CN104671601B - A kind of many echelons Anoxic/Aerobic bioreactor and control method thereof - Google Patents
A kind of many echelons Anoxic/Aerobic bioreactor and control method thereof Download PDFInfo
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- CN104671601B CN104671601B CN201510048460.6A CN201510048460A CN104671601B CN 104671601 B CN104671601 B CN 104671601B CN 201510048460 A CN201510048460 A CN 201510048460A CN 104671601 B CN104671601 B CN 104671601B
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- 238000000034 method Methods 0.000 title claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 238000010992 reflux Methods 0.000 claims description 25
- 239000010802 sludge Substances 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 14
- 238000005276 aerator Methods 0.000 claims description 10
- 238000005273 aeration Methods 0.000 claims description 9
- 239000010865 sewage Substances 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052799 carbon Inorganic materials 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 238000012545 processing Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000004065 wastewater treatment Methods 0.000 abstract description 2
- 238000005243 fluidization Methods 0.000 abstract 1
- 239000010842 industrial wastewater Substances 0.000 abstract 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 abstract 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 241000283690 Bos taurus Species 0.000 description 1
- 230000032770 biofilm formation Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 230000007269 microbial metabolism Effects 0.000 description 1
- 238000006396 nitration reaction Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
A kind of many echelons Anoxic/Aerobic bioreactor and control method thereof, belong to sewage treatment area. Reactor body, mainly by many echelons anoxic_oxic process, adds floating stuffing and finally makes the treatment effect of reactor strengthen in reactor. Reactor body is 3 sections of water inlet aerobic design forms of multi-stage anaerobic substantially, and each reaction tank is separate to be interknited again. Step feed technology is combined with organism fluidization bed technique and is aided with attached sewage-treatment plant by the present invention, reduces the floor space processing structures under the situation improving sewage treating efficiency. Many echelons Anoxic/Aerobic bioreactor can make full use of carbon source, improves the efficiency of denitrogenation dephosphorizing, makes wastewater treatment efficiency improve. The close structure of reactor of the present invention, multiple water intake mode and intake method can change reaction tank effect at any time, and processing mode is very flexible. It is applicable to process suitable in dephosphorization fields such as medium and small town domestic sewage, livestock-raising sewage and industrial wastewater advanced nitrogens.
Description
Technical field:
The present invention relates to a kind of many echelons Anoxic/Aerobic bioreactor and control method thereof, belong to sewage treatment area.
Background technology:
The method of current sewage disposal mainly has activated sludge process and the big class of biomembrance process two: activated sludge process is from 20 beginnings of the century since Britain starts, development through decades is reformed and has been had the multiple method of operation, simultaneously because its fabulous wastewater treatment efficiency and be increasingly becoming the technique of comparative maturity of everybody accreditation; Biomembrance process is a kind of technique utilizing the biology being attached on filler that water body is purified, and is also developed rapidly in recent years and improves. The wide variety of technique of Aerobic Process for Treatment has conventional activated sludge process, oxidation ditch process, SBR technique, A/O, A2The biological treatment such as/O, contact oxidation method.
From operative practice for many years, though activated sludge process is comparatively ripe, but there is also a lot of shortcoming and defect, as big in Aeration tank volume, floor space is high, capital cost is high, simultaneously that the adaptability of water quality, water yield change is relatively low, operational effect is subject to the impact etc. of water quality, water yield change. In view of above-mentioned factor, this sewage water treatment method is replaced by biomembrance process later gradually. Biomembrance process compensate for a lot of not enough of activated sludge process, as it good stability, bear organic loading and hydraulic loading shock ability strong, without sludge bulking, without refluxing, organic clearance is high, the advantages such as the volume of reactor is little, sewage treatment plant's floor space is little. But biomembrance process also has its distinctive defect, the filtrate in biofilter easily blocks, need periodically backwash, fix that the replacing of aerator under filler and filler is more difficult simultaneously, the carrier granular only less stable etc. of competence exertion effect, technique under fluidized state in biological fluidized-bed reactor.
Summary of the invention:
The present invention relates to a kind of many echelons Anoxic/Aerobic bioreactor and control method thereof, many echelons Anoxic/Aerobic bioreactor has outstanding nitrogen removal performance and denitrification dephosphorization performance, and the sewage for relatively low ratio of carbon to ammonium has certain process advantage.
A kind of many echelons Anoxic/Aerobic bioreactor, is made up of first paragraph anoxic reacter, first paragraph aerobic reactor, second segment anoxic reacter, second segment aerobic reactor, the 3rd section of anoxic reacter, the 3rd section of aerobic reactor, second pond, water inlet pipe, flow distributor, nitrification liquid reflux pump, sludge reflux pump and tube aerator; The volumetric ratio of first paragraph anoxic reacter, first paragraph aerobic reactor, second segment anoxic reacter, second segment aerobic reactor, the 3rd section of anoxic reacter, the 3rd section of aerobic reactor and second pond is followed successively by 1:2:1:3:1:3:1; Former water enters flow distributor along water inlet pipe, respectively enters first paragraph anoxic reacter, second segment anoxic reacter, the 3rd section of anoxic reacter by different allocation proportions under the control of flow distributor; Each anoxic reacter is all adjacent with corresponding aerobic reactor, and second pond and the 3rd section of aerobic reactor are adjacent; First paragraph anoxic reacter is communicated with first paragraph aerobic reactor by outlet, second segment anoxic reacter communicates with first paragraph aerobic reactor and second segment aerobic reactor respectively through outlet, 3rd section of anoxic reacter communicates with second segment aerobic reactor and the 3rd section of aerobic reactor respectively through outlet, and second pond is connected by outlet and the 3rd section of aerobic reactor; Being provided with nitrification liquid reflux pump in 3rd section of aerobic reactor, nitrification liquid reflux pump is communicated with first paragraph anoxic reacter by pipeline; Being provided with sludge reflux pump in second pond, sludge reflux pump is connected with first paragraph anoxic reacter by pipeline; The bottom of first paragraph aerobic reactor, second segment aerobic reactor and the 3rd section of aerobic reactor and pool wall are equipped with tube aerator, and each reactor connector place is provided with annular aeration tube. First paragraph anoxic reacter, second segment anoxic reacter and the 3rd section of anoxic reacter are provided with agitator.
A kind of control method of many echelons Anoxic/Aerobic bioreactor, the former water C/N of amount of inlet water basic of distribution controls than by flow distributor 9, and as C/N≤1:1, three sections of anoxic zone influent flow rate distribution ratios are 1:1:1; When C/N is 1:1-4:1, three sections of anoxic zone influent flow rate distribution ratios are 2:2:1; As C/N >=4:1, three sections of anoxic zone influent flow rate distribution ratios are 4:2:1.
The method have the advantages that many echelons Anoxic/Aerobic bioreactor plane is square, reaction member is in integrative-structure, compact conformation, and floor space is concentrated, and reaches the treatment effect of optimum. With the distribution of the flow that flow distributor controls, by the monitoring to water quality, the multipoint water feeding distribution ratio of liquid flow to most of sewage. Multipoint water feeding makes system that the demand of carbon source be balanced more, and is prevented effectively from or reduces the situation that the denitrification effect caused because of carbon source deficiency reduces. Aerobic reactor is provided with tube aerator, adds ventilation, provide oxygen for microbial metabolism, and the stirring action of tube aerator can improve mass transfer. Annular aeration tube adds aeration rate in water. Nitrification liquid reflux pump and sludge reflux pump can make mixed-liquor return, reach the purpose of denitrification denitrogenation and denitrification dephosphorization.
Accompanying drawing illustrates:
Fig. 1 many echelons Anoxic/Aerobic bioreactor plane graph.
1, first paragraph anoxic reacter, 2, first paragraph aerobic reactor, 3 second segment anoxic reacters, 4, second segment aerobic reactor, the 5, the 3rd section of anoxic reacter, the 6, the 3rd section of aerobic reactor, 7, second pond, 8, water inlet pipe, 9, flow distributor, 10, agitator, 11, nitrification liquid reflux pump, 12, sludge reflux pump, 13, tube aerator, 14, annular aeration tube.
Detailed description of the invention:
A kind of many echelons Anoxic/Aerobic bioreactor, is made up of first paragraph anoxic reacter 1, first paragraph aerobic reactor 2, second segment anoxic reacter 3, second segment aerobic reactor 4, the 3rd section of anoxic reacter 5, the 3rd section of aerobic reactor 6, second pond 7, water inlet pipe 8, flow distributor 9, nitrification liquid reflux pump 11, sludge reflux pump 12 and tube aerator 13; The volumetric ratio of first paragraph anoxic reacter 1, first paragraph aerobic reactor 2, second segment anoxic reacter 3, second segment aerobic reactor 4, the 3rd section of anoxic reacter 5, the 3rd section of aerobic reactor 6 and second pond 7 is followed successively by 1:2:1:3:1:3:1; Former water enters flow distributor 9 along water inlet pipe 8, respectively enters first paragraph anoxic reacter 1, second segment anoxic reacter 3, the 3rd section of anoxic reacter 5 by different allocation proportions under the control of flow distributor 9; Each anoxic reacter is all adjacent with corresponding aerobic reactor, and second pond 7 is adjacent with the 3rd section of aerobic reactor 6; First paragraph anoxic reacter 1 is communicated with first paragraph aerobic reactor 2 by outlet, second segment anoxic reacter 3 communicates with first paragraph aerobic reactor 2 and second segment aerobic reactor 4 respectively through outlet, 3rd section of anoxic reacter 5 communicates with second segment aerobic reactor 4 and the 3rd section of aerobic reactor 6 respectively through outlet, and second pond 7 is connected by outlet and the 3rd section of aerobic reactor 6; Being provided with nitrification liquid reflux pump 11 in 3rd section of aerobic reactor 6, nitrification liquid reflux pump 11 is communicated with first paragraph anoxic reacter 1 by pipeline; Being provided with sludge reflux pump 12 in second pond 7, sludge reflux pump 12 is connected with first paragraph anoxic reacter 1 by pipeline; The bottom of first paragraph aerobic reactor 2, second segment aerobic reactor 4 and the 3rd section of aerobic reactor 6 and pool wall are equipped with tube aerator 13, and each reactor connector place is provided with annular aeration tube. First paragraph anoxic reacter 1, second segment anoxic reacter 3 and the 3rd section of anoxic reacter 5 are provided with agitator 10.
With the distribution of the flow that flow distributor 9 controls, by the monitoring to water quality, the multipoint water feeding distribution ratio of liquid flow to most of sewage. The former water C/N of amount of inlet water basic of distribution controls than by flow distributor 9, and as C/N≤1:1, three sections of anoxic zone influent flow rate distribution ratios are 1:1:1; When C/N is 1:1-4:1, three sections of anoxic zone influent flow rate distribution ratios are 2:2:1; As C/N >=4:1, three sections of anoxic zone influent flow rate distribution ratios are 4:2:1. Being 200% in nitrification liquid reflux pump 11 reflux ratio, aerobic zone reactor floating stuffing filling rate 30%, anoxic zone reactor floating stuffing filling rate 50%, when DO is 2mg/L, this reaction unit denitrification percent is about 97.7%. The average TN of water outlet is about 8-10mg/L, BOD5About 10mg/L, CODcr are about 50mg/L, are up to state standards. Utilize " microenvironment " of the biofilm formation of attachment on extraordinary suspended filter material to realize synchronous nitration denitrification denitrogenation, realize the purpose of denitrogenation dephosphorizing in conjunction with biological fluidized bed and multi-section water-inlet technique. Due to the collision in water of the extraordinary floating stuffing and shear action, making dissolved oxygen more, the utilization ratio of oxygen improves, and aeration efficiency improves 20-30% than packless aeration.Floor space is concentrated, and reaches the treatment effect of optimum.
Example:
With cattle farm, Shenyang City sewage for processing object, COD=1500mg/L, TN=278mg/L, TP=24mg/L, C/N=5.30, it is 0.5 at return sludge ratio, inner loop ratio is 0.5, and bioreactor main body unit all has extraordinary suspended filter material to fill, aerobic zone filling rate 30%, anoxic zone filling rate 50%, DO is 2mg/L temperature is about 25 degree. Starting stable rear operation 3 months continuously, result of the test shows, water outlet COD=50mg/L, TN=8-10mg/L, and system is stable to TN, TP removal effect, and result of the test is up to state standards.
Claims (2)
1. echelon Anoxic/Aerobic bioreactor more than a kind, it is characterised in that be made up of first paragraph anoxic reacter (1), first paragraph aerobic reactor (2), second segment anoxic reacter (3), second segment aerobic reactor (4), the 3rd section of anoxic reacter (5), the 3rd section of aerobic reactor (6), second pond (7), water inlet pipe (8), flow distributor (9), nitrification liquid reflux pump (11), sludge reflux pump (12) and tube aerator (13); The volumetric ratio of first paragraph anoxic reacter (1), first paragraph aerobic reactor (2), second segment anoxic reacter (3), second segment aerobic reactor (4), the 3rd section of anoxic reacter (5), the 3rd section of aerobic reactor (6) and second pond (7) is followed successively by 1:2:1:3:1:3:1; Former water enters flow distributor (9) along water inlet pipe (8), respectively enters first paragraph anoxic reacter (1), second segment anoxic reacter (3), the 3rd section of anoxic reacter (5) by different allocation proportions under the control of flow distributor (9); Each anoxic reacter is all adjacent with corresponding aerobic reactor, and second pond and the 3rd section of aerobic reactor are adjacent; First paragraph anoxic reacter (1) is communicated with first paragraph aerobic reactor (2) by outlet, second segment anoxic reacter (3) communicates with first paragraph aerobic reactor (2) and second segment aerobic reactor (4) respectively through outlet, 3rd section of anoxic reacter (5) communicates with second segment aerobic reactor (4) and the 3rd section of aerobic reactor (6) respectively through outlet, and second pond is connected by outlet and the 3rd section of aerobic reactor (6); Being provided with nitrification liquid reflux pump (11) in 3rd section of aerobic reactor (6), nitrification liquid reflux pump (11) is communicated with first paragraph anoxic reacter (1) by pipeline; Being provided with sludge reflux pump (12) in second pond (7), sludge reflux pump (12) is connected with first paragraph anoxic reacter (1) by pipeline; The bottom of first paragraph aerobic reactor (2), second segment aerobic reactor (4) and the 3rd section of aerobic reactor (6) and pool wall are equipped with tube aerator (13); Each reactor connector place is provided with annular aeration tube (14); First paragraph anoxic reacter (1), second segment anoxic reacter (3) and the 3rd section of anoxic reacter (5) are provided with agitator (10).
2. the control method of a kind of many echelons Anoxic/Aerobic bioreactor according to claim 1, it is characterized in that the former water C/N of amount of inlet water basic of distribution controls than by flow distributor 9, as C/N≤1:1, three sections of anoxic zone influent flow rate distribution ratios are 1:1:1; When C/N is 1:1-4:1, three sections of anoxic zone influent flow rate distribution ratios are 2:2:1; As C/N >=4:1, three sections of anoxic zone influent flow rate distribution ratios are 4:2:1.
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| CN111233151A (en) * | 2020-03-17 | 2020-06-05 | 山东太平洋环保股份有限公司 | Efficient synchronous nitrogen and phosphorus removal system and method for high-nitrogen and phosphorus wastewater |
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| CN102583897B (en) * | 2012-03-02 | 2014-04-02 | 北京工业大学 | Device and method for strengthening A2/O denitrification |
| CN103435231B (en) * | 2013-09-05 | 2014-12-10 | 中国电建集团中南勘测设计研究院有限公司 | Intensive nitrogen-phosphorus removing membrane biological reaction device and sewage treatment method |
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Effective date of registration: 20180515 Address after: 710000 Shaanxi Xi'an high tech Zone, south of Tang Yan South Road, Yat Chui yuan - Xi'an (phase two) second 1 units, 6 floors 10619 rooms. Patentee after: Shaanxi lance cavalry Network Technology Co., Ltd. Address before: 110168 Shenyang Construction University, 9 Hunnan Road, Hunnan New District, Shenyang, Liaoning Patentee before: Shenyang Building Univ. |
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Effective date of registration: 20180712 Address after: 101200 three, unit three, Ying Valley Center, 3 north cultural street, Pinggu, Beijing, 1601 Patentee after: Ren Jie Address before: 710000 Shaanxi Xi'an high tech Zone, south of Tang Yan South Road, Yat Chui yuan - Xi'an (phase two) second 1 units, 6 floors 10619 rooms. Patentee before: Shaanxi lance cavalry Network Technology Co., Ltd. |
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