CN103145277B - Device and process for mass transfer process for treating wastewater through supergravity enhanced electric Fenton method - Google Patents

Device and process for mass transfer process for treating wastewater through supergravity enhanced electric Fenton method Download PDF

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CN103145277B
CN103145277B CN201310101657.2A CN201310101657A CN103145277B CN 103145277 B CN103145277 B CN 103145277B CN 201310101657 A CN201310101657 A CN 201310101657A CN 103145277 B CN103145277 B CN 103145277B
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negative electrode
cylinder
waste water
anode
ripple
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CN103145277A (en
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高璟
刘有智
焦纬洲
祁贵生
袁志国
栗秀萍
申红艳
张巧玲
王建伟
刘引娣
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North University of China
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Abstract

The invention belongs to the technical field of water treatment, and in particular relates to a device and a process for a mass transfer process for treating wastewater through a supergravity enhanced electric Fenton method, aiming at solving the problem of limited mass transfer while treating wastewater through the conventional electric Fenton method. The device comprises a plurality of cylinder cathodes and cathode connecting discs as well as a plurality of corrugated cylinder anodes and anode connecting discs, wherein the corrugated cylinder anodes and the anode connecting discs are static relatively to a shell; the centers of the cathode connecting discs are connected with rotating shafts; intake holes are distributed on the cathode connecting discs; and gas circulating chambers are arranged at the bottoms of the cathode connecting discs. According to the process, a supergravity electric Fenton reaction system is formed through the rotating cathode connecting discs and cylinder cathodes as well as the static anode connecting discs and cylinder anodes, and inflated oxygen. The device and the process disclosed by the invention not only solve the problem of limited mass transfer in the conventional sacrificial anode electric Fenton technology application process, so as to improve treatment efficiency, but also the device is low in liquid holdup, low in load, small in equipment and low in energy consumption.

Description

Hypergravity strengthening Fenton method is processed device and the technique of the mass transfer process of waste water
Technical field
The invention belongs to the technical field of water treatment, be specifically related to a kind of device and technique of mass transfer process of hypergravity strengthening Fenton method processing waste water.
Background technology
The research of Fenton method starts from the eighties in 20th century.Up to the present, lot of domestic and foreign scholar adopts Fenton method to process various waste water, and has obtained certain effect.Fenton method is to produce Fe by the effect of impressed current 2+and H 2o 2, as the lasting source of Fenton reagent, there is series of chemical thus, make the detrimental impurity in waste water be transformed and be removed.Wherein H 2o 2at Fe 2+katalysis under can generate oxidation capacity very strong hydroxyl radical free radical OH, its oxidizing potential is up to 2.80V.OH also has very high electronegativity and Electron Affinities, and its electron affinity power reaches 569.3KJ, has very strong addition reaction characteristic, therefore organic very capable in degrading waste water, is specially adapted to the processing of biology or the waste water that generally chemical oxidation is difficult to prove effective.Fenton method can generate Fe in mat electrolysis process scene simultaneously 2+with H 2o 2, need not additional chemical reagent, and Fe 2+recyclable regenerative utilizes, and is efficient, cheap wastewater processing technology, is widely used in recent years processing the research of waste water process.
Along with the further investigation that people process waste water to Fenton method is found, on negative electrode and anode, there is respectively liberation of hydrogen and oxygen evolution reaction, the H of generation 2and O 2can be attached to electrode surface with the form of bubble and cause electrode useful area to reduce, hinder O 2become H in cathodic reduction 2o 2.O 2in waste water, mass transfer is obstructed, and this causes cathode surface to generate H 2o 2reduction reaction speed slow; And Fe in waste water 2+and H 2o 2in transmitting procedure, easily produce concentration polarization, this causes interionic mass transfer to be obstructed, and Fenton speed of response is slow, and side reaction increases, thereby processing efficiency reduction, energy consumption are increased.At present, many investigators are devoted to development to O 2generate H 2o 2process has high catalytic activity, large O 2the cathode material of contact area, and to O in waste water 2, Fe 2+and H 2o 2and the research of strengthening that participates in the mass transfer process between the ion of reaction is little.Therefore to process the technique of waste water mass transfer process and device thereof be to promote Fenton method to process one of gordian technique that waste water deeply develops to development strengthening Fenton method.
Summary of the invention
The limited difficult problem of mass transfer when the present invention processes waste water in order to solve traditional electrical Fenton method, provides a kind of hypergravity strengthening Fenton method to process device and the technique of the mass transfer process of waste water.
The present invention adopts following technical scheme to realize:
Hypergravity strengthening Fenton method is processed the device of the mass transfer process of waste water, comprise the stainless steel casing of included insulation layer, the built-in some cylinder negative electrodes of shell and negative electrode terminal pad and some ripple cylinder anodes and anodic bonding dish, ripple cylinder anode and the concentric alternative arrangement of cylinder negative electrode, each cylinder negative electrode bottom is connected in negative electrode terminal pad, each ripple cylinder anode top is connected in anodic bonding dish, between the free end of each cylinder negative electrode and anodic bonding dish and between the free end of each ripple cylinder anode and negative electrode terminal pad, all leave distance, ripple cylinder anode and anodic bonding dish opposite shell are static, negative electrode terminal pad center connects rotating shaft that can high speed rotating, on negative electrode terminal pad, be furnished with air inlet port, negative electrode terminal pad bottom arranges gas communication chamber, gas communication chamber is connected with the gas inlet tube arranging through shell, cover top portion is provided with gas outlet tube, the center drilling of anodic bonding dish connects the waste water inlet pipe arranging through shell, waste water inlet pipe is connected with waste water tank, outer casing bottom is provided with wastewater outlet pipe.
The ripple angle of bend of described ripple cylinder anode is 90 °, is to ensure the turbulence state of waste water on ripple cylinder electrode, on the high cylinder electrode of every 150mm, 5~10 of ripple numbers is set, ripple peak height 10mm~15mm.
Described cylinder negative electrode and ripple cylinder anode height equate, the distance of each cylinder cathode distance anodic bonding dish equates apart from the distance of negative electrode terminal pad with each ripple cylinder anode, its distance is 1/10~1/4 of cylinder heights, between each ripple cylinder anode and anodic bonding dish and between each cylinder negative electrode and negative electrode terminal pad, is and can be connected by free detachable.
Described ripple cylinder anode material is chosen leachable Fe 2+material, be iron or stainless material, cylinder cathode material adopts on graphite, stainless material or stainless steel and covers active-carbon fibre material.
Described air inlet port on negative electrode terminal pad radially, be uniformly distributed, percentage of open area 0.01%~0.03%, air inlet port on negative electrode terminal pad in the middle of each annular space forming between each connected cylinder negative electrode and each ripple cylinder anode, and near the inside and outside circumferential distribution of each cylinder negative electrode, the air inlet port of negative electrode terminal pad and upper layout thereof forms gas distributor.
The concentric drums ripple anode connecting on the anodic bonding dish of described concentric alternative arrangement and the number of the concentric drums negative electrode being connected on negative electrode terminal pad, determine according to retention time of sewage and uninterrupted, the size of reaction unit also can be determined thus.Between each ripple cylinder anode and anodic bonding dish and between each cylinder negative electrode and negative electrode terminal pad, all can be connected by free detachable, can change according to processing requirements the electrode of material requested.
Hypergravity strengthening Fenton method is processed the technique of the mass transfer process of waste water, the device that hypergravity strengthening Fenton method based on above-mentioned is processed the mass transfer process of waste water completes, utilize negative electrode terminal pad and cylinder negative electrode and static anodic bonding dish and the ripple cylinder anode of rotation, and the oxygen passing into composition hypergravity Fenton reaction system; Reactions steps is as follows:
In waste water, add acidic solution to regulate pH value in 2.5~3.5 scopes, build Elevated Gravity by adjusting rotary speed 500r/min ~ 1000r/min, the COD that removes every kilogram in every cubic metre of waste water need pass into 0.05m 3~0.1m 3oxygen, oxygen by gas communication chamber through air inlet port distribute laggard enter hypergravity Fenton method process in the device of waste water mass transfer process, under hypergravity effect, waste water by device center radially by hypergravity Fenton reaction system and then degraded; Waste water after treatment flows out from wastewater outlet pipe after being collected by the shell installing, or circular treatment, or enters next step processing, or discharge; After wastewater treatment, the gas producing in device is discharged by gas outlet tube.
Ripple cylinder anode of the present invention and the concentric alternative arrangement of cylinder negative electrode, rely on the negative electrode terminal pad and the concentric drums cathode rotary that are connected with rotating shaft to form super gravity field, form hypergravity Fenton reaction unit, strengthen the mass transfer process of waste water reaction with this, eliminate concentration polarization, improve current efficiency and processing efficiency.
The present invention adopts high-gravity technology strengthening Fenton method to process the mass transfer process of waste water.Soluble anode oxidation produces Fe 2+, see formula (1).The oxygen passing into is reduced into H on negative electrode 2o 2, see formula (4).The Fe that anode produces 2+h with negative electrode generation 2o 2under certain pH value condition, there is Fenton reaction and generate OH and Fe 3+, see formula (7).The OH wherein generating, by the organic matter degradation in waste water, is shown in formula (8); Fe in formula (7) 2+can pass through Fe 3+in cathodic reduction regeneration, see formula (5), also can with H 2o 2reaction generates, and sees formula (9) and formula (10), Fe like this 2+sustainable generation.O in formula (1) 2can provide by passing into oxygen, also can pass through H 2o produces in anodic oxidation, sees formula (2), H like this 2o 2can continue to produce at negative electrode, see formula (4), ensure that Fenton reaction continues to occur, the lasting generation of OH, be shown in formula (7).OH in formula (8) can be produced by formula (7), also can be by formula (3) H 2o produces in anodic oxidation.The active Fe being gone out by anode dissolution 2+with the Fe generating 3+can there is the adsorbing Fe of strong complexing (OH) by the paired organism of partial hydrolysis 2, Fe (OH) 3and nFe (OH) 2mFe (OH) 3(n, m=1,2 ...), see respectively formula (11), (12), (13), it has coagulation and throwing out, can effectively remove suspended substance and colloidal impurity in waste water.On negative electrode and anode, there is respectively liberation of hydrogen and oxygen evolution reaction simultaneously, see respectively formula (6) and (2).Under hypergravity effect, the O that anode generates 2can depart from fast anode surface, and become H in cathodic reduction 2o 2, become unfavorable into favourable; The H that negative electrode produces 2can not be attached to cathode surface and cause negative electrode effective electrode area to reduce, but can overflow fast and adsorb the granulometric impurity in waste water, then become the scum silica frost of easily removing and removed.
The chemical reaction relating to is as follows:
Anode: Fe-2e → Fe 2+(1)
2H 2o-4e → O 2+ 4H +(acidic medium) (2)
2H 2o-2e → 2OH+2H +(acidic medium) (3)
Negative electrode: O 2+ 2e+2H +→ H 2o 2(4)
Fe 3++e→Fe 2+ (5)
2H 2o+2e → 2OH -+ H 2(acidic medium) (6)
Fenton reaction: H 2o 2+ Fe 2+→ Fe 3++ OH -+ OH (7)
Organic matter degradation: OH+ organism → CO 2+ H 2o+ small organic molecule (8)
In solution: Fe 3++ H 2o 2→ Fe 2++ HO 2+ H +(9)
Fe 3++HO 2·→Fe 2++O 2+H + (10)
Fe 2++2OH -→Fe(OH) 2 (11)
Fe 3++3OH -→Fe(OH) 3 (12)
nFe(OH) 2+mFe(OH) 3→nFe(OH) 2·mFe(OH) 3(n,m=1,2…) (13)
Hypergravity Fenton method is processed the technique of waste water: regulate waste water ph, build Elevated Gravity by adjusting rotary speed, in super gravity field, waste water radially passes through multistage Fenton reaction unit by device center.Oxygen by gas communication chamber through air inlet port distribute laggard enter in hypergravity Fenton reaction unit.Above-mentioned chemical reaction (1)-(13) occur in device is degraded the organism in waste water.Waste water after treatment flows out from wastewater outlet pipe after being collected by the shell installing, or circular treatment, or enters next step processing, or discharge.The gas producing in process is discharged by gas outlet tube.
The relative prior art of the present invention has following beneficial effect:
1, each anode using in the present invention is ripple drum type brake.The electrode shape of ripple drum type brake is compared existing cylinder electrode, first, the electrode area that can settle in equal altitudes device increases, and electrode area utilization ratio is large, is applicable to sacrificial anode Fenton reaction process consumable anode material, that need to settle big area anode material; Secondly the less turbulence of wastewater streams in the time of ripple cylinder anode increases, and can play strengthening effect to the mass transfer process of the reaction relating to; Moreover the distance that wastewater streams is flowed through in the time of ripple cylinder anode increases, in device, the residence time extends, and can improve the processing efficiency of waste water.The oxygen passing in the present invention need become H in cathodic reduction 2o 2, therefore each cathode shape is conventional drum, to reduce the resistance to mass transfer of oxygen at electrode surface.In the research of Fenton method processing waste water, also there is not at present the electrode of this structure to use.
2, each ripple cylinder anode using in the present invention and conventional cylinder negative electrode are concentric, alternative arrangement, and such electrode structure makes electrode tow sides all can participate in reaction, and electrode area utilization ratio is large, and form multi-stage reacting device.It is moving that while waste water is also upper and lower alternating current, can play souring to electrode surface, can prevent the concentration polarization of electrode interface.
3, the ripple cylinder anode material using in the present invention is iron or stainless material, dissolves Fe to meet Fenton method by soluble anode electrode reaction 2+requirement, and existing supergravity multistage concentric cylinder type electrolytic reaction chooses the electrode that oxygen evolution potential is higher (as titanium electrode, ti-based coating electrode) and does anode, to prevent analysing oxygen competing reaction on electrolytic process reaction process Anodic.Treatment process difference, electrode materials is selected also different.What existing technique relied on is electrolysis tech, mainly by anodic oxidation organism, but anode is easily analysed oxygen competing reaction, thereby the oxygen of separating out can be attached to anode surface with the form of bubble reduces anode activity, affect electrolytic efficiency, so in order to prevent that the bubble on anode from adhering to, anodic bonding disk center connects the rotating shaft of high speed rotating to drive anode rotation proper.And technique of the present invention relates to Fenton reaction process, the O on negative electrode 2be reduced into H 2o 2reaction be to determine speed of response and can maintain reaction to continue the key of carrying out, in order to prevent the concentration polarization of cathode interface layer solution, negative electrode connection center connects the rotating shaft of high speed rotating to drive cathode rotary proper.The research that relies on electrode structure and electrode movement to build Elevated Gravity like this yet there are no in Fenton reaction process and uses.
4, hypergravity Fenton reaction unit of the present invention has been set up the relevant setting that passes into gas, the gas distributor forming as gas inlet tube, gas communication chamber, air inlet port and with negative electrode terminal pad.This structure can make device not be only applicable to electrolytic reaction, and is applicable to Fenton reaction, has expanded the range of application of device.The air inlet port wherein invented on negative electrode terminal pad radially, be uniformly distributed.For ensureing the physical strength of air input and negative electrode terminal pad, percentage of open area is controlled at 0.01%~0.03%.Air inlet port on negative electrode terminal pad in the middle of each annular space forming between each connected cylinder anode and each cylinder negative electrode, and near the circumferential distribution of each cylinder negative electrode.The air inlet port of negative electrode terminal pad and upper layout thereof forms gas distributor, when oxygen directly passes into without gas distributor, gas metropolitan moves vertically, gas distribution radially can be inhomogeneous, even can radial distribution short circuit, and the oxygen passing into after air inlet port in each concentric distribution rings distributes, can ensure Gas distribution radially evenly, especially in super gravity field, work as the used time of doing that is subject to centrifugal force, radial distribution can more be tending towards homogenizing, can farthest ensure that like this oxygen passing into reduction reaction occurs on each cylinder negative electrode and produces H 2o 2, utilization ratio and the H of raising oxygen 2o 2productivity, thereby raising processing efficiency, gas can be strengthened the turbulence intensity of waste water in the time that the air inlet port of each distribution rings sprays into simultaneously, the mass transfer process of strengthening reaction, avoids concentration polarization, and the present invention is in the time of design gas distributor, effectively utilize electrode terminal pad, gas distributor and electrode terminal pad are united two into one, simple in structure, cost of manufacture is low, can make reaction effect strengthen, production efficiency improve.
5, in the present invention, the material of crust of the device is stainless steel, the included insulation layer of shell, and existing conventional be synthetic glass shell.The technique that hypergravity Fenton method of the present invention is processed used water difficult to degradate need pass into gas in device, and so first the stopping property of synthetic glass shell, not as stainless steel, gas leak phenomenon can occur; Moreover in the time that the gas passing in equipment reaches certain tolerance, synthetic glass shell is easily split up, stainless steel casing can be avoided this problem.Use the stainless steel casing of included insulation layer to ensure to use safety.
6, concentric drums negative electrode and the negative electrode terminal pad of the static concentric ripple cylinder anode of the present invention and anodic bonding dish, rotation, and the oxygen passing into composition hypergravity Fenton reaction system.Rely on the powerful shearing force producing in super gravity field to make the linear velocity of the gas producing in Fenton reaction process be improved to accelerate the disengaging of bubble, maintain electrode effective activation area, improve the rate of mass transfer of electrode surface.The microcosmic mixed performance of high-gravity technology makes the Fe of anode dissolution simultaneously 2+h with negative electrode generation 2o 2concentration polarization in waste water transmitting procedure is eliminated, and also makes the mass transfer process between other ion between the two and in waste water be strengthened.Utilize this technique can make the processing efficiency of waste water improve.Utilize this device, can make the limited problem of mass transfer of traditional Fenton reaction unit be well solved.Also there are not at present the device of this structure and the application of the technique of this technology in wastewater treatment.
7, hypergravity Fenton method is processed waste water process, the Fenton method under normal gravity condition of comparing is processed waste water process, and in the time of rotating speed 500r/min ~ 1000r/min, bath voltage can reduce by 2% ~ 14%, treatment time can shorten 9% ~ 21%, and pollutants removal rate can improve 3%-12%.
In sum, electrode area utilization ratio, oxygen utilization rate and H in the technique of hypergravity Fenton method processing waste water and device 2o 2productivity all improve, not only can solve the limited difficult problem of mass transfer in traditional sacrificial anode Fenton technology application process, thereby improve processing efficiency, and in reaction unit liquid holdup little, load low, equipment is little, energy consumption is low, is applicable to operation, scale processing continuously, has broad application prospects.
Brief description of the drawings
Fig. 1 is the process flow sheet that hypergravity Fenton method is processed waste water,
Fig. 2 is hypergravity Fenton reaction unit sectional view,
Fig. 3 is electrode and electrode terminal pad vertical view,
In figure: 1-hypergravity Fenton reaction unit, 2-valve I, 3-electrochemical reaction Controlling System or D.C. regulated power supply, 4-valve II, 5-waste water tank, 6-valve III, 7-pump, 8-valve IV, 10-valve V, 9-under meter.
1.1-shell, 1.2-anodic bonding dish, 1.3-gas inlet tube, 1.4-ripple cylinder anode, 1.5-cylinder negative electrode, 1.6-negative electrode terminal pad, 1.7-waste water inlet pipe, 1.8-gas outlet tube, 1.9-air inlet port, 1.10-gas communication chamber, 1.11-wastewater outlet pipe, 1.12-rotating shaft, 1.13-slip ring.
Embodiment
Hypergravity Fenton reaction unit comprises: static anodic bonding dish and the leachable Fe of electrolysis 2+ripple cylinder anode, rotation negative electrode terminal pad and cylinder negative electrode, pass into oxygen and generate H in cathodic reduction 2o 2, form thus hypergravity Fenton reaction unit.Ripple cylinder anode and the concentric alternative arrangement of cylinder negative electrode, form multistage Fenton reaction unit.In reaction process, waste water enters multistage Fenton reaction unit continuously, and ripple cylinder anode and anodic bonding dish are stationary state, and cylinder negative electrode and negative electrode terminal pad be high speed rotating under central rotating shaft drives, and forms supergravity multistage Fenton reaction process.The construction of Elevated Gravity can be strengthened the mass transfer process in wastewater degradation.
Furtherly: as Fig. 1, Fig. 2, shown in Fig. 3, hypergravity strengthening Fenton method is processed the device of the mass transfer process of waste water, comprise the stainless steel casing 1.1 of included insulation layer, the built-in some cylinder negative electrodes 1.4 of shell 1.1 and negative electrode terminal pad 1.2 and some ripple cylinder anodes 1.5 and anodic bonding dish 1.6, ripple cylinder anode 1.5 and the concentric alternative arrangement of cylinder negative electrode 1.4, each cylinder negative electrode 1.4 bottoms are connected in negative electrode terminal pad 1.2, each ripple cylinder anode 1.5 tops are connected in anodic bonding dish 1.6, between the free end of each cylinder negative electrode 1.4 and anodic bonding dish 1.6 and between the free end of each ripple cylinder anode 1.5 and negative electrode terminal pad 1.2, all leave distance, ripple cylinder anode 1.5 and anodic bonding dish 1.6 opposite shell 1.1 are static, negative electrode terminal pad 1.2 centers connect rotating shaft 1.12 that can high speed rotating, on negative electrode terminal pad 1.2, be furnished with air inlet port 1.9, negative electrode terminal pad 1.2 bottoms arrange gas communication chamber 1.10, gas communication chamber 1.10 is connected with the gas inlet tube 1.3 arranging through shell 1.1, shell 1.1 tops are provided with gas outlet tube 1.8, the center drilling of anodic bonding dish 1.6 connects the waste water inlet pipe 1.7 arranging through shell 1.1, waste water inlet pipe 1.7 is connected with waste water tank 5, shell 1.1 bottoms are provided with wastewater outlet pipe 1.11.
The ripple angle of bend of described ripple cylinder anode 1.5 is 90 °, on the high cylinder electrode of every 150mm, 5~10 of ripple numbers is set, ripple peak height 10mm~15mm.
Described cylinder negative electrode 1.4 is highly equal with ripple cylinder anode 1.5, each cylinder negative electrode 1.4 equates apart from the distance of negative electrode terminal pad 1.2 with each ripple cylinder anode 1.5 apart from the distance of anodic bonding dish 1.6, its distance is 1/10~1/4 of cylinder heights, between each ripple cylinder anode 1.5 and anodic bonding dish 1.6 and between each cylinder negative electrode 1.4 and negative electrode terminal pad 1.2, is and can be connected by free detachable.
The described leachable Fe of ripple cylinder anode 1.5 material selection 2+material, be iron or stainless material, cylinder cathode material 1.4 adopts on graphite, stainless material or stainless steel and covers active-carbon fibre material.
Described air inlet port 1.9 on negative electrode terminal pad 1.2 radially, be uniformly distributed, percentage of open area 0.01%~0.03%, air inlet port 1.9 on negative electrode terminal pad 1.2 between each connected cylinder negative electrode 1.4 and each ripple cylinder anode 1.5 form each annular space in the middle of, and near the inside and outside circumferential distribution of each cylinder negative electrode 1.4, the air inlet port 1.9 of negative electrode terminal pad 1.2 and upper layout thereof forms gas distributor.
In hypergravity Fenton reaction unit 1, rotating shaft 1.12 drives anodic bonding dish 1.2 to rotate, and carrys out the adults power factor by adjusting rotary speed.Negative electrode terminal pad 1.6 is connected with waste water inlet pipe 1.7, is static fixing.Anode 1.4 and negative electrode 1.5 wiring are connected to respectively on the positive and negative electrode of electrochemical reaction Controlling System or D.C. regulated power supply 3 by slip ring 1.13.
Furtherly, hypergravity strengthening Fenton method is processed the technique of the mass transfer process of waste water, and step is as follows: in waste water, add acidic cpd to regulate initial pH on wastewater value to 3 left and right.Open after electrochemical reaction Controlling System or D.C. regulated power supply 3, waste water pressurizes, after valve 8 adjust fluxes, under meter 9 metered flows, is entered in hypergravity Fenton reaction unit 1 by waste water inlet pipe 1.7 through waste water tank 5, pump 7.Oxygen enters gas communication chamber 1.10 by Open valve 2 from gas inlet tube 1.3, enters in hypergravity Fenton reaction unit 1 through gas distributor 1.9.On the negative electrode 1.5 that the gas passing into connects on negative electrode terminal pad 1.6, there is reduction reaction and generate H 2o 2, on the anode 1.4 connecting on anodic bonding dish 1.2, there is oxidizing reaction and generate Fe 2+thereby, forming thus Fenton reagent degrading waste water, other reaction simultaneously occurring in chemical reaction (1)-(13) is degraded the organism in waste water.Carry out the adults power factor with reinforcing mass transfer process by adjusting rotary speed.Waste water after degraded is collected through shell 1.1, is flowed out, or discharges through valve 4, or flow to waste water tank 5 circulation degrading waste waters by wastewater outlet pipe 1.11.After wastewater treatment finishes, the waste water in waste water tank 5 discharges through valve 6, and gas is discharged or collected by gas outlet tube 1.8, valve 10.
example 1: hypergravity Fenton method treatment of Nitrobenzene waste water.
The shell of hypergravity Fenton reaction unit is made up of stainless material, insulation liner layer.Internal diameter 300mm, high 200mm.Ripple cylinder anode material is iron with one heart, concentric drums cathode material is graphite, anodic-cathodic spacing 5mm, 6 of negative electrode or anode electrode numbers, electrode height 100mm, cylinder negative electrode equates for 10mm apart from negative electrode terminal pad distance with ripple cylinder anode apart from anodic bonding dish distance.
In nitrobenzene waste water, initial COD content is 2740mg/L.Before processing, in waste water tank, add H 2sO 4it is 3 that solution regulates initial pH on wastewater.Open D.C. regulated power supply, waste water is entered in hypergravity Fenton reaction unit by waste water inlet pipe.Pass into oxygen, after tolerance reaches and will aspire for stability, adjusting rotary speed 680r/min.After reaction, wastewater streams continues circular treatment in waste water tank.Process after 20min, waste water COD clearance can reach 74%.And under normal gravity condition, process after 30min waste water COD clearance only 58%.Adopt hypergravity Fenton reaction process and device can strengthen under normal gravity condition, i.e. the mass transfer process of traditional electrical Fenton reaction, while making to process waste water, the treatment time shortens, and treatment effect improves.
example 2: hypergravity Fenton method is processed containing organic phosphorous insecticide waste water.
The shell of hypergravity Fenton reaction unit is made up of stainless material, insulation liner layer.Internal diameter 400mm, high 240mm.Ripple cylinder anode material is iron with one heart, concentric drums cathode material is to cover active-carbon fibre material on stainless steel, anodic-cathodic spacing 5mm, 6 of negative electrode or anode electrode numbers, electrode height 120mm, cylinder negative electrode equates for 10mm apart from negative electrode terminal pad distance with ripple cylinder anode apart from anodic bonding dish distance.
In organic phosphorous insecticide waste water, initial COD content is 4500mg/L.Before processing, in waste water tank, add H 2sO 4it is 3.5 that solution regulates initial pH on wastewater.Open D.C. regulated power supply, waste water is entered in hypergravity Fenton reaction unit by waste water inlet pipe.Pass into oxygen, after tolerance reaches and will aspire for stability, adjusting rotary speed 500r/min.After reaction, wastewater streams continues circular treatment in waste water tank.Process after 20min, waste water COD clearance can reach 81.3%.And under normal gravity condition, process after 30min waste water COD clearance only 74%.Adopt hypergravity Fenton reaction process and device can strengthen under normal gravity condition, i.e. the mass transfer process of traditional electrical Fenton reaction, time shorten while making to process waste water, effect improves.
example 3: hypergravity Fenton method is processed petrochemical complex phenolic wastewater.
The shell of hypergravity Fenton reaction unit is made up of stainless material, insulation liner layer.Internal diameter 200mm, high 140mm.Ripple cylinder anode material is iron with one heart, concentric drums cathode material is graphite, anodic-cathodic spacing 5mm, 4 of negative electrode or anode electrode numbers, electrode height 80mm, cylinder negative electrode equates for 8mm apart from negative electrode terminal pad distance with ripple cylinder anode apart from anodic bonding dish distance.
In petrochemical complex phenolic wastewater, initial COD content is 640mg/L.Before processing, in waste water tank, add H 2sO 4it is 2.5 left and right that solution regulates initial pH on wastewater.Open D.C. regulated power supply, waste water is entered in hypergravity Fenton reaction unit by waste water inlet pipe.Pass into oxygen, after tolerance reaches and will aspire for stability, adjusting rotary speed 1000r/min.After reaction, wastewater streams continues circular treatment in waste water tank.Process after 20min, waste water COD clearance can reach 77.3%.And under normal gravity condition, process after 30min waste water COD clearance only 61.5%.Adopt hypergravity Fenton reaction process and device can strengthen the mass transfer process of traditional electrical Fenton reaction, make to process waste water time shorten, effect improves.

Claims (5)

1. the device of the mass transfer process of a hypergravity strengthening Fenton method processing waste water, it is characterized in that comprising the stainless steel casing (1.1) of included insulation layer, the built-in some cylinder negative electrodes of shell (1.1) (1.4) and negative electrode terminal pad (1.2) and some ripple cylinder anodes (1.5) and anodic bonding dish (1.6), ripple cylinder anode (1.5) and cylinder negative electrode (1.4) be alternative arrangement with one heart, each cylinder negative electrode (1.4) bottom is connected in negative electrode terminal pad (1.2), each ripple cylinder anode (1.5) top is connected in anodic bonding dish (1.6), between the free end of each cylinder negative electrode (1.4) and anodic bonding dish (1.6) and between the free end of each ripple cylinder anode (1.5) and negative electrode terminal pad (1.2), all leave distance, ripple cylinder anode (1.5) and anodic bonding dish (1.6) opposite shell (1.1) are static, negative electrode terminal pad (1.2) center connects rotating shaft (1.12) that can high speed rotating, on negative electrode terminal pad (1.2), be furnished with air inlet port (1.9), negative electrode terminal pad (1.2) bottom arranges gas communication chamber (1.10), gas communication chamber (1.10) is connected with the gas inlet tube (1.3) arranging through shell (1.1), shell (1.1) top is provided with gas outlet tube (1.8), the center drilling of anodic bonding dish (1.6) connects the waste water inlet pipe (1.7) arranging through shell (1.1), waste water inlet pipe (1.7) is connected with waste water tank (5), shell (1.1) bottom is provided with wastewater outlet pipe (1.11), the ripple angle of bend of described ripple cylinder anode (1.5) is 90 °, on the high cylinder electrode of every 150mm, 5~10 of ripple numbers is set, ripple peak height 10mm~15mm.
2. hypergravity strengthening Fenton method according to claim 1 is processed the device of the mass transfer process of waste water, it is characterized in that described cylinder negative electrode (1.4) is highly equal with ripple cylinder anode (1.5), each cylinder negative electrode (1.4) equates apart from the distance of negative electrode terminal pad (1.2) with each ripple cylinder anode (1.5) apart from the distance of anodic bonding dish (1.6), its distance is 1/10~1/4 of cylinder heights, between each ripple cylinder anode (1.5) and anodic bonding dish (1.6) and between each cylinder negative electrode (1.4) and negative electrode terminal pad (1.2), be and can be connected by free detachable.
3. hypergravity strengthening Fenton method according to claim 1 and 2 is processed the device of the mass transfer process of waste water, it is characterized in that the described leachable Fe of ripple cylinder anode (1.5) material selection 2+material, be iron or stainless material, cylinder cathode material (1.4) adopts on graphite, stainless material or stainless steel and covers active-carbon fibre material.
4. hypergravity strengthening Fenton method according to claim 3 is processed the device of the mass transfer process of waste water, it is characterized in that described air inlet port (1.9) on negative electrode terminal pad (1.2) radially, be uniformly distributed, percentage of open area 0.01%~0.03%, air inlet port (1.9) is positioned in the middle of each annular space forming between each connected cylinder negative electrode (1.4) and each ripple cylinder anode (1.5) on negative electrode terminal pad (1.2), and near the inside and outside circumferential distribution of each cylinder negative electrode (1.4), the air inlet port (1.9) of negative electrode terminal pad (1.2) and upper layout thereof forms gas distributor.
5. the technique of the mass transfer process of a hypergravity strengthening Fenton method processing waste water, the device of processing the mass transfer process of waste water based on hypergravity strengthening Fenton method as claimed in claim 4 completes, it is characterized in that utilizing negative electrode terminal pad (1.2) and cylinder negative electrode (1.4) and static anodic bonding dish (1.6) and the ripple cylinder anode (1.5) of rotation, and the oxygen passing into composition hypergravity Fenton reaction system; Reactions steps is as follows:
In waste water, add acidic solution to regulate pH value in 2.5~3.5 scopes, build Elevated Gravity by adjusting rotary speed 500r/min ~ 1000r/min, the COD that removes every kilogram in every cubic metre of waste water need pass into 0.05m 3~0.1m 3oxygen, oxygen by gas communication chamber through air inlet port distribute laggard enter hypergravity Fenton method process in the device of waste water mass transfer process, under hypergravity effect, waste water by device center radially by hypergravity Fenton reaction system and then degraded; Waste water after treatment flows out from wastewater outlet pipe after being collected by the shell installing, or circular treatment, or enters next step processing, or discharge; After wastewater treatment, the gas producing in device is discharged by gas outlet tube.
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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2635680Y (en) * 2003-06-05 2004-08-25 张惠明 Corrugated plate multi-trough piling type electrolytic tank
CN101787555A (en) * 2010-01-14 2010-07-28 中北大学 Continuously-operated supergravity multistage concentric cylinder type electrolytic reaction device and process thereof
CN101798130A (en) * 2010-04-02 2010-08-11 中国科学院苏州纳米技术与纳米仿生研究所 Wastewater treatment method based on electro-Fenton reaction
CN102070230A (en) * 2010-12-10 2011-05-25 华中师范大学 Method for removing organic matters in water by utilizing three-dimensional electrode electro-fenton and device thereof
CN201932937U (en) * 2011-02-23 2011-08-17 南京赛佳环保实业有限公司 Waste water treatment device using electro-Fenton reaction
CN102531107A (en) * 2011-12-28 2012-07-04 青岛科技大学 Electrochemical advanced oxidation system and electrochemical advanced oxidation method for treating organic waste water difficult to degrade
CN102633322A (en) * 2012-04-17 2012-08-15 西安建筑科技大学 Semi-coke waste water pretreatment method based on Electro-Fenton oxidization technology
CN203128267U (en) * 2013-03-27 2013-08-14 中北大学 Device for super-gravity reinforcing mass transfer process of wastewater treatment through electro-Fenton method

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004181329A (en) * 2002-12-02 2004-07-02 Kurita Water Ind Ltd Wastewater treatment method and apparatus therefor

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2635680Y (en) * 2003-06-05 2004-08-25 张惠明 Corrugated plate multi-trough piling type electrolytic tank
CN101787555A (en) * 2010-01-14 2010-07-28 中北大学 Continuously-operated supergravity multistage concentric cylinder type electrolytic reaction device and process thereof
CN101798130A (en) * 2010-04-02 2010-08-11 中国科学院苏州纳米技术与纳米仿生研究所 Wastewater treatment method based on electro-Fenton reaction
CN102070230A (en) * 2010-12-10 2011-05-25 华中师范大学 Method for removing organic matters in water by utilizing three-dimensional electrode electro-fenton and device thereof
CN201932937U (en) * 2011-02-23 2011-08-17 南京赛佳环保实业有限公司 Waste water treatment device using electro-Fenton reaction
CN102531107A (en) * 2011-12-28 2012-07-04 青岛科技大学 Electrochemical advanced oxidation system and electrochemical advanced oxidation method for treating organic waste water difficult to degrade
CN102633322A (en) * 2012-04-17 2012-08-15 西安建筑科技大学 Semi-coke waste water pretreatment method based on Electro-Fenton oxidization technology
CN203128267U (en) * 2013-03-27 2013-08-14 中北大学 Device for super-gravity reinforcing mass transfer process of wastewater treatment through electro-Fenton method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JP特开2004-181329A 2004.07.02

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