CN110963571A - Synchronous nitrogen and phosphorus removal integrated reactor - Google Patents
Synchronous nitrogen and phosphorus removal integrated reactor Download PDFInfo
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- CN110963571A CN110963571A CN201811139328.6A CN201811139328A CN110963571A CN 110963571 A CN110963571 A CN 110963571A CN 201811139328 A CN201811139328 A CN 201811139328A CN 110963571 A CN110963571 A CN 110963571A
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 22
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 9
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 title claims abstract description 7
- 229910052698 phosphorus Inorganic materials 0.000 title claims abstract description 7
- 239000011574 phosphorus Substances 0.000 title claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 148
- 239000010865 sewage Substances 0.000 claims abstract description 54
- 238000010992 reflux Methods 0.000 claims abstract description 38
- 239000007788 liquid Substances 0.000 claims abstract description 32
- 238000005192 partition Methods 0.000 claims abstract description 21
- 230000001546 nitrifying effect Effects 0.000 claims abstract description 12
- 239000010802 sludge Substances 0.000 claims description 124
- 239000000945 filler Substances 0.000 claims description 13
- 230000007246 mechanism Effects 0.000 claims description 12
- 238000005273 aeration Methods 0.000 claims description 10
- 241000405070 Percophidae Species 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 15
- 230000000694 effects Effects 0.000 abstract description 9
- 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 abstract description 7
- 238000009826 distribution Methods 0.000 description 15
- 230000008569 process Effects 0.000 description 13
- 238000006243 chemical reaction Methods 0.000 description 9
- 230000008719 thickening Effects 0.000 description 9
- 238000007599 discharging Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 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 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000004568 cement Substances 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000004062 sedimentation Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000010962 carbon steel Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000005276 aerator Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010801 sewage sludge Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- 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
- 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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
- C02F2101/163—Nitrates
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
- C02F2301/043—Treatment of partial or bypass streams
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- 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 discloses a synchronous nitrogen and phosphorus removal integrated reactor which is divided into an inner part and an outer part by a partition plate, wherein a water inlet device, a sewage treatment area and a water collecting area are positioned in the inner part, the water inlet device is communicated with a sewage inlet pipe and positioned at the bottom of the reactor, the sewage treatment area is positioned above the water inlet device, the sewage treatment area comprises an anaerobic area, an anoxic area and an aerobic area which are arranged from bottom to top, the water collecting area is positioned above the aerobic area, a nitrifying liquid reflux device is communicated between the water collecting area and the anaerobic area, and a nitrifying liquid reflux mixing area is formed between the anoxic area and the anaerobic area. The method has the advantages that the nitrification liquid return pipe is communicated between the water collecting area and the anaerobic area, so that the nitrification liquid treated by the aerobic area flows back, and then passes through the anoxic area again to carry out denitrification treatment for converting nitrate nitrogen into nitrogen, thereby reducing the total nitrogen content in the sewage and achieving the denitrification effect.
Description
Technical Field
The invention relates to the field of sewage treatment process technology and equipment, in particular to a synchronous nitrogen and phosphorus removal integrated reactor.
Background
With the development of economic society, the environmental pollution problem is becoming more serious, and water pollution treatment has become one of the hot spots concerned in the environmental protection field at home and abroad. In a water or wastewater treatment plant, A2The O process is widely used as an effective synchronous nitrogen and phosphorus removal process. But A is2The O process needs to build a plurality of structures such as an anaerobic tank, an anoxic tank, an aerobic tank, a secondary sedimentation tank and the like, all the structures are dispersedly arranged in a plane, and in addition, facilities such as an external nitrifying liquid, a sludge reflux pump, a valve pipeline and the like need to be matched, so that the process flow route is complex, the number of equipment is large, the construction cost is high, and the management and the maintenance are inconvenient. In the field of sewage treatment, efficient and rapid denitrification treatment equipment suitable for small and medium-sized sewage treatment stations is not common. A above2The occupied area required by the O process is large. There is the enterprise to carry out the integrated design of modularization to quick denitrogenation reaction unit, like the patent: aerobic → anoxic → anaerobic integrated modular sewage rapid denitrification reaction device and treatment method (application number: CN201010208203.3), wherein a sewage integrated treatment device is disclosed, which is used for the integrated treatment of the rapid denitrification technology of sewage, and comprises an underwater spiral aerator (1), a porous biological contact filler (4), a mud-water separation flow guide pore plate (5), a water outlet tank (7), a reaction device outer cylinder (7), an annular water inlet pipe (8), a drain pipe (11), a sludge discharge pipe (12), a reaction inner cylinder (15), a flow guide cylinder (16), a sludge reflux baffle (17), a water distribution baffle (17), a sludge reflux area baffle bracket (18) and a support network (22) of the porous biological contact filler, but the patent only has a sludge reflux process, does not have nitrification liquid reflux, can only remove ammonia nitrogen, and has no effect on the removal of total nitrogen; in addition, the equipment in this patent only uses the mud reflux structure, does not possess the sludge thickening function, needs the supporting concentrated pond in addition, and overall structure is relatively poor to sewage sludge's treatment effect.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a synchronous nitrogen and phosphorus removal integrated reactor, wherein a concentration tank is integrated into the reactor, the sewage and sludge concentration efficiency is improved, and meanwhile, a nitrifying liquid reflux device is added, so that the total nitrogen content in sewage is reduced.
The purpose of the invention is realized by adopting the following technical scheme:
a synchronous denitrification and dephosphorization integrated reactor is divided into an inner part and an outer part by a clapboard, wherein,
the device comprises a water inlet device, a sewage treatment area and a water collecting area, wherein the water inlet device is communicated with a sewage inlet pipe and is positioned at the bottom of a reactor, the sewage treatment area is positioned above the water inlet device and comprises an anaerobic area, an anoxic area and an aerobic area which are arranged from bottom to top, the water collecting area is positioned above the aerobic area, a nitrified liquid reflux device is communicated between the water collecting area and the anaerobic area, and a nitrified liquid reflux mixing area is formed between the anoxic area and the anaerobic area;
the sludge treatment area is positioned in the outer part, the water collecting area is communicated with the sludge treatment area through a guide groove extending downwards, and a sludge discharge pipe and a sludge backflow mechanism communicated with the anaerobic area are arranged in the sludge treatment area.
Furthermore, an aeration device is arranged at the junction of the anoxic zone and the aerobic zone, the aerobic zone is positioned above the aeration device, the anoxic zone is positioned below the aeration device, and biological fillers are arranged in the aerobic zone and the anoxic zone.
Further, the sludge treatment area comprises a settling area and a concentration area, the settling area is located above the concentration area, an outlet of the diversion trench is located between the settling area and the concentration area, a sludge concentration hopper formed by a large-angle slope is arranged at the bottom of the concentration area, and the sludge backflow mechanism is arranged in the sludge concentration hopper.
Furthermore, a sludge return pipe is arranged on the sludge discharge pipe and is communicated with the anaerobic zone.
Furthermore, a sludge return slit communicated with the anaerobic zone is arranged at the bottom of the sludge concentration hopper.
Furthermore, an adjusting structure for adjusting the area of the sludge backflow seam is arranged on the sludge backflow seam.
Furthermore, an underwater sludge pushing pump which is communicated with the anaerobic zone and used for pushing the sludge to the water inlet device is arranged at the bottom of the sludge concentration hopper.
Furthermore, the nitrifying liquid reflux device comprises a central reflux pipe positioned in the center of the water collecting area, a drain pipe positioned at the junction of the anoxic area and the anaerobic area and communicated with the central reflux pipe, and a underwater propeller positioned in the central reflux pipe.
Furthermore, the drain pipe is radially arranged, and a bent pipe with a flow limiting hole plate is arranged at the tail end of the downward bend at the water outlet of the drain pipe.
Furthermore, the water inlet device comprises an isolation plate arranged at the bottom of the reactor and a hydraulic nozzle arranged on the isolation plate, a small-upper large-lower jet hole communicated with the water inlet pipe is arranged in the hydraulic nozzle, a duckbill check valve with a flat nozzle structure and a water stopping and non-return effect is arranged on a jet hole, and the hydraulic nozzle is uniformly distributed on the isolation plate.
Compared with the prior art, the invention has the beneficial effects that:
a nitrifying liquid return pipe is communicated between the water collecting area and the anaerobic area, so that nitrifying liquid treated by the aerobic area flows back, and then passes through the anoxic area again to be subjected to denitrification treatment of changing nitrate nitrogen into nitrogen, the total nitrogen content in sewage is reduced, and the denitrification effect is improved.
Drawings
FIG. 1 is a schematic diagram of the working principle of an embodiment of the present invention;
FIG. 2 is a schematic view of the internal structure of a reactor according to a first embodiment of the present invention;
FIG. 3 is a schematic view of the internal structure of a reactor according to a second embodiment of the present invention;
FIG. 4 is a schematic view of the internal structure of a reactor according to a third embodiment of the present invention;
FIG. 5 is a schematic top view of a reactor according to an embodiment of the present invention;
FIG. 6 is a schematic top view of a reactor with a working bridge according to an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a water inlet device according to an embodiment of the present invention;
FIG. 8 is a schematic cross-sectional view of a water inlet device according to an embodiment of the present invention;
FIG. 9 is a schematic structural view of a hydrajetting nozzle in accordance with an embodiment of the present invention;
in the figure:
10. a reactor; 11. a partition plate; 12. an exterior; 13. an inner portion; 14. a water-stop sheet; 15. a housing;
20. a water inlet device; 21. a separator plate; 22. a hydraulic nozzle; 23. a jet hole; 24. a sewage inlet pipe; 25. a water distribution area; 26. a duckbill check valve;
30. a sewage treatment area; 31. an anaerobic zone; 32. an anoxic zone; 33. an aerobic zone; 34. a nitrifying liquid reflux device; 341. a central return pipe; 342. a drain pipe; 343. a water down-flow pump; 344. a water suction port; 345. a water distribution port; 346. bending the pipe; 347. a working bridge; 348. a hanger; 35. an aeration device; 36. biological fillers; 37. mounting a column;
40. a water collection area; 41. a water collection tank; 42. a diversion trench; 421. a flow guide part;
50. a sludge treatment area; 51. a sludge discharge pipe; 52. a sludge reflux mechanism; 521. sludge backflow seam; 522. a underwater dredge pump; 523. a sludge return pipe; 524. a sludge reflux pump; 53. a settling zone; 531. a sedimentation sloping plate; 54. a concentration zone; 55. a sludge concentration hopper; 551. a large-angle slope; 56. and (4) an overflow port.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.
In the description of the present invention, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., it indicates that the orientation and positional relationship shown in the drawings are based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated without limiting the specific scope of protection of the present invention.
Furthermore, if the terms "first" and "second" are used for descriptive purposes only, they are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. Thus, a definition of "a first" or "a second" feature may explicitly or implicitly include one or more of the features, and in the description of the invention, "a number" means two or more unless explicitly defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "assembled", "connected", and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; or may be a mechanical connection; the two elements can be directly connected or connected through an intermediate medium, and the two elements can be communicated with each other. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.
Referring to fig. 1 to 8 of the drawings, a simultaneous denitrification and dephosphorization integrated reactor according to an embodiment of the present invention will be explained in the following description, wherein a nitrification liquid reflux apparatus solves the problem that the existing integrated sewage treatment equipment has no effect on total nitrogen removal, reduces the total nitrogen content in the sewage, and improves the nitrogen removal effect.
As shown in the attached figures 1 to 4, a synchronous denitrification and dephosphorization integrated reactor is divided into an inner part 13 and an outer part 12 by a clapboard 11, wherein,
a water inlet device 20, a sewage treatment zone 30 and a water collecting zone 40 are positioned in the inner part 13, the water inlet device 20 is communicated with a sewage inlet pipe 24 and is positioned at the bottom of the reactor 10, the sewage treatment zone 30 is positioned above the water inlet device 20, the sewage treatment zone 30 comprises an anaerobic zone 31, an anoxic zone 32 and an aerobic zone 33 which are arranged from bottom to top, the water collecting zone 40 is positioned above the aerobic zone 33, a nitrified liquid reflux device 34 is communicated between the water collecting zone 40 and the anaerobic zone 31, and a nitrified liquid reflux mixing zone is formed between the anoxic zone 32 and the anaerobic zone 31;
the sludge treatment area 50 is positioned in the outer part 12, the water collection area 40 is communicated with the sludge treatment area 50 through a guide groove 42 extending downwards, and a sludge discharge pipe 51 and a sludge backflow mechanism 52 communicated with the anaerobic area 31 are arranged in the sludge treatment area 50.
As shown in fig. 1 to 4, the interior 13 of the reactor 10 is bounded by an aeration device 35, an aerobic zone 33 is arranged above, an anoxic zone 32 is arranged below, and an anaerobic zone 31 is arranged above the water inlet device 20 below, and the working principle of the embodiment is as follows: the sewage enters the reactor 10 from the water inlet device 20, enters the anaerobic zone 31, rises under the pressure of the water inlet device 20 and the lifting action of the water density difference formed by aeration of the upper aerobic zone, and then enters the anoxic zone 32, and is treated by the anoxic zone 32 and the aerobic zone 33, ammonia nitrogen in the sewage is changed into nitrate nitrogen or nitrite nitrogen after passing through the aerobic zone 33, although the form of the ammonia nitrogen is changed, the total nitrogen in the water is not changed, so in order to reduce the total nitrogen, the water after aerobic nitrification needs to pass through an anoxic environment to change the nitrate nitrogen and the nitrite nitrogen into nitrogen to be released from the water, and finally the aim of denitrification is achieved. Therefore, a nitrified liquid reflux device 34 is arranged, nitrified liquid which passes through the aerobic zone 33 and enters the water collecting zone 40 flows back to the junction of the anoxic zone 32 and the anaerobic zone 31, namely the starting end of the anoxic zone 32, and then enters the anoxic zone 32 again for denitrification reaction, and the denitrification reaction is performed on the premise that: nitrate nitrogen (nitrate nitrogen and nitrite nitrogen) is present in the water, an anoxic environment is present, and suitable nutrients (carbon source) for denitrification can be provided; the sewage is not subjected to aerobic nitrification when entering the reactor 10, the BOD content is high, a plurality of carbon sources are arranged in the sewage, the backflow position is not aerated, the sewage belongs to an anoxic environment, and denitrification can be performed after all conditions are met to finally change nitrate nitrogen or nitrite nitrogen into nitrogen, so that the total nitrogen content in the sewage is reduced.
More specifically, the nitrifying liquid reflux device 34 comprises a central reflux pipe 341 positioned in the center of the water collecting zone 40, a drain pipe 342 positioned at the junction of the anoxic zone 32 and the anaerobic zone 31 and communicated with the central reflux pipe 341, and a underwater propeller 343 positioned in the central reflux pipe 341. The water collecting area 40 is provided with water collecting tanks 41 distributed in a radial shape, sewage in the water collecting area 40 enters the water collecting tanks 41, one end of each water collecting tank 41 is communicated with a central return pipe 341, the other end of each water collecting tank 41 is communicated with a flow guide groove 42, the central return pipe 341 is a through pipe, the upper part of each water collecting tank is communicated with the water collecting tank 41, the lower part of each water collecting tank is communicated with a drain pipe 342, the upper part of each water collecting tank 41 is provided with a water suction port 344, the lower part of each water collecting tank is provided with a water distribution port 345, an underwater plug flow pump 343 is positioned at the upper part of the central return pipe 341, the underwater plug flow pump 343 is variable in frequency and adjustable in.
The nitrified liquid in the water collecting area 40 enters the water collecting tank 41 and is sucked into the central return pipe 341 by the underwater plug flow pump 343, the nitrified liquid is returned from top to bottom, the returned nitrified liquid is discharged from the water distributing port 345 and the water discharging pipe 342 at the lower part, for the purpose of uniform water distribution, the water discharging pipe 342 is radially arranged, the water discharging ports of the water discharging pipe 342 are uniformly distributed in a dotted manner at the junction of the anaerobic zone 31 and the anoxic zone 32 (namely, a nitrified liquid mixing zone), and the water discharging port of the water discharging pipe 342 is provided with a bent pipe 346 with a flow limiting pore plate (not shown) at the downward bent tail end. The device aims to uniformly distribute the discharged water at the bottom of the pool, if the device is a straight pipe opening, the returned water can jet to the peripheral inner wall, which is not beneficial to uniform water distribution, and the device is arranged into a downward elbow, a flow guide baffle is arranged on the water distribution opening of a central return pipe, and the water is mixed with the newly-entered sewage above the anaerobic zone 31 and then flows upwards in a scattered manner, so that the water is uniformly distributed in the reactor 10 and is wholly upwards, and the uniform distribution of the nitrified liquid is ensured; in addition, the end of the elbow is provided with a flow-limiting orifice plate, and the flow-limiting orifice plate is a sealing plate with a round hole and is used for ensuring that each water outlet has certain head loss and the outflow of each pipe opening is basically uniform. The water distribution port of the central return pipe is provided with a flow guide baffle plate for preventing nitrified liquid containing atomic oxygen from flowing downwards to enter an anaerobic zone so as to destroy the anaerobic environment.
The nitrifying liquid reflux device 34 is provided with an overhauling device in a mode, the overhauling device comprises a lifting frame 348 and a working bridge 347 for people to walk, the working bridge 347 is arranged above the central reflux pipe 341, the working bridge 347 and the central reflux pipe 341 are provided with openable and closable overhauling ports, the lifting frame 348 for moving the underwater propeller 343 is arranged above the overhauling ports, and the lifting frame 348 is provided with a manual or electric lifting device. As shown in fig. 2 to fig. 4 and fig. 6, the working bridge 347 is formed by welding profile steels into a truss girder structure, two ends of the working bridge are respectively supported on the top of two ends of the reactor 10, the center of the working bridge is supported on the central return pipe 341, the lower part of the central return pipe 341 is provided with a bracket supported on the partition plate 11, a square access hole of 1.0 × 1.0m is arranged on the middle walkway plate of the working bridge 347, and the access hole is closed to the walkway plate in normal operation. A fixed gantry crane is arranged on the upper portion of the access hole, and the access hole is opened when the bottom reflux pump needs to be overhauled, so that the underwater propeller pump 343 can be overhauled and replaced conveniently. The working bridge 347 is made of common steel, the carbon steel parts and the easy-to-corrode surfaces of the carbon steel parts need to be subjected to anti-corrosion treatment by taking measures, and the rust removal on the surfaces of the steel is carried out according to the GB7823 specification and reaches the sa 2.5-level specification.
The biological fillers 36 in the anoxic zone 32 and the aerobic zone 33 can be the same, elastic three-dimensional fillers, or corresponding biological fillers 36 can be arranged in the anoxic zone 32 according to the sewage treatment process requirements with different properties, and the density degree of the installed fillers is determined according to the water quality condition, so that a better denitrification effect is obtained. As shown in fig. 7, a filler mounting structure is arranged below the aeration device 35, the filler mounting structure comprises a plurality of mounting columns 37 arranged around the central reflux pipe 341, the mounting columns 37 are distributed in multiple layers, the mounting columns 37 on the upper layer and the lower layer are arranged in a staggered manner, and the biological filler 36 is sleeved on the mounting columns 37, so that the biological filler 36 is fully distributed in the anoxic zone 32, and the denitrification reaction process is accelerated.
The sewage from which the total nitrogen is removed is discharged into the sludge treatment area 50 through the water collecting tank 41 and the diversion trench 42 to realize the separation of the cement, and then the separated sludge is collected and discharged or the activated sludge is returned to the anaerobic area 31. More specifically, the reactor 10 of the present embodiment merges the thickening tanks together, the sludge treatment zone 50 includes a settling zone 53 and a thickening zone 54, the settling zone 53 is located above the thickening zone 54, the outlet of the guiding gutter 42 is located between the settling zone 53 and the thickening zone 54, the bottom of the thickening zone 54 is provided with a sludge thickening bucket 55 formed by a large-angle slope 551, and the sludge returning mechanism 52 is arranged in the sludge thickening bucket 55. The settling zone 53 is provided with a settling inclined plate 531, the outlet of the diversion trench 42 is positioned below the settling inclined plate 531, sewage from the diversion trench 42 moves upwards under the action of water pressure, the flow rate is slowed down when the sewage passes through the settling inclined plate 531, sludge in the sewage sinks, clear water floats upwards to realize cement separation, the floating clear water overflows from an overflow port 56 at the upper end of the outer part 12, the sludge sinks into a sludge concentration hopper 55, and is collected and concentrated by a large-angle slope 551 of the sludge concentration hopper 55 under the action of the water pressure and the self-weight of the sludge, so that the sludge concentration is realized, and meanwhile, part of activity flows back to the anaerobic zone 31 through the sludge backflow mechanism 52. The activated sludge returning to the anaerobic zone 31 is mixed with the newly-fed sewage and the return nitrification liquid under the action of the water inlet device 20, and then rises under the drive of the newly-fed sewage to enter the anoxic zone 32 and the aerobic zone 33 for secondary treatment and secondary sedimentation, and the activated sludge supplements a carbon source for the denitrification process, so that the shortage of the carbon source in the denitrification process is avoided. Meanwhile, the bottom of the sludge concentration hopper 55 is provided with a sludge discharge pipe 51, which discharges and collects part of the concentrated sludge and can be smoothly connected with the subsequent sludge dewatering and advanced treatment processes. The reactor 10 of the invention can be arranged by lifting, the overflow port 56 and the sludge discharge pipe 51 have higher water heads, and can be smoothly connected with the subsequent sludge dewatering and advanced treatment process section in elevation, and the clean water overflowing from the overflow port 56 and the sludge discharged from the sludge discharge pipe 51 do not need to be lifted for the second time.
The sludge backflow mechanism 52 has various structures, as shown in fig. 2, in the sludge backflow mechanism 52 of the first embodiment, a sludge backflow slit 521 communicated with the anaerobic zone 31 is arranged at the bottom of the sludge concentration bucket 55, activated sludge can enter the anaerobic zone 31 through the sludge backflow slit 521, and meanwhile, a sludge discharge pipe 51 is arranged at the bottom of the sludge concentration bucket 55, so that part of the concentrated sludge is discharged and collected, and can be smoothly connected with the subsequent sludge dewatering and deep treatment processes. The sludge return slit 521 can be directly arranged at the bottom of the partition plate 11 to fix the flow area, or an adjusting plate (not shown) can be arranged at the bottom of the partition plate 11, the adjusting plate and the shell 15 of the reactor 10 form the sludge return slit 521, an adjusting structure for adjusting the area of the sludge return slit 521 is arranged on the sludge return slit 521, and the adjusting structure changes the distance between the adjusting plate and the inner wall of the shell 15 of the reactor 10, so that the flow area of the sludge return slit 521 is changed, and the sludge return flow rate is controlled.
As shown in fig. 3, the sludge recirculation mechanism 52 of the second embodiment includes an underwater impeller pump 343 disposed in the sludge concentration tank 55 and communicating with the anaerobic zone 31 for impelling sludge toward the water intake device 20. More specifically, the underwater dredge pump 522 is directly arranged on the partition 11 to push the sludge from the thickening region 54 directly to the inner portion 13 to enter the anaerobic region 31, and the underwater dredge pump 522 can control the dredge amount through frequency conversion to obtain the optimal sludge return flow amount.
As shown in fig. 4, the sludge return mechanism 52 of the third embodiment includes a sludge return pipe 523 disposed on the sludge discharge pipe 51, and the sludge return pipe 523 communicates with the anaerobic zone 31. The sludge return pipe 523 is provided with a sludge return pump 524, which returns the sludge in the sludge discharge pipe 51 to the anaerobic zone 31 to be mixed with the newly entered sewage and the returned nitrifying liquid, and the sludge return pump 524 can control the return flow through frequency conversion to obtain the optimal sludge return flow.
As shown in fig. 2 to 4, the partition 11 forms a wall of the interior 13, the partition 11 and the shell 15 of the reactor 10 form an inner wall and an outer wall of the exterior 12, the guiding groove 42 is disposed outside the partition 11, the upper half of the partition 11 and the water stop plate 14 of the settling zone 53 form the guiding groove 42, the lowest end of the water stop plate 14 is provided with a guiding portion 421 inclined towards the exterior 12, and the area of the guiding portion 421 is larger than the area of the guiding groove 42, so that the speed of the sewage after the sewage exits from the water outlet of the guiding groove 42 is slowed down, which is beneficial to cement separation.
Since the water inlet device 20 of the reactor 10 of the present invention is located at the lowest end, the sewage needs to be pushed to the anoxic zone 32 and the aerobic zone 33, and the refluxed activated sludge and the nitrified liquid need to be mixed, the requirement for the driving force of the water inlet device 20 is high. The area of the bottom of the reactor 10 is large, the activated sludge can flow back to the bottom, and a large amount of sludge cannot be brought up by single-port inflow water, so that the water inlet device 20 of the embodiment adopts multi-point inflow water, the plurality of jet holes 23 are uniformly distributed at the bottom of the reactor 10, sludge in a large range can be brought up, the plurality of jet holes 23 are connected in parallel, and water flow is simultaneously jetted out to flush the back-flowing activated sludge upwards, so that the sludge is prevented from sinking to the bottom and blocking the water inlet device 20.
As shown in fig. 7, the water inlet device 20 includes a partition plate 21 disposed at the bottom of the reactor 10 and a hydraulic nozzle 22 disposed on the partition plate 21, a small-top and large-bottom jet hole 23 communicated with the water inlet pipe is disposed in the hydraulic nozzle 22, and the hydraulic nozzle 22 is uniformly distributed on the partition plate 21. The space between the partition board 21 and the bottom end of the reactor 10 is a water distribution area 25, a sewage inlet pipe 24 is arranged at the bottom of the water distribution area 25, sewage entering from the sewage inlet pipe 24 is filled in the water distribution area 25 firstly, so that the water pressure of each hydraulic nozzle 22 is consistent, then the sewage inlet pipe 24 is filled with water, and therefore the jet holes 23 in the hydraulic nozzles 22 are enabled to discharge water together, and the jet flow is consistent.
As shown in fig. 7 and 8, the hydraulic nozzle is a conical structure, the jet hole 23 is located inside 13 of the hydraulic nozzle 22 and is also a conical hole, so that the water outlet area of the jet hole 23 is smaller than the water inlet area, the water pressure of sewage flowing out of the jet hole 23 is larger, the water speed is higher, jet water flow can be formed, negative pressure is generated around the water flow, and sludge on the upper bottom part flows back. As shown in fig. 9, a rubber flat-nose-shaped duckbill check valve 26 is attached to the hydraulic nozzle, and when water pressure is present in the nozzle, the flat-nose is opened by internal pressure to discharge water, thereby forming a jet flow. When water inflow stops, the duckbill check valve 26 is closed under the action of external water pressure, so that sewage and sludge are prevented from entering the bottom water distribution system, and the sludge is prevented from depositing and blocking a water distribution orifice. More specifically, the ratio of the water entry area to the water exit area on the hydrajetting nozzle is about 10: 1. The inlet tube is equipped with water pressure controller, makes the water pressure of newly advancing sewage invariable to guarantee the stability of jet-propelled rivers, preferred, the water pressure of intaking of this embodiment is 10 meters water pressure.
In addition, since the bottom of the water distribution area 25 is easy to deposit sludge and the partition plate 21 is easy to deposit sludge due to sludge backflow, a sludge evacuation pipe (not shown) may be provided at the bottom of the water distribution area 25 and above the partition plate 21 for evacuating sludge during maintenance. In addition, the partition plate 21 can be detachably connected with the bottom of the reactor 10, so as to facilitate the cleaning and maintenance of the partition plate 21 and the hydraulic nozzles 22 thereon.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (10)
1. The utility model provides a synchronous nitrogen and phosphorus removal integral type reactor which characterized in that: is divided into an inner part and an outer part by a clapboard, wherein,
the device comprises a water inlet device, a sewage treatment area and a water collecting area, wherein the water inlet device is communicated with a sewage inlet pipe and is positioned at the bottom of a reactor, the sewage treatment area is positioned above the water inlet device and comprises an anaerobic area, an anoxic area and an aerobic area which are arranged from bottom to top, the water collecting area is positioned above the aerobic area, a nitrified liquid reflux device is communicated between the water collecting area and the anaerobic area, and a nitrified liquid reflux mixing area is formed between the anoxic area and the anaerobic area;
the sludge treatment area is positioned in the outer part, the water collecting area is communicated with the sludge treatment area through a guide groove extending downwards, and a sludge discharge pipe and a sludge backflow mechanism communicated with the anaerobic area are arranged in the sludge treatment area.
2. The integrated reactor of claim 1, which is characterized in that: an aeration device is arranged at the junction of the anoxic zone and the aerobic zone, the aerobic zone is positioned above the aeration device, the anoxic zone is positioned below the aeration device, and biological fillers are arranged in the aerobic zone and the anoxic zone.
3. The integrated reactor of claim 1, which is characterized in that: the sludge treatment area comprises a settling area and a concentration area, the settling area is positioned above the concentration area, the outlet of the diversion trench is positioned between the settling area and the concentration area, the bottom of the concentration area is provided with a sludge concentration hopper formed by a large-angle slope, and the sludge reflux mechanism is arranged in the sludge concentration hopper.
4. The integrated reactor of claim 3, which is characterized in that: and a sludge return pipe is arranged on the sludge discharge pipe and is communicated with the anaerobic zone.
5. The integrated reactor of claim 3, wherein the bottom of the sludge concentration hopper is provided with a sludge return slit communicated with the anaerobic zone.
6. The integrated reactor of claim 5, wherein the sludge backflow seam is provided with an adjusting structure for adjusting the area of the sludge backflow seam.
7. The integrated reactor of claim 3, wherein the bottom of the sludge concentration hopper is provided with an underwater sludge pump communicated with the anaerobic zone and used for pushing sludge to flow to a water inlet device.
8. The integrated reactor of any one of claims 1 to 7, wherein the nitrifying liquid reflux device comprises a central reflux pipe positioned in the center of a water collecting zone, a drain pipe positioned at the junction of the anoxic zone and the anaerobic zone and communicated with the central reflux pipe, and a water-driven axial flow pump positioned in the central reflux pipe.
9. The integrated reactor of claim 8, wherein the water discharge pipes are radially arranged, and the water outlet of the water discharge pipes is provided with a bent pipe with a flow-limiting orifice plate at the end bent downwards.
10. The integrated reactor of any one of claims 1 to 7, wherein the water inlet device comprises a partition plate arranged at the bottom of the reactor and a hydraulic nozzle arranged on the partition plate, a small-top and large-bottom jet hole communicated with the water inlet pipe is arranged in the hydraulic nozzle, a duckbill check valve with a flat nozzle structure for stopping water and stopping water is arranged on the jet hole, and the hydraulic nozzle is uniformly distributed on the partition plate.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112028245A (en) * | 2020-11-02 | 2020-12-04 | 中铁环境科技工程有限公司 | Sewage treatment device |
| CN112759079A (en) * | 2020-12-16 | 2021-05-07 | 四川绿水环保工程有限公司 | Three-dimensional integrated sewage treatment process system |
| CN116535005A (en) * | 2023-06-29 | 2023-08-04 | 成都理工大学 | Intelligent synchronous nitrification and denitrification treatment system and method for domestic sewage |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101357814A (en) * | 2008-09-02 | 2009-02-04 | 深圳清华大学研究院 | Linkage processing method and apparatus of circulatory flow multiplex biochemistry and filtrating |
| CN101475294A (en) * | 2009-02-04 | 2009-07-08 | 新奥科技发展有限公司 | Biochemical treatment apparatus for wastewater treatment |
| CN201785244U (en) * | 2010-08-30 | 2011-04-06 | 河海大学 | Biofilter treatment system capable of switching treatment reaction types |
| CN103570127A (en) * | 2012-07-20 | 2014-02-12 | 大连丰泽节能环保工程技术有限公司 | Low reflux denitrogenation and phosphorus removal sewage treatment unit |
| CN206538257U (en) * | 2017-01-26 | 2017-10-03 | 广东中微环保生物科技有限公司 | A kind of anaerobic/anoxic aerobic integratedization biological treatment of waste water system |
| CN209143830U (en) * | 2018-09-28 | 2019-07-23 | 浙江联池水务设备股份有限公司 | Synchronous denitrification dephosphorizing integral reactor |
-
2018
- 2018-09-28 CN CN201811139328.6A patent/CN110963571A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101357814A (en) * | 2008-09-02 | 2009-02-04 | 深圳清华大学研究院 | Linkage processing method and apparatus of circulatory flow multiplex biochemistry and filtrating |
| CN101475294A (en) * | 2009-02-04 | 2009-07-08 | 新奥科技发展有限公司 | Biochemical treatment apparatus for wastewater treatment |
| CN201785244U (en) * | 2010-08-30 | 2011-04-06 | 河海大学 | Biofilter treatment system capable of switching treatment reaction types |
| CN103570127A (en) * | 2012-07-20 | 2014-02-12 | 大连丰泽节能环保工程技术有限公司 | Low reflux denitrogenation and phosphorus removal sewage treatment unit |
| CN206538257U (en) * | 2017-01-26 | 2017-10-03 | 广东中微环保生物科技有限公司 | A kind of anaerobic/anoxic aerobic integratedization biological treatment of waste water system |
| CN209143830U (en) * | 2018-09-28 | 2019-07-23 | 浙江联池水务设备股份有限公司 | Synchronous denitrification dephosphorizing integral reactor |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112028245A (en) * | 2020-11-02 | 2020-12-04 | 中铁环境科技工程有限公司 | Sewage treatment device |
| CN112759079A (en) * | 2020-12-16 | 2021-05-07 | 四川绿水环保工程有限公司 | Three-dimensional integrated sewage treatment process system |
| CN116535005A (en) * | 2023-06-29 | 2023-08-04 | 成都理工大学 | Intelligent synchronous nitrification and denitrification treatment system and method for domestic sewage |
| CN116535005B (en) * | 2023-06-29 | 2023-09-01 | 成都理工大学 | Intelligent synchronous nitrification and denitrification treatment system and method for domestic sewage |
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