CN111533256A - Continuous flow carbon source-free biological denitrification device - Google Patents
Continuous flow carbon source-free biological denitrification device Download PDFInfo
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- CN111533256A CN111533256A CN202010451456.5A CN202010451456A CN111533256A CN 111533256 A CN111533256 A CN 111533256A CN 202010451456 A CN202010451456 A CN 202010451456A CN 111533256 A CN111533256 A CN 111533256A
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 108
- 239000004576 sand Substances 0.000 claims abstract description 94
- 238000006243 chemical reaction Methods 0.000 claims abstract description 45
- 238000005406 washing Methods 0.000 claims abstract description 13
- 239000002893 slag Substances 0.000 claims description 47
- 238000004873 anchoring Methods 0.000 claims description 5
- 239000012530 fluid Substances 0.000 claims description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims 10
- 229910052757 nitrogen Inorganic materials 0.000 claims 5
- 239000000945 filler Substances 0.000 abstract description 22
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract description 9
- 229910052717 sulfur Inorganic materials 0.000 abstract description 9
- 239000011593 sulfur Substances 0.000 abstract description 9
- 238000011001 backwashing Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 5
- 239000010865 sewage Substances 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 72
- 238000005191 phase separation Methods 0.000 description 6
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 4
- 235000017491 Bambusa tulda Nutrition 0.000 description 4
- 241001330002 Bambuseae Species 0.000 description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 4
- 239000011425 bamboo Substances 0.000 description 4
- 238000007599 discharging Methods 0.000 description 4
- 244000005700 microbiome Species 0.000 description 4
- 230000001651 autotrophic effect Effects 0.000 description 3
- 239000011499 joint compound Substances 0.000 description 3
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 235000017281 sodium acetate Nutrition 0.000 description 2
- 239000001632 sodium acetate Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- 241000192700 Cyanobacteria Species 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010841 municipal wastewater Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
- C02F3/2866—Particular arrangements for anaerobic reactors
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
The invention relates to the technical field of environmental protection sewage treatment, and discloses a continuous flow carbon-source-free biological denitrification device which comprises an uniform water distribution system, an internal circulation sand washing system, a deslagging system and a water outlet system, wherein the uniform water distribution system comprises a water inlet pipe and a water distributor, the water inlet pipe penetrates through a reaction cylinder from outside to inside and is connected with the water distributor, the bottom of the reaction cylinder is conical and is communicated with a power water pipe of the internal circulation sand washing system, and the top of the reaction cylinder is fixedly connected with a fixed beam. The continuous flow carbon source-free biological denitrification device improves the uniformity of water distribution, prevents the blockage of a water distribution system by high-speed water flow at a water distribution port, and improves the volume utilization rate of the reactor; the method has the advantages that no additional carbon source is needed, the risk that COD in the effluent exceeds the standard is avoided, and the problems that the COD of the denitrification biological filter taking the carbon source as an electron donor exceeds the standard, the filler of the denitrification biological filter taking the sulfur source as the electron donor is easy to run off and the backwashing of the fixed bed denitrification biological filter needs to be stopped at present are solved.
Description
Technical Field
The invention relates to the technical field of environmental protection sewage treatment, in particular to a continuous flow carbon-source-free biological denitrification device.
Background
With the deterioration of water environment quality, the pollutant emission standard executed in China is more and more strict. The first grade A discharge standard of the national discharge standard of pollutants for municipal wastewater treatment plants (GB18918-2002) requires that the TN content of tail water discharged by the wastewater treatment plants is not higher than 15mg/L, and has a larger difference with the international level. After the blue-green algae event in the Taihu lake in 2007, some environment-sensitive areas even require the execution of the type IV water discharge standard in the environmental quality Standard for surface Water (GB3838-2002) (except IV, TN is not higher than 10 mg/L); after ten items of water are issued, local discharge standards are successively issued from place to place, the Kunming area is strictest, and the highest discharge standard requires that the TN content is not higher than 5 mg/L. The reduction of TN content is an inevitable trend in the field of sewage treatment.
However, various existing technologies for reducing the TN content encounter some technical problems in the popularization process, the conventional activated sludge method realizes biological denitrification by adding an external carbon source (such as sodium acetate) into a treatment system, but the conventional activated sludge method finds that the tolerance of microorganisms to small molecular carbon sources such as sodium acetate is very strong during operation, and the added carbon source tends to increase, for example, a certain tin-free sewage treatment plant needs to add the carbon source in the coldest three months (11 months, 12 months and the next 1 month) in the first year, and needs to add the carbon source in the second year after four months and five years from the end of autumn to the first half year of summer; the denitrification biological filter taking a carbon source as an electron donor has high control precision, can cause excessive carbon source addition by carelessness, faces the risk of excessive COD (chemical oxygen demand), and needs to stop processing for about half an hour during backwashing. The fixed bed denitrification biological filter taking sulfur as an electron donor can pulverize granular sulfur after running for a period of time, and can cause a large amount of loss of the powdered sulfur during backwashing, thereby increasing the running cost. Therefore, the deep denitrification process which has no COD exceeding risk, low raw material flow loss and low operation cost has very wide market prospect.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a continuous flow carbon-source-free biological denitrification device which has the advantages of no risk of COD exceeding standard, strong self-cleaning capability of a system, online water-free backwashing and no loss of filler, and solves the problems that the COD of the denitrification biological filter taking a carbon source electron donor exceeds standard, the filler of the denitrification biological filter taking a sulfur source as an electron donor is easy to loss and the backwashing of the fixed bed denitrification biological filter needs to be stopped at present.
(II) technical scheme
In order to realize the purposes of no COD exceeding risk, strong self-cleaning capability of the system, on-line water-free backwashing and no loss of filler, the invention provides the following technical scheme: the utility model provides a continuous flow carbonless source biological denitrification device, includes water distribution uniformity system, inner loop sand washing system, slag discharging system and water outlet system, water distribution uniformity system contains inlet tube and check valve water-locator, the inlet tube passes the reaction section of thick bamboo, links to each other with the check valve water-locator, the bottom of reaction section of thick bamboo is the toper, and the intercommunication has inner loop sand washing system power water pipe, the left side intercommunication of reaction section of thick bamboo has clear water district intake pipe, reaction section of thick bamboo top fixedly connected with fixed beam, the fixed beam is used for fixed centrifugal air current power sand washer, centrifugal air current power sand washer's inside sets up sand washer sediment weir, centrifugal air current power sand washer's outside is provided with clear water district sediment weir.
The device is characterized in that a pipeline support used for fixing a slag discharge header pipe is arranged outside the reaction cylinder, the slag discharge header pipe is respectively communicated with a centrifugal airflow power sand washer slag discharge pipe and a clear water area slag discharge pipe, the starting end of the centrifugal airflow power sand washer slag discharge pipe sequentially penetrates through the centrifugal airflow power sand washer and the reaction cylinder from top to bottom in an inclined mode through a 45-degree elbow, the terminal end of the centrifugal airflow power sand washer is connected with the slag discharge header pipe through a 45-degree inclined tee joint, the starting end of the clear water area slag discharge pipe is connected with a clear water area slag discharge weir through a 45-degree elbow, the rear end of the reaction cylinder is connected with the slag discharge header pipe through a 45-degree inclined tee joint, the upper portion of the centrifugal airflow power sand washer is connected with a fixed beam, the lower portion of the centrifugal airflow power sand washer is connected with a sand lifting pipe which is communicated up and down through a sand washer fixed support, a large sand guide cone is connected below a check valve water distributor, the bottom end of the large sand guide cone is provided with, and a water collecting channel is arranged on the outer side of the top end of the reaction cylinder.
Preferably, the water inlet pipe penetrates through the reaction cylinder from outside to inside and is communicated with the one-way valve water distributor.
Preferably, the power water pipe of the internal circulation sand washing system passes through the reaction cylinder below the conical hopper at the bottom of the reaction cylinder and extends into the middle of the small sand guide cone, and a spiral fluid director is arranged inside the sand lifting pipe.
Preferably, the clean water area air inlet pipe is tangentially communicated with the reaction cylinder from the lower part of the split-phase flow guide ring.
Preferably, the sand washer power air source air inlet pipe penetrates through the reaction cylinder from outside to inside and is communicated with the centrifugal airflow power sand washer tangentially, and the setting height of the sand washer power air source air inlet pipe is flush with the top of the sand lifting pipe.
Preferably, the top of the split-phase flow guide ring is provided with a water collection weir, an anchoring screw is arranged inside the water collection weir, and a scum baffle is arranged on the side surface of the anchoring screw.
Compared with the prior art, the invention provides a continuous flow carbon-source-free biological denitrification device, which has the following beneficial effects:
1. according to the continuous flow carbon-source-free biological denitrification device, the check valve water distributor is arranged, a water distribution port of a check valve water distribution system adopts a silica gel duckbill valve, the orifice jet speed is not less than 2m/s, the installation density is 25-36 per square meter, local 'holes' are formed around the orifice, and the continuous flow carbon-source-free biological denitrification device cannot flow backwards when water stops running, so that the problem that water distribution holes are blocked possibly formed in the traditional water supplementing mode is avoided.
2. According to the continuous flow carbon-source-free biological denitrification device, biological sulfur filler can be used as an electron donor, and an external carbon source is not needed, so that the risk that COD (chemical oxygen demand) of effluent exceeds the standard is avoided.
3. The continuous flow carbon-source-free biological denitrification device adopts an internal circulation mode to realize the fluidization state and the stripping of the filler, and realizes the three-phase separation of mud, water and the filler by flushing the filler with high-speed and high-pressure water flow and air flow, thereby avoiding the loss of the filler.
4. According to the continuous flow carbon-source-free biological denitrification device, a circle of scum baffle is arranged on the periphery of a water collection weir, the distance between the bottom of the floating slag baffle and a split-phase guide ring is about 10cm, the split-phase guide ring and the scum baffle are utilized to separate scum and clear water, the running period of a reactor is prolonged, the risk that SS (suspended solid) of effluent exceeds the standard is avoided, and no subsequent treatment facility is required to be added.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is an enlarged view of a portion of A of FIG. 1;
FIG. 3 is an enlarged view of a portion B of FIG. 1 according to the present invention.
Wherein: 1. a water inlet pipe; 2. a check valve water distributor; 3. a water outlet pipe; 4. a slag discharge pipe in the clear water area; 5. a centrifugal airflow power sand washer slag discharge pipe; 6. a main slag discharge pipe; 7. a clear water area air inlet pipe; 8. a sand washer power gas source gas inlet pipe; 9. a power water pipe of the internal circulation sand washing system; 10. an emptying pipe; 11. a slag discharging weir in the clear water area; 12. a sand washer slag discharge weir; 13. a scum baffle; 14. a water collection weir; 15. an anchoring screw; 16. a split-phase guide ring; 17. a large sand guide cone; 18. a small sand guide cone; 19. a sand extracting pipe; 20. centrifugal air flow power sand washer; 21. a fixed beam; 22. a water collecting channel; 23. a reaction cylinder; 24. a pipe support; 25. a sand washer fixing bracket; 26. the reactor is fixed with a support.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the invention provides a continuous flow carbon-source-free biological denitrification device, which comprises a uniform water distribution system, an internal circulation sand washing system, a deslagging system and a water outlet system, wherein a water inlet pipe 1 penetrates through a reaction cylinder 23 from outside to inside, the reaction cylinder 23 is communicated with a one-way valve water distributor 2, a water distribution port of the one-way valve water distributor 2 adopts a silica gel duckbill valve, the orifice jet velocity is not less than 2m/s, the installation density is 25-36 per square meter, a local 'cavity' is formed around an orifice, and the water cannot flow backwards when the water stops running, so that the problem of water distribution hole blockage possibly formed in the traditional water supplementing mode is avoided, the bottom of the reaction cylinder 23 is communicated with an internal circulation sand washing system power water pipe 9, the left side of the reaction cylinder 23 is communicated with a clear water area air inlet pipe 7, the clear water area 7 is communicated with the reaction cylinder 23 tangentially from the lower part of a flow guide ring 16, and the internal circulation sand washing system power water pipe 9 penetrates through the reaction cylinder 23 and the middle of the sand guide cone 18, the inside of the sand lifting pipe 19 is provided with a spiral flow guide device, the top of the reaction cylinder 23 is fixedly connected with a fixed beam 21, the fixed beam 21 is used for fixing a middle centrifugal airflow power sand washer 20, the tangential communication of the centrifugal airflow power sand washer 20 is provided with a sand washer power air source air inlet pipe 8, the sand washer power air source air inlet pipe 8 penetrates through the reaction cylinder 23 from outside to inside and is tangentially communicated with the centrifugal airflow power sand washer 20, the setting height of the sand washer power air source air inlet pipe 8 is flush with the top of the sand lifting pipe 19, the inner side of the centrifugal airflow power sand washer 20 is provided with a sand washer slag discharging weir 12, the outer side of the centrifugal airflow power sand washer 20 is provided with a clear water area slag discharging weir 11, the centrifugal separation and air flotation principles are utilized to realize the three-phase separation of mud, water and filler, the clear water area high-speed airflow enters tangentially from the bottom of the phase separation flow guide ring 16, aged biomembrane, and when the slag rises to the surface, the slag weir 11 and the slag pipe 4 in the clean water area are discharged, and the scum in the centrifugal airflow power sand washer 20 is discharged through the slag weir 12 and the slag pipe 5 of the centrifugal airflow power sand washer.
The outside of the reaction cylinder 23 is provided with a pipeline bracket 24 for fixing a slag discharge header pipe 6, the slag discharge header pipe 6 is respectively communicated with a centrifugal airflow power sand washer slag discharge pipe 5 and a clear water area slag discharge pipe 4, the starting end of the centrifugal airflow power sand washer slag discharge pipe 5 is connected with a sand washer slag discharge weir 12 through a 45-degree elbow, the centrifugal airflow power sand washer 20 and the reaction cylinder 23 are sequentially and obliquely penetrated from top to bottom, the terminal end is connected with the slag discharge header pipe 6 through a 45-degree inclined tee joint, the starting end of the clear water area slag discharge pipe 4 is connected with a clear water area slag discharge weir 11 through a 45-degree elbow, the rear part of the reaction cylinder 23 is connected with the slag discharge header pipe 6 through a 45-degree inclined tee joint, the upper part of the centrifugal airflow power sand washer 20 is connected with a fixed beam 21, the lower part is connected with a sand lifting pipe 19 which is communicated up and down through a sand washer fixed bracket 25, the inside of the sand lifting pipe 19 is provided with a spiral flow guider, the spiral flow guider is connected, the bottom is provided with little sand cone 18, the side surface intercommunication of little sand cone 18 has blow-down pipe 10, the inner wall of reaction tube 23 sets up phase separation water conservancy diversion ring 16 in the below of dross baffle 13 and water collection weir 14, the top of phase separation water conservancy diversion ring 16 is provided with water collection weir 14, the inside of water collection weir 14 is provided with anchor screw 15, anchor screw 15's side surface is provided with dross baffle 13, the top outside of reaction tube 23 is equipped with water collecting channel 22, the left side fixed connection reactor fixing support 26 of reaction tube 23, water collecting channel 22's left side intercommunication has outlet pipe 3.
When in use, the biological sulfur filler can be an electron donor in the reactor, no additional carbon source is needed, the risk that the COD of the effluent exceeds the standard is avoided, water in the power water pipe 9 of the internal circulation sand washing system forms vacuum in the small sand guide cone 18 at the flow rate of more than 20m/s, the biological sulfur filler is driven to enter the centrifugal airflow power sand washer 20 through the sand lifting pipe 19 by utilizing the negative pressure suction principle, the biological filler is rubbed and collided with the spiral fluid director for multiple times in the sand lifting pipe 19, the surface aged biological membrane falls off, high-speed air provided by the power air source air inlet pipe 8 of the sand washer is adhered to the surface of the biological membrane in the centrifugal airflow power sand washer 20, scum is formed and is discharged through the sand washer slag discharge weir 12 and the centrifugal airflow power sand washer slag discharge pipe 5, the clean biological filler returns to the packing layer through a gap between the centrifugal airflow power sand washer 20 and the sand lifting pipe 19, the filler is washed by high-speed and high-pressure airflow to realize three-phase separation of mud, water and the filler, so that the filler loss is avoided, the biological sulfur filler is adopted, the filler type can be selected according to the specific water quality, if TN is only required to be removed, standard autotrophic microorganism denitrification type filler can be selected, if the simultaneous denitrification and dephosphorization is required, the dephosphorization reinforced autotrophic microorganism denitrification type filler can be adopted, and if the alkalinity in the inlet water is insufficient, the alkalinity reinforced autotrophic microorganism denitrification type filler can be selected.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a continuous flow does not have carbon source biological denitrification device, includes water distribution uniformity system, inner loop sand washing system, slag discharge system and goes out the water system, its characterized in that: the uniform water distribution system comprises a water inlet pipe (1) and a one-way valve water distributor (2), the water inlet pipe (1) penetrates through a reaction cylinder (23) and is connected with the one-way valve water distributor (2), the bottom of the reaction cylinder (23) is conical and is communicated with an internal circulation sand washing system power water pipe (9), the left side of the reaction cylinder (23) is communicated with a clean water area air inlet pipe (7), the top of the reaction cylinder (23) is fixedly connected with a fixed beam (21), the fixed beam (21) is used for fixing a centrifugal airflow power sand washer (20), a sand washer slag discharge weir (12) is arranged inside the centrifugal airflow power sand washer (20), and a clean water area slag discharge weir (11) is arranged outside the centrifugal airflow power sand washer (20);
the device is characterized in that a pipeline support (24) used for fixing a slag discharge main pipe (6) is arranged outside the reaction cylinder (23), the slag discharge main pipe (6) is communicated with a centrifugal airflow power sand washer slag discharge pipe (5) and a clear water area slag discharge pipe (4) respectively, the starting end of the centrifugal airflow power sand washer slag discharge pipe (5) penetrates through a 45-degree elbow from top to bottom in sequence and obliquely penetrates through the centrifugal airflow power sand washer (20) and the reaction cylinder (23), the terminal is connected with the slag discharge main pipe (6) through a 45-degree oblique tee joint, the starting end of the clear water area slag discharge pipe (4) is connected with a clear water area slag discharge weir (11) through a 45-degree elbow, the reaction cylinder (23) is connected with the slag discharge main pipe (6) through a 45-degree oblique tee joint, the upper part of the centrifugal airflow power sand washer (20) is connected with a fixed beam (21), and the lower part of the centrifugal airflow power sand washer fixed support (25) is connected with a sand lifting pipe (19) which is communicated, the water distributor is characterized in that a large sand guide cone (17) is connected below the one-way valve water distributor (2), a small sand guide cone (18) is arranged at the bottom end of the large sand guide cone (17), a split-phase flow guide ring (16) is arranged on the inner wall of the reaction cylinder (23) below the scum baffle (13) and the water collection weir (14), and a water collection channel (22) is arranged on the outer side of the top end of the reaction cylinder (23).
2. The continuous flow carbon-source-free biological nitrogen removal device of claim 1, wherein: the water inlet pipe (1) penetrates through the reaction cylinder (23) from outside to inside and is communicated with the one-way valve water distributor (2).
3. The continuous flow carbon-source-free biological nitrogen removal device of claim 1, wherein: the power water pipe (9) of the internal circulation sand washing system passes through the reaction cylinder (23) and extends into the middle of the small sand guide cone (18) below the cone hopper at the bottom of the reaction cylinder (23), and a spiral fluid director is arranged inside the sand lifting pipe (19).
4. The continuous flow carbon-source-free biological nitrogen removal device of claim 1, wherein: the clear water area air inlet pipe (7) is tangentially communicated with the reaction cylinder (23) from the lower part of the split-phase flow guide ring (16).
5. The continuous flow carbon-source-free biological nitrogen removal device of claim 1, wherein: the sand washer power air source air inlet pipe (8) penetrates through the reaction cylinder (23) from outside to inside and is communicated with the centrifugal airflow power sand washer (20) in a tangential mode, and the setting height of the sand washer power air source air inlet pipe (8) is flush with the top of the sand lifting pipe (19).
6. The continuous flow carbon-source-free biological nitrogen removal device of claim 1, wherein: the top of the split-phase flow guide ring (16) is provided with a water collection weir (14), an anchoring screw (15) is arranged inside the water collection weir (14), and the side surface of the anchoring screw (15) is provided with a scum baffle (13).
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| CN202010451456.5A CN111533256A (en) | 2020-05-25 | 2020-05-25 | Continuous flow carbon source-free biological denitrification device |
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| CN202010451456.5A CN111533256A (en) | 2020-05-25 | 2020-05-25 | Continuous flow carbon source-free biological denitrification device |
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| CN109368769A (en) * | 2018-12-20 | 2019-02-22 | 北京梅凯尼克环保科技有限公司 | A kind of autotrophic type deep-bed filter using novel compound filling |
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2020
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| CN201506728U (en) * | 2009-09-15 | 2010-06-16 | 帕克环保技术(上海)有限公司 | Air-lift biological denitrification continuous sand filter |
| CN102424477A (en) * | 2011-10-27 | 2012-04-25 | 徐洪斌 | Counterflow moving bed biological advanced denitrification processing apparatus |
| CN204723826U (en) * | 2015-04-01 | 2015-10-28 | 天津中油科远石油工程有限责任公司 | The continuous anti-filter treating apparatus of oilfield sewage quartz sand |
| CN106517505A (en) * | 2016-12-12 | 2017-03-22 | 江苏中宜金大环保技术发展有限公司 | Denitrification filter tank and operation method thereof |
| CN109368769A (en) * | 2018-12-20 | 2019-02-22 | 北京梅凯尼克环保科技有限公司 | A kind of autotrophic type deep-bed filter using novel compound filling |
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