CN107651747A - Circulation Fenton fluidized bed waste water treatment device and technique in a kind of three-phase list baffle plate - Google Patents
Circulation Fenton fluidized bed waste water treatment device and technique in a kind of three-phase list baffle plate Download PDFInfo
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- CN107651747A CN107651747A CN201710958405.XA CN201710958405A CN107651747A CN 107651747 A CN107651747 A CN 107651747A CN 201710958405 A CN201710958405 A CN 201710958405A CN 107651747 A CN107651747 A CN 107651747A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- 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
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- 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
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
- C02F2305/023—Reactive oxygen species, singlet oxygen, OH radical
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
- C02F2305/026—Fenton's reagent
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- 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 invention discloses circulation Fenton fluidized bed waste water treatment device and its technique in a kind of three-phase list baffle plate.Device includes fluidized-bed reactor tower body, circulation line, inlet channel, chemicals dosing plant, outlet conduit, air inlet pipe, and circulation line connects the circulation interface and inlet channel at tower side wall 2/3, exports coupled reaction device tower bottom even water distributor；Bottom of towe side-walls interface is provided with chemicals dosing plant, opening connects light supply apparatus at side wall 1/3, solid-liquid separator is disposed at tower body 2/3, solid-liquid separator is using lower part as fluid bed Fenton's reaction area, single baffle plate is disposed at reaction zone diameter 1/3,10cm decanting zone side-walls are provided with delivery port above circulation interface.The device and its technological operation are simple, efficiency high, floor space are small, easy maintenance；Fenton reagent dosage is reduced, and generation chemical sludge is less, and operating cost is low.
Description
Technical field
The invention belongs to handle the technical field of industrial wastewater.At circulation Fenton fluid bed in three-phase list baffle plate
Manage organic wastewater process.
Background technology
Given up with the development of the social economy, can produce such as slurrying of a large amount of industrial wastewaters in process of production compared with conglomerate
Water, oily waste water etc., these waste water have the characteristics that discharge capacity is big, pollutant load is high, component is more, colourity is deep, difficult degradation, and
After biochemical process and the physico-chemical process processing by routine simple at present, the organic matter for still also having part difficult degradation in water is discharged, and
As the policy of national " energy-saving and emission-reduction " proposes and more and more stricter to the emission request of " three wastes ", it is necessary to using more efficient
Waste water treatment process and technology.Fenton technology is increasingly paid close attention to by outer in the industry, turned into as a kind of advanced oxidation technology
Most potential clean water purification technology.Fenton-like system is H2O2In Fe2+Catalytic action under produce with Strong oxdiative ability hydroxyl
Base free radical, when introducing ultraviolet light, visible ray, oxygen, oxalates etc. into Fenton-like system, it can also improve generation hydroxyl free
Base efficiency, there is remarkable result to processing organic matter.Because Fenton-like system in use there is reagent not have toxicity, homogeneous body
It is the obstruction of no mass transport, and simple to operate, the advantages that counter investment is small, so being widely used for always poisonous and harmful
In the processing of waste water.
Why Fenton reagent has very strong oxidability in Fenton-like system, is because H2O2By Fe2+Reduction decomposition generates
Hydroxyl radical free radical, and trigger other more free radicals, its reaction mechanism is as follows：
Fe2++H2O2→Fe3++OH-+·OH
Fe3++H2O2→Fe2++HO2+H+
Fe2++·OH→OH-+Fe3+
RH+·OH→R·+H2O
R·+Fe3+→R++Fe2+
R++O2→ROO+→··→CO2+H2O
It can be seen that from above-mentioned chain reaction process：
(1) hydroxyl radical free radical has higher oxidation-reduction potential (E=2.80V) compared with other strong oxidizers, is to remove F2
In addition, most strong oxidant；
(2) oxidisability of Fenton reagent can apply to the processing of various organic matters without selectivity.And reaction efficiency
Height, it can carry out at normal temperatures and pressures, it is not necessary to complicated reaction system；
(3) because the oxidation-reduction potential of hydroxyl radical free radical is E=2.80V, when adding light source, such as it is ultraviolet light, visible
Light time, electron transition can be excited, electron transfer efficiency be improved, so as to improve catalytic efficiency.
There is also some problems, such as hydrogen peroxide and Fe at present for Fenton-like system2+The utilization rate of ion is relatively low；Reagent consumption amount
Huge, operating cost is high.Therefore, more researchers improve these problems by modified Fenton technology, such as light Fenton,
The Fenton combination techniques such as electric Fenton, Fenton fluid bed.
The content of the invention
The invention aims to solve the problems such as existing homogeneous Fenton-like system reaction efficiency is low, operating cost is high, lead to
Cross and utilize out-phase Fenton-like system, improve structure of reactor, the mode of addition light source raising reaction efficiency can significantly reduce medicament and disappear
The utilization rate of consumption and hydrogen peroxide and ferrous ion.
Therefore, in modified out-phase Fenton technology of the present invention, using fluid bed Fenton reactor to rely on, modified is passed through
Catalyst and optimization reaction adjust and achieve the goal, its specific scheme is as follows：
Circulation Fenton fluidized bed processor in a kind of three-phase list baffle plate, including fluidized-bed reactor tower body 1, circulation line
2nd, inlet pipeline 3, dosing pipe 4, outlet pipeline 5, air inlet pipe 9, it is characterised in that：
The open top of fluidized-bed reactor tower body 1, set in the fluidized-bed reactor tower body side wall of open top
There is outlet pipeline 5, the fluidized-bed reactor tower body bottom is provided with even water distributor 11, and described water-locator is with being located at the stream
The water inlet 16 of fluidized bed reactor tower body bottom connects, at tower body height 1/2 more than solid-liquid point is horizontally installed with (at preferably 2/3)
From device 12, the top of solid-liquid separator 12 is provided with close to the side wall of the fluidized-bed reactor tower body of the solid-liquid separator 12
Circulation interface 15；Described solid-liquid separator 12 divides the fluidized-bed reactor tower body 1 for upper and lower two parts, the solid-liquid
For separator 12 using lower part as fluid bed Fenton's reaction area, Fenton's reaction area side is provided with light supply apparatus 13, in reaction zone
Vertical single baffle plate 14 is additionally provided with, a side of described single baffle plate 14 is fixed on the described side of fluidized-bed reactor tower body 1
On wall；Described one end of circulation line 2 is followed with what the side wall above the fluidized-bed reactor tower body solid-liquid separator was provided with
Ring interface 15 connects, and the other end connects with the water inlet 16 positioned at the tower body bottom, and the described intermediate arrangement of circulation line 2 has
Connecting line 31 provided with stop valve 8, described connecting line 31 connect with inlet pipeline 3, described connecting line 31 and institute
Force (forcing) pump 61 is provided between the inlet pipeline 3 stated；The circulation line 2 is set between the position of water inlet 16 and connecting line
There is circulating pump 21；
Described fluid bed Fenton's reaction area is provided with charging aperture 17 close to the tower body sidewall locations of even water distributor；Described
Dosing pipe 4 includes FeSO4Dosing pipe 41 and hydrogen peroxide dosing pipe 42, the FeSO4Dosing pipe and hydrogen peroxide chemical feed pipe
Road is connected each via corresponding force (forcing) pump 63,64 with charging aperture 17, and the air inlet pipe 9 is entered also by air pump 62 and described
Material mouth 17 connects.
Preferably, the plane where single baffle plate of the present invention 14 fall with described plane vertical through the fluidisation
At the 2/3 of the diameter of the circular section of the central shaft of bed reactor tower body 1.
Further, FeSO of the present invention4Dosing pipe 41, hydrogen peroxide dosing pipe 42, connecting line 31, air inlet pipe 7
It is equipped with respective streams gauge.
Further, circulation line 2 of the present invention, dosing pipe 4, outlet pipeline 5, air inlet pipe 9 are equipped with stop valve.
Further, dosing pipe 4 and outlet pipeline 5 of the present invention are mounted on filter screen, and the filter screen mesh number is 200~
300 mesh.
Further, even water distributor 11 of the present invention is patty, is evenly distributed with out on described patty surface
Water hole.
Further, uniform pore openings 30-50 on patty surface of the present invention, each aperture is 2-10mm.
Further, outlet pipeline 5 of the present invention is located in the fluidized-bed reactor tower body side wall of the top of circulation interface 15.
Further, the present invention provides circulation Fenton fluidized bed processor processing in the three-phase list baffle plate described in a kind of application
The technique of waste water, comprises the following steps：
(1) by pending wastewater dilution to 400~900mg/L of COD, pH to 3~4 is adjusted, passes sequentially through inlet pipeline
3rd, connecting line 31 and circulating pump 21 are injected into fluidized-bed reactor, and wastewater flow is controlled by the flowmeter on connecting line
For 20~50mL/min；Pass through FeSO before starting the reaction4Dosing pipe 41 blasts the wastewater quality 5 after accounting for dilution to reactor
~10wt% iron filings；
(2) when waste water liquid level, which rises to, approaches solid-liquid separator 12, light supply apparatus 13 is opened, closes inlet pipeline 31,
Circulating pump 21 works on, and opens air inlet pipe 9, the air push waste water now blasted is in fluid bed Fenton's reaction area inner recirculation flow
It is dynamic, by controlling flowmeter air mass flow is maintained at 200~1000mL/min；
(3) after liquid level reaches solid-liquid separator more than 12 and floods circulation interface 15, effluent part passes through circulation line 2
Reactor is re-entered into, now opens inlet pipeline 31 and dosing pipe 4, the H that will have been configured2O2The aqueous solution adds from hydrogen peroxide
Pencil road 42 is blown into reactor, and it is 5~10mL/min to control flow, blasts H after fluidized-bed reactor2O2Material amount
Concentration is 0.001~0.01mol/L；
The FeSO that will have been configured simultaneously4The aqueous solution and/or the solid catalysis agent solution of iron load are from FeSO4Dosing pipe 41
It is blown into reactor, the H configured2O2H in the aqueous solution2O2With the FeSO configured4What the aqueous solution and/or iron loaded consolidates
Fe in body catalyst solution2+Material amount ratio be 5~20:1；The solid catalyst of the iron load is Fe2+Load capacity is 5
~10% solid catalyst；
The now water outlet of even water distributor 11 keeps certain rate of climb, and liquid is in single 14 liang of baffle plate in fluidized-bed reactor
Side circulates, and solid catalyst, the iron filings of iron load are in fluidisation state；Fe2+With H2O2The Fe of oxidation reaction generation occurs3+With knot
The mode of crystalline substance precipitation adsorbs the solid catalyst and iron filings surface in iron load；
(4) after solid-liquid separator, the solid catalyst of iron filings and iron load in waste water is separated, after processing
Clear water overflows from the spout hole of outlet pipeline.
Further, the solid catalyst of iron of the present invention load is 2~4mm granular activated carbon, brick with particle diameter
Grain or quartz sand are carrier, by preparing FeSO4Solution utilizes dipping calcining or coprecipitation by Fe2+Load to above-mentioned carrier
In, control Fe2+Load capacity is 5~10%, the solid catalyst of as described iron load.
Usually, reaction passes through FeSO before starting4Dosing pipe 41 to reactor blast iron filings when flow can be according to pump
Flow voluntarily determine, only need to by iron filings inject reactor.
Generally, the FeSO4The aqueous solution and/or the solid catalysis agent solution of iron load play a part of catalytic reaction, will
The amount calculated is passed through reactor, and its flow is recommended as 0.1~5mL/min.
Homogeneous Fenton-like system is contrasted, out-phase circulation type fluid bed Fenton-like system of the invention has the following advantages：
1. solid catalyst can be provided more avtive spots, load more iron due to its larger specific surface area
Above, so as to improve reaction efficiency, and due to the raising of charge transfer effciency, the use of hydrogen peroxide is significantly reduced,
Can boosting homogeneous reaction well progress.
2. inner ring stream process improves solid-liquid mass-transfer efficiency in fluidized-bed reactor.In fluidized bed reaction zone, liquid is upper
When promote solid catalyst and iron filings upper, and the presence of single baffle plate make it that both sides have density contrast, so as to liquid flow to it is another
Side so that solid-liquid directly in reactor internal circulation flow, improves the mass-transfer efficiency between solid-liquid, and this also significantly increases out-phase
The reaction efficiency of Fenton.
3. synergy can be played to Fenton's reaction by providing light source in reaction zone, due to the energy gap relative narrower of iron,
Visible ray can excite electron transition on iron atom to form electron hole pair, can because the hole of valence band is to strong oxidizing property
To improve electron transfer efficiency, good booster action is played to Fenton's reaction.
Brief description of the drawings
Fig. 1 is circulation Fenton fluidized bed processing organic wastewater process chart in three-phase list baffle plate.
In Fig. 1,1- fluidized-bed reactor tower bodies, 11- even water distributors, 12- solid-liquid separators, 13- light supply apparatuses, 14-
Single baffle plate, 15- circulation interfaces, 16- water inlets, 17- charging apertures, 2- EGRs, 21- circulating pumps, 3- inlet pipelines, 31- connect
Take over road, 4- dosing pipes, 41-FeSO4Dosing pipe, 42- hydrogen peroxide dosing pipes, 5- outlet pipelines, 61- force (forcing) pumps, 62-
Air pump, 63-FeSO4Dosing pipe force (forcing) pump, 64- hydrogen peroxide dosing pipe force (forcing) pumps, 7- flowmeters, 8- stop valves, 9- enter
Tracheae.Have multiple in flowmeter and stop valve figure, be only labelled with one of them.
Embodiment
With reference to specific accompanying drawing 1 and embodiment, the present invention is described further, but protection scope of the present invention is simultaneously
It is not limited only to this.
The present invention realizes the place of waste water using circulation Fenton fluidized bed processor in the three-phase list baffle plate shown in Fig. 1
Reason, including fluidized-bed reactor tower body 1 (diameter 15cm, height 100cm), circulation line 2, inlet pipeline 3, dosing pipe 4, go out
Water lines 5, air inlet pipe 9.Fluidized-bed reactor tower body open top, tower body bottom are provided with even water distributor 11, even water distributor
11 be patty, apopore is evenly distributed with surface, uniform pore openings 30-50, each aperture is 2-10mm.Tower body height 2/
Solid-liquid separator 12 is installed, the tower body side wall of the top of solid-liquid separator 12 is provided with circulation interface 15, height where circulation interface at 3
Spend at tower body height 2/3；10cm regions are decanting zone above circulation interface, and outlet pipeline 5 is located at the tower body of decanting zone
In side wall.
For solid-liquid separator using lower part as fluid bed Fenton's reaction area, Fenton's reaction area side is provided with light supply apparatus
13, light supply apparatus is ultraviolet light source, and height is at tower body height 1/3 where light supply apparatus；It is vertical to be additionally provided with reaction zone
Single baffle plate 14, a side of described single baffle plate are fixed in described fluidized-bed reactor tower body side wall, single institute of baffle plate 14
Plane fall in the diameter with described plane vertical through the circular section of the central shaft of the fluidized-bed reactor tower body
2/3 at, length and width are respectively 15cm, 10cm；Described circulation line one end and the fluidized-bed reactor tower body separation of solid and liquid
The circulation interface 15 that side wall above device is provided with connects, the other end and the water inlet positioned at the fluidized-bed reactor tower body bottom
Mouth 16 connects, and the described intermediate arrangement of circulation line 2 has the connecting line 31 provided with stop valve 8, and described connecting line is with entering
Water lines 3 are connected, and force (forcing) pump 61 is provided between connecting line and inlet pipeline；Circulation line 2 is close to the position of water inlet and company
Adapter is provided with circulating pump 21 between road；
Fluid bed Fenton's reaction area is provided with charging aperture 17 close to the tower body sidewall locations of even water distributor；Described chemical feed pipe
Road 4 includes FeSO4Dosing pipe 41 and hydrogen peroxide dosing pipe 42, the FeSO4Dosing pipe with hydrogen peroxide dosing pipe each
It is connected by force (forcing) pump 63,64 with charging aperture, the air inlet pipe connects also by air pump 62 with described charging aperture 17.In order to
Monitor the charging situation of every pipeline, FeSO4Dosing pipe, hydrogen peroxide dosing pipe, connecting line, air inlet pipe are equipped with accordingly
Flowmeter, EGR, dosing pipe, outlet pipeline are equipped with stop valve 8.
Embodiment 1
Using circulation Fenton fluidized bed processing petrochemical wastewater in three-phase list baffle plate, pass through waste water pump (i.e. connecting line
Force (forcing) pump) be injected into reactor, the COD of its waste water is 408mg/L after dilution, 12 times of colourity, adjusts the pH of waste water
For 3, the wastewater volume 10L after dilution, it is 20mL/min to control wastewater flow.Volume needed for hydrogen peroxide is in medicament storage tank
100mL (concentration 0.1mol/L), FeSO4·7H2Volume needed for the O aqueous solution is 20mL (concentration 0.1mol/L).In Fenton stream
Change the switch conditions that each valve is checked before bed brings into operation, open waste water pump after confirming errorless and pass through FeSO4Chemical feed pipe
Road direction reactor blasts 50g iron filings, and inlet pipeline is closed when wastewater flow rate is close to solid-liquid separator, and circulating pump works on, and beats
Drive tracheae into, the air push waste water now blasted is in reaction zone internal circulation flow, by controlling flowmeter to protect air mass flow
Hold 200mL/min, more than solid-liquid separator reached and after flooding circulation interface in liquid level, effluent part by circulation line again
Reactor is entered, now opens inlet pipeline (flow 20mL/min) and dosing pipe, hydrogen peroxide and FeSO4By respective
Force (forcing) pump is injected into reactor, and it is 5mL/min and 5mL/min to control flow respectively, while opens light source.In continuous processing 1
After hour, the water outlet of solid-liquid separator top is gradually limpid, and water outlet COD is down to 43mg/L after measured, and colourity is reduced to 0.7 times, reached
To discharging standards.
Embodiment 2
It is after dilution using circulation Fenton fluidized bed processing petrochemical wastewater, the COD of waste water in three-phase list baffle plate
632mg/L, 78 times of colourity, the pH for adjusting waste water is 4, and the volume of waste water is 10L after dilution, and it is 30mL/ to control wastewater flow
min.Volume needed for hydrogen peroxide is 500mL (concentration 0.1mol/L), FeSO in medicament storage tank4·7H2Volume needed for the O aqueous solution
For 50mL (concentration 0.1mol/L).The switch conditions of each valve are checked before Fenton fluid bed brings into operation, it is errorless when confirming
Waste water pump is opened afterwards and passes through FeSO4Dosing pipe blasts 70g iron filings to reactor, is closed when wastewater flow rate is close to solid-liquid separator
Inlet pipeline is closed, circulating pump works on, and opens air inlet pipe, the air push waste water now blasted is in reaction zone inner recirculation flow
It is dynamic, by controlling flowmeter air mass flow is kept 400mL/min, reach more than solid-liquid separator in liquid level and flood circulation and connect
After mouthful, effluent part re-enters into reactor by circulation line, now opens inlet pipeline and dosing pipe, hydrogen peroxide and
FeSO4It is injected into by respective force (forcing) pump in reactor, it is 8mL/min and 6mL/min to control flow respectively, while opens light
Source.After continuous processing 2 hours, the water outlet of solid-liquid separator top is gradually limpid, and water outlet COD is down to 65mg/L, colourity after measured
4 times are reduced to, reaches discharging standards.
Embodiment 3
It is after dilution using circulation Fenton fluidized bed processing petrochemical wastewater, the COD of waste water in three-phase list baffle plate
856mg/L, 102 times of colourity, the pH for adjusting waste water is 4, and the volume of waste water is 10L after dilution, and it is 50mL/ to control wastewater flow
min.Volume needed for hydrogen peroxide is 1000mL (concentration 0.1mol/L), FeSO in medicament storage tank4·7H2Volume needed for the O aqueous solution
For 50mL (concentration 0.1mol/L).The switch conditions of each valve are checked before Fenton fluid bed brings into operation, when confirmation nothing
Waste water pump is opened after by mistake and passes through FeSO4Dosing pipe blasts 100g iron filings to reactor, treats wastewater flow rate close to solid-liquid separator
When close inlet pipeline, circulating pump works on, and opens air inlet pipe, the air push waste water now blasted circulates in reaction zone
Flowing, by controlling flowmeter air mass flow is kept 1000mL/min, reach more than solid-liquid separator in liquid level and flood and follow
After ring interface, effluent part re-enters into reactor by circulation line, now opens inlet pipeline and dosing pipe, dioxygen
Water and FeSO4It is injected into by respective force (forcing) pump in reactor, it is 10mL/min and 5mL/min to control flow respectively, simultaneously
Open light source.After continuous processing 2 hours, the water outlet of solid-liquid separator top is gradually limpid, and water outlet COD is down to 102mg/ after measured
L, colourity are reduced to 9 times, reach discharging standards.
Claims (10)
1. circulation Fenton fluidized bed processor in a kind of three-phase list baffle plate, including fluidized-bed reactor tower body (1), circulation line
(2), inlet pipeline (3), dosing pipe (4), outlet pipeline (5), air inlet pipe (9), it is characterised in that：
Fluidized-bed reactor tower body (1) open top, the fluidized-bed reactor tower body side wall close to open top are provided with
Outlet pipeline (5), the fluidized-bed reactor tower body bottom are provided with even water distributor (11), and described water-locator is described with being located at
Water inlet (16) connection of fluidized-bed reactor tower body bottom, at tower body height 1/2 more than be horizontally installed with solid-liquid separator
(12), set above the solid-liquid separator (12) in the side wall of the fluidized-bed reactor tower body of the solid-liquid separator (12)
Some circulation interfaces (15)；The fluidized-bed reactor tower body (1) is divided into two parts up and down by described solid-liquid separator (12),
Using lower part as fluid bed Fenton's reaction area, Fenton's reaction area side fills the solid-liquid separator (12) provided with light source
Put (13), be additionally provided with vertical single baffle plate (14) in reaction zone, a side of described single baffle plate (14) is fixed on described
In fluidized-bed reactor tower body (1) side wall；Described circulation line (2) one end and the fluidized-bed reactor tower body separation of solid and liquid
Circulation interface (15) connection that side wall above device is provided with, the other end connect with the water inlet (16) positioned at the tower body bottom
Logical, described circulation line (2) intermediate arrangement has the connecting line (31) provided with stop valve (8), described connecting line (31)
Connected with inlet pipeline 3, force (forcing) pump (61) is provided between described connecting line (31) and described inlet pipeline (3)；It is described
Circulation line (2) is provided with circulating pump (21) between the position of water inlet (16) and connecting line；
Described fluid bed Fenton's reaction area is provided with charging aperture (17) close to the tower body sidewall locations of even water distributor；Described adds
Pencil road (4) includes FeSO4Dosing pipe (41) and hydrogen peroxide dosing pipe (42), the FeSO4Dosing pipe adds with hydrogen peroxide
Pencil road is connected each via corresponding force (forcing) pump (63) (64) with charging aperture (17), and the air inlet pipe (9) is also by air pump
(62) connected with described charging aperture (17).
2. circulation Fenton fluidized bed processor in three-phase list baffle plate as claimed in claim 1, it is characterised in that single gear
Plane where plate (14) falls in the circle with described plane vertical through the central shaft of the fluidized-bed reactor tower body (1)
At the 2/3 of the diameter in section.
3. circulation Fenton fluidized bed processor in three-phase list baffle plate as claimed in claim 1, it is characterised in that：The FeSO4
Dosing pipe (41), hydrogen peroxide dosing pipe (42), connecting line (31), air inlet pipe (7) are equipped with respective streams gauge.
4. circulation Fenton fluidized bed processor in three-phase list baffle plate as claimed in claim 1, it is characterised in that：The circulation
Pipeline (2), dosing pipe (4), outlet pipeline (5), air inlet pipe (9) are equipped with stop valve.
5. circulation Fenton fluidized bed processor in three-phase list baffle plate as claimed in claim 1, it is characterised in that：The dosing
Pipeline (4) and outlet pipeline (5) are mounted on filter screen, and the filter screen mesh number is 200~300 mesh.
6. circulation Fenton fluidized bed processor in three-phase list baffle plate as claimed in claim 1, it is characterised in that：It is described uniform
Water-locator (11) is patty, and apopore is evenly distributed with described patty surface.
7. circulation Fenton fluidized bed processor in three-phase list baffle plate as claimed in claim 6, it is characterised in that：Described circle
Uniform pore openings 30-50 on cheese surface, each aperture is 2-10mm.
8. circulation Fenton fluidized bed processor in three-phase list baffle plate as claimed in claim 1, it is characterised in that：The water outlet
Pipeline (5) is located in the fluidized-bed reactor tower body side wall above circulation interface (15).
9. the processing of circulation Fenton fluidized bed processor is useless in a kind of three-phase list baffle plate using described in one of claim 1~6
The technique of water, it is characterised in that comprise the following steps：
(1) by pending wastewater dilution to 400~900mg/L of COD, adjust pH to 3~4, pass sequentially through inlet pipeline (3),
Connecting line (31) and circulating pump (21) are injected into fluidized-bed reactor, and waste water stream is controlled by the flowmeter on connecting line
Measure as 20~50mL/min；Pass through FeSO before starting the reaction4Dosing pipe (41) blasts the waste water after accounting for dilution to reactor
5~10wt% of quality iron filings；
(2) when waste water liquid level, which rises to, approaches solid-liquid separator (12), light supply apparatus (13) is opened, closes inlet pipeline
(31), circulating pump (21) works on, and opens air inlet pipe (9), the air push waste water now blasted is in fluid bed Fenton's reaction
Area's internal circulation flow, by controlling flowmeter to make air mass flow be maintained at 200~1000mL/min；
(3) after liquid level reaches more than solid-liquid separator (12) and floods circulation interface (15), effluent part passes through circulation line
(2) reactor is re-entered into, now opens inlet pipeline (31) and dosing pipe (4), the H that will have been configured2O2The aqueous solution is from double
Oxygen water dosing pipe (42) is blown into reactor, and it is 5~10mL/min to control flow, blasts H after fluidized-bed reactor2O2's
Substance withdrawl syndrome is 0.001~0.01mol/L；
The FeSO that will have been configured simultaneously4The aqueous solution and/or the solid catalysis agent solution of iron load are from FeSO4Dosing pipe (41) drum
Enter into reactor, the H configured2O2H in the aqueous solution2O2With the FeSO configured4The aqueous solution and/or the solid of iron load
Fe in catalyst solution2+Material amount ratio be 5~20:1；The solid catalyst of the iron load is Fe2+Load capacity be 5~
10% solid catalyst；
Now even water distributor (11) water outlet keeps certain rate of climb, and liquid is in single baffle plate (14) two in fluidized-bed reactor
Side circulates, and solid catalyst, the iron filings of iron load are in fluidisation state；Fe2+With H2O2The Fe of oxidation reaction generation occurs3+With knot
The mode of crystalline substance precipitation adsorbs the solid catalyst and iron filings surface in iron load；
(4) after solid-liquid separator, the solid catalyst of iron filings and iron load in waste water is separated, the clear water after processing
Overflowed from the spout hole of outlet pipeline.
10. method as claimed in claim 8, it is characterised in that：The solid catalyst of described iron load with particle diameter be 2~
4mm granular activated carbon, brick grain or quartz sand is carrier, by preparing FeSO4Solution will using dipping calcining or coprecipitation
Fe2+Load in above-mentioned carrier, control Fe2+Load capacity is 5~10%, the solid catalyst of as described iron load.
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