jet direction of mixed spray head
On horizontal plane.
Further, gas gathering mask is one kind of cone-shaped or truncated cone-shaped or prismoid shaped, and the bigger diameter end of gas gathering mask is under, path
End is upper.
Further, moisture trap bottom is taper.
Further, the distance between gas gathering mask bottom and aerator be-centimetre.
Further, pass through Connection Bracket between multiple modularization aerobic particle mud generating devices according to pond type
Or pot carries out parallel operation after the assembly of multiple groups modular combination, and passes through the fixation of fixed steel structure and Connection Bracket immersion
In pond；The arc training wall concentric of aerobic area biological rope filler arrangement and oxidation ditch.
The working method of the oxidation ditch with aerobic particle mud denitrification functions,
When water inlet, 30%-80% is controlled by water inlet control valve by control centre and enters bioselection pond, 10%-70%
Into oxidation ditch inlet segment aerobic area, 10%-60% enters aerobic aeration area；
Control centre adjusts the start and stop of each group air volume regulating valve and air blower according to dissolved oxygen monitor feedback data respectively
Work, the air blower work of aeration phase is works intermittently or continuously mode, and control centre is according to the pressure tune of moisture trap
Section promotes regulating valve, the size of decompression control valve, and the dissolved oxygen in bioselection pond controls in 0.2-0.8mg/L, aerobic aeration area
Dissolved oxygen control in 0.5-2.0mg/L, the pressure of moisture trap is in 0.05-0.45MPa；Control centre passes through reflux control
Valve control sludge 30%-70% flows back into bioselection pond, and 30%-70% flows back into oxidation ditch inlet segment aerobic area.
When operation, the gas of aerator release is collected by gas gathering mask, and gas, liquid, solid mixture is quickly mentioned by riser
It rising and enters moisture trap, the material in the nozzle jetting flow moisture trap of riser upper end horizontal tube constantly rotates, then
Using potential difference, the material in moisture trap is back to above gas gathering mask by return pipe, and the horizonally projected jet for revolving mixed spray head is continuous
The material rotation in pond is driven, liquid, the mixed sinking of solid mixture rotation return to below gas gathering mask in pond, discharge again with aerator
Gas mixing, form quick systemic circulation；Control centre promotes regulating valve and decompression control valve control gas-water separation by adjusting
The pressure of device is in 0.05-0.45MPa, to increase the fluid circulation flow velocity inside and outside air residence time in water and device.
The method and device that the utility model oxidation ditch system is transformed into aerobic particle mud denitrification process has following excellent
Point:
(1) modularization aerobic particle mud generating device (MAGSG) smart structural design, simple, hydraulic shear is big, oxygen
Utilization rate improve.It is transformed for existing oxidation ditch and its deformation technique, utilizes the density pressure difference generated under aeration operating condition
Formation air lift kinetic energy is recycled to let out to spray to be formed to revolve under potential difference and pressure official post fluid and be mixed, improves fluid velocity, enhance water
Power shearing force improves air path in water and residence time, and improves the utilization rate of oxygen, enables the system to quickly be formed
Aerobic particle mud.
(2) modularization biologic packing material group frame arrangement increases system anaerobism-and the aerobic functional biological total amount of oxygen-, biochemical anti-
Thrust is answered to increase, impact resistance enhancing.
(3) distributed multipoint water feeding, sludge reflux multiparty control improve system carbon and nitrogen source mode of entrance, increase system
The variation for concentration gradient of uniting, enhances the function and effect of oxidation ditch system ammonification, nitrification and denitrification, denitrification effect is more preferable.
(4) modular combination, can the non-stop-machine fast grouping installation in oxidation ditch process.
Detailed description of the invention
Fig. 1: aerobic particle mud generating device structural schematic diagram.
Fig. 2: aerobic particle mud generating device structure top view.
Fig. 3: modularization assembling aerobic particle mud generating device schematic diagram.
Fig. 4: modularization assembling aerobic particle mud generating device top view.
Fig. 5: the plan view of oxidation ditch
Fig. 6: section (1-1) arrangement schematic diagram of oxidation ditch
In figure: 1, gas gathering mask, 2, riser, 3, moisture trap, 4, return pipe, 5, the mixed spray head of rotation, 6, Connection Bracket,
7, relief tube, 8, aerator, 9, wall, 10, fixed steel structure, 11, control centre, 12, promotion regulating valve, 13, pressure sensing
Device, 14, decompression control valve, 15, dissolved oxygen monitor, 16, modularization biologic packing material group frame, 17, water inlet control valve, 18, reflux
Control valve, 19, air volume regulating valve, 20, air blower, 21, aerobic aeration area, 22, aerobic area, 23, bioselection pond, 24, biology
Rope filler, 25, filler support, 26, fixed frame.
Specific embodiment
The implementation of the utility model, which is not limited to following, to be further illustrated to the utility model seat below with reference to example, attached drawing
Embodiment.
Embodiment 1
The aerobic aeration area 21 of a kind of oxidation ditch with aerobic particle mud denitrification functions, the oxidation ditch is equipped with mould
Block aerobic particle mud generating device, the bioselection pond 23 and aerobic area 22 of the oxidation ditch are equipped with modularization biological rope
Filler group frame 16,
The modularization aerobic particle mud generating device, including gas gathering mask 1, riser 2, moisture trap 3, return pipe
4, Connection Bracket 6, relief tube 7 and aerator 8, gas gathering mask 1 are mounted on 8 top of aerator, and 2 lower end of riser is connected to gas collection
1 top of cover, 2 upper end of riser tangentially enters from 3 middle cylinder of moisture trap；Moisture trap 3 installs 1 top of gas gathering mask,
4 upper end of return pipe is connected to 3 bottom of moisture trap, and 4 lower end of return pipe is arranged between 1 top surface of gas gathering mask and liquid level, pressure release
7 one end of pipe is connected to 3 top of moisture trap, and relief tube 7 is another to be connected to liquid level or less；
The modularization biological rope filler group frame 16 includes biological rope filler 24 and filler support 25, and biological rope filler 24 is outstanding
Extension is fixed on filler support 25, and 25 immersion of filler support is fixed in pond.
It further, further include water inlet pipe, mud return line and air inlet pipe, water inlet pipe is arranged water inlet control valve 17 and surmounts
Pipe enters bioselection pond 23, aerobic area 22 and aerobic aeration zone 21；Mud return line be arranged recycle control valve 18 and pipeline into
Enter bioselection pond 23, oxidation ditch inlet segment aerobic area 22, air inlet pipe one end is connect with air blower 20, and the other end passes through gas respectively
Adjustable valve 19 is connect with each aerator 8.
Further, further include promoted regulating valve 12, decompression control valve 14, pressure sensor 13, dissolved oxygen monitor 15,
Air volume regulating valve 19, water inlet control valve 17, recycle control valve 18 and control centre 11,
It promotes regulating valve 12 to be mounted on riser 2, decompression control valve 14 is mounted on relief tube 7, pressure sensor 13
It is mounted at the top of moisture trap；Dissolved oxygen monitor 15 is respectively arranged in bioselection pond 23 and aerobic aeration zone 21；Pressure
Sensor 13, decompression control valve 14, promoted regulating valve 12, dissolved oxygen monitor 15, air volume regulating valve 19, water inlet control valve 17,
Recycle control valve 18, air blower 20 are electrically connected to realize and automatically control with control centre 11.
Further, 2 upper end of riser is horizontal tube, nozzle jet direction and the moisture trap 3 of horizontal tube
Vertical axis is vertical；4 lower end of return pipe is horizontal tube, and 4 lower end of return pipe is equipped with the mixed spray head 5 of rotation, revolves penetrating for mixed spray head 5
Stream direction is on horizontal plane.
Further, gas gathering mask 1 is one kind of cone-shaped or truncated cone-shaped or prismoid shaped, and the bigger diameter end of gas gathering mask 1 is small under
Diameter end is upper.
Further, 3 bottom of moisture trap is taper.
Further, the distance between 1 bottom of gas gathering mask and aerator 8 are 5-50 centimetres.
Further, pass through Connection Bracket 6 between multiple modularization aerobic particle mud generating devices according to pond
Type or pot carry out parallel operation after the assembly of multiple groups modular combination, and pass through fixed steel structure 10 and 6 immersion of Connection Bracket
Be fixed in pond；The arc training wall concentric of 22 biological rope filler 24 of aerobic area arrangement and oxidation ditch.2 upper end of riser
Tangentially enter from 3 middle cylinder of moisture trap, specifically, 2 upper end of riser is to be connected into moisture trap 3 by horizontal tube
Portion, the jet direction of horizontal tube outlet are the secant direction of the radial section of moisture trap 3.
Embodiment 2
The working method of the oxidation ditch with aerobic particle mud denitrification functions,
When water inlet, 30%-80% is controlled by water inlet control valve 17 by control centre 11 and enters bioselection pond 23,
10%-70% enters oxidation ditch inlet segment aerobic area 22, and 10%-60% enters aerobic aeration area 21；
Control centre 11 adjusts each group air volume regulating valve 19 and air blower according to 15 feedback data of dissolved oxygen monitor respectively
The work of air blower 20 of 20 start and stop work, aeration phase is the mode that works intermittently or continuously, and control centre 11 is according to air water point
Pressure from device 3, which is adjusted, promotes regulating valve 12, the size of decompression control valve 14, and the dissolved oxygen control in bioselection pond 23 exists
The dissolved oxygen of 0.2-0.8mg/L, aerobic aeration area 21 are controlled in 0.5-2.0mg/L, and the pressure of moisture trap 3 is in 0.05-
0.45MPa；Control centre 11 controls sludge 30%-70% by recycle control valve 18 and flows back into bioselection pond 23,
30%-70% flows back into oxidation ditch inlet segment aerobic area 22.
When operation, the gas that aerator 8 discharges is collected by gas gathering mask 1, and gas, liquid, solid mixture is quick by riser 2
It is lifted into moisture trap 3, the material in the nozzle jetting flow moisture trap 3 of 2 upper end horizontal tube of riser constantly revolves
Turn, recycle potential difference, the material in moisture trap 3 is back to 1 top of gas gathering mask by return pipe 4, revolves the level of mixed spray head 5
Jet stream constantly drives the material in pond to rotate, and liquid in pond, solid mixture rotation is mixed sinks to returning to 1 lower section of gas gathering mask, again with
The gas mixing that aerator 8 discharges, forms quick systemic circulation；Control centre 11 promotes regulating valve 12 and pressure release adjusting by adjusting
Valve 14 controls the pressure of moisture trap 3 in 0.05-0.45MPa, to increase inside and outside air residence time in water and device
Fluid circulation flow velocity.
Claims (7)
1. a kind of oxidation ditch with aerobic particle mud denitrification functions, which is characterized in that the aerobic aeration area of the oxidation ditch
(21) modularization aerobic particle mud generating device, the bioselection pond (23) of the oxidation ditch and aerobic area (22) peace are installed
Equipped with modularization biological rope filler group frame (16),
The modularization aerobic particle mud generating device, including gas gathering mask (1), riser (2), moisture trap (3), reflux
(4), Connection Bracket (6), relief tube (7) and aerator (8) are managed, gas gathering mask (1) is mounted on above aerator (8), riser
(2) lower end is connected at the top of gas gathering mask (1), and riser (2) upper end tangentially enters from moisture trap (3) middle cylinder；Air water
Separator (3) is installed above gas gathering mask (1), and return pipe (4) upper end is connected to moisture trap (3) bottom, return pipe (4) lower end
It is arranged in gas gathering mask (1) between top surface and liquid level, relief tube (7) one end is connected to moisture trap (3) top, relief tube (7)
It is another to be connected to liquid level or less；
The modularization biological rope filler group frame (16) includes biological rope filler (24) and filler support (25), biological rope filler
(24) suspension is fixed on filler support (25), and filler support (25) immersion is fixed in pond；
It further include water inlet pipe, mud return line and air inlet pipe, water inlet pipe, which is arranged water inlet control valve (17) and surmounts pipe, enters biology
It selects pond (23), aerobic area (22) and aerobic aeration zone (21)；Recycle control valve (18) are arranged in mud return line and pipeline enters
Bioselection pond (23), oxidation ditch inlet segment aerobic area (22), air inlet pipe one end are connect with air blower (20), and the other end leads to respectively
Air volume regulating valve (19) is crossed to connect with each aerator (8).
2. as described in claim 1 with the oxidation ditch of aerobic particle mud denitrification functions, which is characterized in that further include being promoted
Regulating valve (12), decompression control valve (14), pressure sensor (13), dissolved oxygen monitor (15), air volume regulating valve (19), water inlet
Control valve (17), recycle control valve (18) and control centre (11),
It promotes regulating valve (12) to be mounted on riser (2), decompression control valve (14) is mounted on relief tube (7), pressure sensing
Device (13) is mounted at the top of moisture trap；Dissolved oxygen monitor (15) is respectively arranged in bioselection pond (23) and aerobic aeration
Area (21)；Pressure sensor (13), decompression control valve (14) promote regulating valve (12), dissolved oxygen monitor (15), tolerance adjusting
Valve (19), water inlet control valve (17), recycle control valve (18), air blower (20) are electrically connected automatic to realize with control centre (11)
Control.
3. the oxidation ditch with aerobic particle mud denitrification functions as described in claim 1~2 any one, feature exist
In riser (2) upper end is horizontal tube, and the nozzle jet direction of horizontal tube and the vertical axis of moisture trap (3) hang down
Directly；Return pipe (4) lower end is horizontal tube, and return pipe (4) lower end is equipped with rotation and mixes spray head (5), revolves the jet stream of mixed spray head (5)
Direction is on horizontal plane.
4. the oxidation ditch with aerobic particle mud denitrification functions as described in claim 1~2 any one, feature exist
In gas gathering mask (1) is one kind of cone-shaped or truncated cone-shaped or prismoid shaped, and the bigger diameter end of gas gathering mask (1) is under, and miner diameter end is upper.
5. the oxidation ditch with aerobic particle mud denitrification functions as described in claim 1~2 any one, feature exist
In moisture trap (3) bottom is taper.
6. the oxidation ditch with aerobic particle mud denitrification functions as described in claim 1~2 any one, feature exist
In the distance between gas gathering mask (1) bottom and aerator (8) are 5-50 centimetres.
7. the oxidation ditch with aerobic particle mud denitrification functions as described in claim 1~2 any one, feature exist
In by Connection Bracket (6) according to pond type or pot progress between multiple modularization aerobic particle mud generating devices
Parallel operation after the assembly of multiple groups modular combination, and being fixed on by fixed steel structure (10) and Connection Bracket (6) immersion
In pond；The arc training wall concentric of aerobic area (22) biological rope filler (24) arrangement and oxidation ditch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820514487.9U CN208716934U (en) | 2018-04-12 | 2018-04-12 | A kind of oxidation ditch with aerobic particle mud denitrification functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820514487.9U CN208716934U (en) | 2018-04-12 | 2018-04-12 | A kind of oxidation ditch with aerobic particle mud denitrification functions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208716934U true CN208716934U (en) | 2019-04-09 |
Family
ID=65969790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820514487.9U Active CN208716934U (en) | 2018-04-12 | 2018-04-12 | A kind of oxidation ditch with aerobic particle mud denitrification functions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208716934U (en) |
-
2018
- 2018-04-12 CN CN201820514487.9U patent/CN208716934U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104045156B (en) | Integrated high-efficiency self-supported denitrification reactor | |
| CN103043870B (en) | Novel automatic-reflux biological sewage processor | |
| CN103395947B (en) | V-shaped gas stripping reflux two-stage precipitation integrated sewage treatment tank | |
| CN108467105A (en) | A kind of denitrogenation aerobic particle mud continuous flow type reactor and its working method | |
| CN103395948B (en) | Z-shaped gas stripping reflux two-stage precipitation integrated sewage treatment tank | |
| CN110002593B (en) | Integrated distributed domestic sewage treatment device | |
| CN104828941A (en) | A2O-BAF combined process and A2O-BAF combined device | |
| CN101274805B (en) | Hydraulic oxygen increasing water self-cleaning screen | |
| CN208485665U (en) | A kind of CASS system with aerobic particle mud denitrification functions | |
| CN208485664U (en) | A kind of SBR system with aerobic particle mud denitrification functions | |
| CN108439597A (en) | A kind of AAO systems and its working method with aerobic particle mud denitrification functions | |
| CN102010062B (en) | MBR wastewater treating system with double circular grooves | |
| CN208292737U (en) | A kind of AAO system with aerobic particle mud denitrification functions | |
| CN208716934U (en) | A kind of oxidation ditch with aerobic particle mud denitrification functions | |
| CN206915847U (en) | A kind of AA MBBR sewage disposal systems | |
| CN103979670B (en) | Tower biological sewage treatment device | |
| CN108640263A (en) | A kind of oxidation ditch and its working method with aerobic particle mud denitrification functions | |
| CN208166663U (en) | A kind of denitrogenation aerobic particle mud sequencing batch reactor | |
| CN201914974U (en) | Dual-circular groove membrane bioreactor (MBR) waste water treatment system | |
| CN203392987U (en) | Z-type integrated sewage treatment pond employing gas stripping reflux and two-stage precipitation | |
| CN103183412B (en) | Biochemical treatment device for sewage and treatment method thereof | |
| CN107651753B (en) | Sewage denitrification and dephosphorization device | |
| CN110606568A (en) | Integrated A with embedded precipitation structure2/O biochemical tower | |
| CN108623001A (en) | A kind of denitrogenation aerobic particle mud sequencing batch reactor and its working method | |
| CN208265848U (en) | A kind of modularization aerobic particle mud generating device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |