CN108689475A - Fenton oxidation baffled reactor and method for processing organic wastewater - Google Patents
Fenton oxidation baffled reactor and method for processing organic wastewater Download PDFInfo
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- CN108689475A CN108689475A CN201810708619.6A CN201810708619A CN108689475A CN 108689475 A CN108689475 A CN 108689475A CN 201810708619 A CN201810708619 A CN 201810708619A CN 108689475 A CN108689475 A CN 108689475A
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- 239000002351 wastewater Substances 0.000 title claims abstract description 66
- 230000003647 oxidation Effects 0.000 title claims abstract description 23
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 23
- 238000012545 processing Methods 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims abstract description 78
- 239000003814 drug Substances 0.000 claims abstract description 54
- 238000003756 stirring Methods 0.000 claims abstract description 6
- 238000005276 aerator Methods 0.000 claims abstract description 5
- 239000010786 composite waste Substances 0.000 claims abstract description 5
- 238000001914 filtration Methods 0.000 claims abstract description 5
- 230000006835 compression Effects 0.000 claims abstract description 3
- 238000007906 compression Methods 0.000 claims abstract description 3
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- 239000007789 gas Substances 0.000 claims description 15
- 238000005273 aeration Methods 0.000 claims description 11
- 239000002245 particle Substances 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 3
- 238000013461 design Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 1
- 230000001095 motoneuron effect Effects 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 21
- 238000005516 engineering process Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 9
- 239000007787 solid Substances 0.000 description 6
- 230000003068 static effect Effects 0.000 description 6
- 238000003860 storage Methods 0.000 description 6
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000005755 formation reaction Methods 0.000 description 3
- -1 hydroxyl radical free radical Chemical class 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000010815 organic waste Substances 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000010812 mixed waste Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000008542 thermal sensitivity Effects 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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
-
- 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
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/007—Modular design
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The present invention relates to Fenton oxidation baffled reactor and method for processing organic wastewater, the Fenton oxidation baffled reactor, the medicament mixed zone set gradually from inside to outside by concentric sleeve and deflector type reaction zone, four pipe interfaces form, wherein waterwater entrance is arranged in area of bottom centre, series of compression air interface is arranged in reaction zone bottom, far from setting discharge outlet and exhaust outlet at center.Method for processing organic wastewater:Waste water quantitatively adds FeSO by metering pump through ejector successively after filtering, adjusting pH, in inlet pipeline4Solution and H2O2Solution opens aerator into reactor, composite waste enters medicament mixed zone in a manner of tangential admission, under stirring motor effect, is streamed along the upward rapid spiral of cylinder inner wall, fin baffle is further exacerbated by disturbance and the turbulent flow of waste water, and waste water is promoted to be mixed with the uniform of medicament;In deflector type reaction zone, composite waste is passed through with the pattern of laminar flow, and carries out quick Fenton's reaction, through downflow weir outflow reactor.
Description
Technical field
The invention belongs to organic waste water treating device more particularly to a kind of Fenton oxidation baffled reactors and organic wastewater
Processing method.
Background technology
Fenton oxidation technology as a kind of high-level oxidation technology, can effective degradation of organic substances, thus be widely used in work
In the pre-treatment of industry sewage, biochemical tailrace advanced processing.Its basic principle is under the condition of suitable pH, to utilize Fe2+ catalysis
Effect, H2O2The hydroxyl radical free radical (OH) with high reaction activity is generated, OH can be acted on most of organic matters makes its drop
Solution, while the Fe that Fenton's reaction generates3+ coagulating sedimentation is generated, large amount of organic is can remove, to effectively reduce COD in waste water,
Traditional Fenton's reaction pond, medicament, which relies primarily on, manually to be added, and mixed effect is poor, and medicament utilization rate is low, and reaction rate is uncontrollable,
Reaction time more than several hours, seriously affects treatment effeciency, and high labor cost.The Fenton's reaction time is controlled, medicine is improved
Agent utilization rate is technology pain spot urgently to be resolved hurrily..
To further increase the treatment effeciency of Fenton technology, people couple by technology, it is proposed that electricity-Fenton, ultraviolet
The classes Fenton technology such as light-Fenton, ultrasonic wave-Fenton.Class Fenton technology is by additional different process conditions, in specific environment
The generation that can promote hydroxyl radical free radical in waste water down, to accelerate reaction rate, but every technology by waste water quality influenced compared with
Greatly, as ultraviolet light is more sensitive to the coloration and turbidity of waste water, and the above technology luminous energy or less efficient, the energy consumption of electric energy conversion
Larger, the residence time is long, limits its application.
In addition, considering from the structure of Fenton reactor, existing Fenton medicament majority is sprayed by the mating ejector of metering pump
Inlet pipeline, then the static mixer through one or more levels different types mixed, mixed effect is more considerable, but transport
The problem of will occurring static mixer fouling after row a period of time and then blocking, it is unfavorable for continuous production, and static mixing
Pipe resistance can be caused to become larger after device fouling, the load of intake pump increases, and reduces the service life of pump.
CN201410263905.8 discloses a kind of reactor for being used for liquid-solid two-phase successive reaction and detaching online.Its institute
The technical issues of solution be cannot meet simultaneously between enough stopping times for existing liquid-solid reactor, residence time destribution is narrow,
Line detaches and serialization, the processing requirement of enlargement, and proposition is a kind of to be used for liquid-solid two-phase successive reaction and detach online anti-
Answer device.Its technical solution:The reactor is divided into two parts up and down, and top is deflector type flow reactor, and lower part is online point
From device.A rotary shaft up and down is equipped in reactor cylinder body, the dynamic flow deflector of multistage and quiet flow deflector are alternately installed, altogether
With formation reaction solution baffling channel;Stirrer paddle is housed on dynamic flow deflector;Line separator contains strainer, cone-type spiral, filtrate
Case, cycle filtrate (liquid and filtered solid outlet;Reaction solution enters reactor, is not wrecked in the form of laminar flow under self gravitation effect
Stream is stirred on dynamic flow deflector, until completing reaction.The reactor realizes the organic coupling reacted and detached, dynamic and static
Stirrer paddle on flow deflector and dynamic flow deflector cooperates, and realizes that laminar flow reaction and reaction solution are sufficiently mixed;Online separation
Thermal sensitivity product is effectively reduced with removal product to convert, and is also beneficial to balanced reaction system and is moved to product direction, to
Improve product yield.Disadvantage is that:When flow is flowed along gravity direction, back-mixing degree than flow perpendicular to
The mobile phase of gravity direction is to bigger, thus residence time destribution can be wider, is unfavorable for fast reaction;If in addition, dynamic flow deflector
Or quiet flow deflector is at an angle to the horizontal direction, can cause solid or flco in dynamic flow deflector at helical axis or quiet water conservancy diversion
Piece is accumulated at reactor wall, though will not reactor plugs, solid is not easy to remove.
Invention content
For the prior art and the deficiency of equipment, technical solution of the invention is to provide that a kind of floor space is small, stops
Stay the Fenton oxidation baffled reactor that the time is short, medicament utilization rate is high.Another technical solution of the present invention is to provide one
Kind aggravation Fenton medicament and turbulent flow of the waste water in medicament mixed zone, to ensure the mixing effect of Fenton medicament and waste water
Rate ensures that waste water, by reaction zone, utmostly reduces back-mixing with laminar flow pattern, improves the Fenton oxidation folding of medicament utilization rate
The method for processing organic wastewater of flow reactor.
Technical solution of the invention is the novel Fenton oxidation baffled reactor of the processing organic wastewater, special
Different place is, the medicament mixed zone and deflector type reaction zone that the reactor is set gradually from inside to outside by concentric sleeve, instead
Four pipe interfaces being arranged on device, the wherein waterwater entrance of area of bottom centre setting are answered, the setting of deflector type reaction zone bottom
Series of compression air interface, far from setting discharge outlet at center and exhaust outlet composition.Wherein, organic wastewater passes through in exterior line
After filtering and adjusting pH, the mixed zone inner cavity of reactor is entered from reactor upper tangential, after being sufficiently mixed, in deflector type reaction zone
Fast reaction, most afterwards through discharge outlet outflow reactor.
As preferred:Organic wastewater enters medicament mixed zone through tangential water inlet in the form of tangential admission, and waste water is in institute
It states medicament mixed zone to stream along the upward spiral of cylinder inner wall, helps to mix.
As preferred:Agitating device is equipped in the medicament mixed zone, cylinder inner wall is equipped with serial fin baffle, organic waste
The mixed liquor of water and medicament is streamed along the upward rapid spiral of cylinder inner wall, and fin baffle is further exacerbated by the less turbulence of waste water,
Waste water is promoted to be mixed with the uniform of medicament.
As preferred:The deflector type reaction zone is equipped with several concentric sleeves, the fixed upper folding of upper disk at the top of sleeve cavity
Flow cartridge, the fixed lower baffling cylinder of lower wall of sleeve cavity bottom are horizontal blanking between the upper baffling cylinder and the lower wall, described
Vertical gap, the lower baffling cylinder between upper baffling cylinder and the lower baffling cylinder and the horizontal blanking between the upper disk, altogether
With the water passage for constituting deflector type reaction zone.
As preferred:The water passage of the deflector type reaction zone is designed using cross-section, to ensure waste water with laminar flow
Pattern utmostly reduces back-mixing by reaction zone, improves medicament utilization rate.
As preferred:Deflector type reaction zone bottom is provided with more aeration tubes, aggravates liquid perturbation by aeration, into
One step promotes Fenton medicament and the mixing of waste water, reacts;Meanwhile the flco that Fenton's reaction can be generated of the vortex for being aerated formation or
Particle is taken away in time, reduces flco or particle and is accumulated in reaction zone, reduces equipment and block risk.
As preferred:The upper edge of baffling cylinder is evenly arranged aperture on the deflector type reaction zone, is set at the top of the upper disk
It is equipped with vent valve, the gas generated convenient for reaction is discharged in time, prevents accumulated gases, reduces flow dead zone.
As preferred:The reactor diameter be 400~2000mm, be highly 100~1000mm, ratio of height to diameter be 0.1~
1, vertical folding flow cartridge group number is 2~20.
Another technical solution of the present invention is the method for processing organic wastewater of the Fenton oxidation baffled reactor,
It is characterized in that organic wastewater is quantitatively added by metering pump through ejector after filtering, adjusting pH in inlet pipeline successively
FeSO4Solution and H2O2Solution into baffled reactor, while opening aerator and agitating device, air water volume flow ratio
It is 0.1:1~10:1, motor mixing speed is 10~300RPM, and in deflector type reaction zone, composite waste is with the pattern of laminar flow
Pass through, and carry out quick Fenton's reaction, through downflow weir outflow reactor.
As preferred:The medicament that the organic wastewater flows into reactor with Fenton medicament through tangential admission mouth high speed mixes
Area, starts stirring motor and aerator, and the two realizes quickly mixing in the region, deflector type reaction zone entered back into, described
Horizontal blanking, the upper baffling cylinder between upper baffling cylinder and the lower wall and the vertical gap between the lower baffling cylinder, institute
State the horizontal blanking between lower baffling cylinder and the upper disk, in the annular space deflector type channel collectively formed, the organic wastewater with
Fenton medicament is flowed from inside to outside with laminar flow pattern, fast reaction, and the waste water after abundant Fenton's reaction is through downflow weir
It is flowed out afterwards from the discharge outlet of reactor side;It reacts the gas generated and aerating gas is collected to reactor head, flow through folding
Series of holes in flow cartridge is discharged into air from inside to outside, from exhaust pipe.
Compared with prior art, beneficial effects of the present invention:
(1) in the present invention, the form that waste water enters medicament mixed zone is tangential admission, and waste water is in medicament mixed zone along cylinder
The upward spiral of inner wall is streamed, and helps to mix.
(2) cylinder inner wall of the invention is equipped with serial fin baffle, can aggravate the less turbulence of waste water, improves mixed effect.
(3) the present invention substitutes traditional static mixing using reactor inner cavity as the main mixed zone of Fenton medicament and waste water
Device, by additional stirring motor, be adjusted the Reynolds number of composite waste and static mixer quite it is even higher, incorporation time is led to
It crosses mixed zone volume to be adjusted, ensures mixed effect.
(4) the present invention using reactor inner cavity as the main mixed zone of Fenton medicament and waste water, compare by cross section of fluid channel bigger
In traditional line mixer, the problem of fouling and pipeline blockage can be effectively improved.
(5) the present invention is compared to traditional tubular-mix, pipe resistance smaller, thus can reduce the pressure head of intake pump, reduces
Energy consumption.
(6) the cross-section design of deflector type reaction zone of the invention ensure that mixed waste water with the pattern stream of laminar flow
It is dynamic, back-mixing can be utmostly reduced, for this fast reaction of Fenton, it is ensured that reaction carries out under higher rate always, carries
High medicament utilization rate, while the residence time is shortened, and then save the floor space of whole device.Traditional Fenton's reaction pond
Residence time, other class Fenton technologies were also differed at 1~2 hour, and the residence time of this reactor can generally at 4 hours or more
Control greatly improved Fenton treatment effeciency at 10~15 minutes.
(7) the vortex that aeration of the invention is formed can take away the flco or particle that Fenton's reaction generates in time, reduce flco
Or particle is accumulated in reaction zone, is reduced equipment and is blocked risk.
(8) vent valve is provided at the top of upper disk of the invention, the gas generated convenient for reaction is discharged in time, prevents air volume
It is poly-, reduce flow dead zone.
(9) reactor floor space of the invention is small, and the residence time is short, and medicament utilization rate is high, before having larger application
Scape.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention.
Fig. 2 is the vertical view of the present invention.
Primary clustering symbol description:
12 tangential water inlet 13 of medicament mixed zone 1 agitating device, 11 fin baffle
14 discharge outlet of downflow weir, 15 exhaust pipe, 16 deflector type reaction zone 2
22 aperture of baffling cylinder, 221 lower wall 23 on upper disk 21
24 aeration tube of lower baffling cylinder, 25 vent valve, 26 water inlet pipe 31
First storage tank, 321 322 first ejector of metering pump, 323 pH probes 324
Second 325 second ejector of storage tank, 326 third storage tank 327
Specific implementation mode
The present invention will be described in further detail in conjunction with attached drawing:
It please refers to Fig.1, shown in Fig. 2, the medicament that Fenton oxidation baffled reactor of the invention is set gradually from inside to outside
Mixed zone 1 and deflector type reaction zone 2 are constituted.
In the present embodiment, electric mixing device 11 is equipped in the medicament mixed zone 1, reactor cylinder inner wall is equipped with series
Fin baffle 12 can aggravate the less turbulence of waste water, improve mixed effect;Waste water is through tangential water inlet 13 with the shape of tangential admission
Formula enters medicament mixed zone 1, and waste water streams along the upward spiral of cylinder inner wall in medicament mixed zone 1, helps to mix.
In the present embodiment, the deflector type reaction zone 2 is equipped with several concentric sleeves, and the upper disk 21 at the top of sleeve cavity is fixed
Upper baffling cylinder 22, the fixed lower baffling cylinder 24 of lower wall 23 of sleeve cavity bottom, between the upper baffling cylinder 22 and the lower wall 23
Horizontal blanking, the vertical gap between the upper baffling cylinder 22 and the lower baffling cylinder 24, the lower baffling cylinder 24 with it is described
Horizontal blanking between upper disk 21 together constitutes the water passage of deflector type reaction zone.The deflector type reaction zone 2 crosses water
Channel is designed using cross-section, to ensure that waste water, by reaction zone, utmostly reduces back-mixing with laminar flow pattern, improves medicament
Utilization rate.2 bottom of deflector type reaction zone is provided with more aeration tubes 25, aggravates liquid perturbation by aeration, further promotees
Into Fenton medicament and the mixing of waste water, react;Meanwhile the flco that Fenton's reaction can be generated of the vortex for being aerated formation or particle and
When take away, reduce flco or particle and accumulated in reaction zone, reduce equipment and block risk.Upper baffling cylinder is alternately distributed with lower baffling cylinder
In reaction zone.
In the present embodiment, the upper edge of baffling cylinder 22 is evenly arranged aperture 221 on the deflector type reaction zone 2, it is described on
21 top of disk is provided with vent valve 26, and the gas generated convenient for reaction is discharged in time, prevents accumulated gases, reduces flow dead zone.
11 outmost turns of deflector type reaction zone are arranged downflow weir 14, the outflow reaction of discharge outlet 15 through side after treated waste water outflow
Device.
In the present embodiment, a diameter of 400~2000mm of barrel reactor, is highly 100~1000mm, ratio of height to diameter is
0.1~1, vertical folding flow cartridge group number is 2~20.
Refering to Figure 1, the raw water from plant area enters system by water inlet pipe 31, diluted acid in the first storage tank 321 (or
Liquid caustic soda) through the injection ejector 323 of metering pump 322, adjust wastewater pH to 3~4, by the pH value after the 324 detection adjusting of pH probes, together
When interlocked control metering pump 322 acid adding (or adding alkali) rate;FeSO in second storage tank 3254Solution is by metering pump 322 through
One ejector 323 is quantitatively added to main line, the H in the second storage tank 3252O2Solution is by metering pump 322 through the second ejector 326
It quantitatively adds to main line, the addition of Fenton medicament finishes.Waste water flows at a high speed reactor with Fenton medicament through tangential water inlet 13
Medicament mixed zone 1, start agitating device 11 and aeration tube 25, the two realizes quickly mixing in the region, enters back into deflector type
Reaction zone 11, upper disk 21, lower wall 23, upper baffling cylinder 22 and lower baffling cylinder 24 constitute annular space deflector type channel in, waste water with
Fenton medicament is flowed from inside to outside with laminar flow pattern, fast reaction, and the waste water after abundant Fenton's reaction is through downflow weir
It is flowed out from the discharge outlet 15 of reactor side after 14;It reacts the gas generated and aerating gas is collected to reactor head, flow through
A series of apertures 221 on upper baffling cylinder 13 are discharged into air from inside to outside, from exhaust pipe 17.
It please refers to Fig.1, shown in Fig. 2, the method for processing organic wastewater of Fenton oxidation baffled reactor of the present invention, wraps
It includes, organic wastewater quantitatively adds FeSO by metering pump through ejector successively after filtering, adjusting pH, in inlet pipeline4Solution and H2O2
Solution, into baffled reactor, the medicament that organic wastewater flows into reactor with Fenton medicament through tangential admission mouth high speed mixes
Area, starts stirring motor and aerator, and air water volume flow ratio is 0.1:1~10:1, motor mixing speed be 10~
300RPM, the two the region realize quickly mixing, enter back into deflector type reaction zone 2, the upper baffling cylinder 22 with it is described under
Horizontal blanking, the upper baffling cylinder 22 between disk 23 and the vertical gap between the lower baffling cylinder 24, the lower baffling cylinder
Horizontal blanking between 24 and the upper disk 21, in the annular space deflector type channel collectively formed, organic wastewater and Fenton medicament with
Laminar flow pattern flows from inside to outside, fast reaction, and the waste water after abundant Fenton's reaction after downflow weir from reactor
The discharge outlet of side flows out;It reacts the gas generated and aerating gas is collected to reactor head, flow through on baffling cylinder 22
Series of holes 221 is discharged into air from inside to outside, from exhaust pipe.
Embodiment 1:
Organic wastewater flow be 0.2m3/h, CODCr 3620mg/L, designed baffled reactor size be Φ 500 ×
8 groups of upper and lower baffling cylinders, gas-water ratio 3 is arranged in 120mm, inside altogether:1, motor mixing speed is 50RPM, FeSO4Solution (Fe2+
Molar concentration is 1.42mol/L) dosage be 13.6L/h, H2O2Solution (27.5%, w/w) dosage is 4L/h, after processing
CODCr drops to 500mg/L from 3620mg/L.
Embodiment 2:
Organic wastewater flow be 1m3/h, CODCr 8050mg/L, designed baffled reactor size be Φ 900 ×
Five groups of upper and lower baffling cylinders 22,24 are arranged in 200mm, inside altogether, and air water volume ratio is 10:1, motor mixing speed is 100RPM,
FeSO4Solution (Fe2+ molar concentrations are 1.42mol/L) dosage is 44.4L/h, H2O2 solution (27.5%, w/w) dosage
For 20L/h, CODCr drops to 2100mg/L from 8050mg/L after processing.
Embodiment 3:
Organic wastewater flow is 4.2m3/h, and CODCr 12000mg/L, designed baffled reactor size is Φ 1200
10 groups of vertical folding flow cartridges are arranged in × 900mm, inside altogether, and air water volume ratio is 8:1, motor mixing speed is 250RPM, FeSO4It is molten
Liquid (Fe2+ molar concentration is 1.42mol/L) dosage is 185L/h, H2O2 solution (27.5%, w/w) dosage is 105L/h,
CODCr drops to 4800mg/L from 12000mg/L after processing.
The foregoing is merely presently preferred embodiments of the present invention, all equivalent changes done according to scope of the invention as claimed with
Modification, should all belong to the covering scope of the claims in the present invention.
Claims (10)
1. a kind of Fenton oxidation baffled reactor of processing organic wastewater, which is characterized in that the reactor is by concentric sleeve
The medicament mixed zone set gradually from inside to outside and deflector type reaction zone, four pipe interfaces being arranged on reactor, midsole
Waterwater entrance is arranged in portion center, and series of compression air interface is arranged in deflector type reaction zone bottom, is drained far from being arranged at center
Mouth and exhaust outlet.
2. Fenton oxidation baffled reactor according to claim 1, which is characterized in that organic wastewater through tangential water inlet with
The form of tangential admission enters medicament mixed zone, and waste water is streamed along the upward spiral of cylinder inner wall in the medicament mixed zone, helped
In mixing.
3. Fenton oxidation baffled reactor according to claim 2, which is characterized in that be equipped with and stir in the medicament mixed zone
Mix device, cylinder inner wall is equipped with serial fin baffle, and the mixed liquor of organic wastewater and medicament is along the upward rapid spiral of cylinder inner wall
It streams, fin baffle is further exacerbated by the less turbulence of waste water, and waste water is promoted to be mixed with the uniform of medicament.
4. Fenton oxidation baffled reactor according to claim 1, which is characterized in that if the deflector type reaction zone is equipped with
Concentric sleeve is done, the fixed upper baffling cylinder of upper disk at the top of sleeve cavity, the fixed lower baffling cylinder of lower wall of sleeve cavity bottom is described
Horizontal blanking, the upper baffling cylinder between upper baffling cylinder and the lower wall and the vertical gap between the lower baffling cylinder, institute
The horizontal blanking between lower baffling cylinder and the upper disk is stated, the water passage of deflector type reaction zone is together constituted.
5. Fenton oxidation baffled reactor according to claim 4, which is characterized in that the water passage uses cross-section
Design improves medicament utilization rate to ensure that waste water, by reaction zone, utmostly reduces back-mixing with laminar flow pattern.
6. Fenton oxidation baffled reactor according to claim 4, which is characterized in that deflector type reaction zone bottom is set
More aeration tubes are equipped with, liquid perturbation is aggravated by aeration, further promotes Fenton medicament and the mixing of waste water, react;Meanwhile
The vortex that aeration is formed can take away the flco or particle that Fenton's reaction generates in time, and it is tired in reaction zone to reduce flco or particle
Product reduces equipment and blocks risk.
7. Fenton oxidation baffled reactor according to claim 4, which is characterized in that baffling on the deflector type reaction zone
The uniformly distributed aperture in upper edge of cylinder, the upper disk top are provided with vent valve, and the gas generated convenient for reaction is discharged in time, prevents
Only accumulated gases reduce flow dead zone.
8. Fenton oxidation baffled reactor according to claim 1, which is characterized in that the reactor diameter be 400~
2000mm is highly 100~1000mm, and ratio of height to diameter is 0.1~1, and upper and lower baffling cylinder group number is 2~20.
9. a kind of method for processing organic wastewater of the baffled reactor of Fenton oxidation according to claim 1, which is characterized in that
Organic wastewater quantitatively adds FeSO by metering pump through ejector successively after filtering, adjusting pH, in inlet pipeline4Solution and H2O2It is molten
Liquid into baffled reactor, while opening aerator and agitating device, and air water volume flow ratio is 0.1:1~10:1, electricity
Machine mixing speed is 10~300RPM, and in deflector type reaction zone, composite waste is passed through with the pattern of laminar flow, and is carried out quickly fragrant
Pause and react, through downflow weir outflow reactor.
10. the method for processing organic wastewater of Fenton oxidation baffled reactor according to claim 9, which is characterized in that institute
The medicament mixed zone that organic wastewater flows into reactor with Fenton medicament through tangential admission mouth high speed is stated, stirring motor and aeration are started
Device, the two realize quickly mixing in the region, deflector type reaction zone are entered back into, between the upper baffling cylinder and the lower wall
Horizontal blanking, the vertical gap between the upper baffling cylinder and the lower baffling cylinder, the lower baffling cylinder and the upper disk it
Between horizontal blanking, in the annular space deflector type channel collectively formed, the organic wastewater and Fenton medicament with laminar flow pattern by
Flow from inside to outside, fast reaction, and the waste water after abundant Fenton's reaction after downflow weir from the discharge outlet of reactor side
Outflow;It reacts the gas generated and aerating gas is collected to reactor head, flow through the series of holes on baffling cylinder by introversion
Outside, it is discharged into air from exhaust pipe.
Priority Applications (1)
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| CN117049624A (en) * | 2023-10-12 | 2023-11-14 | 河北中瀚水务有限公司 | Medicine-adding simulation experiment device for water purification plant |
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