CN102491445B - Multifunctional water treatment device by integrating heavy metal removal function and organic pollution removal function - Google Patents
Multifunctional water treatment device by integrating heavy metal removal function and organic pollution removal function Download PDFInfo
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- CN102491445B CN102491445B CN2011104436961A CN201110443696A CN102491445B CN 102491445 B CN102491445 B CN 102491445B CN 2011104436961 A CN2011104436961 A CN 2011104436961A CN 201110443696 A CN201110443696 A CN 201110443696A CN 102491445 B CN102491445 B CN 102491445B
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- water treatment
- tio
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
Abstract
The invention relates to a multifunctional water treatment device, which comprises a clear water storage tank (1), a multifunctional reactor component (2), a flow meter (3) and a circulating pump (4). The multifunctional reactor component (2) is composed of seal components such as a short-wave ultraviolet lamp (5), a quartz casing tube (6), a multifunctional water treatment member (7), a reactor cylindrical body (8) and a reactor cover plate (11). The multifunctional water treatment member (7) is in a cylindrical shape, the material of the main body is an attapulgite material roasted by adding an adhesive, porous channels with odd number layers (10) are provided on the main body part, a layer of anatase TiO2 catalytic membrane (9) prepared by using a sol-gel method is attached on the inner wall of the cylindrical body. The control effect of silica sealing ring (18) can realize the up-and-down motion of water flow in the reactor. The water flow is in a turbulent state, the hydraulic detention time is long. The water treatment device is in favor of thoroughly adsorbing the heavy metal, and enables mass transfer diffusion of an organic matter in water on the catalyst surface during a photocatalysis reaction.
Description
Technical field
The present invention relates to a kind of Multifunction water treatment device, this device both can have been removed heavy metal pollutant in water, can remove organic pollutants again.Device of the present invention can be widely used in the advanced treatment of tap water and the preparation of high purity water, also can promote the use of the processing of the complicated water quality waste water that contains simultaneously heavy metal and poisonous and harmful high-concentration hardly-degradable organic pollutant simultaneously.
Background technology
Along with the fast development of China's economy and society, a large amount of undressed trade effluents and sanitary sewage directly enter water body, cause the urban drinking water source to be subject to multiple pollutant pollution in various degree.The tap water conventional treatment process only has removal effect preferably to suspended substance, colloidal solid in water, and is unsatisfactory to the removal that is difficult to biodegradable solvability toxic organics and heavy metal.And the heavy metal pollutant take mercury, cadmium, lead, chromium etc. as representative in water body, in case enter organism and HUMAN HEALTH generation harm, as minamata disease, itai-itai disease etc., and these harm generally have again the characteristics such as hypertoxicity, persistence, bioaccumulation and biomagnification.This health to people has consisted of very large potential threat.
Titanium dioxide (TiO
2) photocatalysis technology due to have the reaction conditions gentleness, easy and simple to handle, selectivity is little, the outstanding advantages such as nontoxic, especially be difficult to biodegradable poisonous and harmful organic compound for some and have extremely strong Oxidative demage ability, also bacterium, virus had killing effect simultaneously, thereby receive much concern, be that a kind of drinking water deep with applications well prospect is processed new technology.But up to now, photocatalysis technology does not still make substantial progress aspect applying.One of them major reason is easily to occur catalyst activity reduction in the liquid phase light-catalyzed reaction.Chinese scholars has been done a lot of research work for catalyst deactivation mechanisms, result shows, the inactivation of photocatalyst, except by byproduct of reaction or intermediate product the absorption of catalyst surface or accumulation cause, the more important thing is by the mineral ion in water body, especially Fe
2+, Mn
2+, Cu
2+, Ni
2+, Cr
3+, Co
2+Cause etc. heavy metal ion.
For the work-ing life of extending catalyst, many by setting up independently pretreatment technology to solve in research.As Crittenden etc. in the research of sun power degraded BTEX, set up the water quality pretreatment unit that comprises filtration, oxidation, ion-exchange, this pretreatment process has been obtained better effects, but independent pre-treatment facility need to be set, increase cost and working cost, be unfavorable for that the commercialization of technology is promoted.Also have merely and by manganese sand filtration post, tap water is carried out pre-treatment to remove Fe wherein
2+, Mn
2+, the method plays fine provide protection to catalyst activity, but to the poor effect of other removal of heavy metal ions in water.
Removal technique and method for heavy metal ion in water mainly contains chemical precipitation method and ion exchange method at present, the former need to add chemical reagent in water, the easily new pollutent of introducing, and the method needs the precipitate and separate operation, is unsuitable for the advanced treatment of tap water.Ion exchange method is better to removal of heavy metal ions effect in water, but complex process need to arrange independent pre-treatment facility, increases cost and working cost.
Summary of the invention
Technical problem:The objective of the invention is to design a kind of heavy metal pollutant in water of both can having removed, can remove again the multi-functional drinking water advanced treatment apparatus of organic pollutants, bacterium and virus etc.That this device has is simple in structure, construction and running cost is low, speed of reaction is high, the advantage such as easy to operate, stable, can be widely used in the advanced treatment of tap water and the preparation of high purity water.
Technical scheme:In order to achieve the above object, the present invention is achieved in that whole system comprises water tank, multifunctional reactor assembly, recycle pump, under meter.Be characterized in: the multifunctional reactor assembly is processed member, reactor shell and sealing element by shortwave ultraviolet lamp, quartz burner, multifunctional water and is formed.Multifunctional water is processed the cylinder barrel shaped attapulgite material of solid support material for forming by adding the tamanori sintering of member, and the cylindrical tube center inner wall is the nano-TiO by the sol-gel method load
2Catalyzer; Be for odd number the duct that concentric(al) circles is arranged in cylindrical tube.Multifunctional water processing member cylindrical shell center arranges quartz socket tube, and the shortwave cold cathode low-voltage mercury lamp as light source is housed in sleeve pipe.Reactor shell is stainless steel, perhaps tetrafluoroethylene, or polyethylene, or ABS, or the resistance to oxidation class plastics such as PVC-U are made.Sealed by nut bolt+silica gel sealing packing ring between reactor shell and cover plate.Sealed by screw thread+silica gel sealing O type circle between reactor shell and quartz socket tube.Multifunctional water processes the member cylindrical shell and reactor shell is the concentric(al) circles installation, and current are controlled by the multilayer silica gel sealing ring in the flow direction of reactor.The pending water that polluted by heavy metal and toxic organics, the attapulgite solid support material of at first flowing through is with heavy metal in Adsorption water, and TiO subsequently flows through
2During catalytic film, under the effect of short-wave ultraviolet radiation, the oxidized decomposition of the organic pollutant in water.Also have simultaneously bacterium and virus function in the water of removal.
Beneficial effect:
1. can remove simultaneously multiple different sorts pollutent in water.Consisting of multifunctional water processing member body of the present invention is attapulgite, and the attapulgite material has good Adsorption effect to various heavy in water.TiO under the effect of UV-light
2Catalyst surface generation light-catalyzed reaction has good removal effect to the organic contamination in water.In addition, short wave ultraviolet light also has good direct killing effect to bacterium, virus in water.Thereby the present invention is adapted to the processing of the micro-polluted water of multiple different quality.
2. the present invention in the heavy metal removal, can also effectively shield because of Fe in water in realizing water
2+, Mn
2+, Cu
2+, Ni
2+, Cr
3+, Co
2+The TiO that causes etc. heavy metal ion
2The activity of catalyzer descends, thus the work-ing life of extending catalyst.
3. in photoreactor of the present invention, the special multifunctional water of filling is processed TiO on member
2Catalyzer is fixing membranous type, has overcome to use the existing catalyst separating of suspension hydrogen-catalyst reactor, reclaim difficult inherent defect.
4. in photoreactor of the present invention, the special multifunctional water processing construction material main component of filling is the attapulgite of sinter molding, need to add chemical reagent in water when having overcome precipitator method removal heavy metal, easily introduce the shortcoming of new pollutent, and do not need the precipitate and separate operation.
Set pair heavy metal adsorption of the present invention remove technique with to organic photochemical catalysis technique in one, thereby simple in structure, and do not need pretreatment technology.Can directly utilize pipe network end hydraulic pressure, carry out one and cross the formula operation, reduce power charge; Also can take the intermittent operation mode of pump Recycle design.Also can be according to processing the water yield, water quality requirement flexible choice reactor unit assembly employing series winding or the mode that is connected in parallel, unit scale amplifies does not affect basic design parameters.
Description of drawings
Fig. 1 is Multifunction water treatment device process schematic representation of the present invention,
Fig. 2 is device schematic side view of the present invention,
Fig. 3 is device schematic top plan view of the present invention,
Fig. 4 is A-A diagrammatic cross-section in Fig. 3,
Fig. 5 is B-B and C-C diagrammatic cross-section in Fig. 2,
Fig. 6 is that schematic diagram is fixed and sealed to quartz socket tube,
Fig. 7 is that reactor cover plate and thread plate connect schematic diagram.
Label declaration in accompanying drawing is as follows:
1-clear water bin, 2-multifunctional reactor assembly, the 3-under meter, the 4-recycle pump, 5-shortwave ultraviolet lamp, the 6-quartz socket tube, the 7-multifunctional water is processed member, 8-reactor shell, 9-TiO
2Catalyzer, 10-duct, 11-reactor cover plate, 12-nut, 13-bolt, 14-metallic gasket, 15-silica gel sealing packing ring, 16-thread plate, 17-silica gel sealing O type circle, 18-silica gel sealing ring, 19-water-in, 20-water outlet.
Embodiment
See also accompanying drawing 1-7.The present invention includes clear water bin 1, multifunctional reactor assembly 2, under meter 3, recycle pump 4.The core of multifunctional reactor assembly is processed member 7, reactor shell 8 and sealing element by shortwave ultraviolet lamp 5, quartz socket tube 6, multifunctional water and is formed.Multifunctional water is processed the cylinder barrel shaped attapulgite material of solid support material for forming by adding the tamanori sintering of member 7, and the cylindrical tube center inner wall is the nano-TiO by the sol-gel method load
2Catalyzer 9; Be an odd-level duct 10 in cylindrical tube, duct 10 is the concentric(al) circles arrangement.The cylindrical shell center that multifunctional water is processed member 7 arranges quartz socket tube 6, and the transmissivity of 6 pairs of 254nm short wave ultraviolet lights of quartz socket tube is equipped with the shortwave ultraviolet lamp 5 as light source more than 90% in sleeve pipe.Reactor shell 8 is stainless steel, perhaps tetrafluoroethylene, or polyethylene, or ABS, or the resistance to oxidation class plastics such as PVC-U are made.Sealed by nut 12, bolt 13, metallic gasket 14 and silica gel sealing packing ring 15 between reactor shell 8 and reactor cover plate 11.Sealed and fixed by thread plate 16 and silica gel sealing O type circle 17 between reactor cover plate 11 and quartz socket tube 6.Multifunctional water processes member 7 cylindrical shells and reactor shell 8 is the concentric(al) circles installation.Reactor shell 8 is provided with water-in 19, and reactor cover plate 11 is provided with water outlet 20.It is different separately that multifunctional water is processed the silica gel sealing ring 18 position diameters of member 7 cylindrical shell upper and lowers.Top silica gel sealing ring 18 is arranged in respectively from outside to inside between the layers 1 and 2 duct, between the 3rd and the 4th layer of duct ..., and innermost layer is inboard; Bottom silica gel sealing ring 18 is arranged in respectively from the outside, the 1st layer of duct outside to inside, between the layers 2 and 3 duct, between the 4th and the 5th layer of duct ...
The present invention is applicable to multiple TiO
2Fixing film.Sol-gel liquid and the infiltration crystal pulling method prepared except employing butyl (tetra) titanate, ethanol, distilled water and nitric acid carry out plated film, repetitive coatings, roasting process, the TiO that directly makes on the attapulgite material
2Fixedly outside film, also be applicable to TiO
2Fixedly film is fixed in the polyfunctional catalyst of other nonmetallic mineral materials.
The device principle of work:
See also Fig. 1 and Fig. 4.
After pending water entered multifunctional reactor assembly 2, current flowed to by multilayer silica gel sealing ring 18 in reactor and are controlled.Water inlet is processed member 7 cylindrical shells and reactor shell 8 spaces from multifunctional water at first from bottom to top and is flow to the top, then under the guide functions of silica gel sealing ring 18, processes the interior outermost layer of member 7 duct through multifunctional water and flows through from top to bottom.So up and down reciprocatingly flow through, the heavy metal contaminants in water is removed in the adsorption of processing member 7 solid support materials by multifunctional water.When pending water flow to multifunctional water and processes between member 7 cylindrical shells and quartz socket tube 6 space, the irradiation of shortwave ultraviolet lamp 5 issue third contact of a total solar or lunar eclipse catalyzed reaction remove water in organic contamination, and can directly kill bacterium in water, virus.After processing, water flow to clear water bin 1.
This device operation scheme is flexible, controls simple.Can adopt one to cross the operation of formula Continuous Flow, be purified at the dirty multifunctional reactor assembly 2 of crossing of the effect of remaining pressure of piping system from the pending water of city tap-water pipe network.Can carry out flow control and realize control to the residence time by adjusting the valve opening degree.Also can take the intermittent operation mode, a certain amount of pending water is under the effect of recycle pump 4, reciprocation cycle with the Adsorption heavy metal, after heavy metal is removed, then is opened ultraviolet lamp 5 and is carried out photocatalysis to remove organic pollutant between multifunctional reactor assembly 2 and clear water bin 1.
If in water sample, Pollutant levels are higher and treatment scale is large, multifunctional reactor assembly 2 also can be taked some groups of serial or parallel connection modes.In addition, also can according to Pollutant levels and the treatment scale size of water sample, select whether to add O
2Or H
2O
2Or O
3Deng pro-oxidant etc.
Claims (1)
1. Multifunction water treatment device, be connected in series formation by under meter (3), multifunctional reactor assembly (2), clear water bin (1), recycle pump (4) order, it is characterized in that described multifunctional reactor assembly (2) is comprised of shortwave ultraviolet lamp (5), quartz socket tube (6), multifunctional water processing member (7), reactor shell (8) and reactor cover plate (11); Being provided with shortwave ultraviolet lamp (5) at the center of reactor shell (8), is quartz socket tube (6) outside shortwave ultraviolet lamp (5), is TiO between reactor shell (8) and quartz socket tube (6)
2Catalyzer (9) is at TiO
2Be provided with duct (10) between the top and bottom of catalyzer (9), at TiO
2The top and bottom of catalyzer (9) are respectively equipped with silica gel sealing ring (18) duct of inner ring and the duct of outer ring are separated, and water-in (19) is located at the bottom of reactor shell (8), and water outlet (20) is located at the top of reactor shell (8);
It is cylindrical tube shape that multifunctional water is processed member (7), and its main part is provided with the odd-level duct, and cylinder inboard wall is attached with one deck Detitanium-ore-type TiO
2Catalytic film;
The cylindrical shell master material that multifunctional water is processed member (7) is to add the attapulgite material that the tamanori sintering forms;
The nano-anatase TiO that the cylinder inboard wall of multifunctional water processing member (7) adheres to
2Catalytic film is for adopting sol-gel method to be prepared from;
Fixing between reactor cover plate (11) and quartz socket tube (6) fixed and sealed by the internal thread of thread plate (16), outside screw and silica gel sealing O type circle (17) on reactor cover plate (11), and the dismounting aspect is simple to operate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104436961A CN102491445B (en) | 2011-12-27 | 2011-12-27 | Multifunctional water treatment device by integrating heavy metal removal function and organic pollution removal function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104436961A CN102491445B (en) | 2011-12-27 | 2011-12-27 | Multifunctional water treatment device by integrating heavy metal removal function and organic pollution removal function |
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| Publication Number | Publication Date |
|---|---|
| CN102491445A CN102491445A (en) | 2012-06-13 |
| CN102491445B true CN102491445B (en) | 2013-05-15 |
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| CN104944511B (en) * | 2015-05-27 | 2017-12-08 | 北京大学 | The method and apparatus that a kind of photoelectrocatalysis removes heavy metal ions in wastewater |
| CN114231406B (en) * | 2021-12-16 | 2023-02-28 | 江苏通用环境工程有限公司 | Fungus-algae coupling integrated equipment and oil production and decontamination method |
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Non-Patent Citations (2)
| Title |
|---|
| 固定膜光催化氧化反应器深度净化自来水研究;李田等;《中国给水排水》;19961231;第12卷(第3期);7 * |
| 李田等.固定膜光催化氧化反应器深度净化自来水研究.《中国给水排水》.1996,第12卷(第3期),7. |
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