CN205527997U - Italic formula oxidation ditch - Google Patents

Italic formula oxidation ditch Download PDF

Info

Publication number
CN205527997U
CN205527997U CN201620104519.9U CN201620104519U CN205527997U CN 205527997 U CN205527997 U CN 205527997U CN 201620104519 U CN201620104519 U CN 201620104519U CN 205527997 U CN205527997 U CN 205527997U
Authority
CN
China
Prior art keywords
pond
oxidation ditch
downflow weir
formula oxidation
italic formula
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
Application number
CN201620104519.9U
Other languages
Chinese (zh)
Inventor
杨宗政
林玉科
胡钰彬
董春霞
张健
高雄
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tianjin University of Science and Technology
Original Assignee
Tianjin University of Science and Technology
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tianjin University of Science and Technology filed Critical Tianjin University of Science and Technology
Priority to CN201620104519.9U priority Critical patent/CN205527997U/en
Application granted granted Critical
Publication of CN205527997U publication Critical patent/CN205527997U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)

Abstract

The utility model discloses an italic formula oxidation ditch, this italic formula oxidation ditch mainly includes: the good oxygen pond of series connection in proper order, facultative anaerobic pond, the anaerobism pond, the oxygen deficiency pond, two sink pond and clean water basins, italic formula oxidation ditch has divide into the oxygen pond with portable overflow weir with it, facultative anaerobic pond, anaerobism pond, oxygen deficiency pond, two heavy pond and clean water basins through three circular arc type training walls, three linear type training walls, one fixed overflow weir, two brush aeration machines of bottom installation in good oxygen pond, facultative anaerobic pond, anaerobism pond and oxygen deficiency pond, the italic formula oxidation ditch bottom is equipped with the detachable support column. This italic formula oxidation ditch adopts the design of integration, and it is nimble convenient to use, can extensively be used for the domestic sewage's of the little water yield processing.

Description

A kind of italic formula oxidation ditch
Technical field
This utility model belongs to environmental project technical field of waste water processing, specifically a kind of italic formula oxidation ditch.
Background technology
Owing to water resource is the most in short supply, solution point source, pollution of area source become the theme of water environment protection, particularly disperse and are difficult to the little water yield polluter collected, process it in the urgent need to portable processing means.In Waste Water Treatment, activated sludge process occupies indispensable critical role, and oxidation ditch process is one of current biological wastewater treatment topmost process technique.
Oxidation ditch process is that a kind of sewage is done shuttling movement in the trench, carried out the activated sludge process of aeration by aeration rotary brush or rotating disk.Oxidation ditch process sludge loading is low, and circular flow is big, and capacity of resisting impact load is strong, and flow process is simple, maintenance management is convenient, treatment effect is stable, operating cost is low, can not set the advantage such as preliminary sedimentation tank and sludge digestion tank, is the two stage treatment technique enjoyed great popularity.Meanwhile, through the practical exploration of decades, oxidation ditch process is considered as the biologic treating technique that effluent quality is good, the most economic.But, the shortcomings such as the aeration mode of traditional oxidation ditch process is single, and floor space is big, and oxygen-transfer efficiency is low, and available depth is shallow, and spoil disposal is not smooth, sludge bulking, limit application and the development of oxidation ditch process.
Therefore, research and development a kind of low energy consumption, high efficiency oxidation ditch process, there is far-reaching important meaning.
Utility model content
The purpose of this utility model is to overcome spoil disposal smooth, and mud free settling is in irrigation canals and ditches, and available depth is little, and denitrification effect is the best, sludge bulking and the deficiency of the technology such as occupation area of equipment is big, it is provided that a kind of italic formula oxidation ditch.
The technical scheme solving above-mentioned technical problem is:
A kind of italic formula oxidation ditch, specifically includes that the Aerobic Pond being sequentially connected in series, oxygen compatibility pool, anaerobic pond, anoxic pond, second pond and clear water reserviors;Italic formula oxidation ditch built into jointly by described Aerobic Pond, oxygen compatibility pool, anaerobic pond, anoxic pond, second pond and clear water reserviors.
Described italic formula oxidation ditch, by three road circular arc type training walls, three road linear type training walls, together fixed downflow weir with together with portable downflow weir be classified as Aerobic Pond, oxygen compatibility pool, anaerobic pond, anoxic pond, second pond and clear water reserviors;Aerobic Pond, oxygen compatibility pool, anaerobic pond, anoxic pond, second pond and clear water reserviors are installed on same inclined floor, and the reliable action of gravity of sewage flow to clear water reserviors certainly from Aerobic Pond.
Described italic formula oxidation ditch, two rotating brush type aerators are installed in the bottom of Aerobic Pond, oxygen compatibility pool, anaerobic pond and anoxic pond, the controller of two rotating brush type aerators is installed opposite to each other, turns brush and makes mud and sewage fully mix, and the rotating brush type aerator blow rate required controls oxygen in water (DO);The one section of brush aeration pipe aeration turning brush controller recently of two rotating brush type aerators, aeration tube thereafter seals not aeration;Two rotating brush type aerators operate in opposite directions, and rotating speed keeps different, to increase the resistance to mass tranfer of current, make mud be difficult to precipitation and be sufficiently stirred for;Two in good time alternative aerations of rotating brush type aerator, and control aeration rate accordingly, A can be realized2/ O and inversion A2, there is sludge bulking phenomenon to reduce, and reach Nitrogen/Phosphorus Removal simultaneously in the alternate run of/O two-mode.
Described italic formula oxidation ditch, anoxic pond end arranges twice downflow weir;The distance farthest downflow weir of anoxic pond end is fixed downflow weir, and another road downflow weir be movable type downflow weir, the more portable downflow weir of fixed height of weir plate low;The pond of anoxic pond end is divided into second pond and clear water reserviors by fixed downflow weir and portable downflow weir;Secondary clarifier effluent flows through fixed downflow weir and enters clear water reserviors, and the water outlet after second pond stands, in water, suspended material (SS) can greatly reduce.
Described italic formula oxidation ditch, portable downflow weir is alternatively referred to as detachable downflow weir, i.e. arranges the groove of certain depth in its installation site, then install preprepared downflow weir;According to sewage treatment load, the downflow weir of differing heights is installed, the available depth of equipment, the hydraulic detention time of proper extension sewage can be deepened.
Described italic formula oxidation ditch, anoxic pond discharge pipeline, sludge from final clarifier pipe and clear water reserviors drain pipe are installed in bottom it, rely primarily on the gravity stream effect that inclined floor brings so that spoil disposal is smooth and easy, draining is smooth and easy, and reduce machinery energy consumption.
Described sludge from final clarifier pipe and anoxic pond discharge pipeline connect sludge pump, when needing sludge reflux, open sludge pump, its muddy water is back to Aerobic Pond.
Described italic formula oxidation ditch, its base plate is provided with support column;Support column is collapsible to be packed up.
The sewage water treatment method of the italic formula oxidation ditch described in employing, the steps include:
(1) sewage is entered in italic formula oxidation ditch by water inlet pipe, and under the stirring of rotating brush type aerator, muddy water fully mixes;
(2) under the gravity stream of inclined floor and the motive force of rotating brush type aerator act on jointly, process sewage with the most from left to right, then the mode of from top to bottom baffling flows through Aerobic Pond, oxygen compatibility pool, anaerobic pond, anoxic pond, second pond and clear water reserviors successively;
(3) in the way of backflow, processing effluent cycle and pass through Aerobic Pond, oxygen compatibility pool, anaerobic pond and anoxic pond, by nitrification and denitrification and spoil disposal, reach denitrogenation purpose, COD, BOD are the most significantly degraded simultaneously;
(4) by detection water outlet water quality index, determine sludge age, then by anoxic pond discharge pipeline and the in good time spoil disposal of sludge from final clarifier pipe, thus reach phosphor-removing effect.
The beneficial effects of the utility model are:
1. occupation area of equipment is few, portable.Rely on training wall to separate between each pond, under gravity stream effect, connect each pond in baffling mode, be particularly well-suited to the sewage disposal of low processing capacity;
2. spoil disposal is smooth and easy, and mud is difficult to deposit at the bottom of pond.Under the gravity stream effect of inclined floor, spoil disposal is thorough, also effectively reduces sludge bulking phenomenon;
3. turn brush control oxygen, homo-effect is good.In italic formula oxidation ditch, by regulating and controlling the rotating speed of rotating brush type aerator, traffic direction and the blow rate required thereof, muddy water in italic formula oxidation ditch is made to be sufficiently mixed;
4. available depth is big, easy to adjust.Packaged type or detachable downflow weir are set, and by installing the downflow weir of differing heights, to strengthen the available depth of italic formula oxidation ditch, not only increase biodegradation efficiency, also extend the hydraulic detention time of sewage;
5. automated management, saves labour force.In conjunction with intelligence control technology, it is achieved problems such as the water-in and water-out of integrated apparatus;
6. high treating effect, process system is stable.By arranging suspended material (SS) content that simple second pond can greatly reduce in water outlet water, after biodegradation processes, it can be ensured that produce water water quality and reach the emission request of " integrated wastewater discharge standard " and local laws and regulations;
7. simple and convenient operation and maintenance, operational management is safe and reliable.
Accompanying drawing explanation
Fig. 1, Fig. 2 and Fig. 3 are the top view of this utility model device structure, front view and side view successively.
" sequence number explanation in accompanying drawing "
1-1,1-2: rotating brush type aerator;1-3: circular arc type training wall;1-4: linear type training wall;1-5: water inlet pipe;1-6: detachable support column;1-7: fixed downflow weir;1-8: portable downflow weir;1-9: second pond;1-10: clear water reserviors;1-11: inclined floor;1-12: Aerobic Pond;1-13: oxygen compatibility pool;1-14: anaerobic pond;1-15: anoxic pond;1-16: clear water reserviors drain pipe;1-17: sludge from final clarifier pipe;1-18: anoxic pond discharge pipeline.
Detailed description of the invention
Below in conjunction with the accompanying drawings embodiment of the present utility model is described in further detail.
Fig. 1, Fig. 2 and Fig. 3 are the top view of this utility model device structure, front view and side view successively.
As shown in Figure 1, Figure 2 and Figure 3, this utility model provides a kind of italic formula oxidation ditch, specifically includes that the Aerobic Pond 1-12 being sequentially connected in series, oxygen compatibility pool 1-13, anaerobic pond 1-14, anoxic pond 1-15, second pond 1-9 and clear water reserviors 1-10;Described Aerobic Pond 1-12, oxygen compatibility pool 1-13, anaerobic pond 1-14, anoxic pond 1-15, second pond 1-9 and clear water reserviors 1-10 build into italic formula oxidation ditch jointly.
Described italic formula oxidation ditch, by three road circular arc type training wall 1-3, three road linear type training wall 1-4, together fixed downflow weir 1-7 with together with portable downflow weir 1-8 be classified as Aerobic Pond 1-12, oxygen compatibility pool 1-13, anaerobic pond 1-14, anoxic pond 1-15, second pond 1-9 and clear water reserviors 1-10;Aerobic Pond 1-12, oxygen compatibility pool 1-13, anaerobic pond 1-14, anoxic pond 1-15, second pond 1-9 and clear water reserviors 1-10 are installed on same inclined floor 1-11, and the reliable action of gravity of sewage flow to clear water reserviors 1-10 certainly from Aerobic Pond 1-12.
Described italic formula oxidation ditch, two rotating brush type aerators 1-1,1-2 are installed in the bottom of Aerobic Pond 1-12, oxygen compatibility pool 1-13, anaerobic pond 1-14 and anoxic pond 1-15, the controller of two rotating brush type aerators 1-1,1-2 is installed opposite to each other, turning brush makes mud and sewage fully mix, and rotating brush type aerator 1-1,1-2 blow rate required controls oxygen in water (DO);The one section of brush aeration pipe aeration turning brush controller recently of two rotating brush type aerators 1-1,1-2, aeration tube thereafter seals not aeration;Two rotating brush type aerators 1-1,1-2 operate in opposite directions, and rotating speed keeps different, to increase the resistance to mass tranfer of current, make mud be difficult to precipitation and be sufficiently stirred for;Two in good time alternative aerations of rotating brush type aerator 1-1,1-2, and control aeration rate accordingly, A can be realized2/ O and inversion A2, there is sludge bulking phenomenon to reduce, and reach Nitrogen/Phosphorus Removal simultaneously in the alternate run of/O two-mode.
Described italic formula oxidation ditch, anoxic pond 1-15 end arranges twice downflow weir 1-7,1-8;The distance farthest downflow weir of anoxic pond 1-15 end is fixed downflow weir 1-7, and another road downflow weir be movable type downflow weir 1-8, the fixed the most portable downflow weir of downflow weir 1-7 low;The pond of anoxic pond 1-15 end is divided into second pond 1-9 and clear water reserviors 1-10 by fixed downflow weir 1-7 and portable downflow weir 1-8;Second pond 1-9 water outlet flows through fixed downflow weir 1-7 and enters clear water reserviors 1-10, and the water outlet after second pond 1-9 stands, in water, suspended material (SS) can greatly reduce.
Described italic formula oxidation ditch, portable downflow weir 1-8 is alternatively referred to as detachable downflow weir 1-8, i.e. arranges the groove of certain depth in its installation site, then install preprepared downflow weir;According to sewage treatment load, the downflow weir of differing heights is installed, the available depth of equipment, the hydraulic detention time of proper extension sewage can be deepened.
Described italic formula oxidation ditch, anoxic pond discharge pipeline 1-18, sludge from final clarifier pipe 1-17 and clear water reserviors drain pipe 1-16 are installed in bottom it, rely primarily on the gravity stream effect that inclined floor 1-11 brings so that spoil disposal is smooth and easy, draining is smooth and easy, and reduce machinery energy consumption.
Described sludge from final clarifier pipe 1-17 and anoxic pond discharge pipeline 1-18 connects sludge pump, when needing sludge reflux, opens sludge pump, its muddy water is back to Aerobic Pond 1-12.
Described italic formula oxidation ditch, its base plate 1-11 is provided with support column 1-6;Support column 1-6 is collapsible to be packed up.
The sewage water treatment method of the italic formula oxidation ditch described in employing, the steps include:
(1) sewage is entered in italic formula oxidation ditch by water inlet pipe 1-5, and under the stirring of rotating brush type aerator 1-1,1-2, muddy water fully mixes;
(2) under the gravity stream of inclined floor 1-11 and the motive force of rotating brush type aerator 1-1,1-2 act on jointly, process sewage with the most from left to right, the most from top to bottom the mode of baffling flows through Aerobic Pond 1-12 successively, oxygen compatibility pool 1-13, anaerobic pond 1-14, anoxic pond 1-15, second pond 1-9 and clear water reserviors 1-10;
(3) in the way of backflow, processing effluent cycle and pass through Aerobic Pond 1-12, oxygen compatibility pool 1-13, anaerobic pond 1-14 and anoxic pond 1-15, by nitrification and denitrification and spoil disposal, reach denitrogenation purpose, COD, BOD are the most significantly degraded simultaneously;
(4) by detection effluent index, determine sludge age, then by anoxic pond discharge pipeline 1-18 and the in good time spoil disposal of sludge from final clarifier pipe 1-17, thus reach phosphor-removing effect.
Above an embodiment of the present utility model is described in detail, but described content has been only preferred embodiment of the present utility model, it is impossible to be considered for limiting practical range of the present utility model.All impartial changes made according to this utility model application range and improvement etc., within all should still belonging to patent covering scope of the present utility model.

Claims (7)

1. an italic formula oxidation ditch, it is characterized in that: this italic formula oxidation ditch specifically includes that the Aerobic Pond (1-12) being sequentially connected in series, oxygen compatibility pool (1-13), anaerobic pond (1-14), anoxic pond (1-15), second pond (1-9) and clear water reserviors (1-10);Described Aerobic Pond (1-12), oxygen compatibility pool (1-13), anaerobic pond (1-14), anoxic pond (1-15), second pond (1-9) builds into italic formula oxidation ditch jointly with clear water reserviors (1-10);
Described italic formula oxidation ditch, by three roads circular arc type training wall (1-3), three roads linear type training wall (1-4), together fixed downflow weir (1-7) and together movable type downflow weir (1-8) be classified as Aerobic Pond (1-12), oxygen compatibility pool (1-13), anaerobic pond (1-14), anoxic pond (1-15), second pond (1-9) and clear water reserviors (1-10);Aerobic Pond (1-12), oxygen compatibility pool (1-13), anaerobic pond (1-14), anoxic pond (1-15), second pond (1-9) and clear water reserviors (1-10) are installed on same inclined floor (1-11), and the reliable action of gravity of sewage flow to clear water reserviors (1-10) certainly from Aerobic Pond (1-12);
Described italic formula oxidation ditch, two rotating brush type aerators (1-1,1-2) are installed in the bottom of Aerobic Pond (1-12), oxygen compatibility pool (1-13), anaerobic pond (1-14) and anoxic pond (1-15), the controller of two rotating brush type aerators (1-1,1-2) is installed opposite to each other, turning brush makes mud and sewage fully mix, and rotating brush type aerator (1-1,1-2) blow rate required controls oxygen in water (DO);The one section of brush aeration pipe aeration turning brush controller recently of two rotating brush type aerators (1-1,1-2), aeration tube thereafter seals not aeration;Two rotating brush type aerators (1-1,1-2) operate in opposite directions, and rotating speed keeps different, to increase the resistance to mass tranfer of current, make mud be difficult to precipitation and be sufficiently stirred for;Two rotating brush type aerator (1-1,1-2) alternative aerations in good time, and control aeration rate accordingly, A can be realized2/ O and inversion A2, there is sludge bulking phenomenon to reduce, and reach Nitrogen/Phosphorus Removal simultaneously in the alternate run of/O two-mode.
2. according to a kind of italic formula oxidation ditch described in claim 1, it is characterised in that: described anoxic pond (1-15) end arranges twice downflow weir (1-7,1-8);The distance farthest downflow weir of anoxic pond (1-15) end is fixed downflow weir (1-7), and another road downflow weir be movable type downflow weir (1-8), fixed downflow weir (1-7) the most portable downflow weir low;The pond of anoxic pond (1-15) end is divided into second pond (1-9) and clear water reserviors (1-10) by fixed downflow weir (1-7) and portable downflow weir (1-8);Second pond (1-9) water outlet flows through fixed downflow weir (1-7) and enters clear water reserviors (1-10), and the water outlet after second pond (1-9) stands, in water, suspended material (SS) can greatly reduce.
3. according to a kind of italic formula oxidation ditch described in claim 1, it is characterised in that: described portable downflow weir (1-8), the groove of certain depth is i.e. set in its installation site, then preprepared downflow weir is installed;According to sewage treatment load, the downflow weir of differing heights is installed, the available depth of equipment, the hydraulic detention time of proper extension sewage can be deepened.
4. according to a kind of italic formula oxidation ditch described in claim 1, it is characterized in that: described anoxic pond discharge pipeline (1-18), sludge from final clarifier pipe (1-17) and clear water reserviors drain pipe (1-16) are installed in bottom it, rely primarily on the gravity stream effect that inclined floor (1-11) brings, make that spoil disposal is smooth and easy, draining is smooth and easy, and reduce machinery energy consumption.
5. according to a kind of italic formula oxidation ditch described in claim 1, it is characterized in that: described sludge from final clarifier pipe (1-17) and anoxic pond discharge pipeline (1-18) connect sludge pump, when needing sludge reflux, open sludge pump, its muddy water is back to Aerobic Pond (1-12).
6. according to a kind of italic formula oxidation ditch described in claim 1, it is characterised in that: described inclined floor (1-11) is provided with support column (1-6);Support column (1-6) is collapsible to be packed up.
7. according to a kind of italic formula oxidation ditch described in claim 1, it is characterised in that: the sewage water treatment method of the italic formula oxidation ditch described in employing, the steps include:
(1) sewage is entered in italic formula oxidation ditch by water inlet pipe (1-5), and under the stirring of rotating brush type aerator (1-1,1-2), muddy water fully mixes;
(2) under the gravity stream of inclined floor (1-11) and the motive force of rotating brush type aerator (1-1,1-2) act on jointly, process sewage with the most from left to right, the most from top to bottom the mode of baffling flows through Aerobic Pond (1-12) successively, oxygen compatibility pool (1-13), anaerobic pond (1-14), anoxic pond (1-15), second pond (1-9) and clear water reserviors (1-10);
(3) in the way of backflow, process effluent cycle by Aerobic Pond (1-12), oxygen compatibility pool (1-13), anaerobic pond (1-14) and anoxic pond (1-15), by nitrification and denitrification and spoil disposal, reaching denitrogenation purpose, COD, BOD are the most significantly degraded simultaneously;
(4) by detection effluent index, determine sludge age, then by anoxic pond discharge pipeline (1-18) and sludge from final clarifier pipe (1-17) spoil disposal in good time, thus reach phosphor-removing effect.
CN201620104519.9U 2016-01-29 2016-01-29 Italic formula oxidation ditch Active CN205527997U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620104519.9U CN205527997U (en) 2016-01-29 2016-01-29 Italic formula oxidation ditch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620104519.9U CN205527997U (en) 2016-01-29 2016-01-29 Italic formula oxidation ditch

Publications (1)

Publication Number Publication Date
CN205527997U true CN205527997U (en) 2016-08-31

Family

ID=56776477

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201620104519.9U Active CN205527997U (en) 2016-01-29 2016-01-29 Italic formula oxidation ditch

Country Status (1)

Country Link
CN (1) CN205527997U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105502661A (en) * 2016-01-29 2016-04-20 天津科技大学 Inclined oxidation ditch
CN116514351A (en) * 2023-07-03 2023-08-01 四川大学 Sewage advanced treatment integrated equipment and sewage treatment process

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105502661A (en) * 2016-01-29 2016-04-20 天津科技大学 Inclined oxidation ditch
CN116514351A (en) * 2023-07-03 2023-08-01 四川大学 Sewage advanced treatment integrated equipment and sewage treatment process
CN116514351B (en) * 2023-07-03 2023-10-10 四川大学 Sewage advanced treatment integrated equipment and sewage treatment process

Similar Documents

Publication Publication Date Title
CN103395950B (en) V-shape air-stripping technology for removing nitrogen and phosphorus of large and medium-sized sewage processing
CN103395947B (en) V-shaped gas stripping reflux two-stage precipitation integrated sewage treatment tank
CN102276103B (en) Integrated in-situ denitrification culture wastewater biological treatment device and treatment method
CN101269882B (en) Integrated oxidation ditch, construction and operation method
CN103395948B (en) Z-shaped gas stripping reflux two-stage precipitation integrated sewage treatment tank
CN201313860Y (en) Integrated aeration-sedimentation aerobic reactor
CN208814853U (en) Quick black smelly water treatment system of the biochemistry pool in conjunction with efficient sedimentation tank
CN108467105B (en) Continuous flow type reactor for denitrification aerobic granular sludge and working method thereof
CN103373794A (en) Sewage treatment process and special-purpose one-piece sewage treatment plant
CN102659227A (en) Middle-set type high density sediment water purification tank and purification technology thereof
CN105293834A (en) Integrated iods reactor
CN103408194A (en) Small sewage treatment hydrolysis and gas-stripping and precipitation technique method
CN104512963A (en) Integral multistage simultaneous nitrification and denitrification biological membrane system denitrification method and device
CN203392986U (en) V-type integrated sewage treatment pond employing gas stripping reflux and two-stage precipitation
CN205527997U (en) Italic formula oxidation ditch
CN105712579B (en) A kind of offshore platform life sewage treatment and reuse device with high salt
CN103183412B (en) Biochemical treatment device for sewage and treatment method thereof
CN104445838A (en) Sewage treatment system for small towns
CN102010062A (en) MBR wastewater treating system with double circular grooves
CN205740649U (en) A kind of offshore platform high salt life sewage treatment and reuse device
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
CN108623001B (en) Denitrification aerobic granular sludge sequencing batch reactor and working method thereof
CN108467106B (en) Aerobic granular sludge continuous flow type reactor and working method thereof
CN105502661B (en) A kind of italic formula oxidation ditch

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant