CN103395908B - Series type internal circulation Fenton fluidized-bed oxidizing tower - Google Patents
Series type internal circulation Fenton fluidized-bed oxidizing tower Download PDFInfo
- Publication number
- CN103395908B CN103395908B CN201310286520.9A CN201310286520A CN103395908B CN 103395908 B CN103395908 B CN 103395908B CN 201310286520 A CN201310286520 A CN 201310286520A CN 103395908 B CN103395908 B CN 103395908B
- Authority
- CN
- China
- Prior art keywords
- oxidizing tower
- internal recycle
- fenton fluidized
- bed
- tubular body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention discloses a series type internal circulation Fenton fluidized-bed oxidizing tower. The oxidizing tower comprises two series type internal circulation Fenton fluidized-bed pipe column main bodies. Each series type internal circulation Fenton fluidized-bed pipe column main body is internally provided with a circulating water-distribution area, a Fe<2+> fluidized reaction area, a reaction filtering area and a reaction termination area from bottom to top. The oxidizing tower disclosed by the invention has the advantages that two Fenton fluidized-bed oxidizing towers are innovatively connected in series and are combined with internal circulation process, the addition of Fe<2+> is reduced, and residual H2O2 is fully utilized, so that the cost of iron-containing sludge in the following treatment is reduced and the removing efficiency of COD is increased.
Description
Technical field
The present invention relates to a kind of fluidized-bed oxidizing tower, particularly a kind of tandem internal recycle Fenton fluidized-bed oxidizing tower.
Background technology
For preventing the secondary pollution of urban water-body, complete the transformation of municipal effluent to a new urban water resource, just must study stable, efficient, energy-conservation sewerage advanced treatment process, again tertiary treatment is carried out to secondary effluent, further removal refractory organic, this has also become an inexorable trend of municipal sewage treatment development.Its deep treatment method mainly contains flocculent precipitation, Ozonation and active carbon adsorption etc. at present.Fenton method is considered to a kind of high-level oxidation technology of effective removal hardly degraded organic substance, and its cardinal principle utilizes Fe
2+as H
2o
2catalyzer, produce the OH that oxidation capacity is very strong in reaction process, and OH can rapid oxidation major part organism.Fenton reagent is Fe
2+and H
2o
2combination, the two reaction generates has the hydroxy radical qiao of high reaction activity, and OH can make it degrade so that mineralising with most of organism effect.As can be seen here, the essence of Fenton reagent degradation of organic substances is that OH propagates radical chain reaction by approach such as transfer transports, and part attack organism RH captures hydrogen, and generate radical R, R is degraded to small organic molecule further or is mineralized into CO
2and H
2the inorganicss such as O, part is reacted with organism and C-C key or C-H key is fissioned, and is finally degraded to harmless object.In addition, the Fe (OH) of generation
3colloid has flocculation, adsorption function.Compared with other traditional water treatment method, Fenton oxidation technology has the following advantages: (1) produces a large amount of very active hydroxyl radical free radical, and it, as the intermediate active species of reaction, has very high oxidation activity; (2) hydroxyl radical free radical is without the pollutant reaction selectively directly and in waste water, is degraded to small-molecule substance that is nontoxic, readily biodegradable, is even CO by its mineralising
2, water and inorganic salts, can not secondary pollution be produced; (3) H is used
2o
2or molecular oxygen is as oxygenant, its reaction has original position green character; (4) both can be used as the application of individual curing technology, also can combine with other treating processes, reduce processing cost.So Fenton technology obtains study and utilization widely in practice.
Along with the development of environmental science and technology, Fenton method derives many branches in the last thirty years, as UV/Fenton method, UV/H
2o
2method, iron filings/H
2o
2method and Electro-Fenton process etc.Fenton oxidation technology is current domestic and international application a kind of high-level oxidation technology comparatively widely.Conventional homogeneous Fenton technology is a kind of Fenton technology comparatively ripe comparatively speaking, but this technology to have pH range of application narrow, Fe
2+consumption is large, becomes iron containing sludge precipitation after the reaction, shortcomings such as processing cost is high and limit the application of its large-scale industrialization.Tandem internal recycle Fenton fluidized-bed oxidizing tower can reduce Fe in a large number
2+add, make full use of residual H
2o
2, thus reduce the cost of subsequent disposal iron containing sludge and improve the removal efficiency of COD.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of tandem internal recycle Fenton fluidized-bed oxidizing tower, comprises 2 tandem internal recycle Fenton fluidized bed column main bodys 1,2.Circulation water distributing area 3, Fe is provided with from bottom to top in tandem internal recycle Fenton fluidized bed column main body
2+fluidized reaction zone 4, reaction zone of transition 5, reaction terminating district 21.
Tandem internal recycle Fenton fluidized bed column main part size: 100mm × 1000mm, upper end connects the tapered tube of d=100 ~ 150mm, and tapered tube height is 50mm; The synthetic glass post of tapered tube upper end connection diameter d=150mm, height is respectively 600mm, 400mm, and main part effective volume is V=15L.
Tandem internal recycle Fenton fluidized-bed oxidizing tower quartz sand carrier layer height: 0.3m, the granulated glass sphere of the d=6 ~ 7mm of bottom is as bottom cushion, bottom cushion height is 5cm, with the granulated glass sphere of d=3 ~ 4mm as top bed course, top bed course height is 3 ~ 4cm, the effect of two-layer bed course prevents carrier from leaking into reactor bottom, and dispersible the fluid entering reactor, fluid is by being cut into countless shallow bid current during bed course, can better impel carrier fluidization, laying quartz sand above bed course is fluidized-bed carrier.
Be provided with a water inlet pipe 6 bottom tandem internal recycle Fenton fluidized-bed oxidizing tower 1, waste water carries out acid-alkali accommodation and Fe by regulating tank 9
2+add, also comprise a hydrogen peroxide grug feeding jar 8, it is connected with tandem internal recycle Fenton fluidized-bed oxidizing tower by chemical feed pipe 7.
Described internal recycle Fenton fluidized-bed oxidizing tower tubing string (1) top is provided with rising pipe 10, is connected with internal recycle Fenton fluidized-bed oxidizing tower tubing string (2) recycling effluent mouth 11; Described internal recycle Fenton fluidized-bed oxidizing tower (2) top is provided with a water inlet pipe 13 and a rising pipe 12.
In addition, described internal recycle Fenton fluidized bed column main body (1,2) is equipped with internal circulation apparatus, is wherein provided with water inlet pipe 14 and rising pipe 15; Fluidized height 1m when return flow is 500L/h.
All return lines all arrange under meter 16.
The invention has the beneficial effects as follows: utilize tandem internal recycle Fenton fluidized-bed oxidizing tower of the present invention, H when overcoming on the one hand traditional F enton method advanced treatment of waste water
2o
2residue problem, further increases removal efficiency, can realize on the other hand the minimizing of mud, sludge quantity great problems when overcoming traditional F enton method process organic waste water.This technology can advanced treatment organic wastewater with difficult degradation thereby, and makes water outlet reach national relevant emission standards; In addition internal recycle Fenton fluidized-bed oxidizing tower provided by the invention, is characterized in that decreasing Fe
2+add, make full use of residual H
2o
2, thus reduce the cost of subsequent disposal iron containing sludge and improve the removal efficiency of COD.
Accompanying drawing explanation
Fig. 1 is this practical invention schematic diagram.
1: tubular body 1
2: tubular body 2
3: circulation water distributing area
4:Fe
2+fluidized reaction zone
5: reaction zone of transition
6:1 post water inlet pipe
7: chemical feed pipe
8: hydrogen peroxide grug feeding jar
9: regulating tank
10:1 post rising pipe
11:2 post recycling effluent mouth
12:2 post rising pipe
13:2 post water inlet pipe
14: water inlet pipe
15: rising pipe
16: under meter
17: recycle pump
18: volume pump 18
19: volume pump 19
20: the recycle system
21: reaction terminating district
22: quartz sand carrier
Fig. 2 is H
2o
2dosage is on the impact of COD clearance
Embodiment:
Below by embodiment, this practicality invention is described further:
Implementation step: as shown in Figure 1, a kind of tandem internal recycle Fenton fluidized-bed oxidizing tower, comprises 1 tandem internal recycle Fenton fluidized-bed pipe No. 1 post 1 and 1 tandem internal recycle Fenton fluidized-bed pipe No. 2 posts 2.Circulation water distributing area 3, Fe is provided with from bottom to top in tandem internal recycle Fenton fluidized bed column main body
2+fluidized reaction zone 4, reaction zone of transition 5, reaction terminating district 21.
Tandem internal recycle Fenton fluidized-bed oxidizing tower (No. 1 post) bottom is provided with a water inlet pipe 6, and waste water carries out acid-alkali accommodation and Fe by regulating tank 9
2+add, also comprise a hydrogen peroxide grug feeding jar 8, it is connected with tandem internal recycle Fenton fluidized-bed oxidizing tower by chemical feed pipe 7.
Tandem internal recycle Fenton fluidized-bed oxidizing tower (No. 1 post) top is provided with rising pipe 10, is connected with No. 2 post recycling effluent mouths 11.
Tandem internal recycle Fenton fluidized-bed oxidizing tower (No. 2 posts) top is provided with a water inlet pipe 13 and a rising pipe 12.
No. 1 post and No. 2 posts are equipped with internal circulation apparatus, are wherein provided with water inlet pipe 14, rising pipe 15, under meter 16 and recycle pump 17.
Illustrate using method of the present invention below:
As shown in fig. 1, tandem internal recycle Fenton fluidized-bed oxidizing tower, has 1 tandem internal recycle Fenton fluidized-bed pipe No. 1 post 1 and 1 tandem internal recycle Fenton fluidized-bed pipe No. 2 posts 2.Circulation water distributing area 3 is provided with from bottom to top, with Fe after waste water tune pH in tandem internal recycle Fenton fluidized bed column main body
2+in equalizing tank 9 after mixing, enter tandem internal recycle Fenton fluidized-bed pipe No. 1 post 1 by volume pump 18, simultaneously H
2o
2reactor is entered through volume pump 19; Waste water and H
2o
2pour system at a high speed via the recycle system, be evenly distributed to Fe
2+fluidized reaction zone 4, with hydrogen peroxide and quartz sand carrier 22 and ferrously react the hydroxyl radical free radical generating and have high oxidative, carries out synergistic oxidation effect with organic waste water; Waste water flows into tandem internal recycle Fenton fluidized-bed pipe No. 2 posts 2 via reaction zone of transition 5 further, squeezes into Fe at a high speed by the recycle system 20
2+fluidized reaction zone 4, with residue hydrogen peroxide and quartz sand carrier 22 and ferrous react the hydroxyl radical free radical generating and have high oxidative, carries out synergistic oxidation effect with organic waste water; The waste water 21 reacting zone of transition 5 and reaction terminating district in whole system is continued to enter Fe by the recycle system 20
2+fluidized reaction zone 4 is reacted.
Lower mask body connected applications example is described further application and result of the present invention:
Adopt tandem internal recycle Fenton fluidized-bed oxidizing tower to carry out advanced treatment to garbage leachate wastewater, the pH value before water inlet is 6.0, COD is 305mg/L, and experimental result as shown in Figure 2.Concrete processing mode is as follows: according to character and the pertinent literature report of this experiment water sample, Fenton oxidation treatment condition are set to Fe2+ dosage 150mg/L(Fe2+/COD=1:2, FeSO47H2O:744mg/L), initial pH value is 3.0, and the residence time is 30min(wastewater flow: 50L/h).The initial pH value of H2SO4 and NaOH regulation system is adopted according to particular case, after adding Fe2+ to equalizing tank, open intake pump and hydrogen peroxide pump, open recycle pump simultaneously, fluidization highly reaches 1m needs circular flow 500L/h, waste water and H2O2 are evenly distributed to Fe2+ fluidized reaction zone 4, with hydrogen peroxide and quartz sand carrier 22 and ferrously react the hydroxyl radical free radical generating and there is high oxidative, enter tandem internal recycle Fenton fluidized-bed pipe No. 2 posts 2 after carrying out synergistic oxidation reaction with organic waste water, utilize remaining H2O2 to carry out oxidizing reaction.When this test H2O2 dosage is 222mg/L, the COD of processed waste water is 91mg/L, and now COD clearance is 70.3%.
Claims (5)
1. a tandem internal recycle Fenton fluidized-bed oxidizing tower, comprise tandem internal recycle Fenton fluidized-bed oxidizing tower tubular body 1 (1), tandem internal recycle Fenton fluidized-bed oxidizing tower tubular body 2 (2), it is characterized in that being disposed with circulation water distributing area (3), Fe from bottom to top in described tandem internal recycle Fenton fluidized-bed oxidizing tower tubular body 1 and tandem internal recycle Fenton fluidized-bed oxidizing tower tubular body 2
2+fluidized reaction zone (4), reaction zone of transition (5), reaction terminating district (21); Described tandem internal recycle Fenton fluidized-bed oxidizing tower tubular body 1 (1) bottom is provided with a water inlet pipe (6), also comprise a hydrogen peroxide grug feeding jar (8), it is connected with tandem internal recycle Fenton fluidized-bed oxidizing tower tubular body 1 by chemical feed pipe (7), and waste water carries out acid-alkali accommodation and Fe by regulating tank (9)
2+add, described regulating tank is connected to tandem internal recycle Fenton fluidized-bed oxidizing tower tubular body 1; The size of described tandem internal recycle Fenton fluidized-bed oxidizing tower tubular body 1, tandem internal recycle Fenton fluidized-bed oxidizing tower tubular body 2: 100mm × 1000mm, upper end connects the tapered tube of d=100 ~ 150mm, and tapered tube height is 50mm; The synthetic glass post of tapered tube upper end connection diameter d=150mm, height is respectively 600mm, 400mm, and the effective volume of tandem internal recycle Fenton fluidized-bed oxidizing tower tubular body 1 and tandem internal recycle Fenton fluidized-bed oxidizing tower tubular body 2 is V=15L; The quartz sand carrier layer height of tandem internal recycle Fenton fluidized-bed oxidizing tower tubular body 1, tandem internal recycle Fenton fluidized-bed oxidizing tower tubular body 2: 0.3m, the granulated glass sphere of the d=6 ~ 7mm of bottom is as bottom cushion, bottom cushion height is 5cm, with the granulated glass sphere of d=3 ~ 4mm as top bed course, top bed course height is 3 ~ 4cm.
2. a kind of tandem internal recycle Fenton fluidized-bed oxidizing tower according to claim 1, it is characterized in that described tandem internal recycle Fenton fluidized-bed oxidizing tower tubular body 1 (1) top is provided with rising pipe (10), be connected with tandem internal recycle Fenton fluidized-bed oxidizing tower tubular body 2 (2) recycling effluent mouth (11).
3. a kind of tandem internal recycle Fenton fluidized-bed oxidizing tower according to claim 1, is characterized in that described tandem internal recycle Fenton fluidized-bed oxidizing tower tubular body 2 (2) top is provided with a water inlet pipe (13) and a rising pipe (12).
4. a kind of tandem internal recycle Fenton fluidized-bed oxidizing tower according to claim 1, it is characterized in that described tandem internal recycle Fenton fluidized-bed oxidizing tower tubular body 1 (1), tandem internal recycle Fenton fluidized-bed oxidizing tower tubular body 2 (2) is equipped with internal circulation apparatus, be wherein provided with water inlet pipe (14) and rising pipe (15).
5., according to the arbitrary described tandem internal recycle Fenton fluidized-bed oxidizing tower of claim 1-4, it is characterized in that decreasing Fe
2+add, make full use of residual H
2o
2, thus reduce the cost of subsequent disposal iron containing sludge and improve the removal efficiency of COD.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310286520.9A CN103395908B (en) | 2013-07-09 | 2013-07-09 | Series type internal circulation Fenton fluidized-bed oxidizing tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310286520.9A CN103395908B (en) | 2013-07-09 | 2013-07-09 | Series type internal circulation Fenton fluidized-bed oxidizing tower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103395908A CN103395908A (en) | 2013-11-20 |
| CN103395908B true CN103395908B (en) | 2015-06-03 |
Family
ID=49559704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310286520.9A Active CN103395908B (en) | 2013-07-09 | 2013-07-09 | Series type internal circulation Fenton fluidized-bed oxidizing tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103395908B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103755106B (en) * | 2014-02-13 | 2015-12-30 | 广州益方田园环保股份有限公司 | A kind of fluidized-bed oxidizing tower and treatment process thereof |
| CN104192979B (en) * | 2014-09-23 | 2016-04-27 | 南京大学 | A kind of method of Fenton fluidized bed deep treatment biochemical tail water |
| CN104671500B (en) * | 2015-02-11 | 2016-08-17 | 福建工程学院 | Circulation speed change fluid bed Fenton catalytic oxidizing equipment |
| CN104909504B (en) * | 2015-06-16 | 2017-08-01 | 北京纬纶华业环保科技股份有限公司 | A kind of high salt high-COD waste water processing system and method |
| CN106167298A (en) * | 2016-08-22 | 2016-11-30 | 江苏金点环保科技有限公司 | The new device that a kind of Fenton oxidation processes |
| CN106746052A (en) * | 2017-01-14 | 2017-05-31 | 甘肃新天亿环保工程有限公司 | A kind of reverse-flow type iron-carbon micro-electrolysis couple Fenton treatment reaction devices |
| CN107055896A (en) * | 2017-06-20 | 2017-08-18 | 南京交通职业技术学院 | A kind of ortho-aminobenzoic acid wastewater treatment equipment and method |
| CN109455796B (en) * | 2018-12-29 | 2021-12-14 | 青岛科技大学 | Industrial wastewater treatment process of zero-valent iron internal electrolysis coupling internal circulating fluidized bed Fenton |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101486518A (en) * | 2009-02-27 | 2009-07-22 | 哈尔滨工业大学 | Fenton-like-fluidized bed sewage processor and sewerage treating method therefor |
| JP2011212618A (en) * | 2010-03-31 | 2011-10-27 | New Japan Chem Co Ltd | Method for treating wastewater |
| CN102642911A (en) * | 2012-05-02 | 2012-08-22 | 山东绿泉环保工程有限公司 | Advanced oxidation treatment device and advanced oxidation treatment process of refractory organic wastewater |
| CN202898099U (en) * | 2012-11-06 | 2013-04-24 | 四川立新瑞德水处理有限责任公司 | Fenton fluidized bed |
-
2013
- 2013-07-09 CN CN201310286520.9A patent/CN103395908B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101486518A (en) * | 2009-02-27 | 2009-07-22 | 哈尔滨工业大学 | Fenton-like-fluidized bed sewage processor and sewerage treating method therefor |
| JP2011212618A (en) * | 2010-03-31 | 2011-10-27 | New Japan Chem Co Ltd | Method for treating wastewater |
| CN102642911A (en) * | 2012-05-02 | 2012-08-22 | 山东绿泉环保工程有限公司 | Advanced oxidation treatment device and advanced oxidation treatment process of refractory organic wastewater |
| CN202898099U (en) * | 2012-11-06 | 2013-04-24 | 四川立新瑞德水处理有限责任公司 | Fenton fluidized bed |
Non-Patent Citations (1)
| Title |
|---|
| 以甲基橙废水验证Fenton流化床反应器的研究;黎玉香 等;《水处理技术》;20120331;第38卷(第3期);第91页第1节、第92-93页第2节及附图1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103395908A (en) | 2013-11-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103395908B (en) | Series type internal circulation Fenton fluidized-bed oxidizing tower | |
| CN101591082B (en) | Method and device for multicomponent oxide pretreatment of organic electroplating waste water | |
| CN204874213U (en) | Petrochemical industry waste water is with synthesizing water treatment facilities | |
| CN103755096B (en) | Coupled Fenton oxidation and anaerobic digestion reactor for treating surplus sludge | |
| CN104671597B (en) | The process technique of antibiotic waste water | |
| CN103910470B (en) | A kind of system and method processing chemical industrial park comprehensive wastewater | |
| CN105540992A (en) | Landfill leachate treatment technology | |
| CN102531244B (en) | Pretreatment method of landfill leachate of waste incineration power plant | |
| CN204897660U (en) | A dark treatment facility of environment -friendly that is used for high salt industry sewage that contains | |
| CN204874212U (en) | A recovery plant for high enriched phenol wastewater | |
| CN107777830A (en) | A kind of high-concentration hardly-degradable pharmacy wastewater treatment method and system | |
| CN103708647A (en) | Deep treatment method for industrial wastewater through natural pyrite catalyzed H2O2 oxidation | |
| CN105819567A (en) | Self-circulation anaerobic reactor | |
| CN204022629U (en) | The treatment system of tetrahydrofuran (THF) waste water and pyridines waste water | |
| CN102963956A (en) | Method for processing high-concentration non-degradable organic wastewater in combination with titanium dioxide and ultraviolet radiation | |
| CN103342440B (en) | Efficient biological treatment method of coal gasification wastewater | |
| CN106145571A (en) | A kind of chemical wastewater treatment station Tailwater Depth processing system and processing method | |
| CN203474595U (en) | Device for recycling domestic sewage in colleges and universities | |
| CN102951724A (en) | Three-phase reactor used for Fenton reaction | |
| CN207062059U (en) | A kind of sewage Special oxidation treatment device of high chemical oxygen consumption (COC) | |
| CN104150729B (en) | The sludge treating system of a kind of high efficient resourcing and low pollution emission and method | |
| JP2008043841A (en) | Apparatus for treatment of sludge | |
| CN104817205A (en) | Continuous sand filtration-ozone catalytic oxidation combined wastewater treatment equipment and application method thereof | |
| CN205295072U (en) | Landfill leachate processing apparatus based on anaerobic ammonium oxidation | |
| CN201458880U (en) | Multiple oxidation pretreatment system for organic electroplating waste water |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |