CN116675371B - Integrated device and process for treating high COD sewage by free radical oxidation - Google Patents
Integrated device and process for treating high COD sewage by free radical oxidation Download PDFInfo
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- CN116675371B CN116675371B CN202310650380.2A CN202310650380A CN116675371B CN 116675371 B CN116675371 B CN 116675371B CN 202310650380 A CN202310650380 A CN 202310650380A CN 116675371 B CN116675371 B CN 116675371B
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- 239000010865 sewage Substances 0.000 title claims abstract description 90
- 150000003254 radicals Chemical class 0.000 title claims abstract description 50
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 32
- 230000003647 oxidation Effects 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 11
- 230000008569 process Effects 0.000 title claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 68
- 238000006243 chemical reaction Methods 0.000 claims abstract description 41
- 239000011229 interlayer Substances 0.000 claims abstract description 30
- 239000012528 membrane Substances 0.000 claims abstract description 24
- 239000007788 liquid Substances 0.000 claims abstract description 22
- 238000000926 separation method Methods 0.000 claims abstract description 6
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 4
- 239000010959 steel Substances 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims description 46
- 239000003054 catalyst Substances 0.000 claims description 27
- 238000001179 sorption measurement Methods 0.000 claims description 27
- 238000002347 injection Methods 0.000 claims description 19
- 239000007924 injection Substances 0.000 claims description 19
- 238000005086 pumping Methods 0.000 claims description 10
- 238000005507 spraying Methods 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims 1
- 230000036632 reaction speed Effects 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 18
- 230000000694 effects Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000005192 partition Methods 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000007800 oxidant agent Substances 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000013019 agitation Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 238000005485 electric heating Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 238000009279 wet oxidation reaction Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 238000004804 winding 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
- 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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
-
- 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
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
-
- 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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
- C02F2305/023—Reactive oxygen species, singlet oxygen, OH radical
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The application discloses an integrated device and a process for treating high COD sewage by free radical oxidation, which relate to the technical field of sewage treatment and comprise a filter, an evaporator, a sewage buffer tank, a liquid pump, an air pump, a free radical generator, a condenser and a high-pressure separation tank; the free radical generator comprises an outer shell and a tubular membrane group; the tubular membrane group comprises an outer tube body, an inner tube body, an interlayer tube body and a tube body shifting assembly; the outer pipe body and the inner pipe body are rubber pipes and are respectively densely provided with conveying holes and jet holes; the jet holes are in one-to-one correspondence with the conveying holes; the interlayer pipe body is positioned between the outer pipe body and the inner pipe body, is positioned on the outer shell body, is a hose woven by steel wires, and is densely provided with water through holes which are in one-to-one correspondence with the conveying holes; the pipe body shifting assembly is used for driving the interlayer pipe body to axially move; the integrated device for treating the high COD sewage by the free radical oxidation has the advantages of high reaction speed and uniform reaction when in oxidation reaction.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to an integrated device and process for treating high COD sewage by free radical oxidation.
Background
In the prior art, a tubular free radical oxidation method is generally used for treating high COD sewage, wherein the tubular free radical oxidation is to take oxygen-enriched gas or oxygen as an oxidant at a certain temperature and pressure, and the catalysis effect of a catalyst is utilized to accelerate the respiration reaction between organic matters in the wastewater and the oxidant, SO that the organic matters in the wastewater and toxic matters containing N, S and the like are oxidized into CO2, N2, SO2 and H2O, and the aim of purification is fulfilled; the tubular reactor adopted in the existing reaction is generally characterized in that sewage and air are directly pumped into a liquid inlet and an air inlet of a tank body of the reactor, and the sewage and the air are generally concentrated at part of positions after entering, so that the reaction effect is affected, the liquid and the air are not uniformly dispersed, and the overall reaction efficiency is affected.
Disclosure of Invention
According to the integrated device for treating high COD sewage through free radical oxidation, the technical problems that in the prior art, the liquid inlet position and the gas inlet position of the device for treating high COD sewage through free radical oxidation are single, so that the reaction efficiency is relatively low are solved, and when the integrated device for treating high COD sewage through free radical oxidation carries out oxidation reaction, the reaction speed is high and the reaction is carried out uniformly are solved.
The embodiment of the application provides an integrated device for treating high COD sewage by free radical oxidation, which comprises a filter, an evaporator, a sewage buffer tank, a liquid pump, an air pump, a free radical generator, a condenser and a high-pressure separation tank; the free radical generator comprises an outer shell, a power assembly and a control unit; the top of the outer shell is provided with a liquid pump inlet, a storage inlet and an exhaust outlet, and the bottom of the outer shell is provided with a water conveying pipeline, an output port and a water outlet; the free radical generator also comprises a tubular membrane group;
the tubular membrane group comprises an outer pipe body, an inner pipe body, an interlayer pipe body and a pipe body shifting assembly;
the outer pipe body and the inner pipe body are rubber pipes and are respectively densely provided with conveying holes and jet holes, and the top and the bottom are respectively fixed on the inner top and the inner bottom of the outer shell; the outer tube body divides the space inside the outer shell into a reaction space and a tubular space; the distance between the inner pipe body and the outer pipe body is less than 2 cm; the jet holes are in one-to-one correspondence with the conveying holes;
the interlayer pipe body is positioned between the outer pipe body and the inner pipe body, is positioned on the outer pipe body, is a hose woven by steel wires, has the length of 0.93 to 0.95 times that of the inner pipe body, and is densely provided with water through holes which are in one-to-one correspondence with the conveying holes;
the pipe body shifting assembly is used for driving the interlayer pipe body to axially move, so that the injection hole and the conveying hole are communicated as required.
Further, the outer pipe body and the inner pipe body are detachably fixed on the outer shell.
Further, the pipe body shifting assembly comprises a pulling rope, a rope body pulling assembly and a reversing wheel;
the rope body dragging assembly and the reversing wheel are respectively positioned at the top and the bottom of the outer shell and are respectively used for driving the dragging rope to move and guiding the movement of the dragging rope; one or more pulling ropes are arranged, one end of each pulling rope is fixed at the top of the interlayer pipe body, the other end of each pulling rope is fixed at the bottom of the interlayer pipe body, and the pulling ropes are always clung to the rope body pulling assembly and the reversing wheel; the rope body dragging assembly is of a motor-driven winding drum structure.
Preferably, the water stirring device further comprises a water stirring assembly, wherein the water stirring assembly comprises a water stirring pipe;
the stirring pipes are elastic rubber pipes and are transversely arranged, the number of the stirring pipes is multiple, and both ends of the stirring pipes are fixed on the side wall of the inner pipe body; the water stirring pipe is hermetically provided with a water permeable hole, and the water permeable hole is a through hole and plays a role in spraying sewage and/or air;
the water stirring pipe is internally provided with a built-in soft column which is a rubber elastic column-shaped bag, and both ends of the built-in soft column are fixed on the side wall of the inner pipe body; the space between the stirring pipe and the built-in soft column is tubular; the jet hole of one part of the inner pipe body is communicated with the space between the stirring pipe and the built-in soft column;
five or more division bars are fixed on the outer side wall of the built-in soft column, the division bars are soft bars made of rubber, the length of the division bars is the same as that of the stirring pipe, the division bars are uniformly distributed on the outer side wall of the built-in soft column, and the function of blocking the water permeable holes when the built-in soft column is expanded is achieved;
the built-in soft column is filled with gas, the change of the gas quantity in the built-in soft column is controlled by a suction gas component, and the suction gas component is a combination of a pump body and a valve body and is controlled by a control unit to operate.
Preferably, the pulling rope is provided with a rope length adjusting rod, the rope length adjusting rod is of a telescopic rod structure and is fixed on the pulling rope, the pulling rope is in a straightened state when the pulling rope is contracted, and the pulling rope is in a loose state when the pulling rope is extended;
the catalyst in the sewage reaction space is arranged in a catalyst storage tube, the catalyst storage tube is a netlike tube body, and adsorption magnets are densely distributed on the catalyst storage tube;
the adsorption magnet is a permanent magnet block; magnet blocks are densely distributed on the inner pipe body, and the adsorption magnet and the magnet blocks are attracted mutually;
normally, a part of the catalyst storage tube is fixed on the inner tube body through an adsorption magnet.
Further, when the stirring pipe is expanded and contracted, the tubular membrane group is brought to deform simultaneously, so that sewage is stirred to flow.
Preferably, a plurality of limiting and pulling ropes are arranged in the tubular space, each limiting and pulling rope is an elastic rope, one end of each limiting and pulling rope is fixed on the inner wall of the outer shell, the other end of each limiting and pulling rope is fixed on the side wall of the outer shell, and the limiting and pulling ropes are transversely arranged and used for limiting the expansion amount of the tubular membrane group.
Preferably, the elasticity of the plurality of limit pulling ropes is different.
Preferably, the limiting and pulling rope is formed by combining two rope bodies, the end parts of the two rope bodies, which are not fixed on the outer shell and the tubular film group, are fixedly provided with positioning adsorption blocks, the two positioning adsorption blocks are symmetrically arranged and are clung together, the two positioning adsorption blocks are magnet blocks, and rope placing holes are formed in the clung surfaces of the positioning adsorption blocks; the rope placing holes are internally provided with connecting elastic ropes, and two ends of each connecting elastic rope are respectively fixed on the two rope placing holes; the elasticity of the connecting elastic rope is smaller than that of the limiting pulling rope.
One or more technical solutions provided in the embodiments of the present application at least have the following technical effects or advantages:
the device solves the technical problems that in the prior art, the liquid inlet position and the air inlet position of the device for treating high COD sewage by free radical oxidation are single, so that the reaction efficiency is relatively low, and the technical effects of high reaction speed and relatively uniform reaction progress are realized when the integrated device for treating high COD sewage by free radical oxidation performs oxidation reaction.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a free radical generator;
FIG. 2 is a schematic view of a tubular membrane module;
FIG. 3 is a schematic diagram of the positional relationship of a sandwich tube and a tube displacement assembly;
FIG. 4 is a schematic view of a tubular membrane module;
FIG. 5 is a flow chart of a wastewater treatment process;
FIG. 6 is a schematic view of the positional relationship of the water stirring assembly and the tubular membrane module;
FIG. 7 is a schematic diagram of the structure of the water stirring pipe after swelling;
FIG. 8 is a schematic view of the internal structure of the stirring pipe;
FIG. 9 is a cross-sectional view of a water stirring tube;
FIG. 10 is a schematic diagram of the positional relationship of a rope length adjustment lever and a pulling rope;
FIG. 11 is a schematic view of the positional relationship between the spacing drag rope and the tubular membrane module and the outer housing;
FIG. 12 is a schematic view of a catalyst storage tube;
FIG. 13 is a schematic diagram showing the combination of the positioning and adsorbing blocks on the limiting pull rope.
In the figure:
filter 001, evaporator 002, sewage buffer tank 003, liquid pump 004, air pump 005, radical generator 006, condenser 007, high pressure separator tank 008, catalyst storage tube 009, adsorption magnet 091, outer housing 100, liquid pump inlet 110, storage port 120, exhaust port 130, water pipe 140, output port 150, drain port 160, tubular membrane module 200, outer housing 210, delivery port 211, inner housing 220, injection port 221, sandwich tube 230, water passage 231, tube displacement assembly 240, pull cord 241, cord pulling assembly 242, reversing wheel 243, cord length adjustment bar 244, tubular space 250, agitation assembly 300, agitation tube 310, water passage 311, internal flexible column 320, spacer 330, pumping space 340, in-column space 350, spacing pull cord 400, positioning adsorption block 410, cord placement hole 420, connecting elastic cord 430.
Detailed Description
In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings; the preferred embodiments of the present invention are illustrated in the drawings, however, the present invention may be embodied in many different forms and is not limited to the embodiments described herein; rather, these embodiments are provided so that this disclosure will be thorough and complete.
It should be noted that the terms "vertical", "horizontal", "upper", "lower", "left", "right", and the like are used herein for illustrative purposes only and do not represent the only embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs; the terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention; the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Example 1
As shown in fig. 1 to 4, the integrated device for treating high COD sewage by free radical oxidation of the present application comprises a filter 001, an evaporator 002, a sewage buffer tank 003, a liquid pump 004, an air pump 005 provided with a valve body, a free radical generator 006, a catalyst located in the free radical generator 006, a condenser 007, and a high pressure separation tank 008.
The free radical generator 006 is used for providing space for carrying out oxidation reaction, and comprises an outer shell 100, a tubular membrane group 200, a power component and a control unit;
the outer shell 100 is hollow and cylindrical, and has a bearing function, the top end surface is provided with a liquid pump inlet 110 for pumping filtered sewage, a storage port 120 for facilitating the catalyst to be placed in the outer shell 100 and an exhaust port 130 for exhausting gas in the outer shell 100, and the bottom is provided with a water pipe 140 for conveying the sewage, an output port 150 for facilitating the catalyst in the outer shell 100 to be taken out and a water outlet 160 for exhausting the treated sewage; the temperature adjusting component for adjusting the temperature of the sewage in the outer shell 100 is arranged in the outer shell 100, and the temperature adjusting component is preferably an electric heating wire or an electric heating rod;
the exhaust port 130, the water pipe 140 and the water outlet 160 are respectively provided with a valve body for controlling the opening and the closing, and the valve bodies are controlled by a control unit;
the tubular membrane assembly 200 includes an outer tube 210, an inner tube 220, a sandwich tube 230, and a tube displacement assembly 240;
the outer tube 210 is a rubber tube, the length of the outer tube is 1 to 1.3 times of that of the outer tube 100, the top and the bottom are respectively fixed on the inner top and the inner bottom of the outer tube 100, and the space inside the outer tube 100 is divided into two parts, namely a reaction space and a tubular space 250; the reaction space is cylindrical, and the tubular space 250 is tubular as a whole; the outer tube 210 is densely provided with conveying holes 211, and the conveying holes 211 are through holes;
the inner pipe 220 is a rubber pipe, is positioned in the reaction space and has the same length as the outer pipe (210), and the top and the bottom are respectively fixed on the inner top and the inner bottom of the outer casing 100; the spacing between the inner tube 220 and the outer tube 210 is less than 2 cm; the inner pipe 220 is densely provided with injection holes 221, and the injection holes 221 are in one-to-one correspondence with the conveying holes 211;
the interlayer pipe body 230 is located between the outer pipe body 210 and the inner pipe body 220, the axis of the interlayer pipe body is coincident with that of the inner pipe body 220, and the interlayer pipe body is positioned on the outer casing 100 and is a hose woven by steel wires; the length of the interlayer pipe body 230 is 0.93 to 0.95 times of that of the inner pipe body 220, and water through holes 231 are densely distributed on the interlayer pipe body 230, and the water through holes 231 are in one-to-one correspondence with the conveying holes 211;
the tube body displacement assembly 240 is used for driving the interlayer tube body 230 to axially move, so that the injection hole 221 and the conveying hole 211 are communicated as required; the pipe body shifting assembly 240 comprises a pulling rope 241, a rope body pulling assembly 242 and a reversing wheel 243; the rope body dragging assembly 242 and the reversing wheel 243 are respectively positioned at the top and the bottom of the outer shell 100 and are respectively used for driving the dragging rope 241 to move and guiding the movement of the dragging rope 241; the number of the pulling ropes 241 is one or more, one end of the pulling ropes is fixed at the top of the interlayer pipe body 230, the other end of the pulling ropes is fixed at the bottom of the interlayer pipe body 230, and the pulling ropes are always clung to the rope body pulling assembly 242 and the reversing wheel 243; the rope pulling assembly 242 is preferably a motor driven reel structure;
the space other than the space between the outer tube body 210 and the inner tube body 220 in the reaction space is a sewage reaction space for reacting sewage; the liquid pump inlet 110 is communicated with the tubular space 250, and the storage port 120 and the exhaust port 130 are positioned at the top of the sewage reaction space and are communicated with the sewage reaction space; the water pipe 140 communicates the sewage reaction space with the tubular space 250; the outlet 150 and the drain 160 are both positioned at the bottom of the sewage reaction space.
Further, the outer tube 210 and the inner tube 220 are detachably fixed to the outer housing 100.
Preferably, the outer tube 210 and the inner tube 220 are made of corrosion-resistant rubber.
The power assembly is used for providing power for the operation of each component of the free radical generator 006, and the control unit plays a role in controlling the coordinated operation of each component of the free radical generator 006, which are all in the prior art and are not described herein.
Preferably, the control unit is a combination of a programmable logic controller and a control key.
Preferably, the catalyst is spherical or cylindrical.
In the sewage treatment, as shown in fig. 5, the catalyst is pre-loaded in the radical generator 006, and the process steps are as follows:
1. the sewage is first passed through a filter 001 to remove large solid particles;
2. filtering, concentrating in an evaporator 002, and introducing into a sewage buffer tank 003;
the sewage is pumped into the tubular space 250 of the free radical generator 006 by the liquid pump 004, and the outer pipe body 210 and the inner pipe body 220 are both clung to the interlayer pipe body 230 (the delivery hole 211 and the injection hole 221 are misplaced and are not communicated with each other at this time);
the interlayer pipe 230 is shifted under the driving of the pipe shifting assembly 240, so that the conveying hole 211 is communicated with the injection hole 221;
the control water pipe 140 is kept through; part of the sewage is transferred from the tubular space 250 to the sewage reaction space through the water transfer pipe 140, and part of the sewage is injected into the sewage reaction space through the injection hole 221;
3. the liquid pump 004 is controlled to stop running, the interlayer pipe body 230 is driven by the pipe body shifting assembly 240 to shift, so that the conveying hole 211 is not communicated with the injection hole 221 any more; the operation of the air pump 005 is controlled, and the liquid in the tubular space 250 is completely sent into the sewage reaction space through the water pipe 140 under the influence of air pressure; a closed water pipe 140;
4. regulating the pressure and temperature environment in the sewage reaction space, and delivering high-pressure air to the free radical generator 006; the control interlayer pipe 230 is shifted under the driving of the pipe shifting component 240, so that the conveying hole 211 is communicated with the injection hole 221; at this time, high-pressure gas is injected into sewage in the sewage treatment space through the injection hole 221 to participate in the reaction (the sewage to be treated in the free radical generator 006 and air are subjected to wet oxidation reaction under the action of a catalyst, macromolecular organic matters in the sewage are oxidized and decomposed by a strong oxidant, double bonds in an organic matter structure are broken, macromolecules are oxidized into micromolecules, and the micromolecules are further oxidized into carbon dioxide and water, so that COD is greatly reduced);
5. the purified sewage flows into the condenser 007 through the drain 160 of the radical generator 006, is cooled, and then enters the high pressure separation tank 008, and the uncondensed gas is discharged through the exhaust 130.
The technical scheme in the embodiment of the application at least has the following technical effects or advantages:
the device solves the technical problems that in the prior art, the liquid inlet position and the air inlet position of the device for treating high COD sewage by free radical oxidation are single, so that the reaction efficiency is relatively low, and the technical effects of high reaction speed and relatively uniform reaction progress are realized when the integrated device for treating high COD sewage by free radical oxidation performs oxidation reaction.
Example two
In order to further improve the contact rate of sewage, catalyst and oxygen, and then further improve sewage treatment efficiency, the embodiment of the application has add on the basis of the above-mentioned embodiment and has stirred water subassembly 300, utilizes the harmomegathus stirring rivers of hose and then further improves reaction efficiency, specifically:
as shown in fig. 6 to 9, the water stirring assembly 300 includes a water stirring pipe 310, wherein the water stirring pipe 310 is a rubber elastic pipe, and is transversely arranged in a plurality of numbers, and both ends of the water stirring pipe are fixed on the side wall of the inner pipe 220; the water stirring pipe 310 is sealed with a water permeable hole 311, and the water permeable hole 311 is a through hole, so as to play a role in spraying sewage and/or air (when the spraying hole 221 sprays water or air, a part of the water enters the water stirring pipe 310 and is sprayed out from the water permeable hole 311); the stirring pipe 310 is internally provided with a built-in soft column 320, the built-in soft column 320 is a rubber elastic column-shaped bag, and both ends of the built-in soft column 320 are fixed on the side wall of the inner pipe 220; the space between the stirring pipe 310 and the built-in soft column 320 is in a pipe shape; the injection hole 221 at the upper part of the inner pipe 220 is communicated with the space between the stirring pipe 310 and the built-in soft column 320; for convenience of description, the space between the water stirring tube 310 and the built-in soft column 320 is defined herein as a pumping space 340, and the space inside the built-in soft column 320 is defined as an in-column space 350;
five or more partition strips 330 are fixed on the outer side wall of the built-in soft column 320, the partition strips 330 are soft strips made of rubber, the length of the partition strips is the same as that of the stirring pipe 310, and the partition strips are uniformly distributed on the outer side wall of the built-in soft column 320, so that the function of blocking the water permeable holes 311 when the built-in soft column 320 swells is achieved;
the built-in soft column 320 is filled with gas, the change of the gas quantity in the built-in soft column is controlled by the pumping gas component 360, the pumping gas component 360 is a combination of a pump body and a valve body, and the operation of the control unit is controlled.
Further, one of the pumping gas assemblies 360 corresponds to a plurality of column spaces 350.
Preferably, the suction air assembly 360 is the same assembly as the air pump 005.
In the actual use process of the water stirring assembly 300, when wet oxidation reaction is performed, the suction gas assembly 360 operates and controls the built-in soft column 320 to expand and contract, so that the water stirring pipe 310 is gradually deformed from a tubular shape to be approximately elliptical, then gradually reduced and reset, and the sewage is circularly stirred to flow; at the same time, the water permeable holes 311 on the stirring pipe 310 spray air flow into the sewage (the direction of the air flow changes along with the deformation of the stirring pipe 310), so as to accelerate the reaction.
In order to further enhance the reaction rate, as shown in fig. 10, it is preferable that the outer tube 210 and the inner tube 220 are both elastic tubes; the pulling rope 241 is provided with a rope length adjusting rod 244, the rope length adjusting rod 244 is of a telescopic rod structure and is fixed on the pulling rope 241, the pulling rope 241 is in a straightened state when being contracted, and the pulling rope 241 is in a loose state when being extended; the catalyst in the sewage reaction space is arranged in the catalyst storage tube 009, the catalyst storage tube 009 is a net-shaped tube body, and the adsorption magnets 091 are densely distributed on the catalyst storage tube 009; the adsorption magnet 091 is a permanent magnet block; magnet blocks are densely distributed on the inner pipe 220, and the adsorption magnet 091 and the magnet blocks are attracted mutually; normally, a part of the catalyst storage tube 009 is fixed to the inner tube 220 by the adsorption magnet 091; in a state where the pulling rope 241 is relaxed, the amount by which the tubular film assembly 200 can deform increases (the tubular film assembly 200 is restricted by the interlayer pipe body 230 when the pulling rope 241 is in a straightened state); so that the tubular membrane assembly 200 can agitate the sewage in the sewage reaction space and drive the catalyst storage tube 009 to displace during sewage treatment, thereby obtaining a better contact effect.
Preferably, when the stirring pipe 310 is expanded and contracted, the tubular membrane assembly 200 is driven (pulled) to deform simultaneously, so as to stir the sewage flow.
As shown in fig. 11 and 12, in order to limit (control) the expansion shape of the tubular membrane assembly 200 and further avoid the situation that the local expansion amount of the tubular membrane assembly 200 is large and the expansion amount of other parts is small (the gas and the liquid are influenced to be ejected from the ejection hole 221) due to the influence of the air pressure and the water pressure, it is preferable that a plurality of limiting and pulling ropes 400 are provided in the tubular space 250, one end of each limiting and pulling rope 400 is an elastic rope, and the other end is fixed on the inner wall of the outer casing 100, and the other end is fixed on the side wall of the outer casing 210, and is transversely arranged to limit the expansion amount of the tubular membrane assembly 200.
Preferably, the elastic forces of the plurality of limiting and pulling ropes 400 are different, and the expansion shape of the tubular film group 200 can be limited by the elastic forces of the limiting and pulling ropes 400.
Preferably, in order to further enhance the reaction rate, the stirred sewage flows in the sewage reaction space, preferably, as shown in fig. 13, one limiting and pulling rope 400 is formed by combining two ropes, the end parts of the two ropes, which are not fixed on the outer shell 100 and the tubular membrane group 200, are fixed with positioning adsorption blocks 410, the number of the positioning adsorption blocks 410 is two, the positioning adsorption blocks are symmetrically arranged and are closely attached together, and rope placing holes 420 are formed in the surface of the positioning adsorption blocks 410, which are closely attached together; a connecting elastic rope 430 is arranged in the rope placing holes 420, and two ends of the connecting elastic rope 430 are respectively fixed on the two rope placing holes 420; the elastic force of the connecting elastic rope 430 is smaller than that of the limit pulling rope 400; in practical use, with the increase of the gas amount in the tubular space 250, the positioning adsorption blocks 410 adsorbed together are separated under the action of the elastic force, so that the tubular membrane group 200 is deformed greatly in a short time locally, and the impact water flow only achieves better contact effect of water, gas and catalyst.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An integrated device for treating high COD sewage by free radical oxidation comprises a filter (001), an evaporator (002), a sewage buffer tank (003), a liquid pump (004), an air pump (005), a free radical generator (006), a condenser (007) and a high-pressure separation tank (008); the free radical generator (006) comprises an outer housing (100), a power assembly and a control unit; the top of the outer shell (100) is provided with a liquid pump inlet (110), a storage port (120) and an exhaust port (130), and the bottom is provided with a water conveying pipeline (140), an output port (150) and a water outlet (160); the method is characterized in that: the free radical generator (006) also includes a tubular membrane module (200);
the tubular membrane group (200) comprises an outer tube body (210), an inner tube body (220), an interlayer tube body (230) and a tube body shifting assembly (240); the outer pipe body (210) and the inner pipe body (220) are rubber pipes, conveying holes (211) and injection holes (221) are densely distributed respectively, and the top and the bottom are respectively fixed on the inner top and the inner bottom of the outer shell (100); the outer tube body (210) divides the space inside the outer tube body (100) into a reaction space and a tubular space (250); the distance between the inner tube body (220) and the outer tube body (210) is less than 2 cm; the injection holes (221) are in one-to-one correspondence with the conveying holes (211);
the interlayer pipe body (230) is positioned between the outer pipe body (210) and the inner pipe body (220), positioned on the outer pipe body (100) and is a hose woven by steel wires, the length of the hose is 0.93 to 0.95 times of that of the inner pipe body (220), water through holes (231) are densely distributed on the hose, and the water through holes (231) correspond to the conveying holes (211) one by one;
the pipe body shifting assembly (240) is used for driving the interlayer pipe body (230) to axially move, so that the injection hole (221) and the conveying hole (211) are communicated as required.
2. The integrated device for treating high-COD sewage by free radical oxidation according to claim 1, wherein the integrated device comprises: the outer tube body (210) and the inner tube body (220) are detachably fixed on the outer shell body (100).
3. The integrated device for treating high-COD sewage by free radical oxidation according to claim 1, wherein the integrated device comprises: the pipe body shifting assembly (240) comprises a pulling rope (241), a rope body pulling assembly (242) and a reversing wheel (243);
the rope body dragging assembly (242) and the reversing wheel (243) are respectively positioned at the top and the bottom of the outer shell (100) and are respectively used for driving the dragging rope (241) to move and guiding the movement of the dragging rope (241); the number of the pulling ropes (241) is one or more, one end of the pulling ropes is fixed at the top of the interlayer pipe body (230), the other end of the pulling ropes is fixed at the bottom of the interlayer pipe body (230), and the pulling ropes are always clung to the rope body pulling assembly (242) and the reversing wheel (243); the rope dragging assembly (242) is of a motor-driven reel structure.
4. The integrated device for treating high-COD sewage by free radical oxidation according to claim 1, wherein the integrated device comprises: the water stirring device also comprises a water stirring assembly (300), wherein the water stirring assembly (300) comprises a water stirring pipe (310);
the stirring pipes (310) are elastic pipes made of rubber materials, are transversely arranged, are multiple in number, and are fixed on the side wall of the inner pipe body (220) at two ends; the water stirring pipe (310) is hermetically provided with a water permeable hole (311), and the water permeable hole (311) is a through hole and plays a role in spraying sewage and/or air;
a built-in soft column (320) is arranged in the stirring pipe (310), the built-in soft column (320) is a rubber elastic column-shaped bag, and both ends of the built-in soft column are fixed on the side wall of the inner pipe body (220); the space between the stirring pipe (310) and the built-in soft column (320) is in a pipe shape; the jet hole (221) of a part of the inner pipe body (220) is communicated with the space between the stirring pipe (310) and the built-in soft column (320);
five or more parting strips (330) are fixed on the outer side wall of the built-in soft column (320), the parting strips (330) are soft strips made of rubber, the length of each parting strip is the same as that of the stirring pipe (310), and the parting strips are uniformly distributed on the outer side wall of the built-in soft column (320) to play a role in preventing the water permeable holes (311) from being blocked when the built-in soft column (320) expands;
the built-in soft column (320) is filled with gas, the change of the gas quantity in the built-in soft column is controlled by the pumping gas component (360), the pumping gas component (360) is a combination of a pump body and a valve body, and the pumping gas component is controlled by the operation of a control unit.
5. An integrated device for treating high COD sewage by free radical oxidation as claimed in claim 3, wherein: the pulling rope (241) is provided with a rope length adjusting rod (244), the rope length adjusting rod (244) is of a telescopic rod structure and is fixed on the pulling rope (241), the pulling rope (241) is in a stretched state when the pulling rope is contracted, and the pulling rope (241) is in a loose state when the pulling rope is extended;
the catalyst in the sewage reaction space is arranged in a catalyst storage tube (009), the catalyst storage tube (009) is a net-shaped tube body, and adsorption magnets (091) are densely distributed on the catalyst storage tube;
the adsorption magnet (091) is a permanent magnet block; magnet blocks are densely distributed on the inner pipe body (220), and the adsorption magnet (091) and the magnet blocks are mutually attracted;
normally, a part of the catalyst storage tube (009) is fixed to the inner tube body (220) by means of an adsorption magnet (091).
6. The integrated device for treating high-COD sewage by free radical oxidation according to claim 4, wherein: when the stirring pipe (310) is expanded and contracted, the tubular membrane group (200) is brought to deform simultaneously, so that sewage flow is stirred.
7. The integrated device for treating high-COD sewage by free radical oxidation according to claim 3 or 4, wherein the integrated device comprises: the tubular space (250) is internally provided with a plurality of limiting and pulling ropes (400), the limiting and pulling ropes (400) are elastic ropes, one ends of the limiting and pulling ropes are fixed on the inner wall of the outer shell (100), the other ends of the limiting and pulling ropes are fixed on the side wall of the outer tube (210), and the limiting and pulling ropes are transversely arranged and used for limiting the expansion amount of the tubular membrane group (200).
8. The integrated device for treating high-COD sewage by free radical oxidation according to claim 7, wherein: the elasticity of the plurality of limit pulling ropes (400) is different.
9. The integrated device for treating high-COD sewage by free radical oxidation according to claim 8, wherein: the limiting and pulling rope (400) is formed by combining two rope bodies, positioning adsorption blocks (410) are fixed at the end parts of the two rope bodies, which are not fixed on the outer shell (100) and the tubular film group (200), the two positioning adsorption blocks (410) are symmetrically arranged and are clung together, the two positioning adsorption blocks are magnet blocks, and rope placing holes (420) are formed in the clung surfaces of the positioning adsorption blocks (410); a connecting elastic rope (430) is arranged in the rope placing holes (420), and two ends of the connecting elastic rope (430) are respectively fixed on the two rope placing holes (420); the elasticity of the connecting elastic rope (430) is smaller than that of the limiting pulling rope (400).
10. A process for treating high COD sewage by free radical oxidation is characterized in that: the integrated device for treating high COD sewage by free radical oxidation according to claim 1 comprises the following process steps in sequence:
1) The sewage is firstly passed through a filter (001) to remove large solid particles;
2) Filtering, concentrating by an evaporator (002), and introducing into a sewage buffer tank (003);
pumping the sewage into a tubular space (250) of the free radical generator (006) through a liquid pump (004), wherein the outer pipe body (210) and the inner pipe body (220) are tightly attached to the interlayer pipe body (230);
the interlayer pipe body (230) is driven by the pipe body shifting component (240) to shift, so that the conveying hole (211) is communicated with the injection hole (221);
the control water pipe (140) is communicated;
part of sewage is conveyed from the tubular space (250) to the sewage reaction space through the water conveying pipeline (140), and part of sewage is injected into the sewage reaction space through the injection hole (221);
3) The liquid pump (004) is controlled to stop running, the interlayer pipe body (230) is driven by the pipe body shifting assembly (240) to shift, so that the conveying hole (211) is not communicated with the injection hole (221);
controlling the air pump (005) to operate, and completely conveying the liquid in the tubular space (250) into the sewage reaction space through the water conveying pipeline (140) under the influence of air pressure;
a closed water pipe (140);
4) Regulating the pressure and temperature environment in the sewage reaction space, and conveying high-pressure air into the free radical generator (006);
the interlayer pipe body (230) is controlled to shift under the drive of the pipe body shifting component (240), so that the conveying hole (211) is communicated with the injection hole (221);
at the moment, high-pressure gas is sprayed into sewage in the sewage treatment space through the spray hole (221) to participate in the reaction;
5) Purified sewage flows into a condenser (007) through a water outlet (160) of the free radical generator (006) to be cooled, and then enters a high-pressure separation tank (008), and uncondensed gas is discharged through an exhaust port (130).
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