CN102826653A - 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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- CN102826653A CN102826653A CN2012102785962A CN201210278596A CN102826653A CN 102826653 A CN102826653 A CN 102826653A CN 2012102785962 A CN2012102785962 A CN 2012102785962A CN 201210278596 A CN201210278596 A CN 201210278596A CN 102826653 A CN102826653 A CN 102826653A
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- zone
- limbers
- aerobic zone
- oxygen
- nitrogen
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- 239000010865 sewage Substances 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000010802 sludge Substances 0.000 claims abstract description 20
- 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 37
- 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 20
- 238000005273 aeration Methods 0.000 claims description 10
- 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
- 230000000694 effects Effects 0.000 abstract description 8
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract 1
- 230000008569 process Effects 0.000 description 6
- 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
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 210000002249 digestive system Anatomy 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 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
- 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 WWT, be specifically related to a kind of nitrogen and phosphorus removal bio reaction unit and with its method of disposing of sewage.
Background technology
Biological denitrification process generally is divided into aerobic nitrification stage and anaerobic/anoxic denitrification stage, in the nitrated stage, and the NH in the sewage
4-N is NO by microbial transformation
2 -And NO
3 -In the denitrification stage, the NO in the sewage
2 -And NO
3 -By microbial transformation is N
2The biological phosphate-eliminating process generally is 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 to be provided with a plurality of reaction zones along the water body flow direction in device, artificially make up aerobic, anoxic and anaerobic environment.This kind biological reaction apparatus has the advantage of enhancing unit function, denitrogenation dephosphorizing effect stability.But, often adopt dual mode in order to improve the effect of denitrogenation dephosphorizing: a kind of be in device, repeat to be provided with a plurality of aerobic-the anaerobic/anoxic reaction zone, this kind mode has increased the complicacy of device; Another kind is to adopt refluxing unit to make Digestive system and mud reflux cycle, and this kind mode has increased investment of devices cost and backflow energy consumption.
Summary of the invention
An object of the present invention is to overcome the deficiency of above-mentioned prior art, provide that a kind of cost is low, energy consumption is little, simple in structure and nitrogen and phosphorus removal bio reaction unit that treatment effect is good.
For realizing above-mentioned purpose; 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 are provided with in proper order along the water body flow direction; Said anaerobic zone, oxygen-starved area, aerobic zone and settling region are separated by each trivial wall; It is characterized in that: said water inlet pipe is stretched in the said anaerobic zone by the wall bottom, district of said anaerobic zone, and the wall top, district of said anaerobic zone is provided with first limbers, and said first limbers is communicated with said anaerobic zone and said oxygen-starved area; The wall upper edge, district of said oxygen-starved area is higher than said first limbers, and the wall bottom, district of said oxygen-starved area is provided with second limbers; The wall upper edge, district of said aerobic zone is higher than the wall upper edge, district of said oxygen-starved area; The wall bottom, district of said aerobic zone is provided with the 3rd limbers and four-way water hole; Said the 3rd limbers is higher than said second limbers; Said four-way water hole is lower than said second limbers, and said aerobic zone is provided with the blast aeration device, and said blast aeration device is arranged on the position that is higher than said four-way water hole and is lower than said second limbers; The wall bottom, district of said settling region is to the aerobic zone lopsidedness, and links to each other with the lower rim in said four-way water hole, and the top of said settling region links to each other with said rising pipe.
Preferably, sleeve-like configuration is formed in said anaerobic zone, oxygen-starved area, aerobic zone and settling region.
More electedly, the quantity in said first limbers, second limbers, the 3rd limbers and four-way water hole is uniformly distributed with along each trivial wall girth all more than 1.
Preferably, the bottom of said aerobic zone is provided with submersible sewage pump, and the outlet of said submersible sewage pump links to each other with an end of sludge pipe, and the other end of said sludge pipe stretches in the anaerobic zone.
Preferably, the bottom of said aerobic zone is provided with sludge out pipe, and an end of said sludge out pipe is in said aerobic zone, and the other end stretches out biological reaction apparatus and links to each other with unit.
Preferably, the top of said settling region is provided with overflow weir.
Preferably, the bottom of said anaerobic zone and said oxygen-starved area is provided with whisking appliance under the liquid.
Preferably, the angle of the lower region wall of said settling region and horizontal plane is 60 °.
Another object of the present invention provides a kind of method that adopts above-mentioned nitrogen and phosphorus removal bio reaction unit to dispose of sewage, and may further comprise the 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 GWR 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 handled to meet the demands, then preferably in aerobic zone and settling region, add Poly aluminum Chloride (PAC), the add-on of said Poly aluminum Chloride (PAC) 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 blasts at the blast aeration device under the castering action of gas after the oxygen-starved area flows into aerobic zone, and a part of water body is back to the oxygen-starved area by the wall upper edge, district of oxygen-starved area; Realized nitrated-denitrifying alternate functions; COD in the former water is effectively separated with nitrogen, and this reflux course need not use refluxing unit, has not only saved investment cost; And saved the upkeep cost and the electricity charge, reduced running cost;
2, automatic sludge returning: the inclined design of settling region lower region wall can make the mud that flows into the settling region compile automatically and slip into aerobic zone, has saved the mud collecting device, has scraped mud equipment and refluxing unit, has reduced running cost;
3, owing to saved some equipment, make the process of denitrogenation dephosphorizing under the relatively low state of energy consumption, accomplish, meet the policy of the national energy-saving and emission-reduction of being advocated;
4, with respect to the design side by side of each reaction zone, sleeve-like configuration provided by the invention is added the limbers that the wall girth is uniformly distributed with along the district and is made that water body mobile speed between each reaction zone is faster, it is more abundant to mix, thereby has improved the efficient of denitrogenation dephosphorizing.
Description of drawings
Fig. 1 is the vertical view of the embodiment of the invention;
Fig. 2 is the A-A sectional view of Fig. 1.
Each component names among the figure:
1. anaerobic zone, 2. oxygen-starved area, 3. aerobic zone, 4. settling region, 5. first limbers; 6. second limbers, 7. the 3rd limbers, 8. four-way water hole, 9. inlet pipe, 10. aeration tube; 11. base, 12. submersible sewage pumps, 13. sludge pipes, 14. sludge out pipe; 15. unit, 16. water inlet pipes, 17. overflow weirs, 18. rising pipes.
Embodiment
Below in conjunction with accompanying drawing the present invention is done further detailed description, following examples are that the present invention is not limited to following examples to explanation of the present invention.
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 a circular sleeve shape structure, the center drum of device is an 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 first limbers 5 along girth; The barrel upper edge of oxygen-starved area 2 is higher than first limbers 5 and is lower than the barrel upper edge of aerobic zone 3; The barrel bottom of oxygen-starved area 2 evenly has 19 second limbers 6 along girth; The barrel bottom of aerobic zone 3 evenly has 32 the 3rd limbers 7 in the position that is higher than second limbers 6 along girth, and the barrel bottom of aerobic zone 3 evenly has 32 four-way water holes 8 in the position that is lower than second limbers 6 along girth, and the barrel bottom of settling region 4 is to aerobic zone 3 lopsidedness; The angle of inclination is 60 °, and links to each other with the lower rim in four-way water hole 8.
In the aerobic zone 3, be provided with aerating apparatus in the position that is higher than four-way water hole 8 and is lower than second limbers 6, this aerating apparatus comprises inlet pipe 9 and is distributed in the aeration tube 10 in the aerobic zone that aeration tube 10 is supported by the base that is arranged on aerobic zone 3 bottoms 11.Be provided with submersible sewage pump 12 in the bottom of aerobic zone 3, the outlet of submersible sewage pump 12 links to each other with an end of sludge pipe 13, and the other end of sludge pipe 13 stretches in the anaerobic zone 1.The bottom of aerobic zone 3 also is provided with sludge out pipe 14, and an end of sludge out pipe 14 is in aerobic zone 3, and the other end extending apparatus also links to each other with unit 15.
The WWT flow process:
Before feeding sewage, in inlet pipe 9, feed pressurized air earlier, pressurized air gets into aeration tube 10 through inlet pipe 9, gets into the aerobic zone 3 from aeration tube 10 again.Sewage flows into anaerobic zone 1 by water inlet pipe 16, again by 5 inflow oxygen-starved areas 2, first limbers, flows into aerobic zone 3 by second limbers 6 then; Under compressed-air actuated castering action, a part of water body is back to oxygen-starved area 2 by the barrel upper edge of oxygen-starved area 2, has realized nitrated-denitrifying alternate functions; Another part water body is by 7 inflow settling regions 4, the 3rd limbers, and the 4 slowly risings along the settling region, under the effect of gravity; Mud in the water body begins to sink, and slips into aerobic zone 3 by the barrel that tilts, under the effect of aerating apparatus; The mud that slips into spills into recycling in the aerobic zone 3 again, and the supernatant in the settling region 4 compiles through overflow weir 17, is discharged by rising pipe at last.
A part of mud in the aerobic zone 3 gets into anaerobic zone 1 recycling through sludge pipe 13 under the effect of submersible sewage pump 12, another part mud is under the effect of unit 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 whisking appliance under the liquid (figure does not show), the dissolved oxygen amount of control anaerobic zone 1 and oxygen-starved area 2, thus realize the biological carbon and phosphorous removal process.
In addition, according to the different qualities that need are disposed of sewage, can accept or reject, thereby change biochemical progression the reaction zone of this nitrogen and phosphorus removal bio reaction unit, as: handle low-concentration organic wastewater, can cancel anaerobic zone 1, handle trade effluent, can cancel oxygen-starved area 2.
Claims (10)
1. 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 are provided with in proper order along the water body flow direction; Said anaerobic zone, oxygen-starved area, aerobic zone and settling region are separated by each trivial wall; It is characterized in that: said water inlet pipe is stretched in the said anaerobic zone by the wall bottom, district of said anaerobic zone, and the wall top, district of said anaerobic zone is provided with first limbers, and said first limbers is communicated with said anaerobic zone and said oxygen-starved area; The wall upper edge, district of said oxygen-starved area is higher than said first limbers, and the wall bottom, district of said oxygen-starved area is provided with second limbers; The wall upper edge, district of said aerobic zone is higher than the wall upper edge, district of said oxygen-starved area; The wall bottom, district of said aerobic zone is provided with the 3rd limbers and four-way water hole; Said the 3rd limbers is higher than said second limbers; Said four-way water hole is lower than said second limbers, and said aerobic zone is provided with the blast aeration device, and said blast aeration device is arranged on the position that is higher than said four-way water hole and is lower than said second limbers; The wall bottom, district of said settling region is to the aerobic zone lopsidedness, and links to each other with the lower rim in said four-way water hole, and the top of said settling region links to each other with said rising pipe.
2. nitrogen and phosphorus removal bio reaction unit according to claim 1 is characterized in that: sleeve-like configuration is formed in said anaerobic zone, oxygen-starved area, aerobic zone and settling region.
3. nitrogen and phosphorus removal bio reaction unit according to claim 2 is characterized in that: the quantity in said first limbers, second limbers, the 3rd limbers and four-way water hole is uniformly distributed with along each trivial wall girth all more than 1.
4. nitrogen and phosphorus removal bio reaction unit according to claim 1 is characterized in that: the bottom of said aerobic zone is provided with submersible sewage pump, and the outlet of said submersible sewage pump links to each other with an end of sludge pipe, and the other end of said sludge pipe stretches in the anaerobic zone.
5. nitrogen and phosphorus removal bio reaction unit according to claim 1 is characterized in that: the bottom of said aerobic zone is provided with sludge out pipe, and an end of said sludge out pipe is in said aerobic zone, and the other end stretches out biological reaction apparatus and links to each other with unit.
6. nitrogen and phosphorus removal bio reaction unit according to claim 1 is characterized in that: the top of said settling region is provided with overflow weir.
7. nitrogen and phosphorus removal bio reaction unit according to claim 1 is characterized in that: the bottom of said anaerobic zone and said oxygen-starved area is provided with whisking appliance under the liquid.
8. nitrogen and phosphorus removal bio reaction unit according to claim 1 is characterized in that: the lower region wall of said settling region and the angle of horizontal plane are 60 °.
9. adopt any method that described nitrogen and phosphorus removal bio reaction unit is disposed of sewage of claim 1 to 8, may further comprise the 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 GWR 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%.
10. method of disposing of sewage according to claim 9 is characterized in that: said method comprises also in aerobic zone and settling region and adds Poly aluminum Chloride (PAC) that the add-on of said Poly aluminum Chloride (PAC) 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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| CN102826653A true CN102826653A (en) | 2012-12-19 |
| CN102826653B CN102826653B (en) | 2014-02-19 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104150720A (en) * | 2014-08-28 | 2014-11-19 | 深圳合续环境科技有限公司 | Air lift type integrated sewage treatment device |
| CN105347489A (en) * | 2015-12-03 | 2016-02-24 | 华仪环保有限公司 | Efficient integrated sewage treatment equipment |
| CN105645683A (en) * | 2016-01-12 | 2016-06-08 | 浙江大学 | Structural-filler-reinforced rural domestic and catering wastewater treatment plant and method |
| CN106745736A (en) * | 2016-12-15 | 2017-05-31 | 华北水利水电大学 | C CBR integral biologicals react sewage-treatment plant |
| CN106810003A (en) * | 2015-11-27 | 2017-06-09 | 江苏启创环境科技有限公司 | Integrated sewage treating apparatus |
| 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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