CN104045156A - Integrated efficient autotrophic nitrogen removal reactor - Google Patents

Integrated efficient autotrophic nitrogen removal reactor Download PDF

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CN104045156A
CN104045156A CN201410278194.1A CN201410278194A CN104045156A CN 104045156 A CN104045156 A CN 104045156A CN 201410278194 A CN201410278194 A CN 201410278194A CN 104045156 A CN104045156 A CN 104045156A
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urceolus
zone
water
pipe
anaerobic
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CN104045156B (en
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吴伟祥
康婷婷
孙法迁
胡健
何洋洋
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Zhejiang University ZJU
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Zhejiang University ZJU
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Abstract

The invention discloses an integrated efficient autotrophic nitrogen removal reactor. The reactor comprises an inner barrel and an outer barrel which are coaxially arranged, wherein a three-phase separator and a horn barrel which is tightly connected with an expanding part of the diameter at the upper part of the wall of the outer barrel are coaxially mounted at the upper part of the inner barrel in a sleeving manner; a space formed by the inner barrel and the outer barrel is divided into an anaerobic zone and a precipitating zone by utilizing the horn barrel; the inner barrel is taken as an aerobic zone; an annular overflow weir used for isolating the precipitating zone and the anaerobic zone is arranged on the top surface of the inner barrel; short-range nitrification sludge is inoculated in the aerobic reaction zone; a spiral micropore aeration pipe is arranged in the aerobic reaction zone; anaerobic ammonia oxidation sludge is inoculated in the anaerobic reaction zone; granule-state bamboo charcoal fillers are added into the anaerobic reaction zone to serve as a sludge carrier. According to the reactor, the individual culturing of different functional microorganisms in the single reactor is realized, so that the key operation requirements of partial nitrification and anaerobic ammonia oxidation processes can be satisfied; the efficient and stable running of the reactor is ensured. Thus, the reactor disclosed by the invention is suitable for treating wastewater with a high ammonia-nitrogen ratio and a low carbon-nitrogen ratio.

Description

Integrated high-efficiency self-supported denitrification reactor
Technical field
The invention belongs to bio-denitrifying sewage processing technology field, be specifically related to a kind of integrated high-efficiency self-supported denitrification reactor.
Technical background
The environmental hazard that China's water body nitrate pollution causes is increasingly serious, and ammonia nitrogen is principal pollutant wherein, and its quantity discharged, far beyond the environmental capacity of receiving water body, became the main contamination index of China's seven large water systems in recent years.Biological denitrification process is the main method that removes Water element, traditional biological denitrification process is many based on nitrated-denitrification principle, technical process is long, energy consumption is high, and denitrification process needs a large amount of carbon sources, processing some high-concentration waste waters, as shown significant limitation in the waste water of percolate, the contour ammonia nitrogen of livestock breeding wastewater, low ratio of carbon to ammonium.Therefore, seek the new bio denitrogenation method of economical and efficient, be especially applicable to the biological treatment of low ratio of carbon to ammonium waste water, become the significant task of environmental pollution control field.
Short distance nitration-anaerobic ammonia oxidation process is a kind of novel autotrophic denitrification biological treatment, and the more traditional nitration denitrification biological denitrification process of this technique is compared, and can save 62.5% oxygen demand, has greatly reduced power and energy consumption.And nitrite bacteria and anaerobic ammonium oxidizing bacteria are autotrophic type microorganism, do not need to add organic carbon source.Yet nitrite bacteria and anaerobic ammonia oxidizing bacteria physiological property are different, how fully meet the psychological need of two kinds of microorganisms, realize being connected of nitrosification and anaerobic ammonium oxidation process, the efficient stable of assurance technique becomes the key that this technique is applied.
Short distance nitration-Anammox combined denitrification technique of application mainly contains two types at present: a kind of for single-stage technique, in same reactor, realize the mixed culture of two kinds of microorganisms; Another kind is two-stage process, realizes the single culture of two kinds of microorganisms in two reactors, by series connection, realizes combined denitrification.But easily there is the Accumulation Phenomenon of nitrite and to microorganisms restraining effect, simultaneously initial cost and the floor space of whole technique are also larger in the short distance nitration stage in two-stage process; In single-stage technique because the anaerobic ammonium oxidizing bacteria long-term exposure of obligate anaerobic is in certain density aerobic environment, can reduce to a certain extent the activity of anaerobic ammonia oxidizing bacteria, and by dissolved oxygen, control the stability that is difficult to maintain short distance nitration process separately, finally cause being difficult to realize higher nitrogen in autotrophy single-stage reactor and remove load.
 
Summary of the invention
The object of the invention is to propose a kind of two kinds of microorganisms single culture in same reactor that realizes, guarantee that its microorganism has efficient stable, technique is simple, the integrated high-efficiency self-supported denitrification reactor of convenient operating maintenance.
For achieving the above object.The technical solution used in the present invention is:
Integrated high-efficiency self-supported denitrification reactor comprises that coaxial line is fixed on inner core and the urceolus on support, the upper diameter of urceolus expands, the top of inner core coaxial line be nested with install triphase separator and with the close-connected speaking trumpet of wall of the outer-rotor upper diameter expansion place, speaking trumpet is two portions by inner core and the formed separated by spaces of urceolus, wherein, the inner side of speaking trumpet is between interior, space between urceolus is anaerobic zone, the outside of speaking trumpet is annular taper settling region, inner core is as aerobic zone, on the top of settling region, be provided with vertical flow deflector, triphase separator is positioned at anaerobic zone, on the wall of the outer-rotor of settling region, there is mud discharging mouth, inner core end face is provided with recessed formula draw-in groove, in recessed formula draw-in groove, snap in for by the annular overflow weir of settling region and anaerobic zone isolation, between urceolus top cover and annular overflow weir, leave spacing, on annular overflow weir, there is exhaust hose, on urceolus top cover, there is total air escape pipe, in aerobic zone, there is spiral micropore aeration pipe, the lower end of spiral micropore aeration pipe is connected with inlet pipe, inlet pipe is extended urceolus and is connected with air pump, the bottom of inner core is provided with water inlet pipe, this water inlet pipe is connected with inlet chest through intake pump, the bottom of inner core is positioned at the upper horizontal of water inlet pipe aerobic water distribution board is installed, above aerobic water distribution board, be provided with the aerobic mud discharging mouth that extends urceolus, a plurality of aerobic thief holes that extend urceolus are evenly set on inner tube wall vertically, a plurality of anaerobism thief holes are evenly set on wall of the outer-rotor vertically, the bottom of urceolus is provided with anaerobism mud discharging mouth, speaking trumpet is provided with rising pipe and the return line that extends urceolus, rising pipe is connected with water tank, the enlarged-diameter place of urceolus be positioned at return line above be settled out water pipe, the mouth of pipe that is settled out water pipe has screen cloth, the bottom of urceolus is inverted cone shape, the vertex of a cone connects anaerobism water inlet pipe, anaerobism water inlet pipe is with return line and be settled out water pipe and be connected, on return line, be connected to reflux pump, bottom level at urceolus is installed anaerobic water plate, cone inwall along urceolus bottom is arranged water distribution board, in anaerobic zone, add bamboo charcoal particle.
Further feature of the present invention is that the upper diameter of urceolus is 3:2 with the ratio of lower diameter.
In the present invention, anaerobic zone is determined according to mating of nitrosification ability and Anammox ability with the volume ratio of aerobic zone, by regulating the backflow water yield in anaerobic zone can make reactor tackle better influent quality, is changed.Conventionally, making the volume ratio of anaerobic zone and aerobic zone is 3:1 ~ 2:1; The poor ratio of the height of anaerobic zone and inside and outside cylinder diameter is 10:1; The aspect ratio of aerobic zone is 6:1.
Further feature of the present invention is that described annular taper settling region and the volume ratio of aerobic zone are 1:5.
For ease of controlling recirculation water, enter the flow velocity of anaerobism water inlet pipe, prevent from precipitating the impact that water outlet flow velocity is subject to recirculation water flow velocity, further feature of the present invention is, the internal diameter of described anaerobism water inlet pipe is 2:1 with the internal diameter ratio that is settled out water pipe, the internal diameter of anaerobism water inlet pipe than for 2:1, is settled out the top 5cm that water pipe is positioned at return line with the internal diameter of return line.
In technique scheme, the diameter of described bamboo charcoal particle is 1-2mm, and density is 750 kg/m 3, addition is 10g .l -1.The interpolation of bamboo charcoal carrier can make microorganism species be attached to bamboo charcoal particle surface and form stable granule sludge, and reinforcement sludge settling property improves the resistance to matrix of mud and changes the ability changing with water impact.The interpolation of bamboo charcoal carrier can improve the content of dissolved organic matter, by promoting the heterotrophism nitrate reduction of anaerobic ammonia oxidizing bacteria to produce ammonia process, can significantly reduce the generation of nitric nitrogen anaerobic reaction district in, realizes the removal completely of nitrogen and improves total nitrogen and remove and load.
In technique scheme, the cone gradient of described triphase separator is 55 ~ 60 °, refluxes and seams as 0.5cm, to obtain good sludge retention ability and to be beneficial to the downslide of holding back mud.The cone gradient of speaking trumpet is identical with the cone gradient of triphase separator.
Compare with existing bio-denitrification technology, the present invention has obvious advantage:
1) reactor integrates nitrosification process and anaerobic ammonium oxidation process, can realize integral type autotrophic denitrification, and top, anaerobic zone altogether wall type arranges settling region, and each unit is connected closely, and floor space is little, simple to operate; 2) settling region, as the intermediate zone that connects aerobic zone and anaerobic zone, by maintaining the shorter hydraulic detention time of short distance nitration process to the regular spoil disposal in bottom, settling region, keeps its efficient stable;
3) beyond anaerobism water inlet pipe, the form of expander, as the mixing tube of settling tank water outlet and anaerobism recirculation water, can, by regulating the whole anaerobism influent quality of recirculation water water velocity modulation, be alleviated pH and the disadvantageous effect of substrate inhibition effect to anaerobic ammonia oxidizing bacteria;
4) the Anammox mud granule of interpolation bamboo charcoal is better, and it is strong that resistance to water impact and matrix change the ability of impacting, and it is little that nitric nitrogen produces ratio, and nitrogen removal is loaded high.
5) the present invention's subregion in single reaction vessel, realizes respectively half short distance nitration and anaerobic ammonium oxidation process, has guaranteed that two microbial growth environment are independent of each other.Reactor monolith passes through to meet the psychological need of two kinds of different microorganisms, alleviates matrix from suppressing and product retarding effect, has guaranteed higher nitrogen removal load, is applicable to the processing of high ammonia nitrogen, low ratio of carbon to ammonium waste water.
Accompanying drawing explanation
Fig. 1 is integrated high-efficiency self-supported denitrification reactor structural representation;
Fig. 2 is the structure enlarged view that Fig. 1 irises out part A;
In figure: 1. support, 2. inner core, 3. urceolus, 4. triphase separator, 5. speaking trumpet, 6. vertical flow deflector, 7. mud discharging mouth, 8. recessed formula draw-in groove, 9. annular overflow weir, 10. exhaust hose, 11. total air escape pipes, 12. water inlet pipes, 13. intake pumps, 14. inlet chests, 15. spiral micropore aeration pipes, 16. inlet pipe, 17. air pumps, 18. aerobic thief holes, 19. aerobic mud discharging mouths, 20. anaerobism thief holes, 21. anaerobism mud discharging mouths, 22. rising pipes, 23. return lines, 24. water tanks, 25. are settled out water pipe, 26. screen clothes, 27. anaerobism water inlet pipes, 28. reflux pumps, 29. aerobic water distribution boards, 30. anaerobic water plates, 31. water distribution boards, 32. bamboo charcoal particles.
 
Embodiment
With reference to Fig. 1, Fig. 2, integrated high-efficiency self-supported denitrification reactor of the present invention comprises that coaxial line is fixed on inner core 2 and the urceolus 3 on support 1, the upper diameter of urceolus 3 expands, the top of inner core 2 coaxial line be nested with install triphase separator 4 and with the close-connected speaking trumpet 5 of wall of the outer-rotor upper diameter expansion place, speaking trumpet 5 is two portions by inner core 2 and the formed separated by spaces of urceolus 3, wherein, the inner side of speaking trumpet is between interior, space between urceolus is anaerobic zone, the outside of speaking trumpet is annular taper settling region, inner core 2 is as aerobic zone, on the top of settling region, be provided with vertical flow deflector 6, triphase separator 4 is positioned at anaerobic zone, on the wall of the outer-rotor of settling region, there is mud discharging mouth 7, inner core end face is provided with recessed formula draw-in groove 8, in recessed formula draw-in groove 8, snap in for by the annular overflow weir 9 of settling region and anaerobic zone isolation, between urceolus top cover and annular overflow weir 9, leave spacing, on annular overflow weir 9, there is exhaust hose 10, on urceolus top cover, there is total air escape pipe 11, in aerobic zone, there is spiral micropore aeration pipe 15, the lower end of spiral micropore aeration pipe 15 is connected with inlet pipe 16, inlet pipe 16 is extended urceolus 3 and is connected with air pump 17, the bottom of inner core 2 is provided with water inlet pipe 12, this water inlet pipe 12 is connected with inlet chest 14 through intake pump 13, the bottom of inner core is positioned at the upper horizontal of water inlet pipe 12 aerobic water distribution board 29 is installed, above aerobic water distribution board 29, be provided with the aerobic mud discharging mouth 19 that extends urceolus, a plurality of aerobic thief holes 18 that extend urceolus are evenly set on inner core 2 walls vertically, a plurality of anaerobism thief holes 20 are evenly set on urceolus 3 walls vertically, the bottom of urceolus is provided with anaerobism mud discharging mouth 21, speaking trumpet 5 is provided with rising pipe 22 and the return line 23 that extends urceolus, rising pipe 22 is connected with water tank 24, the enlarged-diameter place of urceolus be positioned at return line 23 above be settled out water pipe 25, the mouth of pipe that is settled out water pipe 25 has screen cloth 26, be used for holding back partial suspended mud, prevent that water outlet from stopping up.The bottom of urceolus 3 is inverted cone shape, the vertex of a cone connects anaerobism water inlet pipe 27, anaerobism water inlet pipe 27 is with return line 23 and be settled out water pipe 25 and be connected, on return line 23, be connected to reflux pump 28, bottom level at urceolus 3 is installed anaerobic water plate 30, cone inwall along urceolus 3 bottoms is arranged water distribution board 31, adds bamboo charcoal particle 32 in anaerobic zone.
Integrated high-efficiency self-supported denitrification reactor can be made of PVC plate or steel plate, during use, first utilize intake pump 13, by water inlet pipe 12, high ammonia-nitrogen wastewater is pumped into integrated reacting apparatus from inlet chest 14, water inlet enters aerobic reactor zone after aerobic water distribution board 29, air pump 17 pumps into spiral micropore aeration pipe 15 by air by inlet pipe 16, micropore aeration pipe provides dissolved oxygen for aerobic zone microorganism, and makes fully to be mixed with aerobic zone short distance nitration mud into water.Dissolved oxygen and ammonia nitrogen in nitrite bacteria picked-up liquid phase main body, be oxidized to nitrite by part ammonia nitrogen, and product be transported to liquid phase main body.Control aerobic zone dissolved oxygen and be controlled at 0.5mg/L left and right, sludge retention time is 1.5 ~ 2d.Mud mixture enters settling region through the annular overflow weir 9 at top, aerobic zone by vertical flow deflector 6 water conservancy diversion, and mud mixture carries out mud-water separation in settling region.Mud after precipitation retains and regularly discharges in settling region cone, and the supernatant liquor after precipitation enters in the anaerobism water inlet pipe 27 of anaerobic zone through being settled out water pipe 25 gravity flows.Anaerobic zone phegma pumps in anaerobism water inlet pipe side by return line 23, by regulating the adjustable anaerobic reaction of the reflux pump 28 district recirculation water water yield.Settling region water outlet is fully mixed in anaerobism water inlet pipe with anaerobism phegma, after water distribution board 31 and anaerobic water plate 30 water distributions, enters anaerobic reaction district.Under the flow velocity of intaking faster, anaerobic zone muddy water is fully mixed, and presents the Sludge Bed state that flows that suspends in middle and lower part, anaerobic reaction district, and top, Er anaerobic reaction district is because the sedimentation of granule sludge reduces the mud in mixed solution in a large number.Anaerobic zone muddy water mixed solution is after triphase separator 4, and gas, water continue upwards to flow and granule sludge is trapped sedimentation.Anaerobic effluent flows in water tank 24 through rising pipe 22, and gas is discharged through reactor head total air escape pipe 11 jointly through exhaust hose 10 and the aerobic zone gas at top.

Claims (7)

1. integrated high-efficiency self-supported denitrification reactor, it is characterized in that comprising that coaxial line is fixed on inner core (2) and the urceolus (3) on support (1), the upper diameter of urceolus (3) expands, the top coaxial line of inner core (2) be nested with install triphase separator (4) and with the close-connected speaking trumpet of wall of the outer-rotor upper diameter expansion place (5), speaking trumpet (5) is two portions by inner core (2) and the formed separated by spaces of urceolus (3), wherein, the inner side of speaking trumpet is between interior, space between urceolus is anaerobic zone, the outside of speaking trumpet is annular taper settling region, inner core (2) is as aerobic zone, on the top of settling region, be provided with vertical flow deflector (6), triphase separator (4) is positioned at anaerobic zone, on the wall of the outer-rotor of settling region, there is mud discharging mouth (7), inner core end face is provided with recessed formula draw-in groove (8), in recessed formula draw-in groove (8), snap in for by the annular overflow weir (9) of settling region and anaerobic zone isolation, between urceolus top cover and annular overflow weir (9), leave spacing, on annular overflow weir (9), there is exhaust hose (10), on urceolus top cover, there is total air escape pipe (11), in aerobic zone, there is spiral micropore aeration pipe (15), the lower end of spiral micropore aeration pipe (15) is connected with inlet pipe (16), inlet pipe (16) is extended urceolus (3) and is connected with air pump (17), the bottom of inner core (2) is provided with water inlet pipe (12), this water inlet pipe (12) is connected with inlet chest (14) through intake pump (13), the bottom of inner core is positioned at the upper horizontal of water inlet pipe (12) aerobic water distribution board (29) is installed, in the top of aerobic water distribution board (29), be provided with the aerobic mud discharging mouth (19) that extends urceolus, a plurality of aerobic thief holes (18) that extend urceolus are evenly set on inner core (2) wall vertically, on urceolus (3) wall, a plurality of anaerobism thief holes (20) are evenly set vertically, the bottom of urceolus is provided with anaerobism mud discharging mouth (21), speaking trumpet (5) is provided with rising pipe (22) and the return line (23) that extends urceolus, rising pipe (22) is connected with water tank (24), the top that is positioned at return line (23) at the enlarged-diameter place of urceolus is settled out water pipe (25), the mouth of pipe that is settled out water pipe (25) has screen cloth (26), the bottom of urceolus (3) is inverted cone shape, the vertex of a cone connects anaerobism water inlet pipe (27), anaerobism water inlet pipe (27) is with return line (23) and be settled out water pipe (25) and be connected, on return line (23), be connected to reflux pump (28), bottom level at urceolus (3) is installed anaerobic water plate (30), cone inwall along urceolus (3) bottom is arranged water distribution board (31), in anaerobic zone, add bamboo charcoal particle (32).
2. integrated high-efficiency self-supported denitrification reactor according to claim 1, is characterized in that, the upper diameter of described urceolus is 3:2 with the ratio of lower diameter.
3. integrated high-efficiency self-supported denitrification reactor according to claim 1, it is characterized in that, described anaerobic zone and the volume ratio of aerobic zone are 3:1 ~ 2:1, and the poor ratio of the height of described anaerobic zone and inside and outside cylinder diameter is 10:1, and the aspect ratio of described aerobic zone is 6:1.
4. integrated high-efficiency self-supported denitrification reactor according to claim 1, is characterized in that, described annular taper settling region and the volume ratio of aerobic zone are 1:5.
5. integrated high-efficiency self-supported denitrification reactor according to claim 1, it is characterized in that, the internal diameter of described anaerobism water inlet pipe (27) is 2:1 with the internal diameter ratio that is settled out water pipe (25), the internal diameter of the internal diameter of anaerobism water inlet pipe (27) and return line (23), than for 2:1, is settled out the top 5cm that water pipe (25) is positioned at return line (23).
6. integrated high-efficiency self-supported denitrification reactor according to claim 1, is characterized in that, the diameter of described bamboo charcoal particle (32) is 1-2mm, and density is 750 kg/m 3, addition is 10g .l -1.
7. integrated high-efficiency self-supported denitrification reactor according to claim 1, it is characterized in that, the cone gradient of described triphase separator (4) is 55 ~ 60 °, refluxes and seams as 0.5cm, and the cone of speaking trumpet (5) is identical with the cone gradient of triphase separator (4).
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104211177A (en) * 2014-09-19 2014-12-17 浙江大学 Gas oscillation type self-circulation denitrification reactor
CN105060465A (en) * 2015-09-11 2015-11-18 江苏兆盛环保集团有限公司 Synchronous carbon and nitrogen removing reactor
CN105668771A (en) * 2016-03-30 2016-06-15 刘晓涛 Spring-type aerator
CN105738575A (en) * 2016-03-01 2016-07-06 浙江大学 Anaerobic ammonia oxidation granular sludge shrinkage measuring device and method
CN105800787A (en) * 2016-05-30 2016-07-27 农业部沼气科学研究所 Integrated autotrophic synchronous biological denitrification granulation device
CN111170574A (en) * 2020-01-16 2020-05-19 河海大学 Industrial sewage treatment method

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104211177A (en) * 2014-09-19 2014-12-17 浙江大学 Gas oscillation type self-circulation denitrification reactor
CN104211177B (en) * 2014-09-19 2016-01-20 浙江大学 Gas swings formula self-circulation denitrification reactor
CN105060465A (en) * 2015-09-11 2015-11-18 江苏兆盛环保集团有限公司 Synchronous carbon and nitrogen removing reactor
CN105738575A (en) * 2016-03-01 2016-07-06 浙江大学 Anaerobic ammonia oxidation granular sludge shrinkage measuring device and method
CN105668771A (en) * 2016-03-30 2016-06-15 刘晓涛 Spring-type aerator
CN105668771B (en) * 2016-03-30 2019-05-17 刘晓涛 A kind of spring aerator
CN105800787A (en) * 2016-05-30 2016-07-27 农业部沼气科学研究所 Integrated autotrophic synchronous biological denitrification granulation device
CN105800787B (en) * 2016-05-30 2019-05-21 农业部沼气科学研究所 A kind of integral type autotrophic type Simultaneous Denitrification granulation device
CN111170574A (en) * 2020-01-16 2020-05-19 河海大学 Industrial sewage treatment method

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