CN114133032A - 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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- CN114133032A CN114133032A CN202110175170.3A CN202110175170A CN114133032A CN 114133032 A CN114133032 A CN 114133032A CN 202110175170 A CN202110175170 A CN 202110175170A CN 114133032 A CN114133032 A CN 114133032A
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- 239000010865 sewage Substances 0.000 title claims abstract description 48
- 239000000945 filler Substances 0.000 claims abstract description 91
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 47
- 238000005276 aerator Methods 0.000 claims abstract description 9
- 238000012856 packing Methods 0.000 claims description 25
- 238000005273 aeration Methods 0.000 claims description 16
- 238000011010 flushing procedure Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 abstract description 42
- 230000008569 process Effects 0.000 abstract description 42
- 238000010992 reflux Methods 0.000 abstract description 7
- 239000005416 organic matter Substances 0.000 abstract description 5
- 238000005192 partition Methods 0.000 abstract description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 18
- 230000000694 effects Effects 0.000 description 10
- 229910052757 nitrogen Inorganic materials 0.000 description 9
- 241000894006 Bacteria Species 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 8
- 239000012528 membrane Substances 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 230000001546 nitrifying effect Effects 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 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
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 4
- 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
- 229910052698 phosphorus Inorganic materials 0.000 description 4
- 239000011574 phosphorus 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
- 210000005056 cell body Anatomy 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000009991 scouring Methods 0.000 description 3
- 239000010802 sludge Substances 0.000 description 3
- 238000006467 substitution reaction Methods 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
- 238000000429 assembly Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
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- 239000012530 fluid Substances 0.000 description 2
- 230000006872 improvement Effects 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
- 230000004060 metabolic process Effects 0.000 description 2
- 235000015097 nutrients Nutrition 0.000 description 2
- 238000006864 oxidative decomposition reaction Methods 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 206010021143 Hypoxia Diseases 0.000 description 1
- 241000108664 Nitrobacteria Species 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
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- 239000002131 composite material Substances 0.000 description 1
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- 238000005260 corrosion Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 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
- 238000006213 oxygenation reaction Methods 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
-
- 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
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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)
- Biological Treatment Of Waste Water (AREA)
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 scheme is as follows: the fixed bed reactor is provided with a water inlet and a water outlet, a plurality of filler components are fixedly arranged in the fixed bed reactor, and the filler components are immersed in sewage; the filler component comprises a plurality of biological fillers, the biological fillers are provided with channels, aerobic biofilms grow on the water inlet section on the inner wall of the channel, and anoxic biofilms grow on the 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; the bottom side of the filler component is provided with an aerator. The fixed bed reactor can realize the functions of aerobic organic matter removal, 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 cost and the operating cost of the device.
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 biomembrane process is a sewage biological treatment technology parallel to the activated sludge process, is a fixed membrane process 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 type biological filter), a biological rotating disc, a biological contact oxidation device, a biological fluidized bed and the like.
In the process application, the removal of organic matters mainly depends on the oxidative decomposition of microorganisms under aerobic conditions, and the treatment of ammonia nitrogen and total nitrogen is mainly completed by the cooperation of nitrifying bacteria under aerobic conditions and denitrifying bacteria under anoxic conditions. The traditional denitrification mechanism is considered as follows: denitrification generally comprises four processes of ammoniation, nitrification, denitrification and assimilation; firstly, heterotrophic bacteria convert organic nitrogen into ammonium nitrogen (ammoniation), then the ammonium nitrogen is oxidized into nitrite nitrogen by autotrophic nitrosobacteria, then the nitrite nitrogen is oxidized into nitrate nitrogen by autotrophic nitrobacteria (nitrification), and finally the heterotrophic denitrifying bacteria simultaneously reduce the nitrite nitrogen and the nitrate nitrogen into gaseous nitrogen (denitrification).
Because the ammoniation reaction is rapid and generally not considered, the assimilation and metabolism process of the organism can also remove a small part of nitrogen, which is a secondary process of denitrification, and biological denitrification mainly comprises two processes of nitrification and denitrification. Nitrifying bacteria are aerobic bacteria and need to be cultured under aerobic conditions, denitrifying bacteria need to be cultured under the condition of oxygen deficiency, therefore, in the traditional process, a plurality of cell bodies are generally required to be arranged or cell body partitions are required to control different dissolved oxygen concentrations so as to culture nonfunctional microbial floras, meanwhile, in order to effectively utilize a carbon source, a denitrifying tank consuming the carbon source is arranged in front in the AO process, sewage firstly passes through the denitrifying tank and then enters a nitrifying tank, and nitrifying liquid in the nitrifying tank flows back to the front-end denitrifying tank through a water pump to carry out denitrification to remove total nitrogen. Therefore, in order to achieve good organic matter removal and denitrification effects in sewage biochemical treatment, functional areas such as an aerobic area and an anoxic area need to be divided in the biological tank.
In the traditional biomembrane treatment process, a plurality of cell bodies are generally arranged or separated, and the environmental conditions such as dissolved oxygen in water are controlled, so that a biomembrane with a specific function is cultured to complete the process link; in the traditional process, the denitrification reflux process is usually completed by a reflux pump and other power devices, so that the energy consumption is high, and the equipment investment and the later maintenance cost are high.
Even in a partitioned process unit, packing control of the conventional process remains more problematic:
1. the filler in the tank body in the traditional process is difficult to ensure that sewage flows evenly without the assistance of a stirring device, and the treatment effect is influenced by the conditions of local short flow and the like; under the pushing of the stirrer, the filler in a flowing state has the problems that the filler is easy to accumulate at the corners of the tank body and cannot normally participate in the treatment link; the traditional fixed bed process usually adopts small blocks of carriers to fill as fillers, the sewage flow rate is slow, the biomass mass transfer efficiency is low, nonuniform flow velocity distribution possibly exists in the radial direction, and channeling and short flow are easy to generate; 2. the traditional fixed bed process adopts small blocks of carriers to fill as fillers, so that the resistance of a bed layer is high, and the blockage condition is easy to generate particularly; due to the lack of an effective demoulding mechanism, an aged biological membrane attached to 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 filler in a flowing state adopted in the traditional process has a loss risk, and if an effective interception net cannot be arranged, the filler is easy to lose along with the effluent and even block a pipeline or damage subsequent unit equipment.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: overcome prior art's not enough, provide a novel tunnel type fixed bed reactor for sewage treatment, through adopting tunnel type biofilm carrier, fixed bed reactor need not the subregion and can realize that good oxygen gets rid of the organic matter, nitrify effects such as denitrification denitrogenation, has improved treatment effeciency greatly, and need not internal reflux device, has reduced the 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, a plurality of filler components are fixedly arranged in the fixed bed reactor, and the filler components are immersed in sewage; the filler component comprises a plurality of biological fillers, the biological fillers are provided with channels, aerobic biofilms grow on the water inlet section on the inner wall of the channel, and anoxic biofilms grow on the 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; the bottom side of the filler component is provided with an aerator.
Preferably, an aeration flushing pipe is arranged below the filler component, and a hole is formed in the aeration flushing pipe or a plurality of nozzles are arranged on the aeration flushing pipe.
Preferably, a baffle is mounted on the top of the packing assembly.
Preferably, the baffle is hinged to the top of the packing assembly, and a fixed connecting piece is arranged 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 20 cm.
Preferably, the inner wall of the channel is provided with a groove or a protrusion.
Preferably, the channel is linear, polygonal or curvilinear in shape.
Preferably, several 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 biofilm process sewage treatment process is short, the biofilm process is applied to sewage treatment in a reactor form in 20-30 th century, but the application is less, and the biofilm process occupies a place in the sewage treatment field and gradually becomes a market mainstream process due to the improvement of material science until the later stage of the 20 th century. For example, the MBBR technology which is widely applied in China is the invention application in the 90 th of the 20 th century taught by Norwegian university of technology, is introduced into China in the beginning of the 21 st century, and is still in continuous filler improvement and process exploration in recent decades. The novel tunnel type fixed bed reactor relies on a filler carrier in a brand new form, solves the problem in the industry that organic matters are removed and simultaneously nitrogen and phosphorus are independently removed by a unique idea, and simultaneously meets the requirements of low process energy consumption, replacement-free filler and the like.
2. The fixed bed reactor can realize the functions of aerobic organic matter removal, 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 modularly standardize the filler assembly, has low installation difficulty, can be applied to the reconstruction of old sewage treatment devices, greatly reduces the reconstruction difficulty of the pool body, has low reconstruction cost, quick construction period and good operation effect.
4. The invention does not need a stirring device, can ensure that the sewage has no over-flow problems such as short flow, channeling and the like, has high biomass mass transfer efficiency, and has no loss risk because the filler component is fixedly installed.
5. The invention solves the problem that the filler is easy to block in the traditional fixed bed process by demoulding, the sewage channel is communicated up and down by adopting the tunnel type fixed bed biological filler, the removed biological membrane can be smoothly discharged from the channel, the aeration scouring pipe is combined, the blocking phenomenon is avoided, and the membrane can be effectively removed so as to avoid replacing the filler.
6. The invention can complete the water circulation of nitrification and denitrification by only utilizing the oxygenation and aeration of the aerator, does not need to increase power equipment for sludge backflow and nitrification liquid backflow, does not need a special underwater stirring device, reduces the equipment cost of related devices, saves the energy consumption and greatly reduces the operation and 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 pieces of the biological filler of the present invention connected together in parallel.
FIG. 4 is a top view of the bio-packing of the present invention having different channel shapes.
FIG. 5 is a top view of multiple pieces of bio-packing of the present invention having different channel shapes secured together.
FIG. 6 is a front view of multiple pieces of bio-packing of different shapes of the present invention secured together.
FIG. 7 is a flow chart of a wastewater treatment process in example 6.
FIG. 8 is a flow chart of a sewage treatment process of comparative example 1.
In the figure, 1-fixed bed reactor, 101-water inlet, 102-water outlet, 2-biological filler, 201-channel, 202-aerobic biological membrane, 203-anoxic biological membrane, 204-bulge, 3-aerator, 4-aeration flushing pipe, 401-nozzle, 5-baffle.
Detailed Description
Example 1
As shown in fig. 1 to 6, the present 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 assemblies are fixedly installed in the fixed bed reactor 1 by means of a bracket or the like, and the filler assemblies are immersed in sewage; the filler component 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 a facultative biological film 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 taken as main parts respectively; 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 ways such as welding, gluing or binding; the bottom side of the filler component is provided with an aerator 3.
The biological filler 2 can be horizontally or obliquely placed in the fixed bed reactor 1 according to the needs of the actual environment. The channel 201 may be formed in any suitable shape, such as a straight line, a broken line, or a curved line; the biological filler 2 can be made of polyolefin materials, polyamide materials or composite materials of the polyolefin materials and the polyamide materials, and the materials can also obtain better hydrophilicity and other properties through modification so as to meet the characteristics of difficult deformation, aging resistance, corrosion resistance, good hydrophilicity, easy film formation and the like in the product performance.
The working principle is as follows:
the biological filler 2 is provided with a channel 201 in a tunnel shape, sewage entering the fixed bed reactor 1 from the water inlet 101 flows into the channel 201 of the biological filler 2, the sewage containing nutrient substances and inoculated microorganisms flows on the surface of the filler, and after a certain time, the microorganisms are attached to the surface of the filler to proliferate and grow to form 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 in the process of decomposing organic matters of the biological film, so that an aerobic biological film 202 and an anoxic biological film 203 are sequentially presented in the water inlet section and the water outlet section of the biological filler 2 along with the water flow direction, and denitrifying bacteria and the like under an anoxic condition can be cultured besides the aerobic reaction for decomposing organic matters and the nitrification reaction of the traditional filler, so that the denitrification effect is achieved; the same biological filler 2 carrier can be provided with an aerobic biological film 202 and an anoxic biological film 203 with obvious partitions, attached microorganisms are graded along the process, 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 of the packing assembly (namely the water inlet end) flows to the bottom of the packing assembly through the nitrification reaction and the denitrification reaction in sequence. At this time, air is introduced into the aerator 3, and the effective density of the bottom area of the packing assembly is reduced by aeration and aeration, so that the local pressure is reduced, and the fluid pressure drives the fluid around the bottom to flow in, so that the local water depth is increased, which is similar to the principle of air stripping. The water level at the top of the aerator 3 is obviously higher than the water level at the periphery, and then the water flows to the periphery, so that the sewage subjected to nitrification and denitrification reactions flows to the bottom of the filler assembly and then flows back to the top of the filler assembly, then the sewage flows through the tunnel-shaped channel 201 of the biological filler 2 to form downward water flow, flows to the bottom of the filler assembly again, and is circularly and repeatedly subjected to nitrification and denitrification reactions.
Therefore, functionally, sewage enters the anoxic zone after being subjected to oxidative decomposition of organic matters and nitrification in the aerobic zone of the biological filler 2, total nitrogen is removed in the anoxic zone through denitrification, and due to the flowing of water flow, upper nitrification liquid can completely enter the lower anoxic zone for denitrification 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 a tank body partition region and an 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 filler assembly, and a hole is formed in the aeration flushing pipe 4 or a plurality of nozzles 401 are arranged on the aeration flushing pipe. When the aged biomembrane attached to the inner wall of the biological filler 2 can not be removed by normal water flow scouring, the aeration scouring pipe 4 below the filler component is used for carrying out bottom intermittent aeration, so that bubbles go upwards to generate shearing force to assist in demoulding, and because of the tunnel type through structure which is vertically communicated with the biological filler 2, the removed biomembrane can be smoothly discharged from the channel 201, thereby avoiding the occurrence of blockage, and ensuring the later-stage efficient operation.
Example 3
On the basis of embodiment 2, a baffle 5 is installed at the top of the packing assembly, the baffle 5 is hinged to the top of the packing assembly, a fixed connecting piece is arranged between the baffle 5 and the packing assembly, and 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, wherein the fixed connecting piece can be a connecting plate connected to the baffle 5 and the packing assembly through bolts.
Simultaneously, can articulate the bottom, middle part or the upper portion of baffle 5 at the top of packing subassembly as required, so not only can adjust the inside angle that the air stripping water got into the packing subassembly through adjusting 5 inclination angles of baffle, can also adjust the inside volume that the air stripping water got into the packing subassembly through the length that adjusting 5 exposed packing subassembly tops to the control is introduced the inside inflow and the velocity of flow of packing subassembly by the air stripping effect, thereby controls parameter such as filler intake load. Besides, the flow rate of the sewage can be controlled by adjusting the aeration amount of the aerator 3.
Example 4
On the basis of example 1, the fixed bed reactor 1 is provided with a plurality of water inlets 101, i.e. the water inlets are distributed in multiple points. A plurality of water inlet points are arranged in the fixed bed reactor 1, and raw water is distributed and fed in a multi-point mode.
The carbon source is always a control factor of the traditional biological nitrogen and phosphorus removal process, is a nutrient element necessary for the growth of microorganisms and is mainly consumed by phosphorus release, denitrification and heterotrophic bacteria metabolism. When the carbon source content of the inlet water is low, the nitrogen and phosphorus removal effect of the outlet water is 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 assembly can be influenced due to the lack of a carbon source. In the embodiment, the carbon source in the inlet water can be reasonably and effectively distributed and utilized through multi-point water inlet, and a higher denitrification effect is realized.
Example 5
On the basis of embodiment 1, grooves or protrusions 204 are arranged on the inner wall of the channel 201 to increase the inner surface area of the biological filler 2, and the grooves and protrusions 204 also can play a role in increasing the supporting strength of the biological filler 2 and preventing deformation.
Example 6
As shown in fig. 7, in this embodiment, the fixed bed reactor 1 is applied to a typical sewage treatment process, the biochemical treatment unit can remove organic matters, ammonia nitrogen and total nitrogen only by using one tank body (the fixed bed reactor 1), and the treatment process 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 and nitrification reactions separately.
Example 6 has the following advantages over comparative example 1:
the process unit aspect: example 6 with the fixed bed reactor 1 of the present invention, it is not necessary to separately install an anoxic tank and an aerobic tank, and the biochemical treatment unit saves about 25% of the tank construction cost;
the land occupation aspect is as follows: example 6 due to the pool body combination, the occupied area of the biochemical treatment unit can be reduced by about 30%;
in the aspect of equipment configuration: in the embodiment 6, a stirring device in the anoxic tank is not required to be arranged, a special nitrifying liquid reflux pump is not required, and the installation and purchase cost of the corresponding device can be saved;
in the aspect of energy consumption: example 6 no reflux is required, the operating 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 also be applied to various sewage treatment processes such as a sludge membrane coupling biological treatment process, a multistage AO reforming process, and the like.
Although the present invention has been described in detail by referring to the drawings in connection with the preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the present invention, and these modifications or substitutions are within the scope of the present invention/any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. Novel tunnel type fixed bed reactor is used in sewage treatment, fixed bed reactor (1) is provided with water inlet (101) and delivery port (102), its characterized in that: a plurality of packing components are fixedly arranged in the fixed bed reactor (1) and are immersed in sewage; the filler component comprises a plurality of biological fillers (2), the biological fillers (2) are provided with channels (201), aerobic biofilms (202) grow on the water inlet sections on the inner walls of the channels (201), and anoxic biofilms (203) grow on the water outlet sections; 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; the bottom side of the filler component is provided with an aerator (3).
2. The novel tunnel-type fixed-bed reactor for sewage treatment as set forth in claim 1, characterized in that: an aeration flushing pipe (4) is arranged below the filler component, and a hole or a plurality of nozzles (401) are arranged on the aeration flushing pipe (4).
3. The novel tunnel-type fixed-bed reactor for sewage treatment as set forth in claim 1, characterized in that: and a baffle (5) is arranged at the top of the packing component.
4. A novel tunnel-type fixed-bed reactor for sewage treatment as set forth in claim 3, characterized in that: the baffle (5) is hinged to the top of the packing component, and a fixed connecting piece is arranged between the baffle (5) and the packing component.
5. The novel tunnel-type fixed-bed reactor for sewage treatment as set forth in claim 1, characterized in that: the fixed bed reactor (1) is provided with a plurality of water inlets (101).
6. A novel tunnel-type fixed-bed reactor for sewage treatment as claimed in any one of claims 1 to 5, characterized in that: the length of the channel (201) is at least 20 cm.
7. A novel tunnel-type fixed-bed reactor for sewage treatment as claimed in any one of claims 1 to 5, characterized in that: grooves or protrusions (204) are arranged on the inner wall of the channel (201).
8. A novel tunnel-type fixed-bed reactor for sewage treatment as claimed in any one of claims 1 to 5, characterized in that: the channel (201) is in a straight line, a broken line or a curved shape.
9. A novel tunnel-type fixed-bed reactor for sewage treatment as claimed in any one of claims 1 to 5, characterized in that: the biological fillers (2) of the filler component are arranged in parallel.
Priority Applications (1)
| 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 |
Applications Claiming Priority (1)
| 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114133032A true CN114133032A (en) | 2022-03-04 |
| CN114133032B CN114133032B (en) | 2024-03-01 |
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| CN115520958A (en) * | 2022-10-18 | 2022-12-27 | 贵州通用水务技术发展有限公司 | Water treatment filtering device and application thereof |
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| 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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| CN2725288Y (en) * | 2004-09-20 | 2005-09-14 | 中国石油天然气股份有限公司 | Anaerobic and aerobic integrated fixed bed biofilm 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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| CN115520958A (en) * | 2022-10-18 | 2022-12-27 | 贵州通用水务技术发展有限公司 | Water treatment filtering device and application thereof |
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