CN102826653B - Denitrification/dephosphorization bioreactor and sewage treatment method with same - Google Patents
Denitrification/dephosphorization bioreactor and sewage treatment method with same Download PDFInfo
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- CN102826653B CN102826653B CN201210278596.2A CN201210278596A CN102826653B CN 102826653 B CN102826653 B CN 102826653B CN 201210278596 A CN201210278596 A CN 201210278596A CN 102826653 B CN102826653 B CN 102826653B
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- zone
- limbers
- aerobic zone
- oxygen
- wall
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- 239000010865 sewage Substances 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000010802 sludge Substances 0.000 claims abstract description 21
- 238000010992 reflux Methods 0.000 claims abstract description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 35
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 22
- 229910052698 phosphorus Inorganic materials 0.000 claims description 22
- 239000011574 phosphorus Substances 0.000 claims description 22
- 229910052757 nitrogen Inorganic materials 0.000 claims description 19
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 8
- 230000000630 rising effect Effects 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 6
- 238000005276 aerator Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 7
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract 1
- 230000008569 process Effects 0.000 description 8
- 238000005273 aeration Methods 0.000 description 5
- 150000002829 nitrogen Chemical class 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 2
- 230000000813 microbial effect Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 210000002249 digestive system Anatomy 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention relates to sewage treatment, particularly a denitrification/dephosphorization bioreactor and a sewage treatment method with the same. The invention aims to provide a denitrification/dephosphorization bioreactor which has the advantages of low cost, low energy consumption, simple structure and good treatment effect. The denitrification/dephosphorization bioreactor comprises a water inlet pipe, an anaerobic zone, an anoxic zone, an aerobic zone, a settling zone and a water outlet pipe in the water body flow direction, wherein the anaerobic zone, anoxic zone, aerobic zone and settling zone are separated by zone walls; and each zone wall is provided with water through holes. The invention also aims to provide a sewage treatment method with the denitrification/dephosphorization bioreactor. By adopting the sludge self-reflux and air stripping hydraulic circulation mode, the invention saves the high-flow circulating pumps, thereby saving the investment cost as well as maintenance cost and power cost. Thus, the invention provides an ideal device for municipal domestic sewage treatment.
Description
Technical field
The present invention relates to sewage disposal, a kind of method that is specifically related to nitrogen and phosphorus removal bio reaction unit and disposes of sewage with it.
Background technology
Biological denitrification process is generally divided into aerobic nitrification stage and anaerobic/anoxic denitrification stage, in the nitrated stage, and the NH in sewage
4-N is NO by microbial transformation
2 -and NO
3 -; In the denitrification stage, the NO in sewage
2 -and NO
3 -by microbial transformation, be N
2.Biological Phosphorus Removal Process is generally divided into aerobic excess and inhales phosphorus stage and anaerobic phosphorus release stage.Hence one can see that, and the biological carbon and phosphorous removal process need of sewage is aerobic-alternate environment of anaerobic/anoxic.
The alternate environment of-anaerobic/anoxic aerobic for realizing, existing nitrogen and phosphorus removal bio reaction unit is many arranges a plurality of reaction zones along water body flow direction in device, artificially builds aerobic, anoxic and anaerobic environment.This kind of biological reaction apparatus has advantages of that strengthening Elementary Function, Nitrogen/Phosphorus Removal are stable.But in order to improve the effect of denitrogenation dephosphorizing, often adopt in two ways: a kind of be in device, repeat to arrange a plurality of aerobic-anaerobic/anoxic reaction zone, this kind of mode increased the complicacy of device; Another kind is to adopt refluxing unit to make Digestive system and sludge reflux circulation, and this kind of mode increased cost of investment and the backflow energy consumption of equipment.
Summary of the invention
An object of the present invention is to overcome above-mentioned the deficiencies in the prior art, the nitrogen and phosphorus removal bio reaction unit that a kind of cost is low, energy consumption is little, simple in structure and treatment effect is good is provided.
For achieving the above object, the invention provides a kind of nitrogen and phosphorus removal bio reaction unit, comprise the water inlet pipe, anaerobic zone, oxygen-starved area, aerobic zone, settling region and the rising pipe that along water body flow direction, sequentially arrange, described anaerobic zone, oxygen-starved area, aerobic zone and settling region are separated by each trivial wall, it is characterized in that: described water inlet pipe is stretched in described anaerobic zone by the wall bottom, district of described anaerobic zone, the wall top, district of described anaerobic zone is provided with the first limbers, and described the first limbers is communicated with described anaerobic zone and described oxygen-starved area; On district's wall of described oxygen-starved area, edge is higher than described the first limbers, and the wall bottom, district of described oxygen-starved area is provided with the second limbers; On district's wall of described aerobic zone, edge is higher than edge on district's wall of described oxygen-starved area, the wall bottom, district of described aerobic zone is provided with the 3rd limbers and four-way water hole, described the 3rd limbers is higher than described the second limbers, described four-way water hole is lower than described the second limbers, described aerobic zone is provided with blast aerator, and described blast aerator is arranged on higher than described four-way water hole and lower than the position of described the second limbers; The wall bottom, district of described settling region is to aerobic zone lopsidedness, and is connected with the lower rim in described four-way water hole, and the top of described settling region is connected with described rising pipe.
Preferably, described anaerobic zone, oxygen-starved area, aerobic zone and settling region form sleeve-like configuration.
More electedly, the quantity in described the first limbers, the second limbers, the 3rd limbers and four-way water hole is all more than 1, uniform along each trivial wall girth.
Preferably, the bottom of described aerobic zone is provided with submersible sewage pump, and the outlet of described submersible sewage pump is connected with one end of sludge pipe, and the other end of described sludge pipe stretches in anaerobic zone.
Preferably, the bottom of described aerobic zone is provided with sludge out pipe, and one end of described sludge out pipe is in described aerobic zone, and the other end stretches out biological reaction apparatus and is connected with controller.
Preferably, the top of described settling region is provided with overflow weir.
Preferably, the bottom of described anaerobic zone and described oxygen-starved area is provided with agitator under liquid.
Preferably, the lower region wall of described settling region and the angle of horizontal plane are 60 °.
Another object of the present invention is to provide a kind of method that adopts above-mentioned nitrogen and phosphorus removal bio reaction unit to dispose of sewage, and comprises the following steps:
A, sewage are 1 ~ 2 hour in the residence time of anaerobic zone;
B, sewage are 1 ~ 2 hour in the residence time of oxygen-starved area;
C, sewage are 5 ~ 6 hours in the residence time of aerobic zone;
D, sewage are 2 ~ 3 hours in the residence time of settling region;
The gas-water ratio of e, aerobic zone is 5:1 ~ 10:1;
The nitrification liquid reflux ratio of f, aerobic zone is 50% ~ 100%, and the return sludge ratio of settling region is 100% ~ 200%.
If adopt the phosphorus content of the sewage after aforesaid method is processed to meet the demands, preferably in aerobic zone and settling region, add polymerize aluminum chloride, the add-on of described polymerize aluminum chloride is 20 ~ 50mg/L sewage load.
Beneficial effect:
Compared with prior art, nitrogen and phosphorus removal bio reaction unit provided by the invention has the following advantages:
1, nitrification liquid is from refluxing: water body is behind inflow aerobic zone, oxygen-starved area, at blast aerator, blast under the castering action of gas, part water body is back to oxygen-starved area by edge on district's wall of oxygen-starved area, realized nitrated-denitrifying alternate functions, COD in former water and nitrogen are obtained effective separated, this reflux course does not need to use refluxing unit, has not only saved investment cost, and saved upkeep cost and the electricity charge, reduced running cost;
2, automatic sludge returning: the inclined design of lower region, settling region wall can make the mud that flows into settling region automatically collect and slip into aerobic zone, has saved mud collecting device, has scraped mud equipment and refluxing unit, has reduced running cost;
3, owing to having saved some equipment, the process of denitrogenation dephosphorizing is completed under the relatively low state of energy consumption, meet the policy of the national energy-saving and emission-reduction of advocating;
4, with respect to the design side by side of each reaction zone, sleeve-like configuration provided by the invention add along the uniform limbers of wall girth, district, make water body mobile speed between each reaction zone faster, mix more abundant, thereby improved the efficiency of denitrogenation dephosphorizing.
Accompanying drawing explanation
Fig. 1 is the vertical view of the embodiment of the present invention;
Fig. 2 is the A-A sectional view of Fig. 1.
Each component names in figure:
1. anaerobic zone, 2. oxygen-starved area, 3. aerobic zone, 4. settling region, 5. the first limbers, 6. the second limbers, 7. the 3rd limbers, 8. four-way water hole, 9. inlet pipe, 10. aeration tube, 11. bases, 12. submersible sewage pumps, 13. sludge pipes, 14. sludge out pipe, 15. controllers, 16. water inlet pipes, 17. overflow weirs, 18. rising pipes.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail, and following examples are explanation of the invention, and the present invention is not limited to following examples.
As depicted in figs. 1 and 2, be a kind of structural representation of the present invention, this nitrogen and phosphorus removal bio reaction unit is circular sleeve shape structure, the center drum of device is anaerobic zone 1, is enclosed within its outside cylinder and is followed successively by oxygen-starved area 2, aerobic zone 3 and settling region 4.The barrel top of anaerobic zone 1 evenly has 13 the first limbers 5 along girth, on the barrel of oxygen-starved area 2, edge is higher than the first limbers 5 and lower than edge on the barrel of aerobic zone 3, the barrel bottom of oxygen-starved area 2 evenly has 19 the second limbers 6 along girth, the barrel bottom of aerobic zone 3 evenly has 32 the 3rd limbers 7 in the position higher than the second limbers 6 along girth, the barrel bottom of aerobic zone 3 evenly has 32 four-way water holes 8 in the position lower than the second limbers 6 along girth, the barrel bottom of settling region 4 is 3 lopsidedness to aerobic zone, angle of inclination is 60 °, and be connected with the lower rim in four-way water hole 8.
In aerobic zone 3, higher than four-way water hole 8 and lower than the position of the second limbers 6, be provided with aerating apparatus, this aerating apparatus comprises inlet pipe 9 and is distributed in the aeration tube 10 in aerobic zone, and aeration tube 10 is supported by the base 11 that is arranged on 3 bottoms, aerobic zone.In aerobic zone, 3 bottom is provided with submersible sewage pump 12, and the outlet of submersible sewage pump 12 is connected with one end of sludge pipe 13, and the other end of sludge pipe 13 stretches in anaerobic zone 1.The bottom of aerobic zone 3 is also provided with sludge out pipe 14, and one end of sludge out pipe 14 is in aerobic zone 3, and the other end extending apparatus is also connected with controller 15.
Sewage disposal flow process:
Before passing into sewage, first in inlet pipe 9, pass into pressurized air, pressurized air enters aeration tube 10 through inlet pipe 9, then enters aerobic zone 3 from aeration tube 10.Sewage flows into anaerobic zone 1 by water inlet pipe 16, by the first limbers 5, flow into oxygen-starved area 2 again, then by the second limbers 6, flow into aerobic zone 3, under compressed-air actuated castering action, part water body is back to oxygen-starved area 2 by edge on the barrel of oxygen-starved area 2, realized nitrated-denitrifying alternate functions, another part water body flows into settling region 4 by the 3rd limbers 7, and the 4 slowly risings along settling region, under the effect of gravity, mud in water body starts to sink, and slip into aerobic zone 3 by the barrel tilting, under the effect of aerating apparatus, the mud slipping into spills into again recycling in aerobic zone 3, supernatant liquor in settling region 4 collects through overflow weir 17, finally by rising pipe, discharged.
A part of mud in aerobic zone 3, under the effect of submersible sewage pump 12, enters anaerobic zone 1 recycling through sludge pipe 13, and another part mud is under the effect of controller 15, through sludge out pipe 14 dischargers.
The anaerobic zone 1 of this nitrogen and phosphorus removal bio reaction unit and the bottom of oxygen-starved area 2 are provided with agitator (not shown) under liquid, control the dissolved oxygen amount of anaerobic zone 1 and oxygen-starved area 2, thereby realize biological carbon and phosphorous removal process.
In addition, the different qualities of disposing of sewage according to need, can accept or reject the reaction zone of this nitrogen and phosphorus removal bio reaction unit, thereby changes biochemical progression, as: process low-concentration organic wastewater, can cancel anaerobic zone 1, process trade effluent, can cancel oxygen-starved area 2.
Claims (8)
1. a nitrogen and phosphorus removal bio reaction unit, comprise the water inlet pipe, anaerobic zone, oxygen-starved area, aerobic zone, settling region and the rising pipe that along water body flow direction, sequentially arrange, described anaerobic zone, oxygen-starved area, aerobic zone and settling region are separated by each trivial wall, it is characterized in that: described water inlet pipe is stretched in described anaerobic zone by the wall bottom, district of described anaerobic zone, the wall top, district of described anaerobic zone is provided with the first limbers, and described the first limbers is communicated with described anaerobic zone and described oxygen-starved area; On district's wall of described oxygen-starved area, edge is higher than described the first limbers, and the wall bottom, district of described oxygen-starved area is provided with the second limbers; On district's wall of described aerobic zone, edge is higher than edge on district's wall of described oxygen-starved area, the wall bottom, district of described aerobic zone is provided with the 3rd limbers and four-way water hole, described the 3rd limbers is higher than described the second limbers, described four-way water hole is lower than described the second limbers, described aerobic zone is provided with blast aerator, and described blast aerator is arranged on higher than described four-way water hole and lower than the position of described the second limbers; The wall bottom, district of described settling region is to aerobic zone lopsidedness, and is connected with the lower rim in described four-way water hole, and the top of described settling region is connected with described rising pipe; The bottom of described aerobic zone is provided with submersible sewage pump, and the outlet of described submersible sewage pump is connected with one end of sludge pipe, and the other end of described sludge pipe stretches in anaerobic zone; The bottom of described anaerobic zone and described oxygen-starved area is provided with agitator under liquid.
2. nitrogen and phosphorus removal bio reaction unit according to claim 1, is characterized in that: described anaerobic zone, oxygen-starved area, aerobic zone and settling region form sleeve-like configuration.
3. nitrogen and phosphorus removal bio reaction unit according to claim 2, is characterized in that: the quantity in described the first limbers, the second limbers, the 3rd limbers and four-way water hole is all more than 1, uniform along each trivial wall girth.
4. nitrogen and phosphorus removal bio reaction unit according to claim 1, is characterized in that: the bottom of described aerobic zone is provided with sludge out pipe, and one end of described sludge out pipe is in described aerobic zone, and the other end stretches out biological reaction apparatus and is connected with controller.
5. nitrogen and phosphorus removal bio reaction unit according to claim 1, is characterized in that: the top of described settling region is provided with overflow weir.
6. nitrogen and phosphorus removal bio reaction unit according to claim 1, is characterized in that: the lower region wall of described settling region and the angle of horizontal plane are 60 °.
7. the method that the nitrogen and phosphorus removal bio reaction unit described in employing claim 1 to 6 any one is disposed of sewage, comprises the following steps:
A, sewage are 1 ~ 2 hour in the residence time of anaerobic zone;
B, sewage are 1 ~ 2 hour in the residence time of oxygen-starved area;
C, sewage are 5 ~ 6 hours in the residence time of aerobic zone;
D, sewage are 2 ~ 3 hours in the residence time of settling region;
The gas-water ratio of e, aerobic zone is 5:1 ~ 10:1;
The nitrification liquid reflux ratio of f, aerobic zone is 50% ~ 100%, and the return sludge ratio of settling region is 100% ~ 200%.
8. method of disposing of sewage according to claim 7, is characterized in that: described method also comprises in aerobic zone and settling region and add polymerize aluminum chloride, and the add-on of described polymerize aluminum chloride is 20 ~ 50mg/L sewage load.
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| CN201210278596.2A CN102826653B (en) | 2012-08-07 | 2012-08-07 | Denitrification/dephosphorization bioreactor and sewage treatment method with same |
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| CN201210278596.2A CN102826653B (en) | 2012-08-07 | 2012-08-07 | Denitrification/dephosphorization bioreactor and sewage treatment method with same |
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| CN102826653B true CN102826653B (en) | 2014-02-19 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104150720B (en) * | 2014-08-28 | 2016-08-24 | 深圳合续环境科技有限公司 | Air lift type integrated sewage treatment device |
| CN106810003A (en) * | 2015-11-27 | 2017-06-09 | 江苏启创环境科技有限公司 | Integrated sewage treating apparatus |
| CN105347489B (en) * | 2015-12-03 | 2018-02-09 | 华仪环保有限公司 | A kind of efficiently integrated integrated sewage treating apparatus |
| CN105645683B (en) * | 2016-01-12 | 2018-03-16 | 浙江大学 | The life in the countryside that structured packing is strengthened and restaurant wastewater treatment device and its method |
| CN106745736B (en) * | 2016-12-15 | 2020-04-28 | 华北水利水电大学 | C-CBR integrated biological reaction sewage treatment device |
| CN107364969A (en) * | 2017-08-16 | 2017-11-21 | 贵州博凡环境科技有限公司 | The energy-saving sewage processing method and its device of a kind of high-efficient denitrification and dephosphorization |
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| CN2923688Y (en) * | 2006-06-17 | 2007-07-18 | 中山市环保实业发展有限公司 | Integrated self-return-flow multi-stage biological-chemical sewage treatment device |
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| US7927484B2 (en) * | 2008-09-11 | 2011-04-19 | University Of Central Florida Research Foundation, Inc. | Passive underground drainfield for septic tank nutrient removal using functionalized green filtration media |
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Patent Citations (6)
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|---|---|---|---|---|
| CN2923688Y (en) * | 2006-06-17 | 2007-07-18 | 中山市环保实业发展有限公司 | Integrated self-return-flow multi-stage biological-chemical sewage treatment device |
| CN201224698Y (en) * | 2008-04-21 | 2009-04-22 | 吉林省中天环境工程有限公司 | Sludge refluxing apparatus |
| CN101792236A (en) * | 2010-03-29 | 2010-08-04 | 重庆大学 | Sewage treatment method |
| CN201756490U (en) * | 2010-07-30 | 2011-03-09 | 同济大学 | Continuous-flow sewage low-oxygen short-range denitrification treatment device |
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