CN208603800U - A kind of Fenton fluidized bed for sewage treatment - Google Patents
A kind of Fenton fluidized bed for sewage treatment Download PDFInfo
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- CN208603800U CN208603800U CN201820783141.9U CN201820783141U CN208603800U CN 208603800 U CN208603800 U CN 208603800U CN 201820783141 U CN201820783141 U CN 201820783141U CN 208603800 U CN208603800 U CN 208603800U
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- fluidized bed
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- fenton
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- circulating pump
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Abstract
The utility model discloses a kind of Fenton fluidized beds for sewage treatment, including the fluidized bed cylinder being vertically arranged, it is disposed with from below to up in the fluidized bed cylinder: reaction zone, the fluidised bed zones Fe and Mn, buffer area, crystal retention separator, settling section and overflow area, it is respectively equipped with support frame in the fluidised bed zones Fe and Mn and crystal retention separator bottom, Fenton fluidized bed further includes water inlet pipe, outlet pipe, exhaust pipe, venting pipe valve, dioxygen water pipe, ferrous sulfate pipe and circulator.Fenton fluidized bed will be by anaerobic and aerobic treated sedimentation basin water outlet, by recycling in the multiphase of Fenton fluidized bed and fluidized bed Fenton oxidation acts on, so that the organic matter for being finally difficult to be biodegradable in waste water is removed by Strong oxdiative.
Description
Technical field
The utility model relates to sewage treatment, in particular to a kind of Fenton fluidized bed plant for sewage treatment.
Background technique
Fenton chemical oxidization method is to react the principle for generating hydroxyl free radical with ferrous ion using hydrogen peroxide, carries out oxygen
The reaction for changing organic pollutant, is a kind of advanced oxidation processing technique.Fenton fluidized bed is made using the mode of fluidized bed
Ferric iron caused by Fenton method is largely able to crystallize or precipitate to be coated on the carrier surface of fluidized bed, is a knot
It has closed with phase chemical oxidation, out-phase chemical oxidation, fluidized bed crystallization and Fe (OH)3The functions such as reduction of dissolved new technology.
Traditional Fenton oxidation method has been made significantly to improve by this technology, can so reduce using tradition Fenton method and generate
A large amount of chemical sludge, while having the effect of heterocatalysis in the ferriferous oxide that carrier surface is formed, and the mould of fluidized bed
Formula also promotes chemical oxidation reaction and mass-transfer efficiency, promotes COD removal rate.Its water outlet after reacting, after pH value adjusts
Iron containing sludge can be generated.Selecting another advantage of this system is to adjust using hydrogen peroxide dosage, adjusts the removal amount of COD.Such as
The COD concentration of emission of waste water will can be effectively controlled in this.
For generating dyeing waste water in printing and dyeing production, it is 800~1200mg/L that water quality indicator, which is COD, coloration is 128~
256 times, pH is in 7-10, and temperature is at 30~40 DEG C.By traditional anaerobic and aerobic treated secondary clarifier effluent, water quality indicator
It is 100~120mg/L for COD, for pH in 7-8, coloration is 64~128 times, and the method traditional to such waste water is usually in end
After adding PAC and PAM progress coagulation or flocculation reaction deposition processing again, COD is discharged in 60~70mg/L, is difficult to accomplish COD's
Minimum discharge (COD < 50mg/L), treatment effeciency is not high.
Utility model content
In order to solve above-mentioned problem of the prior art, according to ferrous ion (Fe2+) and the catalysis of hydrogen peroxide generation chain type is instead
Hydroxyl radical free radical should be generated, there is stronger oxidability, oxidizing potential is up to 2.80V, is only second to fluorine.Ferrous ion (Fe2 +) and hydrogen peroxide be known as Fenton reagent, it can in the oxidized waste water of non-selectivity difficult for biological degradation or general chemical oxidizing agent it is difficult
With most of organic matters of oxidation.The utility model uses Fenton fluidized bed, to by anaerobic and aerobic treated secondary settling tank
Water outlet has carried out the processing of depth advanced oxidation, realizes dyeing waste water minimum discharge.
In order to solve the above technical problems, the technical solution of the utility model is: a kind of Fenton fluidisation for sewage treatment
Bed, including the fluidized bed cylinder being vertically arranged, be disposed with from below to up in the fluidized bed cylinder: reaction zone, Fe and
The fluidised bed zones Mn, buffer area, crystal retention separator, settling section and overflow area, in the fluidised bed zones Fe and Mn and crystal retention point
It is respectively equipped with support frame from device bottom,
Fenton fluidized bed further includes water inlet pipe, outlet pipe, exhaust pipe, venting pipe valve, dioxygen water pipe, ferrous sulfate pipe and follows
Loop device, the above pipe material are 316L material；
The water inlet pipe, dioxygen water pipe, ferrous sulfate pipe are passed through the reaction zone, and install electromagnetic flowmeter, count respectively
Reaction solution is poured into reaction zone in certain proportion by amount；The outlet pipe is set to the bottom of the overflow area, and exhaust pipe is set to stream
Change the top of bed cylinder, venting pipe valve is set to the bottom of fluidized bed cylinder,
The circulator is located between reaction zone and settling section, is managed, is connected clear after the circulating pump including connecting reaction zone
The circulating pump of pipe and circulating pump front tube after the circulating pump front tube in clear area, and the connection circulating pump.
Preferably, the bottom of the fluidized bed cylinder is taper bottom structure.
Preferably, in the solid particle that the fluidised bed zones Fe and Mn include Zero-valent Iron Fe and Mn, partial size is 3-5mm particle
It is spherical.
Preferably, fluidized bed cylinder is that 316L steel plate welding production forms.
Preferably, support frame is constituted using the channel steel of 316L material, and support frame body is network, and outer ring is annular,
Support frame is used for placing response raw material.
The method of Fenton fluidized bed processing waste water comprising following steps:
(1) sewage is pumped by elevator pump and enters Fenton fluidized bed by water inlet pipe,
(2) hydrogen peroxide and ferrous sulfate pass through dioxygen water pipe respectively and ferrous sulfate pipe enters Fenton fluidized bed, with sewage
Hybrid reaction,
(3) positioned at the circulating pump front tube of eminence, pipe squeezes into Fenton fluidized bed, the above dirt after circulating pump is by circulating pump
Water and medicament are discharged by reaction zone, the fluidised bed zones Fe and Mn, buffer area, crystal retention separator, settling section from outlet pipe,
(4) VOC (volatile organic waste gas) discharge that the exhaust pipe positioned at top generates Fenton fluidized bed, is located at bottom
Venting pipe valve can remove Fenton fluidized-bed bottom precipitating SS (suspended matter).
The clear water of crystal retention separator flows back into water distributor by circulating pump, and regurgitant volume is 1.2~1.5 times of inflow,
Realize the upflow velocity of reaction zone in Fenton fluidized bed in 15~20m/h.
Sewage enters buffer area after Fe (iron) and Mn (manganese) fluidized bed, adjusts the fluidised form of gentle dirt removal water, then into
Enter crystal retention separator, is reacted in unreacted Fe (iron) and Mn (manganese) crystal retention separator using 6 grades of bafflings, then returned
The bottom of Fe (iron) and Mn (manganese) fluidized bed are fallen on, crystal retains separator water outlet and enters settling section, and settling section is natural sedimentation
Mode collects subsequently into effluent weir, drains into follow up device by outlet pipe.
Preferably, the Fenton fluidized bed nominal residence time is 20~25min.
Fenton fluidized-bed bottom is equipped with conical bottom, and by the effect of circulating pump, the hydrogen peroxide and sulfuric acid of waste water and addition are sub-
Iron medicament can come into full contact with, and be reacted using ferrous iron and hydrogen peroxide, and catalysis generates hydroxyl radical free radical, utilize hydroxyl radical free radical
Strong oxdiative ability removes the hardly degraded organic substance in waste water.
By the reaction zone of Fenton fluidized bed after addition hydrogen peroxide and ferrous sulfate, Fe (iron) and Mn (manganese) stream is passed through
The area Hua Chuan is occurred using the acidity and simple substance Fe of sewage, produces ferrous iron, while accelerating divalent using the catalytic action of simple substance Mn
The generation of iron.The ferrous iron of new production is reacted with free hydrogen peroxide further occurrence catalysis generates hydroxyl radical free radical, and degradation is dirty
Organic cod in water.Sewage enters buffer area after Fe (iron) and Mn (manganese) fluidised bed zones, adjusts the stream of gentle dirt removal water
State retains separator subsequently into crystal, utilizes 6 grades of bafflings anti-in unreacted Fe (iron) and Mn (manganese) crystal retention separator
It answers, then falls back to the bottom of Fe (iron) and Mn (manganese) fluidised bed zones.Crystal retains separator water outlet and enters natural sedimentation area, so
Enter effluent weir afterwards to collect, degassing pond is drained by outlet pipe.
The utility model has the advantages that: one kind of the utility model is used for sewage treatment Fenton fluidized bed (FFB), will be through
Anaerobic and aerobic are crossed treated sedimentation basin water outlet, passes through circulation and fluidized bed Fenton oxidation in the multiphase of Fenton fluidized bed and make
With so that the organic matter for being finally difficult to be biodegradable in waste water is oxidized removing.Fenton fluidized bed has occupation area of equipment
Small, mass transfer effect is good, and reaction speed is fast, and low energy consumption, effectively reduces the operating cost of wastewater treatment, waste water can after processing is biochemical
Ensure that COD, aniline, coloration etc. reach discharge standard.Sedimentation basin water outlet is after the processing of Fenton fluidized-bed process, and COD is 100
~120mg/L or so is reduced to 40~50mg/L, and aniline is reduced to from 2.0~2.5mg/L and is not detected, so that it is useless to realize printing and dyeing
The minimum discharge of water (COD < 50mg/L, aniline must not detect).
Detailed description of the invention
The utility model is further described with reference to the accompanying drawings and embodiments:
Fig. 1 is an embodiment of the present invention Fenton fluidized bed elevational schematic view.
Fig. 2 is an embodiment of the present invention Fenton fluidized bed plan view.
Specific embodiment
The utility model Fenton fluidized bed elevational schematic view as depicted in figs. 1 and 2 and plan view, Fenton fluidized bed include
The fluidized bed cylinder 10 being vertically arranged is disposed with from below to up in the fluidized bed cylinder: reaction zone 11, Fe and Mn stream
The area Hua Chuan 12, buffer area 13, crystal retention separator 14, settling section 15 and overflow area 16, in the fluidised bed zones Fe and Mn 12 and crystalline substance
Body retention 14 bottom of separator is respectively equipped with support frame 17, and Fenton fluidized bed further includes water inlet pipe 22, outlet pipe 25, exhaust pipe
26, venting pipe valve 27, dioxygen water pipe 23, ferrous sulfate pipe 24 and circulator 21, the above pipe material are 316L material；Institute
It states circulator 21 to be located between reaction zone 11 and settling section 15, pipe 213 after the circulating pump including connecting reaction zone 11 connects clear
After the circulating pump front tube 211 in clear area 15, and the connection circulating pump before pipe 213 and circulating pump 211 pipes circulating pump 212, it is above
Pipe material is 316L material；The water inlet pipe 22, dioxygen water pipe 23 and ferrous sulfate pipe 24 are passed through the reaction zone 11,
And installation electromagnetic flowmeter, it measures reaction solution is poured into reaction zone 11 in certain proportion respectively；The outlet pipe 25 is set to institute
The bottom of overflow area 16 is stated, exhaust pipe 26 is set to the top of fluidized bed cylinder 10, and venting pipe valve 27 is set to fluidized bed cylinder 10
Bottom.
As shown in Figure 1, sewage is pumped by elevator pump, enter Fenton fluidized bed, hydrogen peroxide and sulphur by water inlet pipe 22
Sour ferrous iron enters Fenton fluidized bed by dioxygen water pipe 23 and ferrous sulfate pipe 24 respectively, with sewage hybrid reaction, is located at eminence
Circulating pump front tube 211 Fenton fluidized bed, the above sewage and medicament warp are squeezed by pipe 213 after circulating pump by circulating pump 212
Reaction zone 11, Fe (iron) and Mn (manganese) fluidised bed zones 12, buffer area 13, crystal retention separator 14, settling section 15 are crossed, from out
Water pipe 25 excludes.Exhaust pipe 26 positioned at top is by the VOC (volatile organic waste gas is discharged in time) that Fenton fluidized bed generates, position
Venting pipe valve 27 in bottom can remove the SS (suspended matter) etc. of Fenton fluidized-bed bottom precipitating；
Fenton fluidized-bed bottom is equipped with conical bottom, and by the effect of circulating pump, the hydrogen peroxide and sulfuric acid of waste water and addition are sub-
Iron medicament can come into full contact with, and be reacted using ferrous iron and hydrogen peroxide, and catalysis generates hydroxyl radical free radical, utilize hydroxyl radical free radical
Strong oxdiative ability removes the hardly degraded organic substance in waste water.The pH of Fenton fluidized bed water outlet is 3~3.5 or so, Fenton fluidized bed
Reaction nominal time is 20~25min, and the clear water of crystal retention separator flows back into water distributor by circulating pump, regurgitant volume be into
1.2~1.5 times of water, the upflow velocity of reaction zone in Fenton fluidized bed is realized in 15~20m/h, biggish upflow velocity makes
The service efficiency of hydrogen peroxide and ferrous sulfate medicament maximizes.Sewage after reaction zone passes through Fe (iron) and Mn (manganese)
Fluidised bed zones are occurred using the acidity and simple substance Fe of sewage, produce ferrous iron, while accelerating two using the catalytic action of simple substance Mn
The generation of valence iron.Comparison shows if not having catalysis reaction with MnO2.The ferrous iron of new production and free hydrogen peroxide are into one
Step occurs catalysis reaction and generates hydroxyl radical free radical, and the organic cod in sewage of degrading, sewage is fluidized by Fe (iron) and Mn (manganese)
Bed enters buffer area behind area, adjusts the fluidised form of gentle dirt removal water, retains separator subsequently into crystal, unreacted Fe (iron) and
Mn (manganese) crystal retains in separator to be reacted using 6 grades of bafflings, then falls back to the bottom of Fe (iron) and Mn (manganese) fluidized bed.It is brilliant
Body retains separator water outlet and enters natural sedimentation area, collects subsequently into effluent weir, drains into degassing pond by outlet pipe.
COD 100~120mg/L the sewage after biochemical treatment, when by Fenton fluidized-bed process, every 1L waste water
0.18~0.20mL hydrogen peroxide (27% volumetric concentration) and 0.20~0.22g ferrous sulfate is added, COD can be reduced to 40~
50mg/L；When 0.30~0.35mL hydrogen peroxide (27% volumetric concentration) and 0.30~0.35g ferrous sulfate is added in every 1L waste water,
COD can be reduced to 30~40mg/L or so, be further added by hydrogen peroxide and ferrous sulfate, COD can be raised to from 30~40mg/L to
35~45mg/L or so is unfavorable for the progress of Fenton's reaction；When every 1L waste water reduces additional amount to 0.15~0.18mL hydrogen peroxide
When (27% volumetric concentration) and 0.16~0.20g ferrous sulfate, COD is raised to from 40~50mg/L to 50mg/L, is equally unfavorable for
The progress of Fenton's reaction.
After the processing of Fenton fluidized-bed process, COD is reduced to 40~50mg/L, aniline in 100~120mg/L or so
It is reduced to and is not detected from 2.0~2.5mg/L, to realize the minimum discharge of waste water (COD < 50mg/L, aniline are not detected).
The above embodiments are only for explaining the technical ideas and features of the present invention, and its object is to allow be familiar with technique
People can understand the content of the utility model and implement accordingly, do not limit the protection scope of the present invention.It is all
According to the modification that the Spirit Essence of the utility model main technical schemes is done, should all cover in the protection scope of the utility model
Within.
Claims (5)
1. a kind of Fenton fluidized bed for sewage treatment, it is characterised in that: the fluidized bed cylinder including cylinder unit, described
It is disposed with from below to up in fluidized bed cylinder: reaction zone, Fe and Mn fluidized bed and support frame, buffer area, crystal retention point
From device and support frame, settling section and overflow area composition, support is equipped in Fe and Mn fluidized bed and crystal retention separator bottom
Frame, support frame are constituted using the channel steel of 316L material, and outer ring is annular, and interior is cross framework；
Further include water inlet pipe, outlet pipe, exhaust pipe, venting pipe valve, dioxygen water pipe, ferrous sulfate pipe and circulator, it is described into
Water pipe, dioxygen water pipe, ferrous sulfate pipe are passed through the reaction zone；The outlet pipe is set to the bottom of the overflow area, exhaust pipe
Set on the top of fluidized bed cylinder, venting pipe valve is set to the bottom of fluidized bed cylinder,
The circulator is located between reaction zone and settling section, is managed, is connected clear after the circulating pump including connecting reaction zone bottom
The circulating pump of pipe and circulating pump front tube after the circulating pump front tube of the bottom Qing Qu, and the connection circulating pump.
2. Fenton fluidized bed according to claim 1, it is characterised in that: the bottom of the fluidized bed cylinder is taper bear building-up
Structure.
3. Fenton fluidized bed according to claim 1, it is characterised in that: include Zero-valent Iron in the fluidised bed zones Fe and Mn
The solid particle of Fe and Mn, partial size are that 3-5mm particle is spherical.
4. Fenton fluidized bed according to claim 1, it is characterised in that: fluidized bed cylinder be 316L steel plate welding production and
At.
5. Fenton fluidized bed according to claim 1, it is characterised in that: support frame is constituted using the channel steel of 316L material,
Support frame body is network, and outer ring is annular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820783141.9U CN208603800U (en) | 2018-05-24 | 2018-05-24 | A kind of Fenton fluidized bed for sewage treatment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820783141.9U CN208603800U (en) | 2018-05-24 | 2018-05-24 | A kind of Fenton fluidized bed for sewage treatment |
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| Publication Number | Publication Date |
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| CN208603800U true CN208603800U (en) | 2019-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820783141.9U Expired - Fee Related CN208603800U (en) | 2018-05-24 | 2018-05-24 | A kind of Fenton fluidized bed for sewage treatment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108439571A (en) * | 2018-05-24 | 2018-08-24 | 苏州苏沃特环境科技有限公司 | A kind of Fenton fluid bed and its method for sewage disposal |
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2018
- 2018-05-24 CN CN201820783141.9U patent/CN208603800U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108439571A (en) * | 2018-05-24 | 2018-08-24 | 苏州苏沃特环境科技有限公司 | A kind of Fenton fluid bed and its method for sewage disposal |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190315 |