CN107879487B - Biological denitrification integrated device - Google Patents
Biological denitrification integrated device Download PDFInfo
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- CN107879487B CN107879487B CN201711430106.5A CN201711430106A CN107879487B CN 107879487 B CN107879487 B CN 107879487B CN 201711430106 A CN201711430106 A CN 201711430106A CN 107879487 B CN107879487 B CN 107879487B
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 10
- 229910052757 nitrogen Inorganic materials 0.000 claims description 10
- 238000005192 partition Methods 0.000 abstract description 4
- 238000005457 optimization Methods 0.000 abstract description 2
- 239000010802 sludge Substances 0.000 description 19
- 238000000034 method Methods 0.000 description 14
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 241000894006 Bacteria Species 0.000 description 5
- 241001453382 Nitrosomonadales Species 0.000 description 5
- 239000010865 sewage Substances 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 3
- 238000005273 aeration Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 230000010354 integration Effects 0.000 description 3
- 125000001477 organic nitrogen group Chemical group 0.000 description 3
- 238000010992 reflux Methods 0.000 description 3
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 2
- 230000001651 autotrophic effect Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005469 granulation Methods 0.000 description 2
- 230000003179 granulation Effects 0.000 description 2
- 239000010842 industrial wastewater Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 150000004767 nitrides Chemical class 0.000 description 2
- 230000009935 nitrosation Effects 0.000 description 2
- 238000007034 nitrosation reaction Methods 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 1
- 229910000013 Ammonium bicarbonate Inorganic materials 0.000 description 1
- JVMRPSJZNHXORP-UHFFFAOYSA-N ON=O.ON=O.ON=O.N Chemical compound ON=O.ON=O.ON=O.N JVMRPSJZNHXORP-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- CKUAXEQHGKSLHN-UHFFFAOYSA-N [C].[N] Chemical compound [C].[N] CKUAXEQHGKSLHN-UHFFFAOYSA-N 0.000 description 1
- 241001148470 aerobic bacillus Species 0.000 description 1
- 235000012538 ammonium bicarbonate Nutrition 0.000 description 1
- 239000001099 ammonium carbonate Substances 0.000 description 1
- 230000003851 biochemical process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000011081 inoculation Methods 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 241001148471 unidentified anaerobic bacterium Species 0.000 description 1
- 238000009280 upflow anaerobic sludge blanket technology Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/301—Aerobic and anaerobic treatment in the same reactor
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/02—Temperature
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/16—Total nitrogen (tkN-N)
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/22—O2
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/44—Time
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Apparatus Associated With Microorganisms And Enzymes (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
The invention discloses a biological denitrification integrated device. The integrated device comprises a conical bottom, an outer cylinder, an inner cavity (upper), an inner cavity (lower) and a top cover; the inner cavity (from top to bottom) is formed by a hollow cylinder with holes on the side wall, a hollow platform and a conical table top in sequence, the upper end of the hollow cylinder is sealed, the lower end of the hollow cylinder is embedded in the hollow platform, flange joint screw holes are arranged on the periphery of the hollow platform, and the inner diameters of the upper end and the lower end of the conical table top are respectively 1.5-2 times and 2-4 times that of the hollow cylinder; the inner cavity (downwards) is sequentially formed by an inner cavity flange, an upper cylindrical surface with a hole in the side wall, a hollow inverted cone table top and a lower cylindrical surface from bottom to bottom, wherein the inner cavity flange is the same as the hollow platform in size, the inner diameter of the upper cylindrical surface is the same as that of the hollow cylinder, the diameter of the upper end of the inverted cone table top is the same as that of the upper cylindrical surface, the diameter of the lower end of the inverted cone table top is the same as that of the lower cylindrical surface, and the inner diameter of the lower cylindrical surface is 3-6 times that of the upper cylindrical surface. The invention has the characteristics of compact structure, flow state optimization, upper and lower partition and layered internal circulation.
Description
Technical Field
The invention relates to a biological denitrification integrated device, and belongs to the field of sewage and wastewater treatment.
Background
The high-concentration organic nitrogen wastewater mainly comes from industries such as pesticides, medicines, leather making, dyes, rubber, petroleum and the like, and the discharge amount tends to increase year by year. Most of the organic nitrogen industrial wastewater has the characteristics of difficult degradation, toxicity, low carbon nitrogen ratio, complex components, high chromaticity and the like. Because the sewage contains a large amount of organic nitrides and refractory organic matters with complex structures, the broken bonds of the sewage need larger energy for damage; and the organic nitride is decomposed to generate ammonia nitrogen products, so that the ammonia nitrogen concentration is increased, and the subsequent treatment difficulty is formed. Although traditional physicochemical and biochemical processes have been developed for treating high concentration organic nitrogen industrial wastewater, but also has the problems of incomplete degradation, low treatment effect, high treatment cost, high energy consumption and the like. Generally, the ammonia nitrogen concentration of the domestic sewage is about 30-50 mg/L, and the emission limit values of indexes such as ammonia nitrogen, total nitrogen and the like are increasingly strict. How to treat domestic sewage economically and efficiently to enable the ammonia nitrogen and total nitrogen indexes to reach the emission requirements is also one of the main challenges faced by the current denitrification technology.
The traditional denitrification process utilizes Ammonia Oxidizing Bacteria (AOB) and Nitrite Oxidizing Bacteria (NOB) to oxidize ammonia nitrogen into nitrite nitrogen and nitrate nitrogen in turn; in the denitrification stage, denitrifying bacteria take organic matters as electron donors to reduce nitrate nitrogen into nitrogen for removal. However, the traditional nitrification/denitrification biological denitrification process has long flow, large aeration amount, needs additional carbon source and high sludge yield, has contradiction with the dephosphorization process that the sludge residence time and the carbon source supply are difficult to reconcile, and the nitrogen and phosphorus removal is difficult to achieve the emission standard at the same time.
Thus, many new denitrification processes have been developed, and among these new biological denitrification processes, the nitrosation-based whole-course autotrophic denitrification process (Completely Autotrophic Nitrogen-removal Over Nitrite, CANON) is considered as the most simple denitrification process at present. In the novel denitrification process, AOB and Anammox bacteria coexist in the same reactor, and partial NH4+ -N is oxidized into NO 2-N by taking oxygen as an electron acceptor because the AOB is aerobic bacteria; anamox bacteria belongs to anaerobic bacteria, and uses NO 2-N generated by nitrite as an electron acceptor to react with NH4 < + > -N which does not participate in nitrosation to generate N2 for release. Compared with the traditional denitrification process, 63% of oxygen and nearly 100% of additional carbon source can be saved, and the method is a very energy-saving and economical denitrification process and has a wide application prospect.
But the novel denitrification process mainly adopts a UASB reactor or an SBR reactor at present, the partition in the reactor is not obvious, the concentration of granular sludge is difficult to maintain, the granulating effect of the sludge is poor, the content of dissolved oxygen in water is difficult to control, the simultaneous and efficient action of AOB and Anamox bacteria is unfavorable, the energy consumption is large, the process is difficult to control, and the denitrification effect is poor. Aiming at the problems, the invention develops a biological denitrification integrated device, a sludge reflux system of which can maintain higher sludge concentration in the device, the sludge granulation degree is high, the integration degree is high, the running operation is simple and convenient, and the biological denitrification integrated device has the advantages of simple and compact structure, small occupied area, environment friendliness, economy, high efficiency, good denitrification effect and the like.
Disclosure of Invention
The invention aims to solve the problems that: aiming at the problems of long process flow, large aeration amount, need of additional carbon source, higher sludge yield, difficult maintenance of granular sludge concentration, difficult process control and the like in the prior art, the invention provides a biological denitrification integrated device.
In order to solve the technical problems, the invention provides the following solutions: the biological denitrification integrated device comprises a conical bottom, an outer cylinder, an inner cavity (upper), an inner cavity (lower) and a top cover; the external structure of the biological denitrification integrated device sequentially comprises a top cover, an inner cylinder, an outer cylinder and a conical bottom from top to bottom; the outer diameter of the inner cylinder is smaller than the inner diameter of the outer cylinder; the inner part of the inner cylinder is layered up and down; the inner cavity (upper) and the inner cavity (lower) are of central symmetry structures and are respectively positioned at the upper layer and the lower layer of the inner cylinder; the inner cavity (from top to bottom) is formed by a hollow cylinder with a hole on the side wall, a hollow platform and a conical table top in sequence; the upper end of the hollow cylinder is sealed, and the lower end of the hollow cylinder is embedded in the hollow platform; flange interface screw holes are arranged on the periphery of the hollow platform; the inner diameters of the upper end and the lower end of the conical table top are respectively 1.5-2 times and 2-4 times of that of the hollow cylinder; the inner cavity (from bottom to bottom) is formed by an inner cavity flange, an upper cylindrical surface with a hole on the side wall, a hollow inverted cone table top and a lower cylindrical surface in sequence; the inner cavity flange and the hollow platform are the same in size; the inner diameter of the upper cylindrical surface is the same as that of the hollow cylinder; the diameter of the upper end of the inverted cone table top is the same as that of the upper cylindrical surface, the diameter of the lower end is the same as that of the lower cylindrical surface; the inner diameter of the lower cylindrical surface is 3-6 times of that of the upper cylindrical surface; the outer side surface of the lower cylindrical surface is uniformly provided with fixing brackets; the outer end of the fixed support is embedded in the support.
The conical bottom consists of a lower end outlet, a cone and a flange.
The outer cylinder consists of an upper flange, a cylindrical surface and a lower flange; and a water outlet pipe is arranged at the position close to the upper side of the outer side of the cylindrical surface.
The inner cylinder consists of an upper flange, a cylindrical surface and a chassis; 8 stand pipes are uniformly distributed around the outer side of the cylindrical surface; the vertical pipes penetrate through and extend into the cylindrical surface at different height positions; two water outlet risers are symmetrically arranged at the lower part of the cylindrical surface; the water outlet vertical pipe extends to the inner position of the lower cylindrical surface of the inner cavity (lower), and extends to the middle part of the inner cavity (lower) at right angles; two or more layers of supports are uniformly arranged around the inner wall of the cylindrical surface.
The inner cavity (upper) is fixed above the inner cavity (lower) through a connecting rod; and two ends of the connecting rod respectively penetrate through the hollow platform and the inner cavity flange.
The top cover consists of a flange cover plate, a motor, a transmission shaft and more than two paddles; the motor is arranged above the top cover; the transmission shaft sequentially passes through the centers of the flange cover plate, the inner cavity (upper) and the inner cavity (lower) from top to bottom and extends to the bottom of the inner cylinder; the paddle is fixed on the transmission shaft and can be respectively positioned at the bottom of the inner cylinder, the inside of the lower cylindrical surface, the upper part of the inner cavity (lower) and the upper part of the inner cavity (upper).
Compared with the prior art, the invention has the advantages that: aiming at the problems, the invention develops a biological denitrification integrated device, a sludge reflux system of which can maintain higher sludge concentration in the device, the sludge granulation degree is high, the integration degree is high, the running operation is simple and convenient, and the biological denitrification integrated device has the advantages of simple and compact structure, small occupied area, environment friendliness, economy, high efficiency, good denitrification effect and the like.
The biological denitrification integrated device adopts two-point aeration, respectively aerates the inner cavity (upper) and the inner cavity (lower), controls different dissolved oxygen concentrations, has a sludge reflux system, can maintain high-concentration granular sludge, improves denitrification effect, and has simple and compact structure, small occupied area, low cost and convenient maintenance. In conclusion, the invention has the characteristics of compact structure, flow state optimization, upper and lower partition and layered internal circulation, has the characteristics of high integration of reaction regions and obvious partition, and has the advantages of high sludge concentration, high denitrification efficiency, easy control, low energy consumption, small occupied area, environmental friendliness and the like.
Drawings
FIG. 1 is a schematic diagram of a biological denitrification integrated apparatus.
Fig. 2 is a schematic view of the structure of the tapered bottom.
Fig. 3 is a schematic structural view of the outer tub.
FIG. 4 is a schematic structural view of the inner barrel.
Fig. 5 is a schematic view of the structure of the lumen (up).
Fig. 6 is a schematic view of the structure of the lumen (down).
Fig. 7 is a schematic structural view of the top cover.
FIG. 8 is a schematic diagram of a biological nitrogen removal integrated apparatus.
Description of the drawings
[1] Conical bottom
[1-1] lower outlet [1-2] cone [1-3] flange
[2] Outer cylinder
[2-1] upper flange [2-2] lower flange of water outlet pipe [2-3]
[2-4] cylindrical surface
[3] Inner cylinder
[3-1] upper flange [3-2] cylindrical surface [3-3] chassis
[3-4] riser [3-5] Outlet riser [3-6] support
[4] Inner cavity (Upper)
[4-1] hollow cylinder [4-2] hollow platform [4-3] conical table top
[5] Inner cavity (lower)
[5-1] inner cavity flange [5-2] upper cylindrical surface [5-3] inverted cone table top
[5-4] lower cylindrical surface [5-5] fixing support
[6] Top cover
[6-1] cover plate [6-2] motor [6-3] transmission shaft
[6-4] blade
Detailed Description
As shown in FIG. 1, a small-scale biological denitrification integrated device is manufactured, and the biological denitrification integrated device comprises a conical bottom, an outer cylinder, an inner cavity (upper), an inner cavity (lower) and a top cover, wherein the outer structure of the biological denitrification integrated device sequentially comprises the top cover, the inner cylinder, the outer cylinder and the conical bottom from top to bottom. Inner cylinder outer diameter 160 mm, height 334 mm, outer cylinder inner diameter 220 mm, height 320 mm; the inner part of the inner cylinder is layered up and down. As shown in fig. 2, the conical bottom is composed of a lower outlet (diameter 6mmm, length 20 mm), a cone (diameter 220 mm, height 50 mm) and a flange (diameter 310 mm).
As shown in fig. 3, the outer cylinder is composed of an upper flange (diameter 310 mm), a cylindrical surface (diameter 220 mm, height 320 mm) and a lower flange (diameter 310 mm); a water outlet pipe is arranged at the outer side of the cylindrical surface from the upper flange 60 and mm. As shown in fig. 4, the inner barrel is composed of an upper flange (diameter 310 mm), a cylindrical surface (diameter 160 mm, height 334 mm) and a chassis (diameter 160 mm); 8 vertical pipes (diameter 10 mm) are uniformly distributed on the periphery of the outer side of the cylindrical surface; the vertical pipe passes through and stretches into the cylindrical surface at different height positions; two water outlet risers are symmetrically arranged at the lower part of the cylindrical surface (away from the chassis 16 mm); the water outlet vertical pipe extends to the inner position of the lower cylindrical surface of the inner cavity (lower), and extends to the middle part of the inner cavity (lower) at right angles; two layers of supports (away from the bottom plate 106 mm, 130 mm) are uniformly arranged around the inner wall of the cylindrical surface.
As shown in fig. 5 and 6, the inner cavity (upper) and the inner cavity (lower) are in central symmetry structures and are respectively positioned at the upper layer and the lower layer of the inner cylinder; the inner cavity (from top to bottom) is composed of a hollow cylinder (diameter 48 mm, height 30 mm) with holes on the side wall, a hollow platform (diameter 80 mm) and a conical table top (upper diameter 80 mm, lower diameter 100 mm, height 24 mm) in sequence; the upper end of the hollow cylinder is sealed, and the lower end of the hollow cylinder is embedded in the hollow platform; flange interface screw holes are arranged around the hollow platform; the inner cavity (bottom) is sequentially formed by an inner cavity flange (diameter 80 mm), an upper cylindrical surface (diameter 48 mm, height 30 mm) with a hole on the side wall, a hollow inverted conical table top (upper diameter 80 mm, lower diameter 128 mm, height 30 mm) and a lower cylindrical surface (diameter 128 mm, height 80 mm) from top to bottom; the outer side surface of the lower cylindrical surface is uniformly provided with a fixed bracket (length 15 mm); the outer end of the fixed bracket is embedded in the support (length 10 mm). The inner cavity (upper) is fixed above the inner cavity (lower) through a connecting rod; and two ends of the connecting rod respectively penetrate through the hollow platform and the inner cavity flange.
As shown in fig. 7, the top cover is composed of a flange cover plate (diameter 310 and mm), a motor, a transmission shaft and two paddles; the motor is arranged above the top cover; the transmission shaft sequentially passes through the centers of the flange cover plate, the inner cavity (upper) and the inner cavity (lower) from top to bottom and extends to the bottom of the inner cylinder; the paddle is fixed on the transmission shaft and can be respectively positioned at the bottom of the inner cylinder and the inside of the lower cylindrical surface.
The device is made of organic glass, simulated wastewater is prepared by using ammonium bicarbonate, the concentration of ammonia nitrogen and total nitrogen in the water is controlled to be 100 mg/L, the hydraulic retention time is controlled to be 6 hours, the dissolved oxygen in the inner cavity (upper) is controlled to be about 0.2 mg/L, and the dissolved oxygen in the inner cavity (lower) is controlled to be about 0.05 mg/L. The mixed sludge prepared from the activated sludge, the digested sludge and the Anamox sludge according to the ratio of 1:2:3 is used for inoculation, the operating temperature is maintained to be 35 ℃, and the total nitrogen removal rate of effluent after continuous operation for 2 months is more than 78%.
Claims (4)
1. The biological denitrification integrated device is characterized by comprising a conical bottom (1), an outer cylinder (2), an inner cylinder (3), an upper inner cavity (4), a lower inner cavity (5) and a top cover (6); the external structure of the biological denitrification integrated device sequentially comprises a top cover (6), an inner cylinder (3), an outer cylinder (2) and a conical bottom (1) from top to bottom; the conical bottom (1) consists of a lower end outlet (1-1), a cone (1-2) and a flange (1-3); the outer cylinder (2) consists of an upper flange (2-1), a cylindrical surface (2-4) and a lower flange (2-3); a water outlet pipe (2-2) is arranged at the position, which is close to the outer side of the cylindrical surface (2-4), of the water outlet pipe; the outer diameter of the inner cylinder (3) is smaller than the inner diameter of the outer cylinder (2); the inside of the inner cylinder (3) is layered up and down; the upper cavity (4) and the lower cavity (5) are of central symmetry structures, and the upper cavity (4) and the lower cavity (4) which are respectively positioned on the upper layer and the lower layer of the inner cylinder (3) are sequentially formed by a hollow cylinder (4-1) with a hole on the side wall, a hollow platform (4-2) and a conical table top (4-3) from top to bottom; the upper end of the hollow cylinder (4-1) is sealed, and the lower end of the hollow cylinder is embedded in the hollow platform (4-2); the inner diameters of the upper end and the lower end of the conical table top (4-3) are respectively 1.5-2 times and 2-4 times of that of the hollow cylinder (4-1) around the hollow platform (4-2) and provided with flange interface screw holes; the inner cavity lower part (5) is sequentially formed by an inner cavity flange (5-1), an upper cylindrical surface (5-2) with a hole on the side wall, a hollow inverted conical table top (5-3) and a lower cylindrical surface (5-4) from top to bottom; the inner cavity flange (5-1) and the hollow platform (4-2) are the same in size; the inner diameter of the upper cylindrical surface (5-2) is the same as that of the hollow cylinder (4-1); the diameter of the upper end of the inverted conical table top (5-3) is the same as that of the upper cylindrical surface (5-2), and the diameter of the lower end of the inverted conical table top is the same as that of the lower cylindrical surface (5-4); the inner diameter of the lower cylindrical surface (5-4) is 3-6 times of that of the upper cylindrical surface; the outer side surface of the lower cylindrical surface (5-4) is uniformly provided with a fixing bracket (5-5); the outer end of the fixed support (5-5) is embedded in the support (3-6).
2. The biological nitrogen removal integrated apparatus of claim 1, wherein: the inner cylinder (3) is composed of an upper flange (3-1), a cylindrical surface (3-2) and a chassis (3-3); 8 stand pipes (3-4) are uniformly distributed around the outer side of the cylindrical surface (3-2); the vertical pipes (3-4) penetrate through and extend into the cylindrical surface (3-2) at different height positions; two water outlet vertical pipes (3-5) are symmetrically arranged at the lower part of the cylindrical surface (3-2); the water outlet vertical pipe (3-5) extends to a position below the lower cylindrical surface (5-4) of the lower inner cavity (5) and extends to the middle part of the lower inner cavity (5) at right angles; two or more layers of supports (3-6) are uniformly arranged around the inner wall of the cylindrical surface (3-2).
3. The biological nitrogen removal integrated apparatus of claim 1, wherein: the upper part (4) of the inner cavity is fixed above the lower part of the inner cavity through a connecting rod, and two ends of the connecting rod respectively penetrate through the hollow platform (4-2) and the inner cavity flange (5-1).
4. The biological nitrogen removal integrated apparatus of claim 1, wherein: the top cover (6) is composed of a flange cover plate (6-1), a motor (6-2), a transmission shaft (6-3) and more than two paddles (6-4); the motor (6-2) is arranged above the top cover (6); the transmission shaft (6-3) sequentially passes through the centers of the flange cover plate (6-1), the upper inner cavity (4) and the lower inner cavity (5) from top to bottom and extends to the bottom of the inner cylinder (3); the paddle (6-4) is fixed on the transmission shaft (6-3) and is respectively positioned at the bottom of the inner cylinder (3), the inside of the lower cylindrical surface (5-4), the upper part of the lower inner cavity (5) and the upper part of the upper inner cavity (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711430106.5A CN107879487B (en) | 2017-12-26 | 2017-12-26 | Biological denitrification integrated device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711430106.5A CN107879487B (en) | 2017-12-26 | 2017-12-26 | Biological denitrification integrated device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107879487A CN107879487A (en) | 2018-04-06 |
| CN107879487B true CN107879487B (en) | 2024-02-02 |
Family
ID=61772427
Family Applications (1)
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