CN116986776B - High-efficiency anaerobic denitrification reactor for removing high-concentration nitrate nitrogen - Google Patents
High-efficiency anaerobic denitrification reactor for removing high-concentration nitrate nitrogen Download PDFInfo
- Publication number
- CN116986776B CN116986776B CN202311252875.6A CN202311252875A CN116986776B CN 116986776 B CN116986776 B CN 116986776B CN 202311252875 A CN202311252875 A CN 202311252875A CN 116986776 B CN116986776 B CN 116986776B
- Authority
- CN
- China
- Prior art keywords
- sand
- water
- tank
- water inlet
- nitrogen removal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 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 title claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 170
- 239000004576 sand Substances 0.000 claims abstract description 151
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 111
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 54
- 238000001914 filtration Methods 0.000 claims abstract description 24
- 241000894006 Bacteria Species 0.000 claims abstract description 8
- 239000007789 gas Substances 0.000 claims abstract description 4
- 238000009825 accumulation Methods 0.000 claims description 10
- 238000005485 electric heating Methods 0.000 claims description 6
- 238000003795 desorption Methods 0.000 claims 1
- -1 nitrate ions Chemical class 0.000 abstract description 20
- 229910002651 NO3 Inorganic materials 0.000 abstract description 13
- 239000002245 particle Substances 0.000 abstract description 10
- 239000008213 purified water Substances 0.000 abstract description 6
- 239000003344 environmental pollutant Substances 0.000 abstract description 5
- 231100000719 pollutant Toxicity 0.000 abstract description 5
- 229910001873 dinitrogen Inorganic materials 0.000 abstract 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 14
- 238000000034 method Methods 0.000 description 13
- 239000013049 sediment Substances 0.000 description 13
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 12
- 239000010865 sewage Substances 0.000 description 9
- 239000001569 carbon dioxide Substances 0.000 description 7
- 229910002092 carbon dioxide Inorganic materials 0.000 description 7
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 6
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 4
- 238000005192 partition Methods 0.000 description 4
- 244000035744 Hura crepitans Species 0.000 description 3
- 238000004062 sedimentation Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 2
- 241001148471 unidentified anaerobic bacterium Species 0.000 description 2
- 229920002472 Starch Polymers 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000002351 wastewater Substances 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
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- 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
-
- 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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
- C02F2101/166—Nitrites
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/02—Fluid flow conditions
- C02F2301/026—Spiral, helicoidal, radial
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/10—Temperature conditions for biological treatment
Abstract
The invention discloses a high-efficiency anaerobic denitrification reactor for removing high-concentration nitrate nitrogen, which comprises a coarse filtration tank, a sand settling tank and a nitrogen removal tank, wherein a water inlet I is formed above the coarse filtration tank, a water outlet is formed on one side of the coarse filtration tank and is connected with a water inlet II above the sand settling tank through a water pipe and a first water pump, a water outlet II is formed above the sand settling tank, a water inlet III is formed on one side of the nitrogen removal tank, a second water pump is arranged outside the nitrogen removal tank and below the water inlet III, a water inlet end of the second water pump is connected with the water outlet II through the water pipe, a water outlet III and a gas outlet are formed above the nitrogen removal tank, larger pollutants are filtered through the coarse filtration tank, sand grains with smaller particle sizes are deposited and discharged through the sand settling tank, and finally, denitrifying bacteria in the nitrogen removal tank perform denitrification on nitrate ions and nitrite ions in water to form nitrogen gas to discharge water, so that purified water can be obtained.
Description
Technical Field
The invention relates to the technical field of denitrification of sewage, in particular to a high-efficiency anaerobic denitrification reactor for removing high-concentration nitrate nitrogen.
Background
In the sewage treatment process of a sewage treatment plant, sewage is required to be converted into nitrogen through denitrification of anaerobic bacteria and discharged to obtain purified water, the principle is that under the anoxic condition, the anaerobic bacteria convert nitrate and nitrite into nitrogen under the supply of a carbon source, if denitrification effect is not ideal, the quality of effluent water is seriously affected, and the economical and effective denitrification of high-concentration nitrate wastewater is an important work in sewage treatment, and meanwhile, the removal of sand in the water is extremely important, so that the high-efficiency anaerobic denitrification reactor for removing high-concentration nitrate nitrogen is provided.
Disclosure of Invention
The invention aims to provide an efficient anaerobic denitrification reactor for removing high-concentration nitrate nitrogen so as to solve the technical problems in the background.
The aim of the invention can be achieved by the following technical scheme:
the high-efficiency anaerobic denitrification reactor for removing high-concentration nitrate nitrogen comprises a coarse filtration tank, a sand settling tank and a nitrogen removal tank, wherein a water inlet I is formed in the upper portion of the coarse filtration tank, a water outlet is formed in one side of the coarse filtration tank and is connected with a water inlet II above the sand settling tank through a water pipe and a first water pump, a water outlet II is formed in the upper portion of the sand settling tank, a water inlet III is formed in one side of the nitrogen removal tank, a second water pump is arranged outside the nitrogen removal tank and below the water inlet III, a water inlet end of the second water pump is connected with the water outlet II through a water pipe, a water outlet end of the second water pump is connected with the water inlet III through a water pipe, and a water outlet III and a gas outlet are formed in the upper portion of the nitrogen removal tank;
the nitrogen removal tank is characterized in that an inner tank is arranged in the nitrogen removal tank, a plurality of water passing holes are formed in the side face of the bottom of the inner tank, a plurality of anaerobic partition boards are arranged in the inner tank and above the water passing holes at equal intervals, a plurality of air passing holes are formed in the anaerobic partition boards, and denitrifying bacteria are arranged on the anaerobic partition boards.
More preferably, the outside of inner tank is provided with the constant temperature box just the inside heating wire that is provided with of constant temperature box, the projection of no oxygen baffle along the horizontal direction falls into completely in the projection of constant temperature box.
More preferably, one side of the sand settling tank is provided with a sand accumulation box and the side of the sand accumulation box is provided with a sand feeding pipe, a sand outlet is formed in the lower portion of one end of the sand feeding pipe, one end, close to the sand outlet, of the sand feeding pipe is provided with a sand feeding motor, the inside of the sand feeding pipe is rotated and provided with a flat shaft, one end of the flat shaft is connected with the output end of the sand feeding motor, the other end of the flat shaft is hinged with an inclined shaft, and sand feeding leaves are arranged on the flat shaft and the inclined shaft.
More preferably, the horizontal height of the sand feeding motor is higher than the horizontal height of the water inlet II.
More preferably, the bottom of the sand settling tank is rotatably provided with a sand dredging spiral She Ju, one end of the sand dredging spiral blade is connected with the output end of a motor arranged outside, and the other end of the sand dredging spiral blade is positioned in the sand accumulation box.
More preferably, the inside of desilting jar is provided with the water conservancy diversion ring just the lower extreme of water conservancy diversion ring is annular even fixed arrangement has a plurality of guide vanes, a plurality of guide vanes with the tangent line of water conservancy diversion ring junction with guide vane all is an contained angle, so that adjacent two be formed with a clearance that is used for holding rivers and passes through between the guide vane, the top of desilting jar inside just is located the axis of water conservancy diversion ring and rotates and be provided with the pivot, be provided with the spiral leaf in the pivot, the lower extreme of pivot is provided with the sand and holds in the palm, be a plurality of water conservancy diversion sand openings of falling of annular array on the sand support, be provided with the sand slope that falls on the sand support and be located between the sand opening of falling of water conservancy diversion.
More preferably, a sand settling motor is arranged above the sand settling tank, the output end of the sand settling motor is connected with a rotating shaft, and spiral blades on the rotating shaft are in inverted conical shapes.
More preferably, a filter cylinder is arranged in the coarse filter tank and is used for filtering water flow flowing into the water inlet I.
The invention has the beneficial effects that:
in the invention, an inner tank is arranged in the nitrogen removal tank, a plurality of water passing holes are formed in the side surface of the bottom of the nitrogen removal tank, a plurality of anaerobic clapboards are arranged in the inner tank and above the water passing holes at equal intervals, a plurality of air passing holes are formed in each anaerobic baffle, the air passing holes on two adjacent anaerobic baffles are arranged oppositely, the central lines of the air passing holes on the two adjacent anaerobic baffles are not overlapped, a constant temperature box is arranged at the outer side of the inner tank, and an electric heating wire is arranged in the inner tank, and the proper pH value of denitrification is 8-8.6, so that the temperature of the water in the nitrogen removal tank is also required to be ensured to be proper temperature, the water temperature in the nitrogen removal tank can be controlled to be 20-35 ℃ through the electric heating wire, the maximum efficiency of denitrification can be ensured, the height of the constant temperature box is the same as that of the anaerobic baffle plate, after the water after sand settling is conveyed into the nitrogen removal tank from the sand settling tank, the water flows into the inner tank from the outer side of the inner tank through the water passing holes, then denitrification reaction is carried out through denitrifying bacteria on the anaerobic baffle plate in the inner tank, nitrate ions are firstly denitrified to become nitrite ions, then nitrite ions are denitrified to become nitrogen, and finally the nitrogen is discharged from the air outlet, so that the problem of more nitrogen in sewage is rapidly and effectively solved;
according to the invention, the guide ring is arranged in the sediment tank, the lower end of the sediment tank is provided with the guide blades in an annular array, the middle part of the guide ring is rotatably provided with the rotating shaft, the rotating shaft is provided with the spiral blades, the lower end of the rotating shaft is provided with the sand support, the sand support is provided with the plurality of guide sand falling openings in an annular array, the sand support is provided with the sand falling slopes between the guide sand falling openings, the sediment motor is arranged above the sediment tank, the output end of the sediment motor is connected with the rotating shaft, the spiral blades on the rotating shaft are in an inverted cone shape, after water after coarse filtration enters the sediment tank from the water inlet II, the internal water flow is enabled to rotate under the action of the spiral blades to form vortex, the water flow forms a split vortex through the guide blades while the water flow is in vortex rotation, then the sand falling slopes on the sand support face the role of guiding each vortex, on the aspect of reducing the resistance of the water flow in the rotation process due to the fact that the sand support rotates from the higher side of the sediment Sha Po in the rotation direction to the lower side, on the other hand, the water flow in the sediment tank is completely passes through the bottom of the vortex flow after the water flow is completely and the sediment particles completely pass through the sediment tank after the water flow in the mode of the vortex flow, and the sediment flow completely flows down along with the vortex flow in the sediment process.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic cross-sectional view of a nitrogen removal tank in accordance with the present invention;
FIG. 3 is a schematic cross-sectional view of a sand setting tank according to the present invention;
FIG. 4 is a schematic top view of a sand tray according to the present invention;
FIG. 5 is a schematic view of a connection structure between a guide vane and a guide ring according to the present invention;
FIG. 6 is a schematic cross-sectional view of the connection structure of the sand feeding pipe and the sand accumulation box in the present invention;
FIG. 7 is a schematic cross-sectional view of a coarse filtration tank according to the present invention.
In the figure: 1. a coarse filtration tank; 10. a first water inlet; 11. a first water outlet; 12. a filter cartridge; 13. a first water pump; 2. a sand settling tank; 20. a second water inlet; 21. a second water outlet; 22. a guide ring; 221. a guide vane; 23. a sand settling motor; 231. a rotating shaft; 232. spiral leaves; 24. sha Tuo; 240. a diversion sand falling port; 241. sha Po; 25. sand-repellent spiral leaves; 250. a sand accumulation box; 3. a sand feeding pipe; 31. an inclined shaft; 32. a flat shaft; 33. delivering sand leaves; 34. a sand feeding motor; 35. a sand outlet; 4. a nitrogen removal tank; 400. a second water pump; 401. a water inlet III; 402. an air outlet; 403. a water outlet III; 41. an inner tank; 42. a constant temperature box; 421. heating wires; 43. a water passing hole; 44. an oxygen-free separator; 441. and (5) passing through pores.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-7, the present invention is an efficient anaerobic denitrification reactor for removing high-concentration nitrate nitrogen, comprising a coarse filtration tank 1, a sand settling tank 2 and a nitrogen removal tank 4, wherein a water inlet 10 is arranged above the coarse filtration tank 1, a water outlet 11 is arranged at one side of the coarse filtration tank 1 and is connected with a water inlet 20 above the sand settling tank 2 through a water pipe and a first water pump 13, the first water pump 13 is used for conveying filtered water from the coarse filtration tank 1 into the sand settling tank 2, a water outlet 21 is arranged above the sand settling tank 2, a water inlet 401 is arranged at one side of the nitrogen removal tank 4, a second water pump 400 is arranged outside the nitrogen removal tank 4 and below the water inlet 401, a water inlet end of the second water pump 400 is connected with the water outlet 21 through the water pipe, a water outlet 400 is used for conveying water in the sand settling tank 2 into the nitrogen removal tank 4, a water outlet 403 and a water outlet 402 are arranged at the upper end of the nitrogen removal tank 4, and the air outlet 402 is used for discharging nitrogen and carbon dioxide generated in the nitrogen and carbon dioxide process; in the process of preparing purified water by treating sewage containing nitrate and nitrite, larger pollutants are filtered through the rough filtration tank 1, sand particles with smaller particle sizes are deposited and discharged through the sand sedimentation tank 2, and finally nitrate ions and nitrite ions in the water are denitrified through denitrifying bacteria in the nitrogen removal tank 4 to form nitrogen to be discharged out of the water, so that purified water can be obtained, and the problem of complicated treatment steps of nitrate and nitrite in the process of preparing purified water by sewage is solved.
Specifically, referring to fig. 2, an inner tank 41 is disposed in the nitrogen removal tank 4, a plurality of water passing holes 43 are formed in the side surface of the bottom of the inner tank 41, a plurality of anaerobic baffles 44 are disposed in the inner tank 41 and above the water passing holes 43 at equal intervals, denitrifying bacteria are disposed on the plurality of anaerobic baffles 44, each anaerobic baffle 44 is provided with a plurality of air passing holes 441, the air passing holes 441 on two adjacent anaerobic baffles 44 are disposed oppositely, the center lines of the air passing holes 441 on two adjacent anaerobic baffles 44 are not overlapped, a constant temperature box 42 is disposed at the outer side of the inner tank 41, and an electric heating wire 421 is disposed in the inner tank 41, and as the proper pH value of denitrification is 8-8.6, the temperature of the water in the nitrogen removal tank 4 can be controlled to be 20-35 ℃ through the electric heating wire 421, so that the maximum efficiency of denitrification can be ensured, when the projections of the anaerobic baffles 44 along the horizontal direction are completely fallen into the projections of the constant temperature box 42, the air passing holes 441 are heated relatively uniformly, all the anaerobic baffles 44 can be rapidly heated to the air passing through the inner side of the nitrogen removal tank 41, and then the nitrogen ions can be rapidly removed from the inner side of the nitrogen removal tank 41 to the water of the nitrogen removal tank, and the nitrogen removal tank is rapidly filtered by the electric heating wire 41, and the nitrogen ions can be discharged from the inner side of the nitrogen removal tank 4 to the water through the water passing through the denitrification holes, and the inside of the denitrification tank 41, and the nitrogen removal tank is required to be the nitrogen ion-free from the inside of the water passing through the denitrification holes 41;
because nitrate ions and nitrite ions are denitrified by denitrifying bacteria, a certain carbon source is needed to be added as energy and reaction promoters such as methanol, starch, protein and the like in the denitrification process, in this case, methanol reacts with nitrate ions to generate nitrite ions and carbon dioxide, nitrite ions react with methanol to generate nitrogen and carbon dioxide, nitrate ions can also directly react with methanol and water to generate nitrogen and carbon dioxide, in the three reactions, water is generated, and hydrogen ions in water are needed, more carbon dioxide is generated in the reaction process, at the moment, carbon dioxide and nitrogen can be discharged upwards together through the air outlet 402, and after the water in the nitrogen removal tank 4 meets the standard requirement, water can be discharged to obtain purified water for taking out nitrogen.
In addition, a sand accumulation box 250 is arranged on one side of the sand settling tank 2, a sand feeding pipe 3 is arranged on the side face of the sand accumulation box, a sand outlet 35 is arranged below one end of the sand feeding pipe 3, a sand feeding motor 34 is arranged at one end, close to the sand outlet 35, of the sand feeding pipe 3, a flat shaft 32 is rotatably arranged in the sand feeding pipe 3, one end of the flat shaft 32 is connected with the output end of the sand feeding motor 34, an inclined shaft 31 is hinged to the other end of the flat shaft 32, and sand feeding blades 33 are arranged on the flat shaft 32 and the inclined shaft 31; the horizontal height of the sand feeding motor 34 is higher than that of the water inlet II 20;
secondly, rotate the bottom that sets up in sediment tank 2 and dredge husky spiral leaf 25 and one end is connected with the motor output that the outside set up, dredge husky spiral leaf 25's the other end and be located the sand box 250, carry the sand grain of bottom deposit to the sand box 250 in through dredge husky spiral leaf 25, then drive flat axle 32 through sand feeding motor 34 and rotate, flat axle 32 drives again and rotates with its inclined shaft 31 that is connected through the universal joint, alright carry the sand of the product in the sand box 250 to the sand outlet 35 department and discharge, effectually with the less sand grain of aquatic grain diameter discharge, guarantee the purity of water.
Meanwhile, referring to fig. 3, 4 and 5, a guide ring 22 is arranged in the sand settling tank 2, a plurality of guide vanes 221 are uniformly and fixedly arranged at the lower end of the guide ring 22 in a ring shape, each guide vane 221 forms an included angle with the guide vane 221 at the tangent line of the joint of the guide ring 22, so that a gap for accommodating water flow to pass through is formed between two adjacent guide vanes 221, a rotating shaft 231 is rotatably arranged above the inner part of the sand settling tank 2 and positioned on the central axis of the guide ring 22, a spiral vane 232 is arranged on the rotating shaft 231, a sand support 24 is arranged at the lower end of the rotating shaft 231, a plurality of guide sand falling openings 240 are formed in a ring array on the sand support 24, a sand falling slope 241 is arranged between the guide sand falling openings 240, a sand settling motor 23 is arranged above the sand settling tank 2, the output end of the sand settling motor is connected with the rotating shaft 231, the spiral vane 232 on the rotating shaft 231 is in an inverted cone shape, after the water after rough filtration enters the sand settling tank 2 from the water inlet II 20, the internal water flow rotates to form a vortex under the action of the spiral blades 232, the water flow forms a split vortex through the guide blades 221 while the water flow rotates in a vortex, then the slope of the sand falling slope 241 on the sand falling support 24 forms a guiding effect on each vortex, because the sand supporting 24 rotates from the higher side of the falling Sha Po 241 to the lower side in the rotating process, on one hand, the resistance of the water flow in the rotating process can be reduced, on the other hand, because the sand falling slope 241 is in a slope form, the cut water flow forms a vortex after bypassing the highest place in the rotating process, then the vortex moves downwards, sand particles in the water are converged along with the water flow downwards to the bottom of the sand settling tank 2 through the guide sand falling port 240, the sand particles in the water are effectively deposited on the bottom, thereby completely removing sand.
After sand particles are deposited at the bottom, the water flow above the water flow can carry nitrogen-containing pollutants such as nitrate, nitrite and the like to flow into the nitrogen removal tank 4 from the second water outlet 21 for anaerobic denitrification and nitrogen removal.
Referring to fig. 7, a filter cartridge 12 is disposed in the coarse filtration tank 1, and is used for filtering water flow between the first water inlet 10 and the first water outlet 11, the water flow enters the coarse filtration tank 1 through the first water inlet 10 and flows out through the first water outlet 11, and the middle part of the water flow is filtered through the filter cartridge 12, so that visible pollutants in the water can be filtered.
The working principle of the invention is as follows:
during operation, sewage is introduced into the coarse filtration tank 1 from the first water inlet 10, is filtered under the action of the filter cylinder 12, is then input into the sand sedimentation tank 2 from the first water outlet 11, after the coarse filtration water enters the sand sedimentation tank 2 from the second water inlet 20, internal water flow rotates to form vortex under the action of the spiral vane 232, the water flow forms split vortex through the guide vane 221 while the water flow rotates in vortex, then the slope of the falling sand slope 241 on the falling sand support 24 forms guiding action on each vortex, and the rotating direction of the falling sand support 24 rotates from the higher side of the falling sand support Sha Po to the lower side in the rotating process, so that on one hand, the resistance of the water flow in the rotating process can be reduced, on the other hand, the falling sand slope 241 is in a slope form, the cut water flow forms vortex after bypassing the highest place in the rotating process, and then the vortex can move downwards, and then sand particles in water flow downwards through the diversion sand falling opening 240 to the bottom of the sand settling tank 2 to be converged, and then sand particles in water are completely deposited and bottom, then sand particles deposited at the bottom are conveyed into the sand accumulating box 250 through the sand dredging spiral blades 25, then the flat shaft 32 is driven by the sand conveying motor 34 to rotate, the flat shaft 32 is driven by the inclined shaft 31 connected with the flat shaft 32 through a universal joint to rotate, accumulated sand in the sand accumulating box 250 can be conveyed to the sand outlet 35 and discharged, nitrogen-containing pollutants such as nitrate and nitrite can be carried by water flow above and flow into the nitrogen removing tank 4 from the water outlet 21, water flows into the inner tank 41 from the outer side of the inner tank 41 through the water passing holes 43, then denitrifying bacteria on the anaerobic partition 44 in the inner tank 41 perform denitrification reaction, nitrate ions are firstly converted into nitrite ions, then, nitrite ions are denitrified to change nitrogen elements into nitrogen, and finally discharged from the gas outlet 402.
The foregoing describes one embodiment of the present invention in detail, but the description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. All equivalent changes and modifications within the scope of the present invention are intended to be covered by the present invention.
Claims (3)
1. The utility model provides a high-efficient anaerobic denitrification reactor of desorption high concentration nitrate nitrogen, includes straining jar (1), desilting jar (2) and nitrogen removal jar (4), its characterized in that, the top of straining jar (1) is provided with water inlet one (10), the one side of straining jar (1) is provided with delivery port one (11) and is connected with water inlet two (20) above desilting jar (2) through water pipe and first water pump (13), the top of desilting jar (2) is provided with delivery port two (21), one side of nitrogen removal jar (4) is provided with water inlet three (401), the outside of nitrogen removal jar (4) and the below that is located water inlet three (401) are provided with second water pump (400), the water inlet end of second water pump (400) is connected with water inlet three (21) through the water pipe, the water outlet end of second water pump (400) is connected with water inlet three (401), the top of nitrogen removal jar (4) is provided with delivery port three (403) and gas outlet (402);
an inner tank (41) is arranged in the nitrogen removal tank (4), a plurality of water passing holes (43) are formed in the side face of the bottom of the inner tank (41), a plurality of anaerobic baffles (44) are arranged in the inner tank (41) and above the water passing holes (43) at equal intervals, a plurality of air passing holes (441) are formed in the anaerobic baffles (44), and denitrifying bacteria are arranged on the anaerobic baffles (44);
one side of the sand settling tank (2) is provided with a sand accumulation box (250) and the side surface of the sand accumulation box (250) is provided with a sand feeding pipe (3), a sand outlet (35) is formed below one end of the sand feeding pipe (3), one end, close to the sand outlet (35), of the sand feeding pipe (3) is provided with a sand feeding motor (34), a flat shaft (32) is arranged in the sand feeding pipe (3) in a rotating mode, one end of the flat shaft (32) is connected with the output end of the sand feeding motor (34), the other end of the flat shaft (32) is hinged with an inclined shaft (31), and sand feeding blades (33) are arranged on the flat shaft (32) and the inclined shaft (31);
the horizontal height of the sand feeding motor (34) is higher than that of the water inlet II (20);
the bottom of the sand settling tank (2) is rotatably provided with a sand dredging spiral blade (25), one end of the sand dredging spiral blade (25) is connected with an output end of an externally arranged motor, and the other end of the sand dredging spiral blade (25) is positioned in a sand accumulation box (250);
the sand settling tank is characterized in that a guide ring (22) is arranged in the sand settling tank (2), a plurality of guide blades (221) are uniformly and fixedly arranged at the lower end of the guide ring (22) in an annular shape, the guide blades (221) are arranged at the tangent line of the joint of the guide ring (22) and the guide blades (221) respectively in an included angle, so that a gap for containing water flow to pass through is formed between every two adjacent guide blades (221), a rotating shaft (231) is rotatably arranged above the inner part of the sand settling tank (2) and positioned on the central axis of the guide ring (22), spiral blades (232) are arranged on the rotating shaft (231), sha Tuo (24) are arranged at the lower end of the rotating shaft (231), a plurality of guide sand falling openings (240) are formed in an annular array on the Sha Tuo (24), and sand falling slopes (241) are arranged between the guide sand falling openings (240);
the sand settling tank is characterized in that a sand settling motor (23) is arranged above the sand settling tank (2), the output end of the sand settling motor (23) is connected with a rotating shaft (231), and spiral blades (232) on the rotating shaft (231) are in inverted conical shapes.
2. An efficient anaerobic denitrification reactor for removing high-concentration nitrate nitrogen according to claim 1, wherein a constant temperature box (42) is arranged on the outer side of the inner tank (41) and an electric heating wire (421) is arranged inside the constant temperature box (42), and the projection of the anaerobic baffle plate (44) along the horizontal direction completely falls into the projection of the constant temperature box (42).
3. An efficient anaerobic denitrification reactor for removing high-concentration nitrate nitrogen according to claim 1, wherein a filter cartridge (12) is arranged in the rough filtration tank (1) for filtering water flowing into the first water inlet (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311252875.6A CN116986776B (en) | 2023-09-27 | 2023-09-27 | High-efficiency anaerobic denitrification reactor for removing high-concentration nitrate nitrogen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311252875.6A CN116986776B (en) | 2023-09-27 | 2023-09-27 | High-efficiency anaerobic denitrification reactor for removing high-concentration nitrate nitrogen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116986776A CN116986776A (en) | 2023-11-03 |
| CN116986776B true CN116986776B (en) | 2023-12-08 |
Family
ID=88523563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311252875.6A Active CN116986776B (en) | 2023-09-27 | 2023-09-27 | High-efficiency anaerobic denitrification reactor for removing high-concentration nitrate nitrogen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116986776B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10109051A (en) * | 1996-10-04 | 1998-04-28 | Nippon Genryo Kk | Sand washing device |
| CN205516691U (en) * | 2016-03-02 | 2016-08-31 | 山东港源海洋生物工程有限公司 | Husky water separator and husky separation of water system |
| WO2019169980A1 (en) * | 2018-03-09 | 2019-09-12 | 上海世浦泰膜科技有限公司 | Anaerobic ammonia oxidation-based sewage treatment process using mbr |
| CN218089108U (en) * | 2022-04-01 | 2022-12-20 | 江苏道泽环保科技有限公司 | Be used for high concentration organic sewage denitrification device |
| CN218774456U (en) * | 2022-11-29 | 2023-03-31 | 山东灯塔水母海洋科技有限公司 | Integral type sea water sand filtering jar |
| CN115957544A (en) * | 2022-11-28 | 2023-04-14 | 安徽湓润环保科技有限公司 | Rotational flow sand setting device for sewage treatment |
| CN116282678A (en) * | 2021-10-11 | 2023-06-23 | 净化控股集团股份有限公司 | Integrated assembly type sewage nitrogen and sand removal equipment |
| CN219423937U (en) * | 2022-09-27 | 2023-07-28 | 寇路建 | Sewage treatment sediment device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012099283A1 (en) * | 2011-01-19 | 2012-07-26 | 주식회사 드림이엔지 | Sewage treatment apparatus |
-
2023
- 2023-09-27 CN CN202311252875.6A patent/CN116986776B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10109051A (en) * | 1996-10-04 | 1998-04-28 | Nippon Genryo Kk | Sand washing device |
| CN205516691U (en) * | 2016-03-02 | 2016-08-31 | 山东港源海洋生物工程有限公司 | Husky water separator and husky separation of water system |
| WO2019169980A1 (en) * | 2018-03-09 | 2019-09-12 | 上海世浦泰膜科技有限公司 | Anaerobic ammonia oxidation-based sewage treatment process using mbr |
| CN116282678A (en) * | 2021-10-11 | 2023-06-23 | 净化控股集团股份有限公司 | Integrated assembly type sewage nitrogen and sand removal equipment |
| CN218089108U (en) * | 2022-04-01 | 2022-12-20 | 江苏道泽环保科技有限公司 | Be used for high concentration organic sewage denitrification device |
| CN219423937U (en) * | 2022-09-27 | 2023-07-28 | 寇路建 | Sewage treatment sediment device |
| CN115957544A (en) * | 2022-11-28 | 2023-04-14 | 安徽湓润环保科技有限公司 | Rotational flow sand setting device for sewage treatment |
| CN218774456U (en) * | 2022-11-29 | 2023-03-31 | 山东灯塔水母海洋科技有限公司 | Integral type sea water sand filtering jar |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116986776A (en) | 2023-11-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20010019027A1 (en) | Solid-liquid separator | |
| CN102603116B (en) | Distribution treatment combination technological method for domestic sewage of small-sized towns | |
| CN104230123B (en) | Remove the device of inorganic particle in Sewage treatment systems | |
| CN216273612U (en) | Sewage treatment system | |
| CN209522646U (en) | A kind of bio-contact oxidation High-rate sedimentation integration facility | |
| CN111704319A (en) | Prefabricated modular municipal sewage treatment system and sewage treatment method | |
| CN205974155U (en) | Multistage integrated rotating biological disk | |
| CN110818179B (en) | Efficient nitrogen and phosphorus removal sewage treatment system and sewage treatment method | |
| CN116986776B (en) | High-efficiency anaerobic denitrification reactor for removing high-concentration nitrate nitrogen | |
| CN111592185A (en) | Integrated sewage treatment device and method for deep nitrogen and phosphorus removal | |
| CN213231899U (en) | Coagulating sedimentation nitrogen and phosphorus removal water treatment system | |
| CN214422373U (en) | A sand removal device of intaking for sewage treatment plant | |
| CN211595371U (en) | Domestic sewage treatment device | |
| CN217947853U (en) | Rapid denitrification device for slightly polluted river water | |
| CN115124160A (en) | Riverway water quality bypass purification treatment process | |
| CN219907300U (en) | High-efficient bean products waste water treatment biochemical system | |
| CN217627881U (en) | Riverway water quality bypass purification unit | |
| CN113072241A (en) | Domestic sewage treatment device and treatment method thereof | |
| CN215288436U (en) | Chemical wastewater upgrading treatment equipment | |
| CN214936814U (en) | Refuse dump waste water filtration degradation processing apparatus | |
| CN116409908B (en) | Rainfall pollution rapid purification system and process | |
| CN218980783U (en) | Circulation sand removal device of dry anaerobic biogas slurry | |
| CN218145995U (en) | Efficient sewage flocculation clarification device | |
| CN216106511U (en) | Beverage production sewage treatment system based on UASB reactor | |
| CN108373246A (en) | Domestic sewage treatment device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |