CN102531095A - Method for removing heavy metal in waste liquid - Google Patents
Method for removing heavy metal in waste liquid Download PDFInfo
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- CN102531095A CN102531095A CN2011101851500A CN201110185150A CN102531095A CN 102531095 A CN102531095 A CN 102531095A CN 2011101851500 A CN2011101851500 A CN 2011101851500A CN 201110185150 A CN201110185150 A CN 201110185150A CN 102531095 A CN102531095 A CN 102531095A
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- ion
- waste liquid
- heavy metal
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- photocatalyst material
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- 239000002699 waste material Substances 0.000 title claims abstract description 78
- 239000007788 liquid Substances 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 46
- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 40
- 239000011941 photocatalyst Substances 0.000 claims abstract description 29
- 239000000463 material Substances 0.000 claims abstract description 23
- 150000002500 ions Chemical class 0.000 claims description 26
- -1 silver ions Chemical class 0.000 claims description 24
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 claims description 11
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 10
- 229910001453 nickel ion Inorganic materials 0.000 claims description 8
- 229910052709 silver Inorganic materials 0.000 claims description 6
- 239000004332 silver Substances 0.000 claims description 6
- WUPHOULIZUERAE-UHFFFAOYSA-N 3-(oxolan-2-yl)propanoic acid Chemical compound OC(=O)CCC1CCCO1 WUPHOULIZUERAE-UHFFFAOYSA-N 0.000 claims description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 5
- 239000005083 Zinc sulfide Substances 0.000 claims description 5
- 229910052980 cadmium sulfide Inorganic materials 0.000 claims description 5
- 239000010955 niobium Substances 0.000 claims description 5
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 4
- WLZRMCYVCSSEQC-UHFFFAOYSA-N cadmium(2+) Chemical compound [Cd+2] WLZRMCYVCSSEQC-UHFFFAOYSA-N 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims description 4
- 239000004575 stone Substances 0.000 claims description 4
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 3
- 229910001430 chromium ion Inorganic materials 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 239000010931 gold Substances 0.000 claims description 3
- BQPIGGFYSBELGY-UHFFFAOYSA-N mercury(2+) Chemical compound [Hg+2] BQPIGGFYSBELGY-UHFFFAOYSA-N 0.000 claims description 3
- 229910052758 niobium Inorganic materials 0.000 claims description 3
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 3
- QGLKJKCYBOYXKC-UHFFFAOYSA-N nonaoxidotritungsten Chemical compound O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1 QGLKJKCYBOYXKC-UHFFFAOYSA-N 0.000 claims description 3
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 3
- MUJIDPITZJWBSW-UHFFFAOYSA-N palladium(2+) Chemical compound [Pd+2] MUJIDPITZJWBSW-UHFFFAOYSA-N 0.000 claims description 3
- VEALVRVVWBQVSL-UHFFFAOYSA-N strontium titanate Chemical compound [Sr+2].[O-][Ti]([O-])=O VEALVRVVWBQVSL-UHFFFAOYSA-N 0.000 claims description 3
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 claims description 3
- 229910001930 tungsten oxide Inorganic materials 0.000 claims description 3
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 claims description 3
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 2
- 239000011787 zinc oxide Substances 0.000 claims 1
- 229910021645 metal ion Inorganic materials 0.000 abstract description 6
- 238000007540 photo-reduction reaction Methods 0.000 abstract description 5
- 238000006243 chemical reaction Methods 0.000 description 16
- 229910052751 metal Inorganic materials 0.000 description 10
- 239000002184 metal Substances 0.000 description 10
- 238000001228 spectrum Methods 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 238000006722 reduction reaction Methods 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 4
- 229910052753 mercury Inorganic materials 0.000 description 4
- 229910052750 molybdenum Inorganic materials 0.000 description 3
- 239000011733 molybdenum Substances 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- 238000004065 wastewater treatment Methods 0.000 description 3
- 229910006404 SnO 2 Inorganic materials 0.000 description 2
- NCMHKCKGHRPLCM-UHFFFAOYSA-N caesium(1+) Chemical compound [Cs+] NCMHKCKGHRPLCM-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910001456 vanadium ion Inorganic materials 0.000 description 2
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- NPYPAHLBTDXSSS-UHFFFAOYSA-N Potassium ion Chemical compound [K+] NPYPAHLBTDXSSS-UHFFFAOYSA-N 0.000 description 1
- 229910052773 Promethium Inorganic materials 0.000 description 1
- LCKIEQZJEYYRIY-UHFFFAOYSA-N Titanium ion Chemical compound [Ti+4] LCKIEQZJEYYRIY-UHFFFAOYSA-N 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000031018 biological processes and functions Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910001431 copper ion Inorganic materials 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical class O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004021 humic acid Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 229910001414 potassium ion Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 238000004876 x-ray fluorescence Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Images
Abstract
The invention provides a method for removing heavy metal in waste liquid, which utilizes a photo-reduction mode of a photocatalyst material to reduce metal ions in the waste liquid into heavy metal, and then the heavy metal is precipitated or filtered to be removed, so that the waste liquid reaches the discharge standard.
Description
Technical field
The present invention is about a kind of method of removing heavy metal in the waste liquid, particularly about a kind of method of utilizing photocatalyst material to remove heavy metal in the waste liquid.
Background technology
Heavy metal has grievous injury to human body, but therefore the standard of strictness is arranged for the heavy metal content of waste discharge.Heavy metal comprises: cadmium, chromium, copper, lead, mercury, nickel, zinc etc.
Often metal ingredient is complicated in the waste water, in order to reduce the heavy metal content in the waste water, the method for many removal heavy metals is arranged.For example: chemical method, ion exchange method, electrolytic process, active carbon adsorption, humic acid resin adsorption method, Activated Zeolite Adsorption, medical stone absorption method, reverse osmosis method, electroosmose process, method of enrichment and biological process etc.Wherein, chemical method is that metals ion is oxidized to MOX, to remove the heavy metal in the solution.
Above-mentioned wastewater treatment program is numerous and diverse, long reaction time, required equipment price high.General factory often can't need the outer processing with heavy metal-containing waste water committee by oneself, usually causes an appreciable expense.
Therefore, how effectively to remove the various heavy composition in the waste liquid, can reduce treatment cost of waste liquor again simultaneously.It is the problem that institute of the present invention desire solves.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method of removing heavy metal in the waste liquid, utilizes the photocatalyst reduction method, removes the heavy metal in the waste liquid.At first, with waste liquid with photocatalyst material is mixed.Then, can carry out pH value (pH) set-up procedure.Afterwards, with waste liquid with photocatalyst material is carried out irradiation, make contents of many kinds of heavy metal ion be reduced into heavy metal, again with heavy metal precipitation or filter to remove, can let waste liquid reach emission standard.
Another object of the present invention is to provide a kind of method of removing heavy metal in the waste liquid, can be used in the waste liquid that contains multiple metal ingredient.
Another purpose of the present invention is to provide a kind of method of removing heavy metal in the waste liquid, can be through adjustment pH value, to remove the metal cation component in the waste liquid.
For achieving the above object, the invention provides a kind of method of removing heavy metal in the waste liquid, it comprises:
Provide one to contain the heavy metal ion waste liquid;
One photocatalyst material is provided;
Mix said waste liquid and said photocatalyst material (formation mixing solutions); And
Said waste liquid of one light source irradiation and said photocatalyst material (mixing solutions of the two) are provided, make the most heavy metal species ions in the waste liquid be reduced into most heavy metal species, to reduce concentration of heavy metal ion in the waste liquid.
According to concrete technical scheme of the present invention, preferably, this method also comprises a pH value set-up procedure, and before light source irradiation, when comprising silver ions in the waste liquid, adjusting said waste liquor PH value is 9 to 10.
According to concrete technical scheme of the present invention, preferably, this method also comprises a pH value set-up procedure, and before light source irradiation, when comprising palladium ion, nickel ion in the waste liquid, adjusting said waste liquor PH value is 6 to 7.
According to concrete technical scheme of the present invention, preferably, this method also comprises a pH value set-up procedure, and before light source irradiation, when comprising cupric ion, zine ion in the waste liquid, adjusting said waste liquor PH value is 6 to 10.
According to concrete technical scheme of the present invention, preferably, said heavy metal ion is one or more in gold ion, silver ions, cupric ion, zine ion, cadmium ion, chromium ion, mercury ion and the nickel ion etc.
According to concrete technical scheme of the present invention, preferably, said photocatalyst material is selected from one of following person: titanium oxide (TiO
2), Tungsten oxide 99.999 (WO
3), red stone (Fe
2O
3), zinc oxide (ZnO), strontium titanate (SrTiO
3), Niobium Pentxoxide (Nb
2O
5), White tin oxide (SnO
2), ZIRCONIUM DIOXIDE 99.5 (ZrO
2), Cadmium Sulfide (CdS), zinc sulphide (ZnS) etc.
According to concrete technical scheme of the present invention, preferably, the concentration of said photocatalyst material in waste liquid is 5wt% to 10wt%.
According to concrete technical scheme of the present invention, preferably, said light source is the pulsed light source.
According to concrete technical scheme of the present invention, preferably, said optical source wavelength is 350 to 700nm, and the light source irradiation time is 5 to 60 minutes.
Description of drawings
Fig. 1 is X-light fluorometric analysis ionic strength and the irradiation timing relationship table of sample (I) Au-253.7-pH 7;
Fig. 2 is X-light fluorometric analysis ionic strength and the irradiation timing relationship table of sample (II) Au-253.7-pH 9-10;
Fig. 3 is X-light fluorometric analysis ionic strength and the irradiation timing relationship table of sample (III) Au-Hg-no;
Fig. 4 is X-light fluorometric analysis ionic strength and the irradiation timing relationship table of sample (IV) Ti-Hg-no;
Fig. 5 is the reaction process synoptic diagram of sample (I) Au-253.7-pH 7, (II) Au-253.7-pH9-10, (III) Au-Hg-no;
Fig. 6 is the reaction process synoptic diagram of sample (IV) Ti-Hg-no.
Embodiment
In order more to know the characteristic of describing the method for heavy metal in the removal waste liquid proposed by the invention, below conjunction with figs. is specified it.
The method of heavy metal in the removal waste liquid proposed by the invention can be applicable to Industrial Wastewater Treatment, Laboratory Waste Water Treatment, city wastewater treatment or the like, is not limited thereto.In the present invention, handle as an embodiment with a plant effluent, conjunction with figs. gives a detailed account.
The embodiment of the invention discloses a kind of method of removing heavy metal in the waste liquid.At first, mixing contains heavy metal ion waste liquid and photocatalyst material.Then, a light source is provided, the irradiates light catalyst material to carry out photoreduction, makes the heavy metal ion in the waste liquid be reduced into its metallic state, reduces concentration of heavy metal ion in the waste liquid with this.
Contained species of metal ion of the waste liquid of different sources and content are neither together.Above-mentioned heavy metal ion can be selected from gold ion, silver ions, cupric ion, zine ion, cadmium ion, chromium ion, mercury ion, molybdenum ion, nickel ion etc.
Photocatalyst material is the lighting source with full optical band or specific band, as the energy derive of chemical reaction, is catalytic materials with the photocatalyst material, makes chemical reactions such as reactant generation redox.Above-mentioned photocatalyst material can be selected from titanium oxide (TiO
2), Tungsten oxide 99.999 (WO
3), red stone (Fe
2O
3), zinc oxide (ZnO), strontium titanate (SrTiO
3), Niobium Pentxoxide (Nb
2O
5), White tin oxide (SnO
2), ZIRCONIUM DIOXIDE 99.5 (ZrO
2), Cadmium Sulfide (CdS), zinc sulphide (ZnS) etc.The concentration of photocatalyst material in waste liquid generally is about 1wt% to 10wt%.Better person, photocatalyst material concentration is 5wt% to 10wt%.High more its reduction effect of photocatalyst concentration is good more, and photocatalyst concentration is not limited to above-mentioned concentration.
The present invention can be in response to the metal ions in waste liquor composition, adjustment light source wavelength band and time.Above-mentioned light source should the person can be pulsed light source, led light source, ultraviolet source, optical fiber source etc.Wherein, optical source wavelength should the person be 250 to 700nm, and better person is 350 to 700nm, and light source irradiation time preferably is 5 to 60min.
Example:
(X-ray Fluorescence Spectrometer XRF), analyzes (back) before the irradiation metal relative weight per-cent in the waste liquid to utilize X-light fluorescence analyser.And in the irradiation process, analyze the metal content of photocatalyst powder surface.
Utilizing titanium oxide (P25) is photocatalyst material, carries out photoreduction.Sample number into spectrum (I) Au-253.7-pH 7 is meant the waste liquid (1) of pH value 7, utilizes the 253.7nm ultraviolet source irradiation.Sample number into spectrum (II) Au-253.7-pH9-10 is meant the waste liquid (1) of pH value for 9-10, utilizes the 253.7nm ultraviolet source irradiation.In addition, light source can be the long mercury lamp of all-wave.Sample number into spectrum (III) Au-Hg-no is the waste liquid (1) of pH value 14, carries out the long mercury lamp irradiation of all-wave.In addition, sample number into spectrum (IV) Ti-Hg-no is to utilize the 3C waste liquid (2) of the long mercury lamp irradiation of all-wave pH value 1.The reaction process of sample (I) Au-253.7-pH 7, (II) Au-253.7-pH9-10, (III) Au-Hg-no is as shown in Figure 5.The reaction process of sample (IV) Ti-Hg-no is as shown in Figure 6.
As shown in Figure 1, before the irradiation reaction, the waste liquid (1) of sample number into spectrum (I) Au-253.7-pH 7 comprises metals ions such as potassium ion, titanium ion, vanadium ion, iron ion, nickel ion, cupric ion, zine ion, molybdenum ion and cesium ion.Before the irradiation reaction, the waste liquid zine ion of pH value 7 accounts for 85wt%, and cupric ion accounts for 5.1wt%.After the irradiation reaction, zine ion accounts for 2.7wt% in the waste liquid, can not detect content of copper ion.Along with the irradiation time increases, the metal ions in waste liquor density loss.
As shown in Figure 2, after the irradiation reaction, sample number into spectrum (II) Au-253.7-pH9-10, the waste liquid cupric ion accounts for 2.4wt%, and zine ion accounts for 0.6wt%.
Sample number into spectrum (III) Au-Hg-no, carry out irradiation reaction after, the cupric ion of pH value 14 waste liquids (1) accounts for 6.4wt%, zine ion accounts for 84.4wt%.Learn that by Fig. 3 under pH value 14 situation, reaction 25min only has zine ion to be reduced.
Sample number into spectrum (IV) Ti-Hg-no is before the irradiation reaction, and the iron ion of waste liquid (2) accounts for 34.3wt%.After the irradiation reaction, iron ion accounts for 28.1wt% (Fig. 4).Metals ion weight concentration table and photocatalyst recovery time relation table are learnt, before illumination reaction, comprise in the waste liquid: metals ions such as vanadium ion, cadmium ion, mn ion, iron ion, nickel ion, molybdenum ion, cesium ion, promethium ion and tungsten ion.
Fig. 1 to Fig. 4 shows that the situation of metals ion photoreduction is influenced by the pH value.That is to say that the different metallic composition needs under different pH value environment, to reduce.The present invention can be in response to the metal ions in waste liquor composition, and the pH value of adjustment waste liquid is carried out photoreduction afterwards again.PH value setting range is 0 to 14.When comprising silver ions in the waste liquid, should the person adjust the waste liquor PH value and be 9 after 10, carry out the photocatalyst reduction reaction again.When comprising palladium ion, nickel ion in the waste liquid, should the person adjust the waste liquor PH value and be 6 after 7, carry out the photocatalyst reduction reaction again.When comprising cupric ion, zine ion in the waste liquid, should the person adjust the waste liquor PH value and be 6 after 10, carry out the photocatalyst reduction reaction again.
In addition, the present invention can repeatedly repeat to adjust the pH value and carry out the irradiation reaction, but make waste liquid reach the waste discharge standard in response to the metal ions in waste liquor composition.
Though the present invention illustrates as above with preferred embodiments, so it is not only to terminate in the foregoing description in order to limit the present invention's spirit with the invention entity.Allly be familiar with this operator, when understanding and utilize other assembly or mode to produce identical effect easily.Be with, the modification of in not breaking away from spirit of the present invention and category, being done all should be included in the claim protection domain of the present invention.
Claims (9)
1. method of removing heavy metal in the waste liquid, it comprises:
Provide one to contain the heavy metal ion waste liquid;
One photocatalyst material is provided;
Mix said waste liquid and said photocatalyst material; And
Said waste liquid of one light source irradiation and said photocatalyst material are provided, make the most heavy metal species ions in the waste liquid be reduced into most heavy metal species, to reduce concentration of heavy metal ion in the waste liquid.
2. the method for claim 1, wherein this method also comprises a pH value set-up procedure, and before light source irradiation, when comprising silver ions in the waste liquid, adjusting said waste liquor PH value is 9 to 10.
3. the method for claim 1, wherein this method also comprises a pH value set-up procedure, and before light source irradiation, when comprising palladium ion, nickel ion in the waste liquid, adjusting said waste liquor PH value is 6 to 7.
4. the method for claim 1, wherein this method also comprises a pH value set-up procedure, and before light source irradiation, when comprising cupric ion, zine ion in the waste liquid, adjusting said waste liquor PH value is 6 to 10.
5. the method for claim 1, wherein said heavy metal ion is one or more in gold ion, silver ions, cupric ion, zine ion, cadmium ion, chromium ion, mercury ion and the nickel ion.
6. the method for claim 1, wherein said photocatalyst material is selected from: titanium oxide, Tungsten oxide 99.999, red stone, zinc oxide, strontium titanate, Niobium Pentxoxide, White tin oxide, ZIRCONIUM DIOXIDE 99.5, Cadmium Sulfide, zinc sulphide.
7. the method for claim 1, wherein said photocatalyst material concentration in said waste liquid is 5wt% to 10wt%.
8. the method for claim 1, wherein said light source is the pulsed light source.
9. the method for claim 1, wherein said optical source wavelength is 350 to 700nm, and the light source irradiation time is 5 to 60 minutes.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW99143858A TWI441783B (en) | 2010-12-14 | 2010-12-14 | Method of removing heavy metals from wastewater |
| TW099143858 | 2010-12-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102531095A true CN102531095A (en) | 2012-07-04 |
Family
ID=46339316
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101851500A Pending CN102531095A (en) | 2010-12-14 | 2011-07-04 | Method for removing heavy metal in waste liquid |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102531095A (en) |
| TW (1) | TWI441783B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103011478A (en) * | 2013-01-16 | 2013-04-03 | 桂林理工大学 | Method for treating humic acid chelated heavy metal by photocatalytic redox |
| CN104310676A (en) * | 2014-10-13 | 2015-01-28 | 贵州美瑞特环保科技有限公司 | Method for removing mercury compound in waste liquid at normal temperature and normal pressure |
| WO2016197397A1 (en) * | 2015-06-12 | 2016-12-15 | 苏州大学张家港工业技术研究院 | Preparation method and use of photocatalytic degradation-adsorption material |
| CN106396368A (en) * | 2016-04-05 | 2017-02-15 | 济南大学 | Glass colorant preparation method |
| CN107311263A (en) * | 2017-07-07 | 2017-11-03 | 四川大学 | A kind of method of wastewater treatment containing chromium ion and by-product chromium-containing catalyst |
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2010
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2011
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Cited By (6)
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|---|---|---|---|---|
| CN103011478A (en) * | 2013-01-16 | 2013-04-03 | 桂林理工大学 | Method for treating humic acid chelated heavy metal by photocatalytic redox |
| CN104310676A (en) * | 2014-10-13 | 2015-01-28 | 贵州美瑞特环保科技有限公司 | Method for removing mercury compound in waste liquid at normal temperature and normal pressure |
| WO2016197397A1 (en) * | 2015-06-12 | 2016-12-15 | 苏州大学张家港工业技术研究院 | Preparation method and use of photocatalytic degradation-adsorption material |
| CN106396368A (en) * | 2016-04-05 | 2017-02-15 | 济南大学 | Glass colorant preparation method |
| CN107311263A (en) * | 2017-07-07 | 2017-11-03 | 四川大学 | A kind of method of wastewater treatment containing chromium ion and by-product chromium-containing catalyst |
| CN107311263B (en) * | 2017-07-07 | 2020-11-03 | 四川大学 | Method for treating wastewater containing chromium ions and by-producing chromium-containing catalyst |
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| TW201223884A (en) | 2012-06-16 |
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