CN110902823A - Be used for low carbon nitrogen to compare sewage treatment plant - Google Patents
Be used for low carbon nitrogen to compare sewage treatment plant Download PDFInfo
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- CN110902823A CN110902823A CN201910965995.8A CN201910965995A CN110902823A CN 110902823 A CN110902823 A CN 110902823A CN 201910965995 A CN201910965995 A CN 201910965995A CN 110902823 A CN110902823 A CN 110902823A
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- 239000010865 sewage Substances 0.000 title claims abstract description 37
- CKUAXEQHGKSLHN-UHFFFAOYSA-N [C].[N] Chemical compound [C].[N] CKUAXEQHGKSLHN-UHFFFAOYSA-N 0.000 title claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 43
- 230000003647 oxidation Effects 0.000 claims abstract description 33
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 33
- 239000000945 filler Substances 0.000 claims abstract description 30
- 238000012856 packing Methods 0.000 claims abstract description 6
- 230000001546 nitrifying effect Effects 0.000 claims description 16
- 239000007788 liquid Substances 0.000 claims description 15
- 238000010992 reflux Methods 0.000 claims description 14
- 238000005273 aeration Methods 0.000 claims description 12
- 239000002351 wastewater Substances 0.000 claims description 7
- 239000002131 composite material Substances 0.000 claims description 5
- 238000005192 partition Methods 0.000 claims description 3
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- 229910052751 metal Inorganic materials 0.000 claims description 2
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- 230000003247 decreasing effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 11
- 230000007547 defect Effects 0.000 abstract description 4
- 239000010802 sludge Substances 0.000 description 18
- 241000894006 Bacteria Species 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 7
- 244000005700 microbiome Species 0.000 description 7
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 229910052698 phosphorus Inorganic materials 0.000 description 4
- 239000011574 phosphorus Substances 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 3
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 3
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
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- 239000007787 solid Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910002651 NO3 Inorganic materials 0.000 description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 2
- 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 2
- 239000002253 acid Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000009395 breeding Methods 0.000 description 2
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- 239000003344 environmental pollutant Substances 0.000 description 2
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 244000144972 livestock Species 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
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- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
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- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
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- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
- 229920011532 unplasticized polyvinyl chloride Polymers 0.000 description 1
- 238000009280 upflow anaerobic sludge blanket technology Methods 0.000 description 1
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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
- C02F3/301—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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
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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 relates to the technical field of sewage treatment, and discloses a sewage treatment device for low carbon-nitrogen ratio, which comprises an ABR (anaerobic baffled reactor) reactor, an anoxic reactor and a biological contact oxidation tank, wherein the ABR reactor and the biological contact oxidation tank are both of cylindrical structures and are coaxially arranged from inside to outside in sequence; a central pipe for water inflow and a plurality of first baffle plates and second baffle plates which are sequentially and horizontally arranged in a staggered manner are arranged in the ABR anaerobic reactor, and magnetic biological combined packing is arranged in a compartment formed by the first baffle plates and the second baffle plates; and a biological combined filler is arranged in the anoxic reactor and the biological contact oxidation tank. The device adopts an up-flow ABR anaerobic reactor, optimizes the defects of the traditional ABR, and ensures the treatment effect of the sewage with low carbon-nitrogen ratio by matching the ABR anaerobic reactor, the anoxic reactor and the biological contact oxidation tank.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a sewage treatment device for low carbon-nitrogen ratio, which integrates an ABR anaerobic reactor, an anoxic reactor and a biological contact oxidation tank.
Background
At present, the water pollution condition is serious, a lot of researches are carried out on domestic sewage, landfill leachate, black and odorous water and industrial wastewater, the pretreatment, anaerobic reaction and aerobic reaction are generally adopted for treatment, the biochemical property of the sewage is enhanced and the influence of solid particles and COD load of subsequent treatment is reduced by mainly utilizing a chemical reaction and physical treatment method in a pretreatment stage, but the general treatment process for the sewage with low carbon-nitrogen ratio, such as municipal sewage treatment and livestock and poultry breeding wastewater, is poor in treatment effect, or needs an additional carbon source for treatment, and has limitation on the application in practice.
Conventional ABR anaerobic reactors use a series of vertically mounted baffles in the reactor to divide the reactor into several reaction chambers connected in series, each of which can be considered as a relatively independent upflow sludge bed system (USB for short). The treated wastewater flows up and down along the baffle plate in the reactor and passes through the sludge bed of each reaction chamber in turn, and the organic substrates in the wastewater are removed by contacting with microorganisms. The microbial solids in the reactor are expanded and settled up and down in the compartments formed by the baffles by the gas generated in the reactor during the treatment, while the water flows horizontally at a slower rate throughout the reactor. The water flow flows around the baffle plate to increase the total length of the water flow in the reactor, and the biological solids are effectively retained in the reactor by the blocking of the baffle plate and the sedimentation of the sludge. The hydraulic flow regime of the ABR reactor is therefore closer to plug flow. Secondly, because the baffle plates form independent compartments in the reactor, each compartment can culture a microbial community adapted to the inlet substrate according to the difference of the inlet substrate, so that an anaerobic reaction acid production phase and a methanogenesis phase are separated along the way, the ABR reactor is equivalent to a two-phase anaerobic system in the overall performance, and the phase separation is realized. In general, the ABR reactor has a series of advantages of simple structure, low energy consumption, strong impact load resistance, high treatment efficiency and the like.
However, ABR reactors also have their disadvantages. First, the ABR reactor cannot be too deep to ensure a certain water flow and gas production rise rate. Secondly, how evenly the incoming water is distributed is also a problem. Furthermore, the first compartment of the ABR reactor has to bear a local load much larger than the average load, which may result in a reduction of the treatment efficiency, compared to a single-stage UASB reactor. Therefore, the ABR anaerobic reactor has better sewage effect, but also has the problems of slower inflow velocity, weak plug flow capacity, larger first-stage load and the like.
In summary, the problems of the prior art mainly include the following aspects: 1. the method has no high-efficiency treatment technology for the wastewater with low carbon-nitrogen ratio at present; 2. when the water inlet flow speed of the traditional ABR anaerobic reactor is high, sludge loss is easily caused, the stability of microorganisms at each stage is damaged, the sludge stirring is small due to the low flow speed, and the treatment efficiency is low. 3. The traditional ABR uses plug flow type to cause slower sludge flow, easily causes slower sludge flow and more dead zones. 4. When the existing ABR is used for sludge backflow, a lifting pump is required for lifting, the energy consumption is large, and the operation is complex. 5. The first compartment of the ABR reactor has to bear a local load much greater than the average load, and the effect of the decoction treatment is reduced. 6. The denitrification of the biochemical process section generally depends on an anoxic reaction stage, and the anaerobic reaction stage is not utilized, so the denitrification effect is poor.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a sewage treatment device for low carbon-nitrogen ratio, which adopts an up-flow ABR anaerobic reactor, and is matched with an anoxic reactor and a biological contact oxidation tank, thereby not only effectively solving the defects of the plug-flow ABR anaerobic reactor, but also having high treatment effect.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a sewage treatment device for low carbon-nitrogen ratio comprises an ABR anaerobic reactor, an anoxic reactor, a biological contact oxidation tank and a water inlet pump, wherein the ABR anaerobic reactor, the anoxic reactor and the biological contact oxidation tank are all cylindrical structures and are coaxially arranged from inside to outside in sequence;
the ABR anaerobic reactor is internally provided with a central pipe for water inflow and a plurality of first baffles and second baffles, the first baffles and the second baffles are sequentially and horizontally arranged in a staggered manner along the axial direction of the ABR anaerobic reactor, the first baffles and the second baffles are both circular rings, the outer sides of the first baffles are connected with the inner wall of the ABR anaerobic reactor, gaps are reserved between the inner sides of the first baffles and the central pipe, the outer sides of the second baffles are connected with the outer wall of the central pipe, and gaps are reserved between the outer sides of the second baffles and the inner wall of the ABR anaerobic reactor;
the first baffle plate and the second baffle plate divide the interior of the ABR anaerobic reactor into a plurality of compartments, and magnetic biological combined packing is arranged in the compartments;
a water outlet is arranged on a partition plate between the anoxic reactor and the biological contact oxidation tank; an aeration pipe and a water outlet are arranged in the biological contact oxidation tank; and biological combined fillers are arranged in the anoxic reactor and the biological contact oxidation tank.
Further, in the technical scheme, the spaces of the compartments are gradually reduced from the bottom of the ABR anaerobic reactor upwards.
Furthermore, in the above technical solution, the magnetic biological filler is formed by winding a biological combined filler around a metal coil to which a fine magnet is attached.
Further, in the above technical scheme, a reflecting plate is arranged at the bottom of the ABR anaerobic reactor; the top of the ABR anaerobic reactor is provided with an overflow weir.
Further, in the above technical scheme, an annular overflow trough is arranged at the upper end of the biological contact oxidation pond, and the water outlet is positioned on the annular overflow trough.
Further, in the above technical scheme, the aeration pipe is connected with an aeration fan through an air pipe; the device also comprises a nitrifying liquid reflux pump and a nitrifying liquid reflux pipe which are used for refluxing the nitrifying liquid.
Further, in the above technical solution, the first baffle and the second baffle are both provided with baffle plates for slowing down hydraulic vortex and promoting uniform rising of water flow.
Further, in the above technical solution, the filling ratio of the magnetic biological composite filler in the compartment is 30% -45%; the filling ratio of the biological combined filler in the anoxic reactor and the biological contact oxidation tank is 20-30% and 30-45% respectively.
The invention has the beneficial effects that:
(1) adding a magnetized biological filler to provide an anaerobic ammonium oxidation bacteria attachment carrier to control the growth and slow down the loss of sludge and control the average Hydraulic Retention Time (HRT) of an ABR anaerobic reactor to realize sewage ammoniation;
(2) the aim of autonomously controlling the flow direction of sewage and sludge is achieved by performing water quality balance, sludge mixing and adsorption through the regular sewage and downflow of the upflow ABR, and the defects of the traditional ABR are optimized;
(3) realizing the conversion of ammonia nitrogen into N in the short-cut denitrification process of the returned nitrified liquid by controlling the HRT of the anoxic reactor2；
(4) By controlling DO (dissolved oxygen) and HRT (dissolved oxygen) of the biological contact oxidation pond and adding biological filler, growth carriers are provided for nitrifying bacteria and phosphorus accumulating bacteria, and ammoniacal nitrogen is converted into nitrite and nitrate;
(5) the method is suitable for treating low-carbon-nitrogen-ratio urban sewage and livestock and poultry breeding wastewater, and has the advantages of stable effluent quality, energy conservation and consumption reduction.
Drawings
FIG. 1 is a schematic structural view of a sewage treatment plant for low carbon-nitrogen ratio in an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of the magnetic biological composite filler in the embodiment of the invention.
Detailed Description
For a better understanding of the present invention, the following examples and drawings further illustrate the invention, but do not limit the invention.
In the description of the present invention, it is to be understood that the terms "central," "horizontal," "bottom," "inner," "outer," "longitudinal," "top," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," and the like are used in the indicated orientations and positional relationships based on the orientation shown in the drawings, merely to facilitate the description of the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and therefore should not be considered limiting. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1-2, a sewage treatment device for low carbon-nitrogen ratio comprises an ABR anaerobic reactor 1, an anoxic reactor 2, a biological contact oxidation tank 3, an aeration pipe 4, an air pipe 5, an aeration fan 6, a water inlet pump 7, a digestive juice reflux pump 8 and a digestive juice reflux pipe 9, wherein the ABR anaerobic reactor 1, the anoxic reactor 2 and the biological contact oxidation tank 3 are all cylindrical structures and are coaxially arranged from inside to outside in sequence, and the heights of the three are reduced in sequence.
The inner cavity of the ABR anaerobic reactor 1 is provided with a central pipe 1.1, a plurality of first baffle plates 1.2, a plurality of second baffle plates 1.3 and a reflecting plate 1.4. The water inlet end of the central tube 1.1 is connected with a water inlet pump 7, and the water outlet end is close to a reflecting plate 1.4 at the bottom of the ABR anaerobic reactor 1. The first baffle plates 1.2 and the second baffle plates 1.3 are both circular and are sequentially staggered and horizontally arranged along the axial direction of the ABR anaerobic reactor 1, the outer sides of the first baffle plates 1.2 are connected with the inner wall of the ABR anaerobic reactor 1, gaps are reserved between the inner sides and the central pipe 1.1, the inner sides of the second baffle plates 1.3 are connected with the outer wall of the central pipe 1.1, gaps are reserved between the outer sides and the inner wall of the ABR anaerobic reactor 1, the interior of the ABR anaerobic reactor 1 is further divided into a plurality of compartments 1.5, the compartment space in the ABR anaerobic reactor 1 is gradually reduced from bottom to top by adjusting the distance between the first baffle plates 1.2 and the second baffle plates 1.3, and magnetic biological combined fillers 1.6 for enhancing the attachment and growth of microorganisms are arranged in each compartment 1.5. The upper end of the ABR anaerobic reactor 1 is provided with an overflow weir 1.7 which ensures uniform water outlet and controls sludge loss and water quality clarification.
In the ABR anaerobic reactor, sewage is pumped into the reactor through a water inlet pump and a central pipe, and the influence of the inflow water flow velocity, uniform water distribution and hydraulic cyclone in the device on the sewage mixing effect is reduced through a reflecting plate; the first baffle and the second baffle which are transversely arranged increase the hydraulic retention time in the reactor, and reduce short flow through baffling when sewage enters water at the periphery and enters water at the center; the space of the vertical compartments is gradually reduced, and the acidogenesis and methanogenesis attached to the magnetic biological combined packing are separated to achieve the effects of simulating a multiphase anaerobic bioreactor and enhancing the pollutant load reduction effect of the first vertical compartment; meanwhile, the upflow device also avoids the reduction of sludge treatment effect caused by the slowing of sludge stirring after the flow speed is slowed down.
The magnetic biological combined filler 1.6 not only comprises a biological combined filler 11, but also comprises an iron ring 1.6.1 which is wound around the biological combined filler 11 and is attached with a tiny magnet, wherein the biological combined filler 11 can be a traditional combined filler manufactured by UPVC; the filling ratio of the magnetic biological combined filler in each compartment is 30-45% so as to achieve the purpose of forming different biological phases in different height directions to purify sewage, and simultaneously, nano ferroferric oxide is added in the sludge culture and operation stage so as to promote the growth of microorganisms and fix the microorganisms on the filler to slow down the loss of the microorganisms.
The anoxic reactor 2 is located outside the ABR anaerobic reactor 1. The inside of the anoxic reactor 2 is provided with a specific surface area of 500-800m2/m3And has a density of 0.96-1.00g/cm3The filling ratio of the biological composite filler 11 in the anoxic reactor 2 is 20-30%, and the structure of the biological composite filler is as follows: the combined packing single piece is formed by hanging filamentous plastics around the hard ring packing material and then distributing the filamentous plastics on the plastic rope according to a certain interval; a water gap 12 is arranged on a partition plate between the anoxic reactor 2 and the biological contact oxidation tank 3, so that larger hydraulic retention time can be ensured. The anoxic reactor 2 converts the ammonia nitrogen and the nitrate nitrogen in the anhydrous water into N by short-range denitrification2。
The biological contact oxidation pond 3 is positioned outside the anoxic reactor 2. The same biological combined filler 11 is arranged in the biological contact oxidation tank 3, and the filling ratio of the biological combined filler 11 in the biological contact oxidation tank 3 is 30-45%; the bottom of the biological contact oxidation tank 3 is provided with an aeration pipe 4, the aeration pipe 4 is connected with an aeration fan 6 through an air pipe 5, and the aeration fan can be fixed on the top of the whole device. The biological contact oxidation pond 3 removes total phosphorus through phosphorus accumulating bacteria.
The upper end of the biological contact oxidation pond 3 is provided with an annular overflow trough 3.1, and the annular overflow trough 3.1 is provided with a water outlet 10. The nitrifying liquid reflux pump 8 can be fixed on the top of the device, one end of the nitrifying liquid reflux pipe 9 is communicated with the water inlet pipe through the nitrifying liquid reflux pump 8, and the other end of the nitrifying liquid reflux pipe is connected with the water outlet 10.
The device can enhance the inflow velocity of water by controlling the water inlet pump 7, control HRT, enhance the growth of anaerobic ammonifying bacteria, treat reaction substrates nitrite nitrogen and nitrate nitrogen in the return flow of nitrifying liquid by the anaerobic ammonifying bacteria and convert the nitrite nitrogen and the nitrate nitrogen into harmless N2And the denitrification effect after the return of the nitrifying liquid is enhanced.
The ABR anaerobic reactor can be favorable to sewage treatment in the acid production phase and the methane production phase when the inflow velocity of water is large, can mix the sewage with smaller upper load and the sewage with larger lower VFA after the sewage velocity is slowed down, the defect that the pollutant load at the rear end is small and the VFA is excessively accumulated at the front section caused by the general ABR plug flow type device is greatly relieved, the function adjustment of the plug flow type and complete mixing type device in time is formed, meanwhile, the sludge is lost through natural sedimentation through the velocity adjustment, and the mode of filler adsorption is greatly slowed down.
The working process of the device is as follows:
1) pumping water by a water inlet pump into the ABR anaerobic reactor, inoculating the combined filler with the hung anaerobic ammoniated biomembrane, preferably controlling the HRT of the ABR anaerobic reactor to be 2d at a preferred filling ratio of 40%. The flow rate is intermittently reduced through flow rate control to enable sewage to flow downwards and to homogenize the water quality and the sludge concentration.
2) Mixed liquor containing a small amount of microorganism sludge enters the ABR anaerobic reactor together with nitrifying liquid returned by the reflux pump from the ABR anaerobic reactor and then is left in the anoxic reactor, denitrifying bacteria on the biological filler utilize various organic low-quality substances as electron donors in the denitrification process, and NO is3 -Stepwise reduction of NO as an electron acceptor3 -To N2Preferably, the HRT of the anoxic reactor is controlled to be 3 h.
3) Effluent enters an outer ring biological contact oxidation tank reactor from the bottom in a overflowing manner, nitrite bacteria, nitrifying bacteria and phosphorus accumulating bacteria of biological fillers convert ammonia nitrogen and PHB or PHV into nitrite and nitrate in an aerobic environment, phosphate is stored in the form of high-energy substances ATP, DO of a biological contact oxidation zone is controlled to be more than 2mg/L, the reflux quantity of nitrifying liquid is controlled to be 300%, and preferably, the HRT of the aerobic reactor is controlled to be 2 hours. The effluent enters the overflow groove in a overflowing way and then overflows to discharge water.
The above is, of course, only a specific application example of the present invention, and the scope of the present invention is not limited in any way. In addition to the above embodiments, the present invention may have other embodiments, and any technical solutions formed by equivalent substitutions or equivalent transformations are within the scope of the present invention as claimed.
Claims (10)
1. A sewage treatment device for low carbon-nitrogen ratio comprises an ABR anaerobic reactor (1), an anoxic reactor (2), a biological contact oxidation tank (3) and a water inlet pump (7), and is characterized in that the ABR anaerobic reactor (1), the anoxic reactor (2) and the biological contact oxidation tank (3) are all cylindrical structures and are coaxially arranged from inside to outside in sequence;
a central pipe (1.1) for water inlet, a plurality of first baffle plates (1.2) and a plurality of second baffle plates (1.3) are arranged in the ABR anaerobic reactor (1), the first baffle plates (1.2) and the second baffle plates (1.3) are sequentially staggered and horizontally arranged along the axial direction of the ABR anaerobic reactor (1), the first baffle plates (1.2) and the second baffle plates (1.3) are both circular, the outer sides of the first baffle plates (1.2) are connected with the inner wall of the ABR anaerobic reactor (1), gaps are reserved between the inner sides of the first baffle plates and the central pipe (1.1), the inner sides of the second baffle plates (1.3) are connected with the outer wall of the central pipe (1.1), and gaps are reserved between the outer sides of the second baffle plates and the inner wall of the ABR anaerobic reactor (1);
the first baffle plate (1.2) and the second baffle plate (1.3) divide the interior of the ABR anaerobic reactor (1) into a plurality of compartments (1.5), and magnetic biological combined packing (1.6) is arranged in the compartments;
a water passing port (12) is arranged on a partition plate between the anoxic reactor (2) and the biological contact oxidation tank (3); an aeration pipe (4) and a water outlet (10) are arranged in the biological contact oxidation tank (3);
biological combined fillers (11) are arranged in the anoxic reactor (2) and the biological contact oxidation tank (3).
2. The apparatus for treating wastewater with low carbon-nitrogen ratio according to claim 1, wherein the spaces of the plurality of compartments (1.5) are gradually decreased from the bottom of the ABR anaerobic reactor (1) upwards.
3. The device for treating sewage with low carbon-nitrogen ratio according to claim 1, wherein the magnetic biological combined filler (1.6) is formed by winding a biological combined filler (11) with a metal coil attached with a fine magnet.
4. The sewage treatment plant for low carbon nitrogen ratio according to claim 1, wherein the bottom of said ABR anaerobic reactor (1) is provided with a baffle plate (1.4); the top (1) of the ABR anaerobic reactor is provided with an overflow weir (1.7).
5. The sewage treatment plant for low carbon nitrogen ratio according to claim 1, characterized in that the upper end of the biological contact oxidation tank (3) is provided with an annular overflow launder (3.1).
6. The sewage treatment plant for low carbon-nitrogen ratio according to claim 1, wherein the aeration pipe (4) is connected with an aeration fan (6) through an air pipe (5).
7. The apparatus for treating wastewater with low carbon-nitrogen ratio as claimed in claim 1, further comprising a nitrifying liquid reflux pump (8) and a nitrifying liquid reflux pipe (9) for refluxing nitrifying liquid.
8. The device for treating the sewage with the low carbon-nitrogen ratio as claimed in claim 1, wherein the first baffle (1.2) and the second baffle (1.3) are provided with baffles (1.8) for slowing down hydraulic vortex to promote uniform rising of water flow.
9. The plant for the treatment of sewage with low carbon-nitrogen ratio according to claim 1, characterized in that the filling ratio of said magnetic biological composite filler (1.6) in each compartment (1.5) is 30% -45%.
10. The apparatus for treating sewage with low carbon-nitrogen ratio according to claim 1, wherein the filling ratio of the biological combined filler (11) in the anoxic reactor (2) and the biological contact oxidation tank (3) is 20-30% and 30-45%, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910965995.8A CN110902823A (en) | 2019-10-12 | 2019-10-12 | Be used for low carbon nitrogen to compare sewage treatment plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910965995.8A CN110902823A (en) | 2019-10-12 | 2019-10-12 | Be used for low carbon nitrogen to compare sewage treatment plant |
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| Publication Number | Publication Date |
|---|---|
| CN110902823A true CN110902823A (en) | 2020-03-24 |
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| CN201910965995.8A Pending CN110902823A (en) | 2019-10-12 | 2019-10-12 | Be used for low carbon nitrogen to compare sewage treatment plant |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112537845A (en) * | 2020-12-02 | 2021-03-23 | 北京建筑大学 | Rural sewage anaerobic resource utilization system and method |
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| CN102838255A (en) * | 2012-08-23 | 2012-12-26 | 辽宁工程技术大学 | Cage-shaped filler type device for treating beer waste water in anaerobic-anoxic-aerobic mode and method for treating bear waste water by using device |
| CN206089193U (en) * | 2016-10-24 | 2017-04-12 | 山东中新环境工程有限公司 | Multistage anaerobic reaction device of upflow inner loop |
| CN207016650U (en) * | 2017-07-28 | 2018-02-16 | 西北农林科技大学 | A kind of countryside sewage treatment equipment |
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| KR20050028985A (en) * | 2003-09-19 | 2005-03-24 | 안대희 | A wastewater treatment apparatus combined a membrane soaked biological reactor and an anaerobic granule sludge packed reactor |
| CN102838255A (en) * | 2012-08-23 | 2012-12-26 | 辽宁工程技术大学 | Cage-shaped filler type device for treating beer waste water in anaerobic-anoxic-aerobic mode and method for treating bear waste water by using device |
| CN206089193U (en) * | 2016-10-24 | 2017-04-12 | 山东中新环境工程有限公司 | Multistage anaerobic reaction device of upflow inner loop |
| CN207016650U (en) * | 2017-07-28 | 2018-02-16 | 西北农林科技大学 | A kind of countryside sewage treatment equipment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112537845A (en) * | 2020-12-02 | 2021-03-23 | 北京建筑大学 | Rural sewage anaerobic resource utilization system and method |
| CN112537845B (en) * | 2020-12-02 | 2022-05-17 | 北京建筑大学 | A system and method for anaerobic resource utilization of rural sewage |
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