CN115403146A - Improved type graded water inlet multistage multi-section biological nitrogen and phosphorus removal device and process - Google Patents
Improved type graded water inlet multistage multi-section biological nitrogen and phosphorus removal device and process Download PDFInfo
- Publication number
- CN115403146A CN115403146A CN202211065828.6A CN202211065828A CN115403146A CN 115403146 A CN115403146 A CN 115403146A CN 202211065828 A CN202211065828 A CN 202211065828A CN 115403146 A CN115403146 A CN 115403146A
- Authority
- CN
- China
- Prior art keywords
- denitrification
- tank
- disturbance
- carbon source
- cavity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 122
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 110
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 55
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 54
- 229910052698 phosphorus Inorganic materials 0.000 title claims abstract description 54
- 239000011574 phosphorus Substances 0.000 title claims abstract description 54
- 230000008569 process Effects 0.000 title claims abstract description 49
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 96
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 96
- 238000011282 treatment Methods 0.000 claims abstract description 22
- 230000001502 supplementing effect Effects 0.000 claims abstract description 4
- 239000010865 sewage Substances 0.000 claims description 88
- 238000007789 sealing Methods 0.000 claims description 26
- 238000005192 partition Methods 0.000 claims description 25
- 241000894006 Bacteria Species 0.000 claims description 24
- 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 claims description 23
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 22
- 229910052760 oxygen Inorganic materials 0.000 claims description 22
- 239000001301 oxygen Substances 0.000 claims description 22
- 230000007704 transition Effects 0.000 claims description 12
- 125000001477 organic nitrogen group Chemical group 0.000 claims description 11
- 230000009471 action Effects 0.000 claims description 8
- 238000005273 aeration Methods 0.000 claims description 8
- 238000011221 initial treatment Methods 0.000 claims description 7
- 238000004062 sedimentation Methods 0.000 claims description 7
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims description 6
- 239000004519 grease Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 5
- 244000005700 microbiome Species 0.000 claims description 5
- 230000001546 nitrifying effect Effects 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 230000006872 improvement Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000007790 scraping Methods 0.000 claims description 3
- 239000002893 slag Substances 0.000 claims description 3
- 239000010802 sludge Substances 0.000 abstract description 20
- 238000010992 reflux Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 description 17
- 238000006243 chemical reaction Methods 0.000 description 9
- 241001148470 aerobic bacillus Species 0.000 description 8
- 238000001179 sorption measurement Methods 0.000 description 7
- 238000000354 decomposition reaction Methods 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 6
- 238000007254 oxidation reaction Methods 0.000 description 6
- 241001148471 unidentified anaerobic bacterium Species 0.000 description 5
- 229910002651 NO3 Inorganic materials 0.000 description 4
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- 238000010170 biological method Methods 0.000 description 3
- 235000015097 nutrients Nutrition 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 241000108664 Nitrobacteria Species 0.000 description 2
- 239000000370 acceptor Substances 0.000 description 2
- 230000003028 elevating effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- 238000003911 water pollution Methods 0.000 description 2
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000005276 aerator Methods 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000010840 domestic wastewater Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000002503 metabolic effect Effects 0.000 description 1
- YPJKMVATUPSWOH-UHFFFAOYSA-N nitrooxidanyl Chemical compound [O][N+]([O-])=O YPJKMVATUPSWOH-UHFFFAOYSA-N 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 238000006864 oxidative decomposition reaction Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Images
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
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
-
- 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
- C02F2209/16—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
- C02F2209/18—PO4-P
-
- 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)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention relates to an improved multistage biological nitrogen and phosphorus removal device with staged water inlet, which comprises an aerobic tank, a nitrification tank and a denitrification tank, wherein the aerobic tank, the nitrification tank and the denitrification tank are integrally arranged in a treatment tank, a carbon source adding device is arranged in the denitrification tank and used for supplementing a carbon source to the denitrification tank, a plurality of groups of unit aerobic cavities are divided in the aerobic tank, water inlet pipes are arranged in the unit cavities, a plurality of groups of unit nitrification cavities are arranged in the nitrification tank and communicated with the unit denitrification cavities arranged in the denitrification tank, a part device effectively distributes the carbon source by accurate point water inlet, the carbon source is preferentially utilized for nitrogen removal by the accurate point water inlet, the nitrogen removal rate is high, the characteristic of multistage AO process denitrification is fully utilized, the required internal reflux amount is smaller under the condition of the same nitrogen removal rate, the sludge loads of all the stages are basically the same by the point water inlet, so that the operation management is convenient, and the investment is not increased compared with the traditional nitrogen removal process.
Description
Technical Field
The invention relates to the field of sewage treatment processes, in particular to an improved graded water inlet multistage multi-stage biological nitrogen and phosphorus removal device and a process.
Background
The problem of water pollution has attracted extensive attention of people in all communities at present. The main sources of water body pollution are urban domestic wastewater, industrial wastewater and agricultural pollution sources. The over-high content of nitrogen and phosphorus in the sewage can cause water eutrophication, cause water quality deterioration and even influence human health, so the research and development of an economic and efficient new nitrogen and phosphorus removal process is the key for solving the problem of water pollution. The nitrogen and phosphorus removal method mainly comprises physical, chemical and biological methods, but the physical and chemical method has large investment and is easy to cause secondary pollution, and the biological method has small investment, low cost and no secondary pollution. Therefore, the biological method is the main method for sewage treatment in the future. Biological nitrogen and phosphorus removal principle.
Generally, the biological denitrification process is divided into three steps: the first step is that organic nitrogen is decomposed and converted into ammonia nitrogen under the action of ammoniation bacteria. The second step is that the ammonia nitrogen is further decomposed and oxidized into nitrate nitrogen under the action of nitrobacteria. In the third step, in an anoxic state, the denitrifying bacteria reduce nitrate nitrogen generated in the nitrification process into gaseous nitrogen and discharge the gaseous nitrogen into the atmosphere. Research has shown that some bacteria can directly oxidize ammonia nitrogen into gaseous nitrogen by using nitrite or nitrate as electron acceptor in the nitrification and denitrification processes. The discovery lays a theoretical foundation for the research and development of a novel denitrification process. Biological phosphorus removal refers to a physiological change phenomenon that phosphorus-accumulating bacteria absorb phosphorus under anaerobic conditions and release phosphorus excessively under aerobic conditions, and the phenomenon is called luxuryuptake. The research finds that: one facultative denitrifying bacterium can convert nitrate radical into gaseous nitrogen and produce biological phosphorus eliminating effect. In summary, biological nitrogen and phosphorus removal is to decompose and transform organic nitrogen and organic phosphorus by using the metabolic activity of microorganisms.
The traditional biological nitrogen and phosphorus removal process can be generally divided into 2 categories, namely, the process is distributed according to time sequence, such as SBR process; the second is distributed according to the spatial sequence, such as an A2/0 process. The oxidation ditch process is a process distributed in a time sequence and a process distributed in a space sequence. These processes have been widely studied and applied while achieving good results.
SBR is a short name of a sequencing batch activated sludge process, and is a water treatment technology operated in an intermittent aeration mode. The reaction process of the SBR reactor comprises 5 stages of water inlet, reaction, precipitation, discharge and idling, and the steps are repeated in turn, so that the effects of nitrogen and phosphorus removal are achieved; an A2/O process, namely an anaerobic/anoxic/aerobic process, is a typical sewage treatment process, wastewater firstly enters an anaerobic section to carry out ammoniation reaction and phosphorus release, then enters an anoxic section to carry out denitrification, and finally carries out nitrification reaction and phosphorus absorption in an aerobic section, part of nitrified liquid flows back to the anoxic section, and part of sludge flows back to the anaerobic section; the oxidation ditch process has been widely applied all over the world since the advent, and has become one of the leading processes in sewage treatment in China at present. The oxidation ditch has a unique structural form and is provided with no terminal circulating water path, so that the dissolved oxygen generated by the aerator generates a concentration gradient along the water flow direction and changes repeatedly, and the oxidation ditch has a good removal effect on nitrogen and phosphorus in the mixed liquid while removing organic matters;
the traditional denitrification and dephosphorization process has the problems of microorganism mixed culture, carbon source, sludge age, nitrate in return sludge and the like. The single-stage SBR reactor is completely mixed in space, so that nitrobacteria, denitrifying bacteria and the like are mixed together to inhibit the reaction and solve the problem of insufficient carbon source. The A2/O process, namely the anaerobic/anoxic/aerobic process has an internal reflux system which can bring nitrate back to the anoxic tank to be unfavorable for phosphorus accumulation of phosphorus accumulating bacteria, so that the phosphorus accumulation effect is not obvious. The denitrification effect is difficult to improve by an improved mode. The oxidation ditch process is a deformation of an activated sludge method, sludge expansion is easy to occur, so that the sludge discharge capacity is large, the concentration of dissolved oxygen in the same ditch is difficult to control, the denitrification capability is limited, and the phosphorus removal rate is low. Therefore, in order to obtain better denitrification and dephosphorization effects, the old process needs to be further modified or a new process needs to be developed.
Disclosure of Invention
The invention aims to provide an improved graded water inlet multistage biological nitrogen and phosphorus removal device and a process, which can effectively solve the problem of poor nitrogen and phosphorus removal effects in the traditional process.
The technical scheme adopted by the invention is as follows:
the utility model provides an improvement type is multistage biological nitrogen and phosphorus removal device of intaking in grades, includes good oxygen pond, nitrifies pond and denitrification pond, good oxygen pond, nitrify pond and the integrated setting in treatment pond in denitrification pond, be provided with carbon source interpolation equipment in the denitrification pond, carbon source interpolation equipment is used for supplementing the carbon source to the denitrification pond, it has the good oxygen cavity of multiunit to cut apart in the good oxygen pond, all be provided with the inlet tube in the unit cavity, it nitrifies the cavity to be provided with the multiunit in the pond to nitrify, the unit is nitrified the cavity and is communicate with the denitrification cavity of the unit that the denitrification in the pond set up.
The invention also comprises the following features:
the whole pipe-shaped structure that is of good oxygen pond, be provided with the center in the good oxygen pond and separate the frame, the center separates the frame including setting up at good oxygen pond center well core rod, well core rod body circumference interval distribution multiunit baffle, well core rod's outer wall is fixed to the one end of multiunit baffle, the multiunit baffle is arranged along the length direction of well core rod, a side end face and the inner wall interval arrangement in good oxygen pond of multiunit baffle, well core rod is connected with the regulating unit, and well core rod rotates repeatedly in the regulating unit drive, the good oxygen cavity of unit is constituteed to adjacent baffle and good oxygen pond inner wall.
One end of the aerobic tank is provided with a closed end, the closed end is provided with a plurality of groups of water inlet pipes, and the plurality of groups of water inlet pipes are communicated with a unit aerobic cavity formed by adjacent partition plates and the inner wall of the aerobic tank.
The aerobic pool is characterized in that a water baffle is arranged at one end of the central separation frame, the water baffle extends to one end of the aerobic pool, the water baffle and the water inlet pipe form opening or closing fit, the surface of the water baffle is parallel to the end surface of the aerobic pool, a notch is formed in the water baffle, and the notch is communicated with or separated from the water inlet pipe.
The baffle is kept away from a side end face of well core rod and is provided with the disturbance convex plate, the disturbance convex plate is close to or keeps away from with the inner wall in good oxygen pond, adjusting unit is including setting up the adjusting gear in well core rod one end, adjusting gear and regulation rack meshing, the adjusting gear is connected with adjusting cylinder's piston rod.
The whole body of the aerobic tank is obliquely arranged, an included angle between the aerobic tank and the horizontal plane is adjusted to form, a liquid outlet of the aerobic tank is arranged at the high-end position of the aerobic tank, an aeration pipe is arranged in the aerobic cavity of the unit, and the aeration pipe is fixedly connected with the partition plate.
The aerobic tank is characterized in that one end of the cylinder body of the aerobic tank is hinged to the treatment tank, a wedge block is arranged on the cylinder body of the aerobic tank and is abutted against the adjusting roller, a wheel carrier of the adjusting roller is connected with a piston rod of the adjusting oil cylinder, and the piston rod of the adjusting oil cylinder is horizontally arranged.
And overflow gaps are arranged on the unit nitrification cavities of the nitrification tank and communicated with the water storage cavity, and a lifting pump is arranged in the water storage cavity and communicated with the unit denitrification cavity of the denitrification tank.
Roundabout plates are arranged in the denitrification pool, the roundabout plates are integrally U-shaped, a plurality of groups of roundabout plates are arranged in the denitrification pool, one side plate surface of each adjacent roundabout plate extends into an opening of the other roundabout plate, and unit denitrification cavities are formed among the roundabout plates.
And a backflow chamber is arranged at the front end of the denitrification tank and communicated with the unit denitrification cavity.
The water sealing device is characterized in that a water guide port is formed in the denitrification cavity, a water sealing plate is arranged on the water guide port, the water sealing plate is rotatably arranged on the denitrification cavity, the water sealing plate is integrally cylindrical, an outlet is formed in the vertical barrel core and the barrel wall of the water sealing plate, the outlet and the water guide port are communicated and cut off, a connecting driving rod is arranged at the center of the water sealing plate, a toggle gear is arranged at the upper end of the connecting driving rod, the toggle gear is meshed with a toggle rack, and the toggle rack is horizontal and connected with a piston rod of a toggle electric cylinder.
The utility model discloses a disturbance plate, including disturbance plate, articulated on the face of circuitous board, the articulated shaft of disturbance plate is vertical arranges, the cover is equipped with the torsional spring on the articulated shaft of disturbance plate, the both ends of torsional spring are connected with articulated shaft and disturbance version respectively and are supported and lean on, the articulated shaft axle head is provided with disturbance arm, the end of overhanging of disturbance arm is provided with the disturbance wheel, the disturbance wheel supports with the disturbance voussoir and supports and lean on, the disturbance voussoir discontinuous is fixed on the disturbance drive plate, the disturbance drive plate with stir rack parallel arrangement, the disturbance drive plate is connected with the piston rod of disturbance electricity jar.
The front end and the rear end of a channel formed by the unit denitrification cavities are respectively provided with a flow pushing cover, the flow pushing covers are vertically arranged, a plurality of groups of flow pushing openings are arranged on the flow pushing covers in an array manner, and the flow pushing covers are communicated with a flow guide port of the flow pusher through a pipeline.
The disturbance wedge blocks are arranged on two sides of the disturbance drive plate, a plurality of groups of disturbance plates are arranged at intervals along the length direction of the circuitous plate, disturbance wheels on the hinge shafts of adjacent disturbance drive plates are abutted to the disturbance wedge blocks on two sides of the disturbance drive plates, and the rotation directions of the adjacent disturbance plates are opposite.
Carbon source adds equipment adds the package including setting up the carbon source of upper and lower position in the unit denitrification cavity, the carbon source adds the package and is made by flexible material, the both ends that the package was added to the carbon source are provided with the stay tube respectively, the export intercommunication of stay tube and carbon source jar, the stay tube is connected with the lifting unit, and lifting unit drive stay tube and carbon source add the package and reciprocate and be close to or keep away from with unit denitrification cavity.
Be provided with carbon source strip opening on the carbon source adds the package, strip opening arranges along carbon source adds package length direction, the both ends that the package was added to the carbon source are provided with tightening means, tightening means is used for implementing to carbon source adds the package and elongates and loosen, and implements to tighten up and open carbon source strip opening.
The back of the flow pushing cover is provided with an introducing port, a flow guiding propeller is arranged in the flow pushing cover, the guiding direction of the flow guiding propeller points to the flow pushing opening from the introducing port, and the lifting unit drives the carbon source tank to vertically apply and to be close to or far away from the introducing port.
Tightening means adds the rope that tightens up at package both ends including setting up at the carbon source, be provided with on the pipe shaft of stay tube and tighten up the support, the one end of tightening up the rope is connected with the one end of tightening up the slide bar, tighten up the slide bar level and constitute sliding fit with tightening up the support, the rod end cover of tightening up the slide bar and stretching out the support is equipped with and tightens up the spring, tighten up the both ends of spring and support and the rod end of tightening up the slide bar respectively and lean on, the rod end of tightening up the slide bar is provided with and tightens up the gyro wheel, the wheel core level of tightening up the gyro wheel is arranged, the folded plate that tightens up gyro wheel and side setting up supports and leans on.
The pipe body of the supporting pipe is provided with a transition support, the transition support is provided with a transition wheel, and the tightening rope is rolled on the wheel body of the transition wheel.
The lifting unit comprises a lifting slide bar arranged on the upper cover of the denitrification tank, the lifting slide bar is vertically arranged, a lifting rod is arranged beside the lifting slide bar in parallel, a lifting rack is arranged on the lifting rod and is meshed with a lifting gear, and the lifting gear is connected with an output shaft of a lifting motor.
The improved graded water inlet multistage and multistage biological nitrogen and phosphorus removal process comprises the following steps:
firstly, primarily filtering sewage through a coarse grating and a fine grating;
secondly, removing residual silt and grease in the primarily treated sewage through a slag extractor and a grease scraping device;
thirdly, guiding the primarily filtered sewage into a primary sedimentation tank for primary sedimentation;
fourthly, guiding the primarily precipitated sewage into an aerobic tank for primary treatment, and decomposing and converting organic nitrogen in the sewage into ammonia nitrogen under the action of ammonifying bacteria by using microorganisms in the aerobic tank;
fifthly, the sewage subjected to primary treatment in the aerobic tank overflows to a unit nitrification cavity of the nitrification tank from a guide outlet, and is further decomposed and oxidized into nitrate nitrogen under the action of nitrifying bacteria;
sixthly, guiding the sewage in the water storage cavity into a denitrification tank through a lifting pump for denitrification treatment;
seventhly, starting a flow pusher on the flow pushing cover to enable sewage in the unit denitrification cavity to circularly and repeatedly flow;
eighthly, starting a disturbance electric cylinder to enable the disturbance plate to be positioned in the denitrification cavity for disturbance, so that the sewage is positioned in the denitrification cavity for repeated circular flow, and the denitrifying bacteria are effectively combined with nitrate nitrogen in the sewage;
ninth, starting the lifting unit to enable the carbon source adding bag to extend into the unit denitrification cavity, enabling the carbon source in the carbon source adding bag to be released at the position of the flow pushing cover, uniformly dispersing the carbon source in the unit denitrification cavity through the flow pushing cover, reducing nitrate nitrogen generated in the nitrification process into gaseous nitrogen by using denitrifying bacteria, and discharging the gaseous nitrogen into the atmosphere to finish the treatment of sewage;
and step ten, rotating the water sealing plate, and communicating an outlet arranged on the wall of the water sealing plate cylinder with a water guide port arranged on the denitrification cavity, so as to discharge the treated sewage.
The invention has the technical effects that: the sewage enters respective aerobic tanks through a plurality of water inlet pipes, the sewage treated by the aerobic tanks is guided into the nitrification tanks and is oxidized into nitrate nitrogen through nitrifying bacteria, the nitrified sewage is guided into a unit denitrification cavity in the denitrification tank through a multipoint water inlet mode, a carbon source is effectively distributed through accurate point water inlet, the carbon source is preferentially utilized for denitrification through the accurate point water inlet, the nitrogen removal rate is high, the characteristics of multistage AO process denitrification are fully utilized, the required internal reflux amount is small under the condition of the same nitrogen removal rate, the sludge load of each section is basically the same through point water inlet, the operation management is convenient, and the investment is not increased compared with the traditional nitrogen and phosphorus removal process.
Drawings
FIG. 1 is a top view of an aerobic tank and a nitrification tank;
FIG. 2 is a front view of the aerobic tank and the nitrification tank;
FIGS. 3 and 4 are schematic diagrams of two kinds of structures of a single aerobic tank;
FIG. 5 is a schematic sectional structure of a single aerobic tank;
FIG. 6 is a schematic end view of the aerobic tank;
FIG. 7 is a front view of a single aerobic tank;
FIGS. 8 and 9 are a top view and a front view, respectively, of a denitrification tank;
FIG. 10 is a front view of the push flow shield;
FIG. 11 is a front view of a carbon source adding apparatus;
FIG. 12 is a top view of the structure of the water guiding opening and the water sealing plate;
FIG. 13 is a plan view of the interference plate and the bypass plate mounted.
Detailed Description
In order that the objects and advantages of the invention will be more clearly understood, the invention will now be described in detail with reference to the following examples. It is to be understood that the following text is merely illustrative of one or more specific embodiments of the invention and does not strictly limit the scope of the invention as specifically claimed. As used herein, the terms "parallel" and "perpendicular" are not limited to their strict geometric definitions, but include tolerances for machining or human error, rationale, and inconsistencies;
the following detailed descriptions of the specific features of the improved staged water inlet multistage biological nitrogen and phosphorus removal device are provided with reference to fig. 1 to 13:
the utility model provides a multistage biological nitrogen and phosphorus removal device of intaking in grades of improvement type, includes good oxygen pond 100, nitrifies pond 200 and denitrification pond 300, good oxygen pond 100, nitrify pond 200 and denitrification pond 300 integrated the setting in handling the pond, be provided with carbon source in the denitrification pond 300 and add equipment, the carbon source adds equipment and is used for supplementing the carbon source to denitrification pond 300, it has the good oxygen cavity 110 of multiunit to cut apart in the good oxygen pond 100, all be provided with the inlet tube in the unit cavity, it nitrifies cavity 210 to be provided with the multiunit in the pond 200, the unit denitrification cavity 310 intercommunication that sets up in unit nitrification cavity 210 and the denitrification pond 300.
The sewage enters the respective aerobic tanks 100 through a plurality of water inlet pipes, the sewage treated by the aerobic tanks 100 is guided into the nitrification tank 200, the sewage is oxidized into nitrate nitrogen through nitrifying bacteria, the nitrified sewage is guided out to the unit denitrification cavity 310 in the denitrification tank 300 in a multi-point water inlet mode, carbon sources are effectively distributed through accurate point water inlet, the carbon sources are preferentially utilized for denitrification through the accurate point water inlet, the nitrogen removal rate is high, the characteristics of multi-stage AO process denitrification are fully utilized, the required internal reflux amount is small under the condition of the same nitrogen removal rate, the sludge load of each section is basically the same through the point water inlet, the operation and management are convenient, and the investment is not increased compared with the traditional denitrification and dephosphorization process.
For further improving the decomposition of organic nitrogen in the primary filtered sewage, the effect of good aerobic bacteria and sludge is fully utilized, the whole aerobic tank 100 is of a circular tube-shaped structure, a central partition frame 120 is arranged in the aerobic tank 100, the central partition frame 120 comprises a central rod 121 arranged at the center of the aerobic tank 100, a plurality of groups of partition plates 122 are circumferentially distributed on the rod body of the central rod 121 at intervals, one ends of the groups of partition plates 122 are fixed on the outer wall of the central rod 121, the groups of partition plates 122 are arranged along the length direction of the central rod 121, one end surfaces of the groups of partition plates 122 are arranged at intervals with the inner wall of the aerobic tank 100, the central rod 121 is connected with an adjusting unit, the adjusting unit drives the central rod 121 to repeatedly rotate, and adjacent partition plates 122 and the inner wall of the aerobic tank 100 form a unit aerobic cavity 110.
The primarily treated sewage is guided into the cylindrical aerobic tank 100 in a point-by-point manner by the lift pump and is respectively guided into a unit aerobic cavity 110 formed by the adjacent partition plates 122 and the inner wall of the aerobic tank 100, so that the sewage is fully combined with aerobic bacteria in the unit aerobic wall 110 for adsorption to decompose organic nitrogen, and the sewage is stirred to the sludge and the aerobic bacteria in the cylindrical aerobic tank 100 along with the repeated rotation of the central rod 121 driven by the adjusting unit, so that the adsorption and decomposition of the organic nitrogen are further improved, and the treatment effect of the sewage at the position is improved.
In the process of introducing the sewage subjected to the preliminary filtration into the aerobic tank 100, one end of the aerobic tank 100 is provided with a closed end, the closed end is provided with a plurality of groups of water inlet pipes 130, and the plurality of groups of water inlet pipes 130 are communicated with a unit aerobic cavity 110 formed by adjacent partition plates 122 and the inner wall of the aerobic tank 100.
The sewage enters the unit aerobic cavity 110 formed by the adjacent partition plates 122 and the inner wall of the aerobic tank 100 in a point-by-point manner through a plurality of groups of water inlet pipes 130, so that the combination with the sewage and aerobic bacteria in the unit aerobic cavity 110 can be effectively improved, and the organic nitrogen adsorption efficiency of the aerobic bacteria is improved.
Furthermore, when sewage in the aerobic cavity 110 of the inlet unit is treated, one end of the central partition frame 120 is provided with a water baffle 140, the water baffle 140 extends to one end of the aerobic tank 100, the water baffle 140 and the water inlet pipe 130 form an opening or closing fit, the plate surface of the water baffle 140 is parallel to the end surface of the aerobic tank 100, the water baffle 140 is provided with a notch 141, and the notch 141 is communicated with or blocked from the water inlet pipe 130.
In the rotating process of the center rod 121, the water baffle 140 is rotated, and the notch 141 and the water inlet pipe 130 are in a conducting or blocking state, so that sewage is sequentially guided in, the combination efficiency of the sewage and sludge and aerobic bacteria in the aerobic cavity 110 is improved, and the primary treatment effect on the sewage is improved.
When the central rod 121 is shifted, a disturbance convex plate 1221 is arranged on the end face, far away from the central rod 121, of one side of the partition plate 122, the disturbance convex plate 1221 is close to or far away from the inner wall of the aerobic tank 100, the adjusting unit comprises an adjusting gear 123 arranged at one end of the central rod 121, the adjusting gear 123 is meshed with an adjusting rack 124, and the adjusting rack 124 is connected with a piston rod of an adjusting cylinder 125.
More preferably, in order to further improve the adsorption and conversion of the aerobic bacteria on the organic nitrogen in the sewage, the whole aerobic tank 100 is obliquely arranged and adjusted to form an included angle for adjusting the aerobic tank 100 and a horizontal plane, a liquid outlet of the aerobic tank 100 is arranged at the high end of the aerobic tank 100, an aeration pipe 150 is arranged in the unit aerobic cavity 110, and the aeration pipe 150 is fixedly connected with the partition plate 122.
In the actual treatment, the oxygen supply amount can be increased by introducing the aeration pipes 150 into the aerobic cavities 110 of the units of the aerobic tank 100, so as to improve the adsorption and conversion of organic nitrogen by the aerobic bacteria.
Preferably, when the aerobic tank 100 is stirred, one end of the cylinder of the aerobic tank 100 is hinged in the treatment tank, the cylinder of the aerobic tank 100 is provided with a wedge 160, the wedge 160 abuts against an adjusting roller 161, the wheel frame of the adjusting roller 161 is connected with the piston rod of an adjusting oil cylinder 162, and the piston rod of the adjusting oil cylinder 162 is horizontally arranged.
The aerobic tanks 100 are arranged in the whole treatment tank at intervals in parallel, the preliminarily precipitated sewage is lifted to the respective water inlet pipes 130 through the lift pumps, and after the preliminary adsorption and decomposition of the aerobic tanks 100, the height of the overflow outlet at the high end of the aerobic tank 100 is adjusted through the adjusting oil cylinder 162, so that the sewage in the aerobic tank 100 is preliminarily discharged to the next nitrification tank 200, and the excessive sludge in the aerobic tank 100 is prevented from being led out to the nitrification tank 200.
The sludge at the bottom of the nitrification tank 200 and the sludge at the lower end of the oxidation tank 100 can be guided to each other by the spiral guiding machine, so that the sewage treatment effect can be further improved.
Furthermore, in order to guide the sewage treated in the nitrification tank out of the denitrification cavity 310 to further decompose and convert nitrate nitrogen in the nitrified sewage, overflow ports 220 are respectively arranged on the unit nitrification cavities 210 of the nitrification tank 200, the overflow ports 220 are communicated with the water storage cavity 230, and a lift pump is arranged in the water storage cavity 230 and is communicated with the unit denitrification cavity 310 of the denitrification tank 300.
In actual design, the denitrification tank 300 is provided with a plurality of detour plates 320, the detour plates 320 are entirely U-shaped, the detour plates 320 are positioned in the denitrification tank 300, one side plate surface of each adjacent detour plate 320 extends into an opening of the other detour plate 320, and a unit denitrification cavity 310 is formed between the detour plates 320.
The structure of the nitrification tank 200 is set in an annular runway circulation type, water in the tank circularly flows, an anaerobic (anoxic) section is not independently arranged, an external reflux is arranged at the front section part of the runway, the process forms an anoxic environment through the external reflux to further remove nitrate nitrogen, an anaerobic environment is formed to fully release phosphorus after full denitrification, and the denitrification and dephosphorization effects are further enhanced under the anaerobic (anoxic) alternate operation environment; by means of anaerobic (anoxic) alternate operation, denitrifying phosphorus accumulating strains are enriched and strengthened to realize denitrifying nitrogen removal and phosphorus removal; denitrifying phosphorus accumulating bacteria are adopted to realize denitrification (carbon source substances stored in the body are used as electron donors, NO3 & lt- & gt is used as electron acceptors), compared with denitrifying bacteria for denitrification, the method saves carbon sources in organic matter utilization and reduces energy consumption as much as possible for subsequent denitrifying denitrification; the anaerobic (anoxic) alternate circulation operation is adopted to continuously carry out the processes of phosphorus release and phosphorus accumulation, and the phosphorus removal effect is further enhanced.
Further, a backflow chamber 330 is arranged at the front end of the denitrification tank 300, and the backflow chamber 330 is communicated with the unit denitrification cavity 310.
The backflow chamber 330 is arranged at the front section of the runway, the process forms an anoxic environment through external backflow to further remove nitrate nitrogen, an anaerobic environment is formed after sufficient denitrification to fully release phosphorus, and the nitrogen and phosphorus removal effect is further enhanced under an anaerobic (anoxic) alternate operation environment.
More preferably, when the nitrate nitrogen of the sewage in the denitrification cavity 310 is subjected to non-oxidative decomposition and conversion, the denitrification cavity 310 is provided with a water guide opening 311, the water guide opening 311 is provided with a water sealing plate 340, the water sealing plate 340 is rotatably arranged on the denitrification cavity 310, the water sealing plate 340 is integrally cylindrical, the barrel core of the water sealing plate 340 is vertical, the barrel wall of the water sealing plate is provided with an outlet 341, the outlet 341 and the water guide opening 311 are in a communication state and a cutoff state, the center of the water sealing plate 340 is provided with a connecting driving rod 342, the upper end of the connecting driving rod 342 is provided with a toggle gear 343, the toggle gear 343 is engaged with a toggle rack 344, and the toggle rack 344 is horizontal and is connected with the piston rod of a toggle electric cylinder 345.
The electric cylinder 345 is driven to rotate the connecting driving rod 342 and the water sealing plate 340, so as to plug the water guide opening 311, and after the nitrate nitrogen of the sewage in the denitrification cavity 310 is treated, the water guide opening 311 is opened, the treated sewage overflows, and the nitrogen is discharged.
In order to further improve the adsorption and conversion efficiency of the anaerobic bacteria, the sludge and the nitrified nitrogen in the sewage, the disturbance plate 321 is hinged to the plate surface of the circuitous plate 320, a hinged shaft of the disturbance plate 321 is vertically arranged, a torsional spring is sleeved on the hinged shaft of the disturbance plate 321, two ends of the torsional spring are respectively connected with the hinged shaft and the disturbance plate 321 to be abutted against, a disturbance arm 327 is arranged at the shaft end of the hinged shaft, a disturbance wheel 323 is arranged at the overhanging end of the disturbance arm 327, the disturbance wheel 323 is abutted against the disturbance wedge block 324, the disturbance wedge block 324 is discontinuously fixed on a disturbance drive plate 325, the disturbance drive plate 325 is arranged in parallel with a disturbance rack 344, and the disturbance drive plate 325 is connected with a piston rod of a disturbance electric cylinder 326.
When the disturbance plate 321 is driven, the disturbance electric cylinder 326 is started, so that the disturbance wedge block 324 is abutted against the disturbance wheel 323 to swing, the torsion spring is further twisted, the disturbance plate 321 is swung, the disturbance to the sewage in the denitrification cavity 310 is realized, the sewage is disturbed in a reciprocating manner along the denitrification cavity 310, and the nitrogen and phosphorus removal effect is further enhanced under the anaerobic (anoxic) alternative operation environment; by means of alternate anaerobic and anoxic operation, denitrifying phosphorus accumulating bacteria are enriched and strengthened to realize denitrifying nitrogen and phosphorus removal.
In order to further improve the alternative reflux of the sewage in the denitrification cavity 310, the front end and the rear end of a channel formed by the unit denitrification cavity 310 are respectively provided with a flow pushing cover 350, the flow pushing covers 350 are vertically arranged, a plurality of groups of flow pushing openings 351 are arranged on the flow pushing covers 350 in an array mode, and the flow pushing covers 350 are communicated with the flow guide openings of the flow pushers 352 through pipelines.
When the sewage in the denitrification cavity 310 is pushed to alternately flow back, the flow driver 352 is started, so that the sewage in the denitrification cavity 310 is disturbed under the driving force of the flow driver 352, anaerobic bacteria and nitrate nitrogen in the sewage are effectively adsorbed and converted, and the sewage treatment efficiency is improved.
When the disturbing plates 321 are arranged, the disturbing wedges 324 are arranged at two sides of the disturbing plate 325, a plurality of groups of disturbing plates 321 are arranged at intervals along the length direction of the detour plate 320, the disturbing wheels 323 on the hinge shafts of the adjacent disturbing plates 325 abut against the disturbing wedges 324 at two sides of the disturbing plate 325, and the rotating directions of the adjacent disturbing plates 321 are opposite.
When the disturbance plates 321 are driven, the disturbance electric cylinder 326 is started, so that the adjacent disturbance plates 321 are in a state of opposite rotation directions, further, the sewage in the single denitrification cavity 310 can be repeatedly disturbed, and the sewage is fully combined with the sludge and anaerobic bacteria suspended in the sewage, so that the free nitrate nitrogen and the like in the sewage are fully converted, and the treatment effect and the efficiency of the sewage are improved.
More preferably, for providing the abundant nutrient of free anaerobe in mud and the sewage, improve the decomposition efficiency to nitrate nitrogen in the sewage, carbon source adds equipment is including setting up carbon source that the position was from top to bottom in unit denitrification cavity 310 and adding package 510, carbon source adds package 510 and is made by flexible material, the both ends that carbon source adds package 510 are provided with the stay tube 520 respectively, stay tube 520 and the export intercommunication of carbon source jar 530, stay tube 520 is connected with the elevating unit, and elevating unit drive stay tube 520 and carbon source add package 510 reciprocate and be close to or keep away from with unit denitrification cavity 310.
Through the lifting unit, the support pipe 520 and the carbon source adding bag 510 are lowered into the pool water of the nitrification cavity 310, and the carbon source led out through the carbon source tank 530 is released from the carbon source adding bag 510, so that sufficient nutrients for free anaerobic bacteria in sludge and sewage can be provided, and the decomposition efficiency of nitrate nitrogen in the sewage is improved.
Further, a carbon source strip-shaped opening 511 is arranged on the carbon source adding bag 510, the strip-shaped opening 511 is arranged along the length direction of the carbon source adding bag 510, tightening devices are arranged at two ends of the carbon source adding bag 510, the tightening devices are used for stretching and loosening the carbon source adding bag 510, and tightening and opening the carbon source strip-shaped opening 511.
In the implementation, the carbon source adding bag 510 is closed by being far away from the unit denitrification cavity 310, and the carbon source adding bag 510 is opened and released by descending the unit denitrification cavity 310, the carbon source adding bag 510 is provided with a carbon source strip-shaped opening 511, and the carbon source strip-shaped opening 511 arranged on the carbon source adding bag 510 is opened or closed by a tightening device so as to provide sufficient nutrients for free anaerobic bacteria in sludge and sewage, and improve the decomposition efficiency of nitrate nitrogen in sewage.
When the carbon source is actually mixed in construction, an inlet 353 is arranged on the back surface of the flow pushing cover 350, a flow guiding propeller 354 is arranged in the flow pushing cover 350, the guiding direction of the flow guiding propeller 354 is directed to the flow pushing opening 351 from the inlet 353, and the lifting unit drives the carbon source tank 530 to vertically apply and to be close to or far from the inlet 353.
By arranging the guiding propeller 354 in the flow pushing cover 350, after the carbon source is released from the carbon source strip-shaped opening 511, the guiding propeller 354 absorbs the carbon source into the introducing port 353 and disperses the carbon source towards the flow pushing opening 351, so that the carbon source can be effectively mixed, and the utilization rate of the carbon source is improved.
Preferably, in order to open and release the carbon source adding bag 510 when descending and close the pipe when ascending, the tightening device includes tightening ropes 540 disposed at two ends of the carbon source adding bag 510, a tightening bracket 521 is disposed on the pipe body of the support pipe 520, one end of the tightening rope 540 is connected to one end of a tightening slide bar 541, the tightening slide bar 541 is horizontal and forms a sliding fit with the tightening bracket 521, a tightening spring 522 is sleeved at the end of the tightening slide bar 541 extending out of the tightening bracket 521, two ends of the tightening spring 522 are abutted against the rod ends of the tightening bracket 521 and the tightening slide bar 541, a tightening roller 542 is disposed at the end of the tightening slide bar 541, a wheel core of the tightening roller 542 is horizontally disposed, and the tightening roller 542 is abutted against a tightening flap 543 disposed beside.
In order to tension the tightening rope 540 to ensure the reliability of closing the carbon source adding bag 510, a transition bracket 523 is provided on the tube body of the support tube 520, a transition wheel 5231 is provided on the transition bracket 523, and the tightening rope 540 is rolled on the wheel body of the transition wheel 5231.
Preferably, in order to implement the lifting of the whole carbon source adding equipment, the lifting unit comprises a lifting slide bar 550 arranged on the upper cover of the denitrification tank 300, the lifting slide bar 550 is vertically arranged, a lifting rod 560 is arranged beside the lifting slide bar 550 in parallel, a lifting rack is arranged on the lifting rod 560 and is meshed with a lifting gear 561, and the lifting gear 561 is connected with an output shaft of a lifting motor 562.
The improved graded water inlet multistage and multistage biological nitrogen and phosphorus removal process comprises the following steps:
firstly, primarily filtering sewage through a coarse grating and a fine grating;
secondly, removing residual silt and grease in the primarily treated sewage through a slag extractor and a grease scraping device;
thirdly, guiding the primarily filtered sewage into a primary sedimentation tank for primary sedimentation;
step four, the sewage after primary sedimentation is led into an aerobic tank 100 for primary treatment, and organic nitrogen in the sewage is decomposed and converted into ammonia nitrogen under the action of ammoniation bacteria by using microorganisms in the aerobic tank 100;
fifthly, the sewage subjected to the primary treatment in the aerobic tank 100 overflows from the guide outlet into a unit nitrification cavity 210 of the nitrification tank 200, and is further decomposed and oxidized into nitrate nitrogen under the action of nitrifying bacteria;
sixthly, the sewage in the water storage cavity 230 is led out to the denitrification tank 300 through a lifting pump for denitrification treatment;
seventhly, starting a flow pusher 352 on the flow pushing cover 350 to enable sewage in the unit denitrification cavity 310 to circularly and repeatedly flow;
eighthly, starting the disturbance electric cylinder 326 to enable the disturbance plate 321 to be positioned in the denitrification cavity 310 to be disturbed, so that the sewage is positioned in the denitrification cavity 310 to repeatedly and circularly flow, and the denitrifying bacteria are effectively combined with nitrate nitrogen in the sewage;
ninth, starting the lifting unit to enable the carbon source adding bag 510 to extend into the unit denitrification cavity 310, enabling the carbon source in the carbon source adding bag 510 to be released at the position of the flow pushing cover 350, uniformly dispersing the carbon source in the unit denitrification cavity 310 through the flow pushing cover 350, reducing nitrate nitrogen generated in the nitrification process into gaseous nitrogen by using denitrifying bacteria, and discharging the gaseous nitrogen into the atmosphere to finish the treatment of sewage;
and step ten, rotating the water sealing plate 340, and communicating an outlet 341 arranged on the cylinder wall of the water sealing plate 340 with a water guide opening 311 arranged on the denitrification cavity 310, thereby realizing the discharge of the treated sewage.
Claims (10)
1. The utility model provides an improvement type is multistage biological nitrogen and phosphorus removal device of intaking in grades which characterized in that: including good oxygen pond (100), nitrification tank (200) and denitrification tank (300), good oxygen pond (100), nitrification tank (200) and denitrification tank (300) are integrated to be set up in handling the pond, be provided with carbon source interpolation equipment in denitrification tank (300), carbon source interpolation equipment is used for supplementing the carbon source to denitrification tank (300), it has good oxygen cavity (110) of multiunit to cut apart in good oxygen pond (100), all be provided with the inlet tube in the unit cavity, it nitrifies cavity (210) to be provided with multiunit unit in pond (200), the unit that sets up in unit nitrification cavity (210) and denitrification tank (300) is denitrified cavity (310) and is linked together.
2. The improved graded water inlet multistage and multistage biological nitrogen and phosphorus removal device according to claim 1, is characterized in that: the aerobic tank (100) is integrally in a circular tube-shaped structure, a central partition frame (120) is arranged in the aerobic tank (100), the central partition frame (120) comprises a central rod (121) arranged at the center of the aerobic tank (100), a plurality of groups of partition plates (122) are circumferentially distributed on the rod body of the central rod (121) at intervals, one ends of the plurality of groups of partition plates (122) are fixed on the outer wall of the central rod (121), the plurality of groups of partition plates (122) are arranged along the length direction of the central rod (121), one side end faces of the plurality of groups of partition plates (122) are arranged with the inner wall of the aerobic tank (100) at intervals, the central rod (121) is connected with an adjusting unit, the adjusting unit drives the central rod (121) to rotate repeatedly, and the adjacent partition plates (122) and the inner wall of the aerobic tank (100) form a unit aerobic cavity (110); one end of the aerobic tank (100) is provided with a closed end, the closed end is provided with a plurality of groups of water inlet pipes (130), and the plurality of groups of water inlet pipes (130) are communicated with a unit aerobic cavity (110) formed by the adjacent partition plates (122) and the inner wall of the aerobic tank (100).
3. The improved staged water inlet multistage and multistage biological nitrogen and phosphorus removal device as claimed in claim 2, wherein: one end of the central partition frame (120) is provided with a water baffle (140), the water baffle (140) extends to one end of the aerobic tank (100), the water baffle (140) and the water inlet pipe (130) form opening or closing fit, the surface of the water baffle (140) is parallel to the end surface of the aerobic tank (100), the water baffle (140) is provided with a notch (141), and the notch (141) is communicated with or blocked from the water inlet pipe (130); the baffle (122) is kept away from one side terminal surface of well core rod (121) and is provided with disturbance flange (1221), the inner wall of disturbance flange (1221) and aerobic tank (100) is close to or keeps away from, adjusting unit is including setting up adjusting gear (123) in well core rod (121) one end, adjusting gear (123) and regulation rack (124) meshing, adjusting rack (124) are connected with the piston rod of adjusting cylinder (125).
4. The improved staged water inlet multistage and multistage biological nitrogen and phosphorus removal device as claimed in claim 3, wherein: the aerobic tank (100) is integrally and obliquely arranged, an included angle between the aerobic tank (100) and the horizontal plane is adjusted to form, a liquid outlet of the aerobic tank (100) is arranged at the high-end position of the aerobic tank (100), an aeration pipe (150) is arranged in the unit aerobic cavity (110), and the aeration pipe (150) is fixedly connected with the partition plate (122); one end of a cylinder body of the aerobic tank (100) is hinged in the treatment tank, a wedge block (160) is arranged on the cylinder body of the aerobic tank (100), the wedge block (160) is abutted against an adjusting roller (161), a wheel frame of the adjusting roller (161) is connected with a piston rod of an adjusting oil cylinder (162), and the piston rod of the adjusting oil cylinder (162) is horizontally arranged; overflow ports (220) are arranged on unit nitrification cavities (210) of the nitrification tank (200), the overflow ports (220) are communicated with the water storage cavity (230), and a lift pump is arranged in the water storage cavity (230) and is communicated with a unit denitrification cavity (310) of the denitrification tank (300).
5. The improved staged water inlet multistage and multistage biological nitrogen and phosphorus removal device as claimed in claim 4, wherein: roundabout plates (320) are arranged in the denitrification tank (300), the roundabout plates (320) are integrally U-shaped, a plurality of groups of roundabout plates (320) are arranged in the denitrification tank (300), one side plate surface of each adjacent roundabout plate (320) extends into an opening of the other roundabout plate (320), and a unit denitrification cavity (310) is formed between the roundabout plates (320); the front end of the denitrification tank (300) is provided with a backflow chamber (330), and the backflow chamber (330) is communicated with the unit denitrification cavity (310).
6. The improved graded water inlet multistage biological nitrogen and phosphorus removal device as claimed in claim 5, characterized in that: the denitrification device is characterized in that a water guide hole (311) is formed in the denitrification cavity (310), a water sealing plate (340) is arranged on the water guide hole (311), the water sealing plate (340) is rotatably arranged on the denitrification cavity (310), the water sealing plate (340) is integrally cylindrical, a cylinder core of the water sealing plate (340) is vertical, an outlet (341) is formed in the cylinder wall of the water sealing plate, the outlet (341) and the water guide hole (311) are communicated and cut off, a connecting driving rod (342) is arranged in the center of the water sealing plate (340), a toggle gear (343) is arranged at the upper end of the connecting driving rod (342), the toggle gear (343) is meshed with the toggle rack (344), and the toggle rack (344) is horizontal and is connected with a piston rod of a toggle electric cylinder (345).
7. The improved staged water inlet multistage and multistage biological nitrogen and phosphorus removal device as claimed in claim 6, wherein: the plate surface of the circuitous plate (320) is hinged with a disturbance plate (321), a hinged shaft of the disturbance plate (321) is vertically arranged, a torsional spring is sleeved on the hinged shaft of the disturbance plate (321), two ends of the torsional spring are respectively connected and abutted with the hinged shaft and the disturbance plate (321), a disturbance arm (327) is arranged at the shaft end of the hinged shaft, a disturbance wheel (323) is arranged at the overhanging end of the disturbance arm (327), the disturbance wheel (323) is abutted with the disturbance wedge block (324), the disturbance wedge block (324) is discontinuously fixed on a disturbance drive plate (325), the disturbance drive plate (325) is arranged in parallel with a disturbance rack (344), and the disturbance drive plate (325) is connected with a piston rod of a disturbance electric cylinder (326);
the disturbance wedges (324) are arranged on two sides of the disturbance drive plate (325), a plurality of groups of disturbance plates (321) are arranged at intervals along the length direction of the circuitous plate (320), the disturbance wheels (323) on the hinge shafts of the adjacent disturbance drive plates (325) are abutted against the disturbance wedges (324) on the two sides of the disturbance drive plates (325), and the rotation directions of the adjacent disturbance plates (321) are opposite.
8. The improved graded water inlet multistage biological nitrogen and phosphorus removal device as claimed in claim 7, characterized in that: the front end and the rear end of a channel formed by the unit denitrification cavity (310) are respectively provided with a flow pushing cover (350), the flow pushing covers (350) are vertically arranged, a plurality of groups of flow pushing openings (351) are arranged on the flow pushing covers (350) in an array manner, and the flow pushing covers (350) are communicated with a flow guide opening of a flow pusher (352) through a pipeline;
the back of the flow pushing cover (350) is provided with an introduction port (353), a flow guiding propeller (354) is arranged in the flow pushing cover (350), the guiding direction of the flow guiding propeller (354) points to the flow pushing opening (351) from the introduction port (353), and the lifting unit drives the carbon source tank (530) to vertically apply and to be close to or far away from the introduction port (353).
9. The improved staged water inlet multistage and multistage biological nitrogen and phosphorus removal device as claimed in claim 8, wherein: the carbon source adding equipment comprises a carbon source adding bag (510) which is arranged at the upper position and the lower position in a unit denitrification cavity (310), the carbon source adding bag (510) is made of a flexible material, supporting pipes (520) are respectively arranged at two ends of the carbon source adding bag (510), the supporting pipes (520) are communicated with an outlet of a carbon source tank (530), the supporting pipes (520) are connected with a lifting unit, and the lifting unit drives the supporting pipes (520) and the carbon source adding bag (510) to move up and down and is close to or far away from the unit denitrification cavity (310); the carbon source adding bag (510) is provided with a carbon source strip-shaped opening (511), the strip-shaped opening (511) is arranged along the length direction of the carbon source adding bag (510), two ends of the carbon source adding bag (510) are provided with tightening devices, and the tightening devices are used for lengthening and loosening the carbon source adding bag (510) and tightening and opening the carbon source strip-shaped opening (511);
the tightening device comprises tightening ropes (540) arranged at two ends of a carbon source adding bag (510), a tightening bracket (521) is arranged on a pipe body of the supporting pipe (520), one end of each tightening rope (540) is connected with one end of a tightening slide bar (541), the tightening slide bars (541) are horizontal and form sliding fit with the tightening bracket (521), tightening springs (522) are sleeved at rod ends of the tightening slide bars (541) extending out of the tightening bracket (521), two ends of each tightening spring (522) are abutted against the rod ends of the tightening bracket (521) and the tightening slide bar (541) respectively, tightening rollers (542) are arranged at the rod ends of the tightening slide bars (541), wheel cores of the tightening rollers (542) are arranged horizontally, and the tightening rollers (542) are abutted against tightening folded plates (543) arranged beside; a transition support (523) is arranged on the pipe body of the support pipe (520), a transition wheel (5231) is arranged on the transition support (523), and the tightening rope (540) is rolled on the wheel body of the transition wheel (5231).
10. An improved graded water inlet multistage multi-section biological nitrogen and phosphorus removal process is characterized in that: the improved type graded water inlet multistage multi-section biological nitrogen and phosphorus removal process comprises the following steps:
firstly, primarily filtering sewage through a coarse grating and a fine grating;
secondly, removing residual silt and grease in the primarily treated sewage through a slag extractor and a grease scraping device;
thirdly, guiding the primarily filtered sewage into a primary sedimentation tank for primary sedimentation;
fourthly, the sewage which is primarily precipitated is led into an aerobic tank (100) for primary treatment, and organic nitrogen in the sewage is decomposed and converted into ammonia nitrogen under the action of ammonifying bacteria by using microorganisms in the aerobic tank (100);
fifthly, the sewage subjected to primary treatment in the aerobic tank (100) overflows into a unit nitrification cavity (210) of the nitrification tank (200) from a guide outlet, and is further decomposed and oxidized into nitrate nitrogen under the action of nitrifying bacteria;
sixthly, guiding the sewage in the water storage cavity (230) into a denitrification tank (300) through a lifting pump for denitrification treatment;
seventhly, starting a flow pusher (352) on the flow pushing cover (350) to enable sewage in the unit denitrification cavity (310) to circularly and repeatedly flow;
eighthly, starting a disturbance electric cylinder (326) to enable a disturbance plate (321) to be positioned in the denitrification cavity (310) to disturb, so that the sewage is positioned in the denitrification cavity (310) to repeatedly and circularly flow, and the denitrifying bacteria are effectively combined with nitrate nitrogen in the sewage;
ninth, starting the lifting unit to enable the carbon source adding bag (510) to extend into the unit denitrification cavity (310), enabling the carbon source in the carbon source adding bag (510) to be released at the position of the flow pushing cover (350), uniformly dispersing the carbon source in the unit denitrification cavity (310) through the flow pushing cover (350), reducing nitrate nitrogen generated in the nitrification process into gaseous nitrogen by using denitrifying bacteria, and discharging the gaseous nitrogen into the atmosphere to finish the treatment of sewage;
and step ten, rotating the water sealing plate (340), and communicating an outlet (341) arranged on the cylinder wall of the water sealing plate (340) with a water guide port (311) arranged on the denitrification cavity (310), thereby realizing the discharge of the treated sewage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211065828.6A CN115403146A (en) | 2022-09-01 | 2022-09-01 | Improved type graded water inlet multistage multi-section biological nitrogen and phosphorus removal device and process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211065828.6A CN115403146A (en) | 2022-09-01 | 2022-09-01 | Improved type graded water inlet multistage multi-section biological nitrogen and phosphorus removal device and process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115403146A true CN115403146A (en) | 2022-11-29 |
Family
ID=84164689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211065828.6A Pending CN115403146A (en) | 2022-09-01 | 2022-09-01 | Improved type graded water inlet multistage multi-section biological nitrogen and phosphorus removal device and process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115403146A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116573723A (en) * | 2023-06-16 | 2023-08-11 | 国合绿能生态(无锡)有限公司 | Sewage biological denitrification process and device based on multistage and multistage AO (anaerobic-anoxic) process |
-
2022
- 2022-09-01 CN CN202211065828.6A patent/CN115403146A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116573723A (en) * | 2023-06-16 | 2023-08-11 | 国合绿能生态(无锡)有限公司 | Sewage biological denitrification process and device based on multistage and multistage AO (anaerobic-anoxic) process |
| CN116573723B (en) * | 2023-06-16 | 2023-12-15 | 国合绿能生态(无锡)有限公司 | Sewage biological denitrification process and device based on multistage and multistage AO (anaerobic-anoxic) process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104986923B (en) | A kind of apparatus and method of the multistage A/O biological denitrificaions based on municipal sewage short distance nitration Anammox | |
| CN101503248B (en) | Composite biological film activated sludge denitrification dephosphorization denitrification method and reactor thereof | |
| CN102964035B (en) | Device for autotrophic nitrogen removal of composite biological membrane and operation method | |
| CN101786730B (en) | Method and equipment for cross backflow two-stage double-expansion granular sludge treatment of coking wastewater | |
| CN102674537A (en) | Reversed-order SBR (Sequencing Batch Reactor) water processing device and method for enhanced nitrogen removal | |
| CN115403146A (en) | Improved type graded water inlet multistage multi-section biological nitrogen and phosphorus removal device and process | |
| CN111559837A (en) | Landfill leachate biochemical treatment system and process | |
| CN203947006U (en) | A kind of MBR integrated experimental device of convertible treatment process | |
| CN115403140B (en) | Annular runway circulation type anaerobic tank | |
| CN113845219B (en) | Device for stably realizing shortcut nitrification anaerobic ammonia oxidation process | |
| CN212713125U (en) | A/O process integrated sewage treatment device | |
| CN115385451A (en) | Two-stage A/O activated sludge process sewage treatment system and process | |
| CN214167719U (en) | Rare earth tail water denitrification treatment device | |
| CN101054233A (en) | Zeolite strengthened anaerobic ammoxidation sewage processing technique | |
| CN212356953U (en) | Landfill leachate biochemical treatment system | |
| CN211255616U (en) | Utilize carrier filler improvement AO system to combine sewage treatment system of biological filter | |
| CN210825614U (en) | （AO）2- -precipitation integrated multistage circulation reactor | |
| CN109354171B (en) | High-efficiency autotrophic nitrogen removal system based on MBBR and operation method | |
| CN203451338U (en) | AABR (anaerobic aerobic biofilm reactor)-combined type MBR (membrane bioreactor) integrated device for treating organic waste water | |
| CN112174324A (en) | Leachate biochemical section treatment system and method for efficient denitrification | |
| CN111285560A (en) | A/O process integrated sewage treatment device | |
| CN114133032A (en) | Novel tunnel type fixed bed reactor for sewage treatment | |
| CN112093896A (en) | Low-oxygen dynamic membrane integrated reactor for nitrogen and phosphorus removal of sewage and purification method | |
| CN205328825U (en) | Dispose of sewage and realize regenerating AOOC combination equipment of water | |
| CN1450003A (en) | Batch circulated upflow sludge bed organic waste water treatment process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20221129 |
|
| RJ01 | Rejection of invention patent application after publication |