CN114133032B - Novel tunnel type fixed bed reactor for sewage treatment - Google Patents
Novel tunnel type fixed bed reactor for sewage treatment Download PDFInfo
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- CN114133032B CN114133032B CN202110175170.3A CN202110175170A CN114133032B CN 114133032 B CN114133032 B CN 114133032B CN 202110175170 A CN202110175170 A CN 202110175170A CN 114133032 B CN114133032 B CN 114133032B
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- sewage treatment
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- 239000010865 sewage Substances 0.000 title claims abstract description 47
- 239000000945 filler Substances 0.000 claims abstract description 79
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 51
- 238000005276 aerator Methods 0.000 claims abstract description 9
- 230000000712 assembly Effects 0.000 claims abstract description 4
- 238000000429 assembly Methods 0.000 claims abstract description 4
- 238000012856 packing Methods 0.000 claims description 30
- 238000005273 aeration Methods 0.000 claims description 14
- 238000011010 flushing procedure Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 abstract description 39
- 230000008569 process Effects 0.000 abstract description 36
- 238000010992 reflux Methods 0.000 abstract description 9
- 238000011049 filling Methods 0.000 abstract description 8
- 238000005192 partition Methods 0.000 abstract description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 12
- 230000000694 effects Effects 0.000 description 11
- 239000000463 material Substances 0.000 description 11
- 241000894006 Bacteria Species 0.000 description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 244000005700 microbiome Species 0.000 description 5
- 230000001546 nitrifying effect Effects 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000003756 stirring Methods 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 3
- 238000010276 construction Methods 0.000 description 3
- 239000005416 organic matter Substances 0.000 description 3
- 239000010802 sludge Substances 0.000 description 3
- 239000002028 Biomass Substances 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 2
- 230000001651 autotrophic effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 210000005056 cell body Anatomy 0.000 description 2
- 230000005465 channeling Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 230000004060 metabolic process Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 235000015097 nutrients Nutrition 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 238000009991 scouring Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 241001148470 aerobic bacillus Species 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000004176 ammonification Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009739 binding Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- AHEWZZJEDQVLOP-UHFFFAOYSA-N monobromobimane Chemical compound BrCC1=C(C)C(=O)N2N1C(C)=C(C)C2=O AHEWZZJEDQVLOP-UHFFFAOYSA-N 0.000 description 1
- 125000001477 organic nitrogen group Chemical group 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000006864 oxidative decomposition reaction Methods 0.000 description 1
- 238000006213 oxygenation reaction Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
-
- 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
Abstract
The invention discloses a novel tunnel type fixed bed reactor for sewage treatment, and belongs to the technical field of sewage treatment. The technical proposal is as follows: the fixed bed reactor is provided with a water inlet and a water outlet, a plurality of filler assemblies are fixedly arranged in the fixed bed reactor, and the filler assemblies are immersed in sewage; the filler assembly comprises a plurality of biological fillers, the biological fillers are provided with channels, an aerobic biomembrane grows on a water inlet section on the inner wall of each channel, and an anoxic biomembrane grows on a water outlet section; the filler component is formed by connecting a plurality of biological fillers in parallel, or is formed by connecting a plurality of biological fillers in series to form a biological filler group and then connecting a plurality of biological filler groups in parallel; an aerator is arranged on the side surface of the bottom of the filling component. The fixed bed reactor can realize the functions of aerobic removal of organic matters, nitrification, denitrification and the like without partition, greatly improves the treatment efficiency, does not need an internal reflux device, reduces the combination of process units, and reduces the device cost and the operation cost.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a novel tunnel type fixed bed reactor for sewage treatment.
Background
The biological membrane method is a sewage biological treatment technology which is parallel to the activated sludge method, is a fixed membrane method and is mainly used for removing soluble and colloidal organic pollutants in wastewater. The treatment technology comprises a biological filter (a common biological filter, a high-load biological filter and a tower biological filter), a biological rotating disc, biological contact oxidation equipment, a biological fluidized bed and the like.
In the process application, the removal of organic matters mainly depends on the oxidative decomposition effect of microorganisms under the aerobic condition, and the treatment of ammonia nitrogen and total nitrogen is mainly completed by cooperation of nitrifying bacteria under the aerobic condition and denitrifying bacteria under the anoxic condition. The conventional denitrification mechanism is considered as follows: denitrification generally includes four processes, ammoniation, nitrification, denitrification and assimilation; firstly, heterotrophic bacteria convert organic nitrogen into ammonium nitrogen (ammonification), then the ammonium nitrogen is oxidized into nitrite nitrogen by autotrophic nitrifying bacteria, the nitrite nitrogen is oxidized into nitrate nitrogen by autotrophic nitrifying bacteria (nitrification), and finally, heterotrophic denitrifying bacteria simultaneously reduce the nitrite nitrogen and the nitrate nitrogen into gaseous nitrogen (denitrification).
Because the ammoniation reaction is fast, the assimilation metabolic process of organisms is generally not considered, and can remove a small part of nitrogen, which is a secondary process of denitrification, so that the biological denitrification is mainly two processes of nitrification and denitrification. Nitrifying bacteria are aerobic bacteria, which are cultured under aerobic conditions, and denitrifying bacteria are cultured under anoxic regulation, so that the traditional process usually needs to set a plurality of tanks or perform tank partition to control different dissolved oxygen concentrations so as to culture out microbial flora incapable of functioning, meanwhile, in order to effectively utilize a carbon source, a denitrification tank consuming the carbon source is arranged in front of an AO process, sewage firstly passes through the denitrification tank and then enters the nitrification tank, and nitrified liquid in the nitrification tank flows back to a front-end denitrification tank through a water pump to perform denitrification to remove total nitrogen. Therefore, the biochemical treatment of sewage needs to achieve good organic matter removal and denitrification effects, and functional areas such as an aerobic area, an anoxic area and the like are required to be divided in a biological pond.
The traditional biological film treatment process generally needs to be provided with a plurality of tanks or separate the tanks, and controls the environmental conditions such as dissolved oxygen and the like in the water body, so that the biological film with specific functions is cultured to complete the process link; the denitrification reflux process in the traditional process is usually completed through power devices such as a reflux pump, and the like, so that the energy consumption is high, and the equipment investment and the later maintenance cost are high.
Even in a zoned process unit, there are still more problems with filler control in conventional processes:
1. the filler in the tank body of the traditional process is difficult to ensure even overflow of sewage without the assistance of a stirring device, and local short flow and other conditions are easy to occur to influence the treatment effect; the flowing state filler is easy to accumulate at the corners of the tank body and cannot normally participate in a treatment link under the pushing of the stirrer; the fixed bed technology in the traditional form generally adopts small carrier filling as filler, the sewage flow speed is slower, the biomass mass transfer efficiency is low, the radial direction can have nonuniform flow speed distribution, and channeling and short flow are easy to generate; 2. the fixed bed technology in the traditional form adopts small carrier filling as filler, so that the bed resistance is high, and the blockage condition is particularly easy to generate; because of the lack of an effective stripping mechanism, the aged biomembrane attached by the filler in the traditional process is difficult to fall off, and the filler needs to be replaced after a period of time to ensure the treatment efficiency, so that the construction and maintenance cost is increased; 3. the flowing state filler adopted in the traditional process has the risk of losing, and if an effective interception net cannot be arranged, the filler is easy to lose along with the effluent, even the pipeline is blocked or the subsequent unit equipment is damaged.
Disclosure of Invention
The invention aims to solve the technical problems that: the utility model provides a overcome prior art's not enough, provides a sewage treatment is with novel tunnel type fixed bed reactor, through adopting tunnel type biofilm carrier, fixed bed reactor need not the subregion and can realize that good oxygen gets rid of effects such as organic matter, nitrify denitrification denitrogenation, has improved treatment effeciency greatly, and need not internal reflux device, has reduced technology unit combination, has reduced device cost and working costs.
The technical scheme of the invention is as follows:
the novel tunnel type fixed bed reactor for sewage treatment is provided with a water inlet and a water outlet, and a plurality of filler assemblies are fixedly arranged in the fixed bed reactor and immersed in sewage; the filler assembly comprises a plurality of biological fillers, the biological fillers are provided with channels, an aerobic biomembrane grows on a water inlet section on the inner wall of each channel, and an anoxic biomembrane grows on a water outlet section; the filler component is formed by connecting a plurality of biological fillers in parallel, or is formed by connecting a plurality of biological fillers in series to form a biological filler group and then connecting a plurality of biological filler groups in parallel; an aerator is arranged on the side surface of the bottom of the filling component.
Preferably, an aeration flushing pipe is arranged below the filler assembly, and the aeration flushing pipe is provided with holes or a plurality of nozzles.
Preferably, a baffle is mounted on top of the packing assembly.
Preferably, the baffle is hinged at the top of the packing assembly and a fixed connection is provided between the baffle and the packing assembly.
Preferably, the fixed bed reactor is provided with a plurality of water inlets.
Preferably, the length of the channel is at least 20cm.
Preferably, grooves or protrusions are formed on the inner wall of the channel.
Preferably, the channel is in the shape of a straight line, a broken line or a curve.
Preferably, a plurality of biological fillers of the filler assembly are arranged in parallel.
Compared with the prior art, the invention has the following beneficial effects:
1. the application time of the biomembrane sewage treatment process is shorter, the biomembrane process is applied to sewage treatment in a reactor form in the 20 th century of 20-30 th, but the application is still less, and the appearance of novel filler does not enable the biomembrane process to occupy one place in the sewage treatment field until the later 20 th century due to the progress of material science, and becomes a main stream process of the market gradually. For example, the MBBR process, which is widely used in China, is taught by the university of Norway and is used in the invention of the 90 th generation of the 20 th century, and is introduced in China at the beginning of the 21 st century, but is still in continuous filler improvement and process exploration in the last decade. The novel tunnel type fixed bed reactor of the invention relies on a completely new form of filler carrier, solves the problem existing in the industry with a unique thought, namely, independently completes denitrification and dephosphorization while removing organic matters, and simultaneously meets the requirements of low energy consumption, filler replacement free and the like of the process.
2. The fixed bed reactor can realize the functions of aerobic removal of organic matters, nitrification, denitrification and the like without partition, greatly improves the treatment efficiency, reduces the combination of process units, and reduces the cost of a sewage treatment device.
3. The fixed bed reactor can carry out modular standardization on the filler component, has low installation difficulty, can be applied to the reconstruction of an old sewage treatment device, has greatly reduced Chi Tigai difficulty, and has low reconstruction cost, quick construction period and good operation effect.
4. According to the invention, a stirring device is not needed, so that the sewage can be ensured to have no overflow problems such as short flow, channeling and the like, the biomass mass transfer efficiency is high, and the filler component is fixedly installed without loss risk.
5. The invention solves the problem that the filling material is easy to be blocked in the traditional fixed bed process, and by adopting the tunnel type fixed bed biological filling material, the sewage channel is communicated up and down, the removed biological film can be smoothly discharged from the channel, and the aeration flushing pipe is combined, so that the blocking phenomenon is avoided, and the filling material can be effectively removed, thereby avoiding the replacement of the filling material.
6. The invention can complete the water circulation of nitrification and denitrification by only using the oxygenation aeration of the aerator, does not need to increase power equipment to carry out sludge reflux and nitrified liquid reflux, does not need a special underwater stirring device, reduces the equipment cost of related devices, saves energy consumption and greatly reduces the operation treatment cost.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a top view of the present invention.
FIG. 3 is a cross-sectional view of a plurality of biological fillers of the present invention in parallel.
Fig. 4 is a top view of the bio-filler of the present invention having a different channel shape.
FIG. 5 is a top view of multiple biological fillers of the present invention having different channel shapes secured together.
FIG. 6 is a front view of the present invention with multiple pieces of biological filler of different shapes secured together.
FIG. 7 is a flow chart of the sewage treatment process of example 6.
FIG. 8 is a flow chart of a sewage treatment process of comparative example 1.
In the figure, a 1-fixed bed reactor, a 101-water inlet, a 102-water outlet, a 2-biological filler, a 201-channel, a 202-aerobic biological film, a 203-anoxic biological film, a 204-bulge, a 3-aerator, a 4-aeration flushing pipe, a 401-nozzle and a 5-baffle are arranged.
Detailed Description
Example 1
As shown in fig. 1-6, the embodiment provides a novel tunnel type fixed bed reactor for sewage treatment, the fixed bed reactor 1 is provided with a water inlet 101 and a water outlet 102, a plurality of filler components are fixedly arranged in the fixed bed reactor 1 in a bracket and other modes, and the filler components are immersed in sewage; the filler assembly comprises a plurality of biological fillers 2 which are arranged in parallel, the biological fillers 2 are provided with a channel 201 with the length of at least 20cm, an aerobic biological film 202 grows on a water inlet section on the inner wall of the channel 201, an anoxic biological film 203 grows on a water outlet section, and other biological films such as facultative biological films and the like can also grow on the water inlet section and the water outlet section, but the aerobic biological film 202 and the anoxic biological film 203 are respectively taken as the main materials; the filler component is formed by connecting a plurality of biological fillers 2 in parallel, or is formed by connecting a plurality of biological fillers 2 in series to form a biological filler 2 group and then connecting a plurality of biological fillers 2 in parallel, and the biological fillers 2 can be fixed in various modes such as welding, gluing or binding; an aerator 3 is arranged on the side surface of the bottom of the packing assembly.
The biofilm carrier 2 may be horizontally or obliquely placed in the fixed bed reactor 1 according to the actual circumstances. The channel 201 may be formed in any suitable shape, such as a straight line, a broken line, or a curved shape; the biological filler 2 can be made of polyolefin materials, polyamide materials or composite materials of polyolefin materials and polyamide materials, and the materials can be modified to obtain better hydrophilicity and other properties so as to meet the characteristics of difficult deformation, aging resistance, corrosion resistance, good hydrophilicity, easy film formation and the like on the product performance.
Working principle:
the biological packing 2 has a tunnel-shaped passage 201, and sewage entering the fixed bed reactor 1 from the water inlet 101 flows into the passage 201 of the biological packing 2, and sewage containing nutrients and inoculated microorganisms flows on the surface of the packing, and after a certain period of time, the microorganisms adhere to the surface of the packing to proliferate and grow, forming a thin biological film. When sewage containing dissolved oxygen flows in from the water inlet end of the biological filler 2, the dissolved oxygen in the sewage is gradually consumed due to the decomposition process of organic matters of the biological film, so that the aerobic biological film 202 and the anoxic biological film 203 are sequentially presented in the water inlet section and the water outlet section of the biological filler 2 along the water flow direction, and besides the organic matters are decomposed by the aerobic reaction and the nitrification reaction of the traditional filler, denitrifying bacteria and the like under the anaerobic condition can be cultivated, so that the sewage has denitrification effect; the same carrier of the biological filler 2 can be provided with an aerobic biological film 202 and an anoxic biological film 203 which are obviously partitioned, the attached microorganisms are graded along the way, the characteristic population is rich, the treatment efficiency of pollutants is higher, and the process flow and the equipment structure can be greatly simplified.
When the device is in operation, sewage entering the channel 201 from the top (i.e. the water inlet end) of the packing assembly flows to the bottom of the packing assembly through nitrification and denitrification in sequence. At this time, air is introduced into the aerator 3, and the effective density of the bottom area of the filler assembly is reduced due to aeration, so that the local pressure is reduced, the fluid pressure drives the fluid around the bottom to flow in, and the local water depth is increased, similar to the principle of air stripping. The water surface at the top of the aerator 3 is obviously higher than the peripheral water surface, and then the water flows to the periphery, so that the sewage subjected to nitrification and denitrification flows back to the top of the packing assembly after flowing to the bottom of the packing assembly, then the downward water flow is formed through the tunnel-shaped channel 201 of the biological packing 2, flows to the bottom of the packing assembly again, and the nitrification and denitrification are performed repeatedly.
Therefore, the sewage enters the anoxic zone after the organic matters are oxidized and decomposed and nitrified in the aerobic zone of the biological filler 2, the total nitrogen is removed by denitrification in the anoxic zone, and the upper nitrified liquid can completely enter the anoxic zone at the lower part for denitrification due to the flow of water flow and then returns to the upper aerobic zone again, so that the organic matter removal and denitrification effects are enhanced repeatedly and repeatedly, and the denitrification efficiency is greatly improved. The treatment mode does not need cell body partition and internal reflux device, and reduces the operation treatment cost.
Example 2
On the basis of the embodiment 1, an aeration flushing pipe 4 is arranged below the packing assembly, and holes are formed in the aeration flushing pipe 4 or a plurality of nozzles 401 are arranged on the aeration flushing pipe. When the aged biological film attached to the inner wall of the biological filler 2 cannot be removed through normal water flow scouring, the aeration scouring pipe 4 below the filler component is used for bottom intermittent aeration, and bubbles ascend to generate shearing force to assist in stripping, and due to the tunnel-type penetrating structure of the biological filler 2, the removed biological film can be smoothly discharged from the channel 201, so that the blocking phenomenon is avoided, and the later-stage efficient operation is ensured.
Example 3
On the basis of embodiment 2, the baffle 5 is installed at the top of the packing assembly, the baffle 5 is hinged at the top of the packing assembly, a fixed connecting piece is arranged between the baffle 5 and the packing assembly, the baffle 5 is fixed at the top of the packing assembly by the fixed connecting piece after the inclination angle of the baffle 5 on the packing assembly is adjusted, and the fixed connecting piece can be a connecting plate connected on the baffle 5 and the packing assembly through bolts or the like.
Meanwhile, the bottom, the middle or the upper part of the baffle plate 5 can be hinged to the top of the packing assembly according to the requirement, so that not only can the angle of the air-stripping water entering the inside of the packing assembly be adjusted by adjusting the inclination angle of the baffle plate 5, but also the amount of the air-stripping water entering the inside of the packing assembly can be adjusted by adjusting the length of the baffle plate 5 exposing the top of the packing assembly, thereby controlling the water inflow and the flow rate introduced into the inside of the packing assembly by the air-stripping effect, and further controlling the parameters such as the water inflow load of the packing. Besides, the aeration rate of the aerator 3 can be adjusted to control the flow rate of sewage.
Example 4
On the basis of example 1, the fixed bed reactor 1 is provided with a plurality of water inlets 101, i.e. a multipoint distribution of the inlet water. A plurality of water inlet points are arranged in the fixed bed reactor 1, and raw water is subjected to multi-point distribution water inlet.
The carbon source is always a control factor of the traditional biological denitrification and dephosphorization process, is a necessary nutrient element for the growth of microorganisms and is mainly consumed for phosphorus release, denitrification and heterotrophic bacteria metabolism. When the carbon source content of the inlet water is low, the denitrification and dephosphorization effects of the outlet water are poor. In the fixed bed reactor 1, sewage can flow in from one end and flow out from the other end, the sewage concentration is gradually reduced, and the denitrification effect of the rear end filler component can be influenced by the lack of a carbon source. According to the embodiment, through multi-point water inflow, carbon sources in the water inflow can be reasonably and effectively distributed and utilized, and a high denitrification effect is achieved.
Example 5
On the basis of embodiment 1, grooves or protrusions 204 are formed on the inner wall of the channel 201 to increase the inner surface area of the bio-filler 2, and the grooves and protrusions 204 can also function to increase the supporting strength of the bio-filler 2 to prevent deformation.
Example 6
In this embodiment, as shown in fig. 7, the fixed bed reactor 1 is applied to a typical sewage treatment process, and the biochemical treatment unit can remove organic matters, ammonia nitrogen and total nitrogen by only adopting one tank body (the fixed bed reactor 1), so that the treatment process flow is simple and efficient.
Comparative example 1
As shown in FIG. 8, in comparison with example 6, comparative example 1 was provided with an anoxic tank and an aerobic tank, respectively, to perform denitrification reaction and nitrification reaction separately.
Example 6 has the following advantages over comparative example 1:
the process unit aspect is as follows: example 6 with the fixed bed reactor 1 of the present invention, there is no need to separately set an anoxic tank and an aerobic tank, and the biochemical treatment unit saves about 25% of the construction cost of the tank body;
the occupied area is as follows: example 6 the biochemical treatment unit area can be reduced by about 30% due to the combined cell body;
device configuration aspects: in the embodiment 6, a stirring device in an anoxic tank is not required, a special nitrifying liquid reflux pump is not required, and the installation purchase cost of the corresponding device can be saved;
the energy consumption aspect is as follows: in the embodiment 6, no reflux is needed, the operation cost is reduced, and the energy consumption of the biochemical treatment unit is reduced by about 15% -25%.
In addition, the fixed bed reactor 1 of the present invention can be applied to various sewage treatment processes such as a sludge film coupled biological treatment process, a multistage AO-transformation process, and the like.
Although the present invention has been described in detail by way of preferred embodiments with reference to the accompanying drawings, the present invention is not limited thereto. Various equivalent modifications and substitutions may be made in the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the present invention, and it is intended that all such modifications and substitutions be within the scope of the present invention/be within the scope of the present invention as defined by the appended claims. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. The novel tunnel type fixed bed reactor for sewage treatment is characterized in that the fixed bed reactor (1) is provided with a water inlet (101) and a water outlet (102): a plurality of filler assemblies are fixedly arranged in the fixed bed reactor (1), and are immersed in sewage; the filler assembly comprises a plurality of biological fillers (2), the biological fillers (2) are provided with channels (201), an aerobic biological film (202) grows on a water inlet section on the inner wall of each channel (201), and an anoxic biological film (203) grows on a water outlet section; the filler component is formed by connecting a plurality of biological fillers (2) in parallel, or is formed by connecting a plurality of biological fillers (2) in series to form a biological filler (2) group and then connecting a plurality of biological fillers (2) in parallel; an aerator (3) is arranged on the side surface of the bottom of the filler component;
an aeration flushing pipe (4) is arranged below the filler assembly, and holes or a plurality of nozzles (401) are formed in the aeration flushing pipe (4);
the fixed bed reactor (1) is provided with a plurality of water inlets (101).
2. The novel tunnel-type fixed bed reactor for sewage treatment according to claim 1, wherein: a baffle (5) is arranged at the top of the packing assembly.
3. The novel tunnel-type fixed bed reactor for sewage treatment according to claim 2, wherein: the baffle (5) is hinged to the top of the packing assembly, and a fixed connecting piece is arranged between the baffle (5) and the packing assembly.
4. A novel tunnel-type fixed bed reactor for sewage treatment according to any one of claims 1 to 3, wherein: the length of the channel (201) is at least 20cm.
5. A novel tunnel-type fixed bed reactor for sewage treatment according to any one of claims 1 to 3, wherein: the inner wall of the channel (201) is provided with a groove or a bulge (204).
6. A novel tunnel-type fixed bed reactor for sewage treatment according to any one of claims 1 to 3, wherein: the channel (201) is in the shape of a straight line, a broken line or a curve.
7. A novel tunnel-type fixed bed reactor for sewage treatment according to any one of claims 1 to 3, wherein: the biological fillers (2) of the filler assembly are arranged in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110175170.3A CN114133032B (en) | 2021-02-07 | 2021-02-07 | Novel tunnel type fixed bed reactor for sewage treatment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110175170.3A CN114133032B (en) | 2021-02-07 | 2021-02-07 | Novel tunnel type fixed bed reactor for sewage treatment |
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| CN114133032A CN114133032A (en) | 2022-03-04 |
| CN114133032B true CN114133032B (en) | 2024-03-01 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2725288Y (en) * | 2004-09-20 | 2005-09-14 | 中国石油天然气股份有限公司 | Anaerobic aerobic integrated fixed bed biological membrane reactor |
| CN102167440A (en) * | 2011-03-24 | 2011-08-31 | 河海大学 | Hollow short-tube film packing |
| CN107601671A (en) * | 2017-11-10 | 2018-01-19 | 东北大学 | The Waste Water Treatment and method of non-aeration deflector type synchronous nitration and denitrification |
| CN108946945A (en) * | 2018-09-25 | 2018-12-07 | 徐州工程学院 | A kind of biologic packing material fixed HMBR technique aeration tank |
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2021
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2725288Y (en) * | 2004-09-20 | 2005-09-14 | 中国石油天然气股份有限公司 | Anaerobic aerobic integrated fixed bed biological membrane reactor |
| CN102167440A (en) * | 2011-03-24 | 2011-08-31 | 河海大学 | Hollow short-tube film packing |
| CN107601671A (en) * | 2017-11-10 | 2018-01-19 | 东北大学 | The Waste Water Treatment and method of non-aeration deflector type synchronous nitration and denitrification |
| CN108946945A (en) * | 2018-09-25 | 2018-12-07 | 徐州工程学院 | A kind of biologic packing material fixed HMBR technique aeration tank |
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