CN203558920U - Circulation flow annular type membrane bioreactor - Google Patents
Circulation flow annular type membrane bioreactor Download PDFInfo
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- CN203558920U CN203558920U CN201320685388.4U CN201320685388U CN203558920U CN 203558920 U CN203558920 U CN 203558920U CN 201320685388 U CN201320685388 U CN 201320685388U CN 203558920 U CN203558920 U CN 203558920U
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- 239000012528 membrane Substances 0.000 title claims abstract description 89
- 238000006243 chemical reaction Methods 0.000 claims abstract description 53
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 91
- 238000012549 training Methods 0.000 claims description 43
- 238000005192 partition Methods 0.000 claims description 37
- 239000010802 sludge Substances 0.000 claims description 27
- 238000013461 design Methods 0.000 claims description 23
- 230000009189 diving Effects 0.000 claims description 19
- 238000010992 reflux Methods 0.000 claims description 17
- 239000007788 liquid Substances 0.000 claims description 15
- 238000005273 aeration Methods 0.000 claims description 7
- 239000011148 porous material Substances 0.000 claims description 7
- 238000005276 aerator Methods 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 4
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 20
- 230000033001 locomotion Effects 0.000 description 19
- 239000010865 sewage Substances 0.000 description 18
- 230000000694 effects Effects 0.000 description 14
- 230000008569 process Effects 0.000 description 11
- 239000011259 mixed solution Substances 0.000 description 9
- 239000000725 suspension Substances 0.000 description 9
- 238000003756 stirring Methods 0.000 description 8
- 239000003344 environmental pollutant Substances 0.000 description 6
- 238000011068 loading method Methods 0.000 description 6
- 231100000719 pollutant Toxicity 0.000 description 6
- 238000004065 wastewater treatment Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- 238000005842 biochemical reaction Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 239000012510 hollow fiber Substances 0.000 description 3
- 238000007654 immersion Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000000108 ultra-filtration Methods 0.000 description 3
- 241000196324 Embryophyta Species 0.000 description 2
- 230000001351 cycling effect Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 241000220317 Rosa Species 0.000 description 1
- 230000000703 anti-shock Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000010786 composite waste Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
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Abstract
The utility model relates to a circulation flow annular type membrane bioreactor which comprises an anaerobic zone, an anoxic zone, an aerobic zone and a membrane bioreaction zone arranged inside the aerobic zone which are arranged in sequence, wherein thrust type submersible stirrers are arranged inside the reaction zones; an air lifting device I is transversely arranged between the anaerobic zone and the anoxic zone; and an air lifting device II is transversely arranged between the aerobic zone and the anoxic area. Through optimized combination of the reactor, the flexible strain capacity of a system is greatly improved, the engineering investment is greatly reduced, and meanwhile the energy consumption is saved.
Description
Technical field
The utility model relates to a kind of circulation flow ring-shaped membrane bioreactor, belongs to waste disposal plant field.
Background technology
In Continuous Flow denitrification dephosphorization technique, current membrane bioreactor (MBR, refer to biological respinse to combine with membrane sepn, conventional gravitational settling solid-liquid separation obtains water outlet as separating medium substitutes to take film, and can change reaction process and improve the sewage water treatment method of reaction efficiency) because its flow process is simple and direct, processing efficiency is high, take up an area save, effluent quality is superior has a vast potential for future development.
By technique pattern, MBR technique can be divided into submerged membrane biological treatment system (Immersed membrane biological treatment system, be called for short S-MBR) and external membrane biological treatment system (Side stream membrane biological treatment system is called for short R-MBR).S-MBR refers to that membrane module is immersed in biological reaction tank, and pollutent carries out biochemical reaction at biological reaction tank, utilizes film to carry out equipment or the system of solid-liquid separation, can adopt negative pressure to produce water, also can utilize hydrostaticpressure from miscarrying water.R-MBR refer to membrane module and biological reaction tank arranged apart, active sludge intermixture in biological reaction tank pumps into equipment or the system that film group device carries out solid-liquid separation, produce water discharge or advanced treatment, concentrated mud mixture is back to circulation concentration basin or biological reaction tank, forms circulation.Limit by operational conditions, from safety performance equal angles, the main way that R-MBR is current application.
S-MBR replaces traditional biological treatment technology end second pond with membrane module, in bio-reactor, keep high reactivity sludge concentration, improve biological treatment organic loading, thereby reduce sewage treatment facility floor space, and by keeping low sludge loading to reduce surplus sludge volume.Can utilize active sludge and larger molecular organics in the membrane separation plant entrapping tank of being immersed in aerobe pond.In membrane bioreactor system, active sludge (MLSS) concentration can be promoted to 8000～10,000mg/L, even higher; Sludge age (SRT) can extend to more than 30 days.
Yet in actual application, MBR energy consumption is higher, for the sewage disposal of Typical Towns, even more traditional A/O technique is high more than 1 times, has formed huge obstacle thus for promoting the use of of this technology.
Utility model content
The purpose of this utility model is to overcome the shortcoming of prior art, and a kind of circulation flow ring-shaped membrane bioreactor is provided, and the technique of utilizing this circulation flow ring-shaped membrane bioreactor to carry out sewage disposal has the feature of high-efficiency low energy consumption.
The utility model is achieved through the following technical solutions:
A kind of circulation flow ring-shaped membrane bioreactor (CCFP-MBR), comprises anaerobic zone, oxygen-starved area, the aerobic zone of setting up successively and is arranged on the membrane biological reaction district in aerobic zone; Between described anaerobic zone and oxygen-starved area, be provided with the first partition wall longitudinally, one end of described the first partition wall is provided with the first water hole; Between described oxygen-starved area and aerobic zone, be provided with the second partition wall longitudinally, one end of described the second partition wall is provided with the second water hole.
Preferably, described anaerobic zone is provided with the first training wall longitudinally, by described the first training wall, anaerobic zone is divided into the anaerobic zone A in left side and the anaerobic zone B on right side; One end of described the first training wall arranges the 3rd water hole, and the other end arranges the 4th water hole.
Preferably, described oxygen-starved area is provided with the second training wall longitudinally, by described the second training wall, oxygen-starved area is divided into the oxygen-starved area A in left side and the oxygen-starved area B on right side; One end of described the second training wall arranges the 5th water hole, and the other end arranges the 6th water hole.
Preferably, described aerobic zone is provided with the 3rd horizontal training wall, by described the 3rd training wall, aerobic zone is divided into the aerobic zone A of upside and the aerobic zone B of downside.
Preferably, the one end near described the second partition wall on described the 3rd training wall is provided with recycle ratio adjustable checkgate, and the other end arranges the 7th water hole.
Preferably, described membrane biological reaction district is positioned at described aerobic zone B.
Preferably, described membrane biological reaction district is rectangle, and a side is connected with longitudinal exterior wall of described aerobic zone B, and other three side is adjacent and parallel with the horizontal exterior wall of described the 3rd training wall, the second partition wall and described aerobic zone B respectively.
Preferably, between described membrane biological reaction district and described the 3rd training wall, be also provided with the 3rd horizontal partition wall, the one end near described the 7th water hole on described the 3rd partition wall is provided with the 8th water hole.
Preferably, described membrane biological reaction district is provided with film district water distribution weir gate near a side of the horizontal exterior wall of described aerobic zone B, and described membrane biological reaction district is provided with film district water outlet weir gate near a side of described the 3rd partition wall.
Preferably, gap between described membrane biological reaction district Shang Mo district water distribution weir gate place one side and the horizontal exterior wall of described aerobic zone B is canal for water distribution, and the gap between a side at Shang Mo district water outlet weir gate place, described membrane biological reaction district and described the 3rd partition wall is water outlet channel.
Preferably, in described anaerobic zone A, anaerobic zone B, oxygen-starved area A, oxygen-starved area B, aerobic zone A and aerobic zone B, be equipped with push flowing diving mixer.
Preferably, be provided with the air lift unit I of horizontal placement between described anaerobic zone and oxygen-starved area, the fluid inlet of described air lift unit I is positioned at oxygen-starved area, and the liquid outlet of described air lift unit I is positioned at anaerobic zone.
Preferably, be provided with the air lift unit II of horizontal placement between described aerobic zone and oxygen-starved area, the fluid inlet of described air lift unit II is positioned at aerobic zone, and the liquid outlet of described air lift unit II is positioned at oxygen-starved area.
Preferably, the longitudinal parallel connection in described membrane biological reaction district is provided with a plurality of separate membrane biological reaction subregions; Each membrane biological reaction subregion is provided with film district water distribution weir gate near a side of the horizontal exterior wall of described aerobic zone B, and each membrane biological reaction subregion is provided with film district water outlet weir gate near a side of described the 3rd partition wall.
Preferably, when design sludge concentration is lower, be provided with mud enrichment region in described aerobic zone, described mud is established sludge refluxing apparatus in enrichment region, and the mud discharging mouth of described sludge refluxing apparatus is positioned at described anaerobic zone.Design sludge concentration mainly refers to namely MLSS value of microorganism concn, if MLSS value is lower, processing power a little less than, the sludge reflux after the object of sludge reflux will soon concentrate, to anaerobic zone, makes whole reactor maintain higher sludge concentration.
Preferably, described aerobic zone is provided with blast aerator; Described blast aerator comprises the micro-pore aeration system of being located in aerobic zone and is located at the gas blower outside aerobic zone.
Preferably, in described oxygen-starved area, be provided with micro-pore aeration system.
Technique effect of the present utility model and advantage are:
1.CCFP-MBR has abandoned the current pattern that general membrane bioreactor is single, adopts polytype combination of reactors, has facilitated operational management, has optimized reaction technology.
2. in operation scheme, adopt the fluidised form of cycling stream, have the ability of anti-shock loading and the better treatment effect of plug-flow reactor of complete concurrently, both can process city domestic sewage, can process the composite waste containing part trade effluent again;
3. use for reference in river dynamics in the theoretical and hydromechanics of the characteristics of motion about Solution of Flow in Curved Channel the near influence principle about shock resistance, the velocity flow profile of ring-type circulatory pool type rationally, be difficult for generation deposition phenomenon, head loss is less;
4. the current in each section all present fairly obvious limit wall turbulent diffusion phenomenon and secondary flow phenomenon, very positive on the impact that mix and blend rose;
5. current effect of mass transmitting is strengthened, can eliminate short stream, backflow and dead band possibility occurrence low, reduce current dead angle, the allocation of space of uniform stirring power, the mixed effect of realizing ideal;
6. operation scheme is more flexible, comprise expanded mixed-liquor return mode can choice etc. aspect;
7. saved water inlet, entered the distribution system of mud and reflux line, the pipeline of having simplified reactive system distributes;
8. utilize cycling stream waterpower form, replaced the vast scale sludge reflux in general MBR technique, Dui Mo district dissolved oxygen is recycled more effectively simultaneously, and energy conservation and consumption reduction effects is obvious;
9. utilize lower impellent, for the biofloculation in reactor provides favourable condition, while energy efficient;
10. various hybrid modes are combined, improved the suitability of system processing different quality;
11. adopt micro-pore aeration equipment, and power consumption is far below oxidation ditch process; In conjunction with plug-flow, thoroughly solved the contradiction between oxygenation and stirring.
Accompanying drawing explanation
A kind of circulation flow ring-shaped membrane bioreactor plan structure schematic diagram of Fig. 1
Reference numeral:
1, anaerobic zone; 1a, anaerobic zone A; 1b, anaerobic zone B;
2, oxygen-starved area; 2a, oxygen-starved area A; 2b, oxygen-starved area B;
3, aerobic zone; 3a, aerobic zone A; 3b, aerobic zone B;
4, membrane biological reaction district; 5, the first training wall; 6, the first partition wall; 7, the second training wall; 8, the second partition wall; 9, the 3rd training wall; 10, the 3rd partition wall; 11, film district water distribution weir gate; 12, film district water outlet weir gate; 13, canal for water distribution; 14, water outlet channel; 15, push flowing diving mixer; 16, the 3rd water hole; 17, the 4th water hole; 18, the first water hole; 19, the 5th water hole; 20, the 6th water hole; 21, the second water hole; 22, the 7th water hole; 23, recycle ratio adjustable checkgate; 24, air lift unit II; 25, air lift unit I, the 26, the 8th water hole.
Embodiment
Below by specific specific examples explanation the technical solution of the utility model.Should be understood that these embodiment are only not used in restriction scope of the present utility model for the utility model is described.And except as otherwise noted, the change of relativeness or adjustment, without essence change technology contents in the situation that, when being also considered as the enforceable category of the utility model.
A kind of circulation flow ring-shaped membrane bioreactor (CCFP-MBR), as shown in Figure 1, comprises anaerobic zone 1, oxygen-starved area 2, the aerobic zone 3 of setting up successively and is arranged on the membrane biological reaction district 4 in aerobic zone 3; Between described anaerobic zone 1 and oxygen-starved area 2, be provided with the first partition wall 6 longitudinally, one end of described the first partition wall 6 is provided with the first water hole 18; Between described oxygen-starved area 2 and aerobic zone 3, be provided with the second partition wall 8 longitudinally, one end of described the second partition wall 8 is provided with the second water hole 21;
Described anaerobic zone 1 is provided with the first training wall 5 longitudinally, by described the first training wall 5, anaerobic zone 1 is divided into the anaerobic zone B1b on the A1aHe right side, anaerobic zone in left side; One end of described the first training wall 5 arranges the 3rd water hole 16, and the other end arranges the 4th water hole 17;
In described oxygen-starved area 2, be provided with the second training wall 7 longitudinally, by described the second training wall 7, oxygen-starved area 2 be divided into the oxygen-starved area B2b on the A2aHe right side, oxygen-starved area in left side; One end of described the second training wall 7 arranges the 5th water hole 19, and the other end arranges the 6th water hole 20;
Described aerobic zone 3 is provided with the 3rd horizontal training wall 9, by described the 3rd training wall 9, aerobic zone 3 is divided into the aerobic zone A3a of upside and the aerobic zone B3b of downside;
One end near described the second partition wall 8 on described the 3rd training wall 9 is provided with recycle ratio adjustable checkgate 23, and the other end arranges the 7th water hole 22;
Described membrane biological reaction district 4 is positioned at described aerobic zone B3b;
Described membrane biological reaction district 4 is set to rectangle, and a side is connected with longitudinal exterior wall of described aerobic zone B3b, and other three side is adjacent and parallel with the horizontal exterior wall of described the 3rd training wall 9, the second partition wall 8 and described aerobic zone B3b respectively;
Between described membrane biological reaction district 4 and described the 3rd training wall 9, be also provided with the 3rd horizontal partition wall 10, the one end near described the 7th water hole 22 on described the 3rd partition wall 10 is provided with the 8th water hole;
Described membrane biological reaction district 4 is provided with film district water distribution weir gate 11 near a side of the horizontal exterior wall of described aerobic zone B3b, and described membrane biological reaction district 4 is provided with film district water outlet weir gate 12 near a side of described the 3rd partition wall 10;
Gap between described membrane biological reaction district 4 Shang Mo district water distribution weir gate 11 place one sides and the horizontal exterior wall of described aerobic zone B3b forms canal for water distribution 13, and a side at 4 Shang Mo district water outlet weir gate 12 places, described membrane biological reaction district and the gap between described the 3rd partition wall 10 form water channel road 14;
In described anaerobic zone A1a, anaerobic zone B1b, oxygen-starved area A2a, oxygen-starved area B2b, aerobic zone A3a and aerobic zone B3b, be equipped with push flowing diving mixer 15;
Between described anaerobic zone 1 and oxygen-starved area 2, be provided with the air lift unit I 25 of horizontal placement; The fluid inlet of described air lift unit I 25 is positioned at oxygen-starved area A2a, and the liquid outlet of described air lift unit I 25 is positioned at anaerobic zone A1a;
The air lift unit II 24 that is provided with horizontal placement between described oxygen-starved area 2 and aerobic zone 3, the fluid inlet of described air lift unit II 24 is positioned at aerobic zone B3b, and the liquid outlet of described air lift unit II 24 is positioned at oxygen-starved area A2a;
The longitudinal parallel connection in described membrane biological reaction district 4 is provided with a plurality of separate membrane biological reaction subregions; Each membrane biological reaction subregion is provided with film district water distribution weir gate 11 near a side of the horizontal exterior wall of described aerobic zone B3b, and each membrane biological reaction subregion is provided with film district water outlet weir gate 12 near a side of described the 3rd partition wall 10;
Described aerobic zone 3 is provided with blast aerator; Described blast aerator comprises the micro-pore aeration system of being located in aerobic zone 3 and is located at the gas blower outside aerobic zone 3;
In described oxygen-starved area 2, be provided with micro-pore aeration system;
As preferred embodiment a kind of, when design sludge concentration is lower, in described aerobic zone 3, be provided with mud enrichment region, described mud is established sludge refluxing apparatus in enrichment region, and the mud discharging mouth of described sludge refluxing apparatus is positioned at described anaerobic zone 1.
Utilize the CCFP-MBR shown in Fig. 1 to carry out a technique for sewage disposal, comprise the following steps:
(1) first sewage enter anaerobic zone A1a, mix with the phegma from oxygen-starved area A2a, by the stirring pushing effect of the push flowing diving mixer 15 that arranges in the A1a of anaerobic zone, along described the first training wall 5 is descending, flow, by described the 3rd water hole 16, enter anaerobic zone B1b afterwards, by the stirring pushing effect of the push flowing diving mixer 15 that arranges in the B1b of anaerobic zone, along described the first training wall 5 is up, flow; In the B1b of anaerobic zone, a sewage part is circulated in the A1a of anaerobic zone by described the 4th water hole 17, and a part enters oxygen-starved area 2 by described the first water hole 18;
(2) first the sewage from anaerobic zone B1b enter oxygen-starved area A2a, mix with the phegma from aerobic zone B3b, by the stirring pushing effect of the push flowing diving mixer 15 that arranges in the A2a of oxygen-starved area, along described the second training wall 7 is descending, flow, by described the 5th water hole 19, enter oxygen-starved area B2b afterwards, by the stirring pushing effect of the push flowing diving mixer 15 that arranges in the B2b of oxygen-starved area, along described the second training wall 7 is up, flow; In the B2b of oxygen-starved area, a sewage part is circulated in the A2a of oxygen-starved area by described the 6th water hole 20, and a part enters aerobic zone 3 by described the second water hole 21;
(3) first the sewage from oxygen-starved area B2b enter aerobic zone A3a, by the stirring pushing effect of the push flowing diving mixer 15 that arranges in the A3a of aerobic zone, along described the 3rd training wall 9 right laterals, flow, by described the 7th water hole 22, enter aerobic zone B3b afterwards, after partial concentration mud from membrane biological reaction district 4 mixes, by the stirring pushing effect of the push flowing diving mixer 15 that arranges in the B3b of aerobic zone, along described the 3rd training wall 9 left lateral, flow, then a part is circulated in the A3a of aerobic zone through described recycle ratio adjustable checkgate 23, a part flows along described the second partition wall 8 is descending, then along described canal for water distribution 13 right laterals, flow, in flow process, by described film district's water distribution weir gate 11, enter and in membrane biological reaction district 4, carry out solid-liquid separation, form local high microorganism concentration range, separated purifying waste water is expelled to outside battery limit (BL) by pump, the separated thickened sludge part Cong Mo district's water outlet weir gate forming 12 flows and is expelled to aerobic zone B3b from described the 8th water hole 26 along described water outlet channel 14 right laterals after discharging, after mixing with next aforementioned sewage in the A3a of aerobic zone, along described the 3rd training wall 9 left lateral, flow, residue thickened sludge is expelled to sludge thickener by mud overboard pump.
Adopt a kind of circulation flow ring-shaped membrane bioreactor (CCFP-MBR) and sewage treatment process as shown in Figure 1 to process 10000m
3the sanitary sewage of/d.
Design influent quality:
COD
cr400mg/L；NH
3-N40mg/L；TP3mg/L；SS180mg/L
Effluent quality requires: reach the one-level A standard in < < urban wastewater treatment firm pollutant emission standard > > (GB18918-2002).
Relevant design parameter is as follows: water inlet average discharge 416.67m
3/ h; Peak flow 658.33m
3/ h; Design anaerobic zone 1 mixed solution concentration of suspension MLSS is that 2600mg/L(actual motion can be by 2000～3000mg/L), oxygen-starved area 2 mixed solution concentration of suspension MLSS are that 5650mg/L(actual motion can be by 4800～6000mg/L), aerobic zone 3 mixed solution concentration of suspension MLSS are that 7000mg/L(actual motion can be by 7000～9000mg/L); The maximum sludge loading 0.13kgBOD in aerobic zone 3
5/ kgMLSSd; Anaerobic zone 1 hydraulic detention time 1.5h, basin's effective volume 625.00m
3; Oxygen-starved area 2 hydraulic detention time 3.23h, basin's effective volume 1345m
3; The hydraulic detention time 7.57h of aerobic zone 3, basin's effective volume 3153m
3; Design available depth 5.0m; The denitrification load span of oxygen-starved area 2 is 0.03～0.04kgNO
3 --N/kgMLSSd(20 ℃); Membrane biological reaction district 4 is provided with 4 Ge Mo districts, parallel running, design membrane flux 10～15L/m
2h; Oxygen-starved area 2 return current ratio of the mixed liquid 100%(actual motions can be by 50%～150%); Aerobic zone 3 return current ratio of the mixed liquid 150%(actual motions can be by 100%～200%).
Main units: 1 group of CCFP-MBR biochemical reaction tank as shown in Figure 1, overall size L * B * H=51.2m * 20m * 5.5m.
Major equipment: 15,2 of push flowing diving mixers are established in anaerobic zone 1, separate unit power 1.5kW; 15,2 of push flowing diving mixers are established in oxygen-starved area 2, separate unit power 1.1kW; 15,2 of push flowing diving mixers are established in aerobic zone 3, separate unit power 1.1kW; 25,1 groups, stripping reflux device is established in oxygen-starved area 2; 24,1 groups, stripping reflux device is established in aerobic zone; 11,4 of film district water distribution weir gates, B * H=600mm * 600mm, supporting manual opening-closing machine; 12,4 of film district water outlet weir gates, B * H=600mm * 600mm, supporting manual opening-closing machine; 23,1 of recycle ratio adjustable checkgates, B * H=500mm * 1200mm, supporting manual opening-closing machine; Some groups of immersion type membrane components (ultra filtration hollow fiber membrane), single group filtration area 25m
2; 3 of Root's blowers, air quantity 25.1m
3/ min, blast 6.0m, power 37kW.
Actual motion effect: ton water power consumption 0.2-42kw.h/m
3, effluent quality reaches the one-level A standard in < < urban wastewater treatment firm pollutant emission standard > > (GB18918-2002).
Adopt a kind of circulation flow ring-shaped membrane bioreactor (CCFP-MBR) and sewage treatment process as shown in Figure 1 to process 5000m
3the sanitary sewage of/d.
Design influent quality:
COD
cr350mg/L；NH
3-N35mg/L；TP4mg/L；SS200mg/L
Effluent quality requires: reach the one-level A standard in < < urban wastewater treatment firm pollutant emission standard > > (GB18918-2002).
Relevant design parameter is as follows: water inlet average discharge 208.33m
3/ h; Peak flow 362.50m
3/ h; Design anaerobic zone 1 mixed solution concentration of suspension MLSS is that 3000mg/L(actual motion can be by 2000～3000mg/L), design oxygen-starved area 2 mixed solution concentration of suspension MLSS are that 6000mg/L(actual motion can be by 4500～6000mg/L), design aerobic zone 3 mixed solution concentration of suspension MLSS are that 8000mg/L(actual motion can be by 7500～9000mg/L); The maximum sludge loading 0.145kgBOD in aerobic zone 3
5/ kgMLSSd; Anaerobic zone 1 hydraulic detention time 1.5h, basin's effective volume 312.5m
3; Oxygen-starved area 2 hydraulic detention time 2.15h, basin's effective volume 447.77m
3; The hydraulic detention time 4.96h of aerobic zone 3, basin's effective volume 1034.31m
3; Design available depth 5.0m; The denitrification load span of oxygen-starved area 2 is 0.03～0.035kgNO
3 --N/kgMLSSd(20 ℃); Membrane biological reaction district 4 is provided with 4 lattice membrane biological reaction subregions, parallel running, design membrane flux 10～15L/m
2h; Oxygen-starved area 2 return current ratio of the mixed liquid 100%(actual motions are according to 50%～100%); Aerobic zone 3 phegma reflux ratio 150%(actual motions are according to 100%～150%).
Main units: 1 group of CCFP-MBR biochemical reaction tank as shown in Figure 1, overall size L * B * H=24m * 15m * 5.5m.
Major equipment: 15,2 of push flowing diving mixers are established in anaerobic zone 1, separate unit power 0.75kW; 15,2 of push flowing diving mixers are established in oxygen-starved area 2, separate unit power 0.37kW; 15,2 of push flowing diving mixers are established in aerobic zone 3, separate unit power 0.37kW; 25,1 groups, stripping reflux device is established in oxygen-starved area 2; 24,1 groups, stripping reflux device is established in aerobic zone 3; 11,4 of film district water distribution weir gates, B * H=500mm * 500mm, supporting manual opening-closing machine; 12,4 of film district water outlet weir gates, B * H=500mm * 500mm, supporting manual opening-closing machine; 23,1 of recycle ratio adjustable checkgates, B * H=300mm * 1000mm, supporting manual opening-closing machine; Some groups of immersion type membrane components (ultra filtration hollow fiber membrane), single group filtration area 25m
2; 3 of Root's blowers, air quantity 16.5m
3/ min, blast 6.0m, power 30kW.
Actual motion effect: ton water power consumption 0.30kw.h/m
3, effluent quality reaches the one-level A standard in < < urban wastewater treatment firm pollutant emission standard > > (GB18918-2002).
Adopt a kind of circulation flow ring-shaped membrane bioreactor (CCFP-MBR) and sewage treatment process as shown in Figure 1 to process 30000m
3the sanitary sewage of/d.
Design influent quality:
COD
cr450mg/L；NH
3-N40mg/L；TP4mg/L；SS200mg/L
Effluent quality requires: reach the one-level A standard in < < urban wastewater treatment firm pollutant emission standard > > (GB18918-2002).
Relevant design parameter is as follows: water inlet average discharge 1250m
3/ h; Peak flow 1812.50m
3/ h; Design anaerobic zone 1 mixed solution concentration of suspension MLSS is that 2000mg/L(actual motion can be by 1800～3000mg/L), design oxygen-starved area 2 mixed solution concentration of suspension MLSS are that 6000mg/L(actual motion can be by 4800～6000mg/L), design aerobic zone 3 mixed solution concentration of suspension MLSS are that 8000mg/L(actual motion can be by 7500～9000mg/L); The maximum sludge loading 0.139kgBOD in aerobic zone 3
5/ kgMLSSd; Anaerobic zone 1 hydraulic detention time 1.5h, basin's effective volume 1875.00m
3; Oxygen-starved area 2 hydraulic detention time 2.41h, basin's effective volume 3012.68m
3; The hydraulic detention time 6.67h of aerobic zone 3, basin's effective volume 8340.84m
3; Design available depth 5.5m; The denitrification load span of oxygen-starved area 2 is 0.035～0.04kgNO
3 --N/kgMLSSd(20 ℃); Membrane biological reaction district 4 is provided with 5 lattice membrane biological reaction subregions, parallel running, design membrane flux 10～15L/m
2h; Oxygen-starved area 2 return current ratio of the mixed liquid 50%(actual motions can be by 50%～100%); Aerobic zone 3 return current ratio of the mixed liquid 200%(actual motions can be by 100%～200%).
Main units: CCFP-MBR biochemical reaction tank as shown in Figure 1,2 sets in parallel operation, single packet size L * B * H=38m * 20m * 6.0m.
Major equipment: 4 of push flowing diving mixers (2 every group), separate unit power 2.2kW are established in anaerobic zone 1; 4 of push flowing diving mixers (2 every group), separate unit power 1.1kW are established in oxygen-starved area 2; 4 of push flowing diving mixers (2 every group), separate unit power 2.2kW are established in aerobic zone 3; 25,1 groups, stripping reflux device is established in oxygen-starved area 2; 24,1 groups, stripping reflux device is established in aerobic zone 3; 11,4 of film district water distribution weir gates, B * H=500mm * 500mm, supporting manual opening-closing machine; 12,4 of film district water outlet weir gates, B * H=500mm * 500mm, supporting manual opening-closing machine; 23,1 of recycle ratio adjustable checkgates, B * H=500mm * 1200mm, supporting manual opening-closing machine; Some groups of immersion type membrane components (ultra filtration hollow fiber membrane), single group filtration area 25m
2; 6 of Root's blowers, air quantity 48.9m
3/ min, blast 7.0m, power 90kW.
Actual motion effect: ton water power consumption 0.31kw.h/m
3, effluent quality reaches the one-level A standard in < < urban wastewater treatment firm pollutant emission standard > > (GB18918-2002).
Claims (11)
1. a circulation flow ring-shaped membrane bioreactor, is characterized in that, comprises anaerobic zone (1), oxygen-starved area (2), aerobic zone (3) of setting up successively and is arranged on the membrane biological reaction district (4) in aerobic zone (3); Between described anaerobic zone (1) and oxygen-starved area (2), be provided with the first partition wall (6) longitudinally, one end of described the first partition wall (6) is provided with the first water hole (18); Between described oxygen-starved area (2) and aerobic zone (3), be provided with the second partition wall (8) longitudinally, one end of described the second partition wall (8) is provided with the second water hole (21).
2. a kind of circulation flow ring-shaped membrane bioreactor as claimed in claim 1, it is characterized in that, described anaerobic zone (1) is provided with the first training wall (5) longitudinally, by described the first training wall (5), anaerobic zone (1) is divided into the anaerobic zone A(1a in left side) and the anaerobic zone B(1b on right side); One end of described the first training wall (5) arranges the 3rd water hole (16), and the other end arranges the 4th water hole (17).
3. a kind of circulation flow ring-shaped membrane bioreactor as claimed in claim 2, it is characterized in that, described oxygen-starved area (2) is provided with the second training wall (7) longitudinally, by described the second training wall (7), oxygen-starved area (2) is divided into the oxygen-starved area A(2a in left side) and the oxygen-starved area B(2b on right side); One end of described the second training wall (7) arranges the 5th water hole (19), and the other end arranges the 6th water hole (20).
4. a kind of circulation flow ring-shaped membrane bioreactor as claimed in claim 3, it is characterized in that, described aerobic zone (3) is provided with the 3rd horizontal training wall (9), by described the 3rd training wall (9), aerobic zone (3) is divided into the aerobic zone A(3a of upside) and the aerobic zone B(3b of downside); The upper one end near described the second partition wall (8) of described the 3rd training wall (9) is provided with recycle ratio adjustable checkgate (23), and the other end arranges the 7th water hole (22).
5. a kind of circulation flow ring-shaped membrane bioreactor as claimed in claim 4, is characterized in that, described membrane biological reaction district (4) is positioned at described aerobic zone B(3b); Described membrane biological reaction district (4) is set to rectangle, one side and described aerobic zone B(3b) longitudinal exterior wall be connected, other three side respectively with described the 3rd training wall (9), the second partition wall (8) and described aerobic zone B(3b) horizontal exterior wall adjacent and parallel.
6. a kind of circulation flow ring-shaped membrane bioreactor as claimed in claim 5, it is characterized in that, between described membrane biological reaction district (4) and described the 3rd training wall (9), be also provided with the 3rd horizontal partition wall (10), the upper one end near described the 7th water hole (22) of described the 3rd partition wall (10) is provided with the 8th water hole (26); The close described aerobic zone B(3b in described membrane biological reaction district (4)) laterally a side of exterior wall is provided with film district water distribution weir gate (11), and described membrane biological reaction district (4) is provided with film district water outlet weir gate (12) near a side of described the 3rd partition wall (10); Described membrane biological reaction district (4) Shang Mo district water distribution weir gate (11) place one side and described aerobic zone B(3b) horizontal exterior wall between gap form canal for water distribution (13), the gap between a side at described membrane biological reaction district (4) Shang Mo district water outlet weir gate (12) place and described the 3rd partition wall (10) forms water channel road (14).
7. a kind of circulation flow ring-shaped membrane bioreactor as claimed in claim 6, it is characterized in that described anaerobic zone A(1a), anaerobic zone B(1b), oxygen-starved area A(2a), oxygen-starved area B(2b), aerobic zone A(3a) and aerobic zone B(3b) in be equipped with push flowing diving mixer (15).
8. a kind of circulation flow ring-shaped membrane bioreactor as claimed in claim 7, is characterized in that, is provided with the air lift unit I (25) of horizontal placement between described anaerobic zone (1) and oxygen-starved area (2); The fluid inlet of described air lift unit I (25) is positioned at oxygen-starved area A(2a), the liquid outlet of described air lift unit I (25) is positioned at anaerobic zone A(1a); Between described oxygen-starved area (2) and aerobic zone (3), be provided with the air lift unit II (24) of horizontal placement, the fluid inlet of described air lift unit II (24) is positioned at aerobic zone B(3b), the liquid outlet of described air lift unit II (24) is positioned at oxygen-starved area A(2a).
9. a kind of circulation flow ring-shaped membrane bioreactor as claimed in claim 8, is characterized in that, described membrane biological reaction district (4) longitudinally parallel connection is provided with a plurality of separate membrane biological reaction subregions; Each membrane biological reaction subregion is near described aerobic zone B(3b) a side of horizontal exterior wall be provided with film district water distribution weir gate (11), each membrane biological reaction subregion is provided with film district water outlet weir gate (12) near a side of described the 3rd partition wall (10).
10. a kind of circulation flow ring-shaped membrane bioreactor as claimed in claim 9, is characterized in that, described aerobic zone (3) are provided with blast aerator; Described blast aerator comprises to be located at the micro-pore aeration system in aerobic zone (3) and to be located at the outer gas blower in aerobic zone (3); Described oxygen-starved area is provided with micro-pore aeration system in (2).
11. a kind of circulation flow ring-shaped membrane bioreactors as claimed in claim 10, it is characterized in that, when design sludge concentration is lower, described aerobic zone is provided with mud enrichment region in (3), described mud is established sludge refluxing apparatus in enrichment region, and the mud discharging mouth of described sludge refluxing apparatus is positioned at described anaerobic zone (1).
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| CN201320685388.4U CN203558920U (en) | 2013-10-30 | 2013-10-30 | Circulation flow annular type membrane bioreactor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104276661A (en) * | 2014-10-27 | 2015-01-14 | 中国市政工程东北设计研究总院 | Sectional A2/O sewage treatment system and sewage treatment method |
| CN112093892A (en) * | 2020-09-16 | 2020-12-18 | 江门市新会区龙泉污水处理有限公司 | Membrane feeding mode of MBR clear water |
-
2013
- 2013-10-30 CN CN201320685388.4U patent/CN203558920U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104276661A (en) * | 2014-10-27 | 2015-01-14 | 中国市政工程东北设计研究总院 | Sectional A2/O sewage treatment system and sewage treatment method |
| CN104276661B (en) * | 2014-10-27 | 2016-05-18 | 中国市政工程东北设计研究总院 | Segmented A2/ O sewage disposal system and sewage water treatment method |
| CN112093892A (en) * | 2020-09-16 | 2020-12-18 | 江门市新会区龙泉污水处理有限公司 | Membrane feeding mode of MBR clear water |
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