CN117985858A - Tubular biochemical treatment device for treating semi-coke wastewater - Google Patents
Tubular biochemical treatment device for treating semi-coke wastewater Download PDFInfo
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- CN117985858A CN117985858A CN202410407305.8A CN202410407305A CN117985858A CN 117985858 A CN117985858 A CN 117985858A CN 202410407305 A CN202410407305 A CN 202410407305A CN 117985858 A CN117985858 A CN 117985858A
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- anoxic
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- tube
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- 239000002351 wastewater Substances 0.000 title claims abstract description 49
- 239000000571 coke Substances 0.000 title claims abstract description 25
- 238000003756 stirring Methods 0.000 claims abstract description 74
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 62
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 238000005273 aeration Methods 0.000 claims description 31
- 238000009826 distribution Methods 0.000 claims description 23
- 238000002156 mixing Methods 0.000 claims description 14
- 239000010802 sludge Substances 0.000 claims description 14
- 238000004140 cleaning Methods 0.000 claims description 13
- 239000011295 pitch Substances 0.000 claims description 13
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 10
- 239000001301 oxygen Substances 0.000 claims description 10
- 229910052760 oxygen Inorganic materials 0.000 claims description 10
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 239000013589 supplement Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 description 27
- 239000002957 persistent organic pollutant Substances 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 4
- 206010021143 Hypoxia Diseases 0.000 description 3
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 3
- 238000005276 aerator Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 210000003437 trachea Anatomy 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/301—Aerobic and anaerobic treatment in the same reactor
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- 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
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Landscapes
- 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)
- Mixers Of The Rotary Stirring Type (AREA)
Abstract
The invention relates to a tubular biochemical treatment device for treating semi-coke wastewater, which comprises a vertical biochemical treatment tube with a sleeve structure, wherein the biochemical treatment tube comprises an inner anaerobic tube and an outer comprehensive tube, the comprehensive tube comprises an upper aerobic tube and a lower anoxic tube, and the anoxic tube comprises an inner anoxic tube and an outer anoxic tube; the top of the anaerobic pipe is positioned on the ground and is connected with an exhaust pipe for discharging methane generated by anaerobic treatment; the bottom of the anaerobic pipe is communicated with the bottom of the anoxic inner pipe, the top of the anoxic inner pipe is communicated with the top of the anoxic outer pipe, the bottom of the anoxic outer pipe is connected with the bottom of the aerobic pipe through the aerobic front pipe, and the aerobic front pipe is arranged outside the anoxic outer pipe; the top of the aerobic pipe is positioned on the ground, and the top of the aerobic pipe is open; the upper middle part of the anaerobic pipe is provided with a stirring device, and the inner wall of the lower middle part is provided with at least one section of guide protruding part, so that wastewater can flow along the guide protruding part, the water pressure is reduced, and biogas discharge is facilitated.
Description
Technical Field
The invention belongs to the technical field of semi-coke wastewater treatment, and particularly relates to a tubular biochemical treatment device for treating semi-coke wastewater.
Background
The semi-coke wastewater is industrial wastewater generated by cleaning, post-treatment products and other operations when semi-coke products are produced in the field of coal chemical industry. The semi-coke wastewater is characterized by larger oil content, larger organic pollutant content and small ammonia nitrogen content. At present, the semi-coke wastewater is deoiled in the previous stage and then subjected to advanced oxidation, so that the concentration of organic matters is reduced, but the cost of advanced oxidation treatment is higher, and in addition, if biochemical treatment is adopted, the occupation of a biochemical pool body is more.
Disclosure of Invention
In view of the above problems, the present invention provides a tubular biochemical treatment apparatus for treating semi-coke wastewater, comprising a biochemical treatment tube of a vertical sheath structure, the biochemical treatment tube comprising an anaerobic tube of an inner layer and an integrated tube of an outer layer, the integrated tube comprising an aerobic tube of an upper portion and an anoxic tube of a lower portion, the anoxic tube comprising an anoxic inner tube of the inner layer and an anoxic outer tube of the outer layer;
The top of the anaerobic pipe is positioned on the ground and is connected with an exhaust pipe for discharging methane generated by anaerobic treatment; the bottom of the anaerobic pipe is communicated with the bottom of the anoxic inner pipe, the top of the anoxic inner pipe is communicated with the top of the anoxic outer pipe, the bottom of the anoxic outer pipe is connected with the bottom of the aerobic pipe through the aerobic front pipe, and the aerobic front pipe is arranged outside the anoxic outer pipe; the top of the aerobic pipe is positioned on the ground, and the top of the aerobic pipe is open;
The upper middle part of the anaerobic pipe is provided with a stirring device, and the inner wall of the lower middle part is provided with at least one section of guide protruding part, so that wastewater can flow along the guide protruding part, the water pressure is reduced, and biogas discharge is facilitated.
Inputting deoiled semi-coke wastewater into an anaerobic pipe, flowing down in the anaerobic pipe, and simultaneously carrying out anaerobic reaction, wherein the stirring device promotes the wastewater to be fully contacted with activated sludge, improves the treatment efficiency, decomposes organic matters in the wastewater, discharges generated biogas from an exhaust pipe at the top, and then carries out unified treatment; the waste water after anaerobic treatment flows through an anoxic inner pipe (up-flow) and an anoxic outer pipe (down-flow) in sequence, and is subjected to anoxic treatment to remove ammonia nitrogen; then, the wastewater flows into an aerobic pipe from an aerobic front pipe for aerobic treatment, and organic pollutants are continuously degraded. The invention adopts the biochemical treatment pipe which can be buried underground, utilizes the longer anaerobic pipe, the aerobic front pipe and the aerobic pipe to treat organic pollutants, utilizes the anoxic pipe to treat ammonia nitrogen, effectively reduces the load of the organic pollutants of the aerobic front pipe and the aerobic pipe, and saves the occupation of land by the standpipe type design.
Optionally, the stirring device comprises a vertical stirring shaft and a stirring paddle, the top of the stirring shaft is fixed on the top surface of the anaerobic pipe, and the outer side surface of the stirring shaft is provided with a continuous thread groove;
The stirring rake is horizontal, including the go-between in center and the stirring vane of go-between both sides, the go-between cover is in the outside of (mixing) shaft, and the inboard of go-between has the texture of cooperation (mixing) shaft surface recess, under decurrent rivers effect, the texture of go-between inner wall cooperatees with the recess in the (mixing) shaft outside, and the go-between rotates downwards along the (mixing) shaft, drives the stirring vane simultaneously and rotates downwards, stirs the water.
Further alternatively, the stirring wing is provided with a cleaning brush at one end far away from the connecting ring, the bristles of the cleaning brush are flexible, the bristles can contact the inner wall of the anaerobic pipe, and the cleaning brush rotates along with the stirring wing to clean the inner wall of the anaerobic pipe, so that the organic dirt is prevented from adhering to the inner wall.
Optionally, a first section of flow guiding protruding part and a second section of flow guiding protruding part are arranged on the inner wall of the middle lower part of the anaerobic pipe from top to bottom, the first section of flow guiding protruding part comprises a first protruding plate, one side of the first protruding plate is fixed on the inner wall of the anaerobic pipe, and the other side extends to the inside of the anaerobic pipe; the whole first protruding plate is spirally, uniformly and continuously coiled from top to bottom, and the pitches of the upper adjacent threads and the lower adjacent threads are equal;
The second-section flow guiding bulge part comprises a second bulge plate, one side of the second bulge plate is fixed on the inner wall of the anaerobic pipe, and the other side extends to the inside of the anaerobic pipe; the whole second protruding plate is spirally, uniformly and continuously coiled from top to bottom, and the pitches of the upper adjacent threads and the lower adjacent threads are equal; the bottom of the first protruding plate is connected with the top of the second protruding plate.
Further alternatively, the heights of the first section of flow guiding protruding part and the second section of flow guiding protruding part are the same, the ratio of the length of the first protruding plate protruding the inner wall of the anaerobic pipe to the inner diameter of the anaerobic pipe is 1 (4-6), the ratio of the length of the first protruding plate protruding the inner wall of the anaerobic pipe to the length of the second protruding plate protruding the inner wall of the anaerobic pipe is 1 (1.3-2), and the ratio of the thread spacing of the second protruding plate to the thread spacing of the first protruding plate is 1 (1.1-1.5).
Optionally, the bottom of oxygen deficiency inner tube is equipped with annular aeration pipe, and annular aeration pipe passes through the subaerial air feeder of trachea connection, and annular aeration pipe's upper surface and the side that faces the oxygen deficiency inner tube all evenly are equipped with the aeration hole for to oxygen input oxygen to the oxygen deficiency inner tube.
Optionally, the top of the anoxic tube is provided with an inclined top plate, the top of the top plate is fixed on the outer side of the anaerobic tube, and the bottom of the top plate extends outwards and is connected with the top of the outer side wall of the anoxic outer tube.
Optionally, the aerobic front pipe, the anoxic pipe and the anaerobic pipe are concentrically arranged, and the outer diameter of the biochemical treatment pipe at the aerobic front pipe is equal to the outer diameter of the biochemical treatment pipe at the aerobic pipe, so that the outer wall of the biochemical treatment pipe is regular, and the construction and the installation are convenient.
Optionally, a plurality of aeration pipes I are arranged in the aerobic front pipe, and the aeration pipes I are connected with an external air supply device through air pipes to supplement oxygen for water flowing through the aerobic front pipe.
Optionally, the aerobic tube comprises an upper uniform diameter region and a lower flow expansion region, the wall surface of the inner side of the flow expansion region is the top plate, and a plurality of aeration tubes II are uniformly arranged in the flow expansion region to re-oxygenate the wastewater entering the aerobic tube;
a plurality of groups of turbulence assemblies are arranged in the uniform diameter area from bottom to top to provide turbulence for the water body in the uniform diameter area and promote the wastewater to fully contact with the aerobic activated sludge.
Further optionally, the turbulence assembly comprises an upper-layer flow distribution plate group and a lower-layer flow converging plate group, the flow converging plate group comprises a plurality of circles of concentric flow converging plates, the longitudinal section of each flow converging plate is in a shape like a Chinese character 'ji', and the top of each flow converging plate is provided with a flow passing port, so that water below the flow converging plate can flow through a gap between the flow passing port and an adjacent flow converging plate;
The flow distribution plate group comprises a plurality of circles of flow distribution plates which are concentrically arranged, the flow distribution plates are in a circular ring shape, the central line of each flow distribution plate and the central line of the through flow opening are positioned on the same vertical line, and water bodies passing through the through flow opening can be blocked, so that the water bodies are transversely dispersed to the two sides of the flow distribution plates and are mixed with water bodies passing through the gaps of the adjacent confluence plates again.
Further optionally, the confluence plate comprises an outer ring vertical plate and an inner ring vertical plate, the inner ring vertical plate is close to one side of the anaerobic pipe, the outer ring vertical plate is close to one side of the outer side wall of the biochemical treatment pipe, the bottom of the inner ring vertical plate is straight and points to the anaerobic pipe, and the bottom of the outer ring vertical plate is straight and points to the outer side of the biochemical treatment pipe; the upright parts of the outer ring vertical plate and the inner ring vertical plate are inclined plate surfaces close to each other, and the through flow opening is an annular through opening surrounding one circle of the aerobic pipe.
Drawings
FIG. 1 is a schematic structural view of the tubular biochemical treatment device for treating semi-coke wastewater;
FIG. 2 is a schematic view of the engagement of the stirring wings with the guide rail;
fig. 3 is a schematic structural view of a spoiler assembly.
In the attached drawings, a 1-anaerobic pipe, a 2-aerobic pipe, a 3-anoxic inner pipe, a 4-anoxic outer pipe, a 5-aerobic front pipe, a 6-exhaust pipe, a 7-stirring shaft, an 8-inner ring vertical plate, a 9-connecting ring, a 10-stirring wing, a 11-cleaning brush, a 12-guide rail, a 13-slide block, a 14-cutting interface, a 15-first protruding plate, a 16-second protruding plate, a 17-annular aerator pipe, a 18-top plate, a 19-uniform diameter area, a 20-flow expansion area, a 21-aerator pipe II, a 22-confluence plate, a 23-overflow port, a 24-flow distribution plate and a 25-outer ring vertical plate.
Detailed Description
The embodiment provides a tubular biochemical treatment device for treating semi-coke wastewater, which comprises a biochemical treatment tube with a vertical sleeve structure, as shown in fig. 1-3, wherein the biochemical treatment tube comprises an inner anaerobic tube 1 and an outer comprehensive tube, the comprehensive tube comprises an upper aerobic tube 2 and a lower anoxic tube, and the anoxic tube comprises an inner anoxic inner tube 3 and an outer anoxic outer tube 4;
The top of the anaerobic pipe 1 is positioned on the ground and is connected with an exhaust pipe 6 for discharging methane generated by anaerobic treatment; the bottom of the anaerobic pipe 1 is communicated with the bottom of the anoxic inner pipe 3, the top of the anoxic inner pipe 3 is communicated with the top of the anoxic outer pipe 4, the bottom of the anoxic outer pipe 4 is connected with the bottom of the aerobic pipe 2 through an aerobic front pipe 5, and the aerobic front pipe 5 is arranged at the outer side of the anoxic outer pipe 4; the top of the aerobic pipe 2 is positioned on the ground, and the top is open;
The upper middle part of the anaerobic pipe 1 is provided with a stirring device, and the inner wall of the lower middle part is provided with at least one section of flow guiding protruding part, so that wastewater can flow along the flow guiding protruding part, the water pressure is reduced, and the biogas discharge is facilitated.
Optionally, the biochemical treatment tube is hollow and cylindrical, and the anaerobic tube 1 and the comprehensive tube are concentrically arranged; the bottom of the anaerobic pipe 1 is not contacted with the bottom of the anoxic inner pipe 3, so that the water body at the bottom of the anaerobic pipe 1 can enter the anoxic inner pipe 3; the bottom of the anoxic inner tube 3 is closed, and the top is open, so that the water body of the anoxic inner tube 3 can enter the anoxic outer tube 4;
the top of the anoxic outer tube 4 is closed, and the bottom of the anoxic outer tube 4 is not contacted with the bottom of the comprehensive tube, so that the water body of the anoxic outer tube 4 can enter the aerobic front tube 5.
Optionally, the stirring device comprises a vertical stirring shaft 7 and a stirring paddle, the top of the stirring shaft 7 is fixed on the top surface of the anaerobic pipe 1, and the outer side surface of the stirring shaft 7 is provided with a continuous thread groove;
The stirring rake is horizontal, including the go-between 9 at center and the stirring wing 10 of go-between 9 both sides, go-between 9 cover is in the outside of (mixing) shaft 7, and the inboard of go-between 9 has the texture of cooperation (mixing) shaft 7 surface recess, and under decurrent rivers effect, the texture of go-between 9 inner wall cooperatees with the recess in (mixing) shaft 7 outside, and go-between 9 rotates downwards along (mixing) shaft 7, drives stirring wing 10 simultaneously and rotates downwards, stirs the water.
Further alternatively, a cleaning brush 11 is arranged at one end of the stirring wing 10 far away from the connecting ring 9, bristles of the cleaning brush 11 are flexible, the bristles can contact the inner wall of the anaerobic pipe 1, and the cleaning brush 11 rotates along with the stirring wing 10 to clean the inner wall of the anaerobic pipe 1, so that organic dirt is prevented from adhering to the inner wall;
The bottom of (7) the (7) stirring axle is equipped with stop device, avoids go-between (9) to drop.
Further optionally, a driving ring is arranged below the connecting ring 9, the inner side of the driving ring is provided with a texture matched with the groove on the outer surface of the stirring shaft 7, a motor is arranged inside the driving ring, the driving ring can rotate, the driving ring ascends along the stirring shaft 7 when rotating, the connecting ring 9 is pushed to ascend in a rotating way, and then the stirring wings 10 are driven to ascend in a rotating way, and at the moment, the rotating direction of the stirring wings 10 is opposite to the rotating direction when the stirring wings descend.
Further optionally, two vertical guide rails 12 are arranged on the inner wall of the anaerobic pipe 1, the cleaning brushes 11 of the stirring wings 10 on the two sides respectively correspond to one guide rail 12 when the connecting ring 9 moves to the bottom of the stirring shaft 7, telescopic sliding blocks 13 are arranged in the middle of the cleaning brushes 11, when the stirring wings 10 reach the bottom end of the stirring shaft 7, the sliding blocks 13 pop up and extend into the guide rails 12, and the sliding blocks 13 drive the stirring wings 10 to be driven to ascend;
The middle part of go-between 9 is equipped with cuts interface 14 for go-between 9 can split into two parts that length equals, cuts interface 14 and go-between 9 and be connected stirring wing 10's position and be 90 radians.
The invention provides two structural modes for lifting and resetting the stirring vane 10. Firstly, utilize the reverse rotation of driving ring, jack-up go up in the go up for go up in the go up in opposite directions stirring wing 10 is also rotating, can realize stirring the stirring water all the time in the stirring wing 10 removal process.
Secondly, the guide rail 12 and the sliding block 13 are utilized to drive the stirring wings 10 to ascend, the connecting ring 9 is in a detachable mode, after the connecting ring 9 reaches the bottom end of the stirring paddle, the end part of the stirring wings 10 is opposite to the guide rail 12, bristles have a certain length, the sliding block 13 can be covered, the inner wall of the anaerobic pipe 1 is prevented from being scratched by the sliding block 13, the sliding block 13 can be ejected out and extend into the guide rail 12, the sliding block 13 is in communication connection with an external control device and can move upwards along the guide rail 12, the cut-off interface 14 is contracted, the connecting ring 9 is broken into two semicircle, and each semicircle corresponds to one stirring wing 10, so that the groove of the stirring shaft 7 does not obstruct the movement of the connecting ring 9; when the stirring wings 10 move upwards and reset, the cut-off interfaces 14 of the connecting rings 9 rebound and reset, so that the connecting rings 9 become a complete ring, and are clamped on the stirring shaft 7, and then the sliding blocks 13 retract to disconnect the connection with the guide rails 12. The stirring device is electrified and stirred all the time without a motor, and the stirring wings 10 automatically rotate and move downwards by means of the cooperation of water flow force, the connecting ring 9 and the stirring shaft 7, so that energy consumption is reduced.
The waste water in the anaerobic pipe 1 always flows downwards, the grooves of the stirring shaft 7 are continuous, sludge is not easy to accumulate in the grooves, and in addition, the grooves can be cleaned in real time due to the up-and-down movement of the connecting ring 9. The outer surface of the guide rail 12 can be covered with two flexible rubber sheets, the butt joint gap of the two rubber sheets is vertical and is positioned in the middle of the guide rail 12, the function of a cover curtain is exerted, sludge is prevented from entering the guide rail 12, and the slide block 13 can jack the two rubber sheets.
Optionally, a first section of flow guiding protruding part and a second section of flow guiding protruding part are arranged on the inner wall of the middle lower part of the anaerobic pipe 1 from top to bottom, the first section of flow guiding protruding part comprises a first protruding plate 15, one side of the first protruding plate 15 is fixed on the inner wall of the anaerobic pipe 1, and the other side extends to the inside of the anaerobic pipe 1; the first protruding plate 15 is spirally, uniformly and continuously coiled from top to bottom, and the pitches of the upper adjacent threads and the lower adjacent threads are equal;
The second-section flow guiding bulge part comprises a second bulge plate 16, one side of the second bulge plate 16 is fixed on the inner wall of the anaerobic pipe 1, and the other side extends to the inside of the anaerobic pipe 1; the second protruding plate 16 is spirally, uniformly and continuously coiled from top to bottom, and the pitches of the upper adjacent threads and the lower adjacent threads are equal; the bottom end of the first projecting plate 15 is connected to the top end of the second projecting plate 16.
Further alternatively, the heights of the first section of flow guiding protruding part and the second section of flow guiding protruding part are the same, the ratio of the length of the first protruding plate 15 protruding the inner wall of the anaerobic pipe 1 to the inner diameter of the anaerobic pipe 1 is 1 (4-6), the ratio of the length of the first protruding plate 15 protruding the inner wall of the anaerobic pipe 1 to the length of the second protruding plate 16 protruding the inner wall of the anaerobic pipe 1 is 1 (1.3-2), and the ratio of the thread spacing of the second protruding plate 16 to the thread spacing of the first protruding plate 15 is 1 (1.1-1.5).
The bottom of the stirring shaft 7 is separated from the top of a section of flow guiding protruding part by a small section of distance, so that the stirring wings 10 are prevented from touching the first protruding plate 15. The semi-coke wastewater is input into the anaerobic pipe 1, and under the action of the stirring device, the wastewater fully contacts with anaerobic sludge to decompose organic dirt, and the generated biogas rises and is discharged out of the anaerobic pipe 1. However, the wastewater flows to the middle lower part of the anaerobic pipe 1, and the water pressure is higher as the wastewater flows downwards, so that biogas is not discharged smoothly. The invention designs two sections of guide convex parts, wastewater flows to the parts, water bodies close to the inner wall sequentially flow along the first convex plate 15 and the second convex plate 16 to form spiral water flow, and the internal water bodies are driven to flow downwards in a spiral manner, so that the flow speed of the water bodies is increased, the water pressure is reduced, and methane is easy to discharge. The second projecting plate 16 has denser threads and longer projecting length, the rotational flow degree of the water body in the two sections of the diversion projecting parts is increased, the flow speed is accelerated, and the water pressure increased due to the increase of the depth is counteracted. The invention utilizes the convex plate to manufacture the rotational flow of the water body, improves the flow velocity of the water body, does not use mechanical drive, and saves energy consumption.
Optionally, an annular aeration pipe 17 is arranged at the bottom of the anoxic inner pipe 3, the annular aeration pipe 17 is connected with an air supply device on the ground through an air pipe, and aeration holes are uniformly formed in the upper surface of the annular aeration pipe 17 and the side surface facing the anoxic inner pipe 3 and are used for inputting oxygen into the anoxic inner pipe 3.
The annular aeration pipe 17 is positioned at the bottom of the biochemical treatment pipe, and in theory, the aeration is only performed at the position, and larger air pressure is needed to overcome the water pressure so as to expose bubbles, so that the energy consumption is larger. In the invention, under the action of the two-stage flow guide protruding part, the water flow at the bottom of the anaerobic pipe 1 is rotational flow with higher flow speed, the water body can continue rotational flow after being separated from the limitation of the pipe wall of the anaerobic pipe 1 and is outwards diffused, at the moment, the water flow speed is also higher, the water pressure is reduced, the aeration direction of the annular aeration pipe 17 also conforms to the flow direction of the wastewater input into the anoxic inner pipe 3, the air pressure required by aeration is also reduced, and the energy consumption is saved.
The annular aeration pipe 17 supplements oxygen for the water body in the anoxic pipe, plays a role of pneumatic disturbance, promotes the wastewater to fully contact with the anoxic activated sludge, and performs anoxic biochemical treatment.
Optionally, the top of the anoxic tube is provided with an inclined top plate 18, the top of the top plate 18 is fixed on the outer side of the anaerobic tube 1, and the bottom extends outwards and is connected with the top of the outer side wall of the anoxic outer tube 4.
Because the waste water of the anoxic inner tube 3 flows up to the top of the anoxic tube and then flows down along the anoxic outer tube 4, the sludge part of the anoxic inner tube 3 is impacted to the top of the anoxic tube, and the traditional plane top surface has dead mud accumulation angles.
Optionally, the aerobic front pipe 5 is concentrically arranged with the anoxic pipe and the anaerobic pipe 1, and the outer diameter of the biochemical treatment pipe at the aerobic front pipe 5 is equal to the outer diameter of the biochemical treatment pipe at the aerobic pipe 2, so that the outer wall of the biochemical treatment pipe is regular, and the construction and the installation are convenient.
Optionally, a plurality of first aeration pipes are arranged in the aerobic front pipe 5, the first aeration pipes are connected with an external air supply device through air pipes, oxygen is supplied to the water body flowing through the aerobic front pipe 5, and because the pipe diameter of the aerobic front pipe 5 is smaller than that of the aerobic pipe 2, the water flow speed in the aerobic front pipe 5 is higher, the water pressure is lower, the first aeration pipes are convenient for aeration, and the oxygen and the wastewater are also beneficial to mixing.
The number and the positions of the first aeration pipes are reasonably set according to the oxygen content of the wastewater flowing through the aerobic front pipe 5, for example, the first aeration pipes are arranged at the bottom or the middle part of the aerobic front pipe 5, for example, a plurality of first aeration pipes are uniformly arranged along the circumferential direction of the aerobic front pipe 5.
Optionally, the aerobic tube 2 includes an upper uniform diameter region 19 and a lower flow expansion region 20, the top plate 18 is arranged on the inner wall surface of the flow expansion region 20, and a plurality of aeration tubes II 21 are uniformly arranged in the flow expansion region 20 to re-oxygenate the wastewater entering the aerobic tube 2;
a plurality of groups of turbulence assemblies are arranged in the uniform diameter area 19 from bottom to top to provide turbulence for the water body in the uniform diameter area 19 and promote the wastewater to fully contact with the aerobic activated sludge.
Further optionally, the turbulence assembly includes an upper-layer flow distribution plate group and a lower-layer flow converging plate group, the flow converging plate group includes a plurality of circles of concentric flow converging plates 22, the longitudinal section of the flow converging plates 22 is in a shape like a Chinese character 'ji', and the top of the flow converging plates 22 is provided with a flow through opening 23, so that water below the flow converging plates 22 can flow through a gap between the flow through opening 23 and an adjacent flow converging plate 22;
The flow distribution plate group comprises a plurality of circles of flow distribution plates 24 which are concentrically arranged, the flow distribution plates 24 are annular, the central line of each flow distribution plate 24 and the central line of the corresponding through hole 23 are positioned on the same vertical line, and water bodies passing through the through hole 23 can be blocked, so that the water bodies are transversely dispersed to the two sides of the flow distribution plates 24 and are mixed with water bodies passing through gaps of adjacent confluence plates 22 again.
Further alternatively, the confluence plate 22 comprises an outer ring vertical plate 25 and an inner ring vertical plate 8, the inner ring vertical plate 8 is close to one side of the anaerobic pipe 1, the outer ring vertical plate 25 is close to one side of the outer side wall of the biochemical treatment pipe, the bottom of the inner ring vertical plate 8 is straight and points to the anaerobic pipe 1, and the bottom of the outer ring vertical plate 25 is straight and points to the outer side of the biochemical treatment pipe; the upright parts of the outer ring riser 25 and the inner ring riser 8 are inclined plate surfaces close to each other, and the through-flow opening 23 is an annular through opening surrounding one circle of the aerobic pipe 2.
The straight plates on two sides of the bus plate 22 are connected with the straight plates of the adjacent bus plates 22 on two sides through a plurality of connecting rods, and the connecting rods are uniformly distributed along the circumferential direction of the corresponding bus plate 22; the flow distribution plate is also arranged in the same way. The two bus plates 22 at the edge are respectively and directly connected with the outer side wall of the anaerobic pipe 1 and the inner wall of the outer side pipe wall of the aerobic pipe 2. The waste water in the aerobic pipe 2 flows upwards, one part of water flows through the gap between the adjacent confluence plates 22, the other part of water flows through the flow through openings 23, and the water is impacted to the lower surface of the corresponding flow distribution plate 24 right above through the flow through openings 23 to be choked, and flows transversely along the lower surface of the flow distribution plate 24, so that the part of water can be dispersed to flow to two sides and recombined with the water flowing through the gap between the adjacent confluence plates 22, thus the form of alternate longitudinal flow and cross flow of the waste water can be formed in the aerobic pipe 2, and the water disturbance is promoted. The water rising along the confluence plate 22 has a faster flow rate, which is beneficial to cement mixing, and then the sludge is also blocked by the flow distribution plate 24, does not rise at a faster speed, but is mixed with the water and the sludge on both sides again, or the sludge slides down along the outer side surface of the upright part of the confluence plate 22 and is mixed with sewage.
An overflow port is arranged at the top of the aerobic pipe 2 and is used for outputting the treated produced water. Because the aerobic pipe 2 is vertical, the upper part of the uniform diameter area 19 can play a role in precipitation, and the overflow mode is adopted to reduce the sludge loss. A sedimentation tank can be arranged outside the biochemical treatment pipe for mud-water separation, and the sludge at the bottom of the sedimentation tank is partially returned to the flow expansion area 20. The uniform diameter area 19 is connected with the anoxic inner tube 3 through a connecting tube, nitrified liquid in the aerobic tube 2 is returned to the anoxic inner tube 3, and the connecting tube is positioned on the outer tube wall of the biochemical treatment tube.
Preparation example 1
The anaerobic pipe of this preparation example has above-mentioned agitating unit (the setting of (the) stirring axle, go-between, stirring wing and drive ring is as above) and one section water conservancy diversion bellying, two sections water conservancy diversion bellying, and wherein, the height of one section water conservancy diversion bellying and two sections water conservancy diversion bellying is the same, and the ratio of the length of first protruding board protrusion anaerobic pipe inner wall to the internal diameter of anaerobic pipe is 1:6, and the ratio of the length of first protruding board protrusion anaerobic pipe inner wall to the length of second protruding board protrusion anaerobic pipe inner wall is 1:1.3, and the screw pitch of second protruding board is 1:1.1.
Preparation example 2
The anaerobic pipe of this preparation example was the same as that of preparation example 1 except that the ratio of the length of the first projecting plate projecting from the inner wall of the anaerobic pipe to the inner diameter of the anaerobic pipe was 1:4.
Preparation example 3
The anaerobic pipe of this preparation example was the same as that of preparation example 1 except that the ratio of the length of the first projecting plate projecting from the inner wall of the anaerobic pipe to the inner diameter of the anaerobic pipe was 1:7.
Preparation example 4
The anaerobic pipe of this preparation example was the same as that of preparation example 1 except that the ratio of the length of the first projecting plate projecting from the inner wall of the anaerobic pipe to the length of the second projecting plate projecting from the inner wall of the anaerobic pipe was 1:2.
Preparation example 5
The anaerobic pipe of this preparation example was the same as that of preparation example 1 except that the ratio of the length of the first projecting plate projecting from the inner wall of the anaerobic pipe to the length of the second projecting plate projecting from the inner wall of the anaerobic pipe was 1:1.2.
Preparation example 6
The anaerobic pipe of this preparation example was the same as that of preparation example 1 except that the ratio of the pitch of the threads of the second projecting plate to the pitch of the threads of the first projecting plate was 1:1.5.
Preparation example 7
The anaerobic pipe of this preparation example was the same as that of preparation example 1 except that the ratio of the pitch of the threads of the second projecting plate to the pitch of the threads of the first projecting plate was 1:1.
Preparation example 8
The anaerobic pipe of this preparation example was the same as that of preparation example 1 except that only one segment of the guide boss was provided and no two segments of the guide boss were provided.
Preparation example 9
The anaerobic pipe of this preparation example was the same as that of preparation example 1, except that neither the first-stage deflector ledge nor the second-stage deflector ledge was provided.
TABLE 1 amount of biogas discharged from exhaust pipes of preparation examples 1 to 9
。
The arrangement of the first-section guide protruding part and the second-section guide protruding part is beneficial to the biogas discharge of the anaerobic pipe, improves the safety performance of the anaerobic pipe, and is beneficial to improving the decomposition efficiency of organic pollutants in the semi-coke wastewater.
Claims (10)
1. A tubular biochemical treatment device for treating semi-coke wastewater is characterized by comprising a biochemical treatment tube with a vertical sleeve structure, wherein the biochemical treatment tube comprises an inner anaerobic tube and an outer comprehensive tube, the comprehensive tube comprises an upper aerobic tube and a lower anoxic tube, and the anoxic tube comprises an inner anoxic tube and an outer anoxic tube;
The top of the anaerobic pipe is positioned on the ground and is connected with an exhaust pipe for discharging methane generated by anaerobic treatment; the bottom of the anaerobic pipe is communicated with the bottom of the anoxic inner pipe, the top of the anoxic inner pipe is communicated with the top of the anoxic outer pipe, the bottom of the anoxic outer pipe is connected with the bottom of the aerobic pipe through the aerobic front pipe, and the aerobic front pipe is arranged outside the anoxic outer pipe; the top of the aerobic pipe is positioned on the ground, and the top of the aerobic pipe is open;
The upper middle part of the anaerobic pipe is provided with a stirring device, and the inner wall of the lower middle part is provided with at least one section of guide protruding part, so that wastewater can flow along the guide protruding part, the water pressure is reduced, and biogas discharge is facilitated.
2. The tubular biochemical treatment device for treating semi-coke wastewater according to claim 1, wherein the stirring device comprises a vertical stirring shaft and a stirring paddle, the top of the stirring shaft is fixed on the top surface of the anaerobic pipe, and the outer side surface of the stirring shaft is provided with a continuous thread groove;
The stirring rake is horizontal, including the go-between in center and the stirring vane of go-between both sides, the go-between cover is in the outside of (mixing) shaft, and the inboard of go-between has the texture of cooperation (mixing) shaft surface recess, under decurrent rivers effect, the texture of go-between inner wall cooperatees with the recess in the (mixing) shaft outside, and the go-between rotates downwards along the (mixing) shaft, drives the stirring vane simultaneously and rotates downwards, stirs the water.
3. The tubular biochemical treatment device for treating semi-coke wastewater according to claim 2, wherein a cleaning brush is arranged at one end of the stirring wing far away from the connecting ring, bristles of the cleaning brush are flexible, the bristles can contact the inner wall of the anaerobic pipe, and the cleaning brush rotates along with the stirring wing to clean the inner wall of the anaerobic pipe, so that organic dirt is prevented from adhering to the inner wall.
4. The tubular biochemical treatment device for treating semi-coke wastewater according to claim 1, wherein a first section of guide protruding part and a second section of guide protruding part are arranged on the inner wall of the middle lower part of the anaerobic pipe from top to bottom, the first section of guide protruding part comprises a first protruding plate, one side of the first protruding plate is fixed on the inner wall of the anaerobic pipe, and the other side of the first protruding plate extends to the inside of the anaerobic pipe; the whole first protruding plate is spirally, uniformly and continuously coiled from top to bottom, and the pitches of the upper adjacent threads and the lower adjacent threads are equal;
The second-section flow guiding bulge part comprises a second bulge plate, one side of the second bulge plate is fixed on the inner wall of the anaerobic pipe, and the other side extends to the inside of the anaerobic pipe; the whole second protruding plate is spirally, uniformly and continuously coiled from top to bottom, and the pitches of the upper adjacent threads and the lower adjacent threads are equal; the bottom of the first protruding plate is connected with the top of the second protruding plate.
5. The pipe type biochemical treatment device for treating semi-coke wastewater according to claim 4, wherein the first section of the guide protruding part and the second section of the guide protruding part have the same height, the ratio of the length of the first protruding plate protruding the inner wall of the anaerobic pipe to the inner diameter of the anaerobic pipe is 1 (4-6), the ratio of the length of the first protruding plate protruding the inner wall of the anaerobic pipe to the length of the second protruding plate protruding the inner wall of the anaerobic pipe is 1 (1.3-2), and the ratio of the thread pitch of the second protruding plate to the thread pitch of the first protruding plate is 1 (1.1-1.5).
6. The tubular biochemical treatment device for treating semi-coke wastewater according to claim 4, wherein an annular aeration pipe is arranged at the bottom of the anoxic inner pipe and is connected with an air supply device on the ground through an air pipe, and aeration holes are uniformly formed on the upper surface of the annular aeration pipe and the side surface facing the anoxic inner pipe and are used for inputting oxygen into the anoxic inner pipe;
The top of the anoxic tube is provided with an inclined top plate, the top of the top plate is fixed on the outer side of the anaerobic tube, and the bottom of the top plate extends outwards and is connected with the top of the outer side wall of the anoxic outer tube.
7. The tubular biochemical treatment device for treating semi-coke wastewater according to claim 1, wherein the aerobic front pipe, the anoxic pipe and the anaerobic pipe are concentrically arranged, and the outer diameter of the biochemical treatment pipe at the aerobic front pipe is equal to the outer diameter of the biochemical treatment pipe at the aerobic pipe, so that the outer wall of the biochemical treatment pipe is regular, and the construction and the installation are convenient;
The inside of the aerobic front pipe is provided with a plurality of aeration pipes I, and the aeration pipes I are connected with an external air supply device through air pipes to supplement oxygen for water flowing through the aerobic front pipe.
8. The tubular biochemical treatment device for treating semi-coke wastewater according to claim 6, wherein the aerobic tube comprises an upper uniform diameter region and a lower flow expansion region, the wall surface of the inner side of the flow expansion region is the top plate, and a plurality of aeration tubes II are uniformly arranged in the flow expansion region and are used for re-oxygenating the wastewater entering the aerobic tube;
a plurality of groups of turbulence assemblies are arranged in the uniform diameter area from bottom to top to provide turbulence for the water body in the uniform diameter area and promote the wastewater to fully contact with the aerobic activated sludge.
9. The tubular biochemical treatment device for treating semi-coke wastewater according to claim 8, wherein the turbulence assembly comprises an upper-layer flow distribution plate group and a lower-layer flow converging plate group, the flow converging plate group comprises a plurality of circles of flow converging plates which are concentrically arranged, the longitudinal section of the flow converging plates is in a shape of a Chinese character 'ji', and the top of the flow converging plates is provided with a flow through port, so that water below the flow converging plates can flow through a gap between the flow through port and an adjacent flow converging plate;
The flow distribution plate group comprises a plurality of circles of flow distribution plates which are concentrically arranged, the flow distribution plates are in a circular ring shape, the central line of each flow distribution plate and the central line of the through flow opening are positioned on the same vertical line, and water bodies passing through the through flow opening can be blocked, so that the water bodies are transversely dispersed to the two sides of the flow distribution plates and are mixed with water bodies passing through the gaps of the adjacent confluence plates again.
10. The tubular biochemical treatment device for treating semi-coke wastewater according to claim 9, wherein the confluence plate comprises an outer ring vertical plate and an inner ring vertical plate, the inner ring vertical plate is close to one side of the anaerobic pipe, the outer ring vertical plate is close to one side of the outer side wall of the biochemical treatment pipe, the bottom of the inner ring vertical plate is straight and points to the anaerobic pipe, and the bottom of the outer ring vertical plate is straight and points to the outer side of the biochemical treatment pipe; the upright parts of the outer ring vertical plate and the inner ring vertical plate are inclined plate surfaces close to each other, and the through flow opening is an annular through opening surrounding one circle of the aerobic pipe.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020094950A (en) * | 2002-12-02 | 2002-12-18 | 쌍용양회공업(주) | Method and apparatus for wastewater treatments |
| RU2010147655A (en) * | 2010-11-23 | 2012-05-27 | Борис Петрович Ленский (RU) | TWO-STAGE BIOLOGICAL SEWAGE TREATMENT STATION (OPTIONS) |
| CN108558123A (en) * | 2018-01-30 | 2018-09-21 | 常州大学 | A kind of acid azo-colour advanced waste treatment system |
| CN208829367U (en) * | 2018-08-31 | 2019-05-07 | 郝福利 | A kind of tube-type sewage water treatment and purification device |
| CN111777261A (en) * | 2020-05-28 | 2020-10-16 | 河南国威市政工程有限公司 | Unpowered sewage treatment system in high-fall environment |
| CN115028264A (en) * | 2022-06-13 | 2022-09-09 | 华南理工大学 | Preposed anoxic sludge film composite biological nitrogen and phosphorus removal reactor and sewage treatment method |
| CN117776392A (en) * | 2024-02-23 | 2024-03-29 | 中化化工科学技术研究总院有限公司 | Treatment of semi-coke wastewater hybrid multi-stage AO processing system |
-
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- 2024-04-07 CN CN202410407305.8A patent/CN117985858B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020094950A (en) * | 2002-12-02 | 2002-12-18 | 쌍용양회공업(주) | Method and apparatus for wastewater treatments |
| RU2010147655A (en) * | 2010-11-23 | 2012-05-27 | Борис Петрович Ленский (RU) | TWO-STAGE BIOLOGICAL SEWAGE TREATMENT STATION (OPTIONS) |
| CN108558123A (en) * | 2018-01-30 | 2018-09-21 | 常州大学 | A kind of acid azo-colour advanced waste treatment system |
| CN208829367U (en) * | 2018-08-31 | 2019-05-07 | 郝福利 | A kind of tube-type sewage water treatment and purification device |
| CN111777261A (en) * | 2020-05-28 | 2020-10-16 | 河南国威市政工程有限公司 | Unpowered sewage treatment system in high-fall environment |
| CN115028264A (en) * | 2022-06-13 | 2022-09-09 | 华南理工大学 | Preposed anoxic sludge film composite biological nitrogen and phosphorus removal reactor and sewage treatment method |
| CN117776392A (en) * | 2024-02-23 | 2024-03-29 | 中化化工科学技术研究总院有限公司 | Treatment of semi-coke wastewater hybrid multi-stage AO processing system |
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