CN103342410A - Water treatment method for removing arsenic by strengthening zero-valent iron - Google Patents
Water treatment method for removing arsenic by strengthening zero-valent iron Download PDFInfo
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- CN103342410A CN103342410A CN2013103157310A CN201310315731A CN103342410A CN 103342410 A CN103342410 A CN 103342410A CN 2013103157310 A CN2013103157310 A CN 2013103157310A CN 201310315731 A CN201310315731 A CN 201310315731A CN 103342410 A CN103342410 A CN 103342410A
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- arsenic
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- valent iron
- persulphate
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 102
- 229910052785 arsenic Inorganic materials 0.000 title claims abstract description 100
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 title claims abstract description 88
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 83
- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000005728 strengthening Methods 0.000 title claims abstract description 10
- JRKICGRDRMAZLK-UHFFFAOYSA-L peroxydisulfate Chemical compound [O-]S(=O)(=O)OOS([O-])(=O)=O JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 claims abstract description 70
- 238000001914 filtration Methods 0.000 claims abstract description 6
- 239000010865 sewage Substances 0.000 claims abstract description 4
- 239000003814 drug Substances 0.000 claims description 24
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 16
- 239000011734 sodium Substances 0.000 claims description 13
- 229910052708 sodium Inorganic materials 0.000 claims description 13
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 12
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 12
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 12
- 239000011575 calcium Substances 0.000 claims description 12
- 229910052791 calcium Inorganic materials 0.000 claims description 12
- 239000011777 magnesium Substances 0.000 claims description 12
- 229910052749 magnesium Inorganic materials 0.000 claims description 12
- 230000002787 reinforcement Effects 0.000 claims description 11
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 8
- 238000005660 chlorination reaction Methods 0.000 claims description 8
- 229910017604 nitric acid Inorganic materials 0.000 claims description 8
- 235000019394 potassium persulphate Nutrition 0.000 claims description 7
- 239000004159 Potassium persulphate Substances 0.000 claims description 6
- JZBWUTVDIDNCMW-UHFFFAOYSA-L dipotassium;oxido sulfate Chemical compound [K+].[K+].[O-]OS([O-])(=O)=O JZBWUTVDIDNCMW-UHFFFAOYSA-L 0.000 claims description 6
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 6
- 239000002351 wastewater Substances 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 4
- 239000008399 tap water Substances 0.000 claims description 4
- 235000020679 tap water Nutrition 0.000 claims description 4
- 239000011790 ferrous sulphate Substances 0.000 claims description 2
- 235000003891 ferrous sulphate Nutrition 0.000 claims description 2
- 230000008595 infiltration Effects 0.000 claims description 2
- 238000001764 infiltration Methods 0.000 claims description 2
- 230000010354 integration Effects 0.000 claims description 2
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims description 2
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 claims description 2
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims description 2
- 229910000360 iron(III) sulfate Inorganic materials 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 238000001556 precipitation Methods 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 235000020188 drinking water Nutrition 0.000 abstract description 6
- 239000003651 drinking water Substances 0.000 abstract description 6
- 239000003673 groundwater Substances 0.000 abstract description 4
- 238000000151 deposition Methods 0.000 abstract 1
- 231100000086 high toxicity Toxicity 0.000 abstract 1
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- 238000004065 wastewater treatment Methods 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 description 14
- 230000000694 effects Effects 0.000 description 10
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 8
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000002699 waste material Substances 0.000 description 6
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- -1 sulfate radical free radical Chemical class 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 238000005325 percolation Methods 0.000 description 4
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- 239000002352 surface water Substances 0.000 description 3
- LCPVQAHEFVXVKT-UHFFFAOYSA-N 2-(2,4-difluorophenoxy)pyridin-3-amine Chemical compound NC1=CC=CN=C1OC1=CC=C(F)C=C1F LCPVQAHEFVXVKT-UHFFFAOYSA-N 0.000 description 2
- 230000000274 adsorptive effect Effects 0.000 description 2
- 238000009303 advanced oxidation process reaction Methods 0.000 description 2
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- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 description 2
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Abstract
The invention relates to a technology for removing and controlling arsenic which has very high toxicity in water, and discloses a water treatment method for removing arsenic by strengthening zero-valent iron, which can be used for groundwater repair, drinking water treatment, industrial arsenic-containing wastewater treatment, sewage deep treatment and integrated small-scale water treatment systems. The water treatment method specifically comprises the following steps of: adding persulfate and zero-valent iron into water containing arsenic, wherein the persulfate is added in a molar ratio of the persulfate to arsenic of (5:1)-(100:1), and the molar ratio of the zero-valent iron to the persulfate in the water is (1:1)-(10:1); and when the mixed solution is fully mixed, filtering or depositing to finish the removal of arsenic. The water treatment method is very simple to operate, easy to popularize and apply and safe to use, and can be used for ensuring the water quality safety.
Description
?
Technical field
The present invention relates to removal and the control techniques of the very big arsenic of water intoxication, more specifically, relate to a kind of water treatment method that can be used for the reinforcement Zero-valent Iron arsenic removal of underground water reparation, drinking water treatment, industrial arsenic-containing waste water processing, advanced treatment of wastewater and integrated small-sized water treatment system.
Background technology
Arsenic and arsenic compound are typical " three cause " materials, and the high arsenic water of long-term drinking can cause black leg, neurodynia, blood vessel injury and increase the heart trouble sickness rate.Tens provinces, autonomous regions such as the Xinjiang of China, Shanxi, the Inner Mongol, Jilin, Ningxia, Qinghai have found tap water arseniasis, and pollution situation is very serious, and wherein the pollution of arsenic from underwater is particularly serious, also have arsenic contamination in various degree in the surface water.In natural water, arsenic mainly exists with As (III) and two kinds of forms of As (V), and the toxicity of As (III) exceeds 60 times than As (V).The limit value concentration of " drinking water sanitary standard " regulation arsenic that China promulgated in 2006 is 10 μ g/L, but according to the monitoring result of Environmental Sanitation Inst., China Preventive Medical Science Academy, the concentration of arsenic surpasses the exposed population group of this limit value above survey group's 15% in the Drinking Water in China.Therefore, the arsenic removal technology of development efficient economy is present water treatment field problem demanding prompt solution.
Arsenic removal technology can be divided into coagulant sedimentation, ion exchange method, reverse osmosis method and absorption method in the water of using always at present.The coagulant sedimentation arsenic removal is easy, easy to implement, match with oxygenant, also can remove As (III) and As (V) in the water simultaneously, but this method is difficult to the concentration of arsenic in the water is dropped to qualified discharge, and can produce a large amount of arsenic-containing waste residues, cause second environmental pollution.Ion exchange method arsenic removal efficient is not high usually, because other can be higher than the concentration of arsenic usually with the ionic concn of arsenic competition far away.The reverse osmosis process effect of removing arsenic is good, but this technology is very expensive, and needs pre-treatment.Absorption method has advantages such as processing efficiency height, adsorptive hindrance are little when handling the lower water of arsenic content, and the sorbent material repeated use of can regenerating, can not cause secondary pollution to environment, shortcoming is that action time is longer, and processing costs is higher, and undesirable to the treatment effect of As (III).
Zero-valent Iron is a kind of functional, cheap arsenic-removing adsorption agent, abroad large-scale application in the underground water reparation.Zero-valent Iron is stronger to the adsorptive power of As (V), but general to the removal effect of As (III).Simultaneously, Zero-valent Iron has reducing power, under anoxia condition, As (V) can be reduced to As (III), is unfavorable for the removal of arsenic.Therefore, As (III) being oxidized to As (V) is a key factor effectively removing arsenic.
Utilizing advanced oxidation processes, As (III) is oxidized to As (V), is a valid approach that improves the Zero-valent Iron effect of removing arsenic.Simultaneously, the free radical that produces in the advanced oxidation processes can be the ferriferous oxide of nascent state with the Zero-valent Iron surface oxidation fast, and these ferriferous oxides have higher arsenic loading capacity than Zero-valent Iron.
In sum, be necessary very much to research and develop a kind of can be effectively, the water technology of economic, safe reinforcement Zero-valent Iron arsenic removal, this technology not only can be used for underground water reparation and drinking water treatment, can also be used for industrial arsenic-containing waste water processing, advanced treatment of wastewater and integrated small-sized water treatment system.
Summary of the invention
In order to overcome the deficiencies in the prior art, the present invention proposes a kind of water treatment method of strengthening the Zero-valent Iron arsenic removal, method of the present invention can efficiently be removed the arsenic in the water, wherein arsenic comprises As (III), As (V) and organoarsenic, reach the standard of " drinking water sanitary standard " regulation arsenic, be lower than 10 μ g/L.
To achieve these goals, technical scheme of the present invention is:
A kind of water treatment method of strengthening the Zero-valent Iron arsenic removal, in the water that contains arsenic, add persulphate and Zero-valent Iron, the dosage of persulphate is that 5:1 ~ 100:1 adds by the mol ratio of itself and arsenic, the mol ratio of Zero-valent Iron and persulphate is 1:1 ~ 10:1 in the water, and the abundant hybrid filtering of liquid to be mixed or precipitation are finished the removal of arsenic.
Further, described persulphate be in Potassium Persulphate/sodium/ammonium/calcium/magnesium/ammonium and the Potassium peroxysulfate/sodium/ammonium/calcium/magnesium/ammonium any one or multiple.
In order to strengthen the removal effect of arsenic, also contain and add the collaborative medicament of persulphate in the water of arsenic, the collaborative medicament of described persulphate comprises one or more in chlorination/nitric acid/ferrous sulfate and the chlorination/nitric acid/ferric sulfate; The dosage of the collaborative medicament of described persulphate is 0.1:1 ~ 1:1 by the mol ratio of itself and persulphate dosage.
Principle of the present invention is, by adding persulphate and its collaborative medicament is strengthened the Zero-valent Iron arsenic removal, Zero-valent Iron can the catalysis persulphate produces the sulfate radical free radical (SO of strong oxidizing property
4 –), its redox potential is 2.5 –, 3.1 V, is higher than hydroxyl radical free radical (OH) (1.9 –, 2.0 V) under neutrality or alkaline condition, and is close with OH (2.4 –, 2.7 V) under acidic conditions.SO
4 –Can efficiently rapidly the As in the water (III) be oxidized to As (V), simultaneously, the Zero-valent Iron surface is by persulphate and SO
4 –Be oxidized to nascent state oxidation iron, can adsorb As (V) more efficiently.Iron ion in the collaborative medicament of persulphate and the adding of ferrous ion can promote that persulphate decomposes faster, produce more SO
4 –Thereby, make the degradation speed of As (III) faster.The present invention can remove arsenic in the water fully, than the efficient raising 50 ~ 100% of existing Zero-valent Iron absorption arsenic removal.Produce SO behind the sulfate radical free-radical oxidn arsenic
4 2-, little to water quality impact.
As(III)?+?SO
4 ·–?→?As(IV)?+?SO
4 2–
As(IV)?+?SO
4 ·–?→?As(V)?+?SO
4 2–
As(IV)?+?O
2?+?H
+?→?As(V)?+?HO
2/O
2 –
Further, described Zero-valent Iron is: powder Zero-valent Iron, Zero-valent Iron filter post or Zero-valent Iron infiltration wall.Zero-valent Iron can adopt the iron waste of commercially available Zero-valent Iron, nano zero valence iron or source mill, as: filings, smear metal, shavings and iron powder etc.; The hybrid reaction mode comprises that tube mixer mixes, and stirring rake stirs, waterpower stirring etc.
Further, the described water that contains arsenic is one or more in underground water, tap water, industrial arsenic-containing waste water, sewage or the integration of compact water.The present invention not only can be used in the removal of arsenic in the reparation, tap water of rural area and urban groundwater, can also be used for the removal of sewage and trade effluent arsenic.According to different water bodys, can design different reactor configuration and medicament proportioning according to water quality requirement and design specifications, reach the purpose of arsenic in the quick removal water.
Further, the content of the arsenic in the described water that contains arsenic is: 0 ~ 1 g/L.
Further, the dosing method of the collaborative medicament of described persulphate and persulphate adds for the solid powder or the solution form adds.
Further, the described water PH that contains arsenic〉any pH scope of 2, if pH is too little, Zero-valent Iron has all been dissolved, and is not suitable for handling with Zero-valent Iron.The present invention is to pH〉arsenic in any water body under 2 conditions all has good degradation effect, during practical application, can regulate medicament throwing amount according to different water quality characteristics, reaches removing the most fast of arsenic.
Compared with prior art, beneficial effect of the present invention: the present invention's operation is very simple, is easy to apply; Use safety, can be used for ensureing water quality safety.
Description of drawings
Fig. 1 is the removal effect figure of 3 couples of As of the embodiment of the invention (III).
Fig. 2 is the removal effect figure of 3 couples of As of the embodiment of the invention (V).
Embodiment
The present invention will be further described below in conjunction with accompanying drawing, but embodiments of the present invention are not limited to this.
Embodiment one
Present embodiment " a kind of water treatment method of strengthening the Zero-valent Iron arsenic removal " is carried out by the following method: add persulphate and Zero-valent Iron in the water that contains arsenic, make that the mol ratio of Zero-valent Iron and persulphate is 1:1 ~ 10:1 in the water, the mol ratio of persulphate and arsenic is 5:1 ~ 100:1, with the speed stirring reaction 5-60 min of mixing solutions with 50 ~ 300 rev/mins, filter the removal of namely finishing As then.
The water that present embodiment contains arsenic refers to contain one or more underground water or the surface water in As (III), As (IV) and the organoarsenic.Persulphate is Potassium Persulphate (sodium, ammonium, calcium, magnesium), Potassium peroxysulfate (sodium, ammonium, calcium, magnesium).Zero-valent Iron can adopt the iron waste of commercially available Zero-valent Iron, nano zero valence iron or source mill, as filings, smear metal, shavings and iron powder etc.
Embodiment two
What present embodiment and embodiment one were different is except adding persulphate, adds the collaborative medicament of persulphate simultaneously, the collaborative medicament of persulphate be in (chlorination, nitric acid, sulfuric acid) ferrous/iron one or more.Other are identical with embodiment one.
In the present embodiment, the dosage of the collaborative medicament of persulphate is 0.1:1 ~ 1:1 with the molar equivalent ratio of the dosage of persulphate.
Embodiment three
This embodiment one " a kind of water treatment method of strengthening the Zero-valent Iron arsenic removal " is carried out by the following method: add persulphate in the water that contains arsenic, and fully mix, the mol ratio that makes persulphate and arsenic is 5:1 ~ 100:1, then with mixing solutions by with the Zero-valent Iron being the filter post of main component, namely finish the reinforcement of As after filtering and remove.
The water that present embodiment contains arsenic refers to contain one or more underground water or the surface water in As (III), As (IV) and the organoarsenic.Persulphate is Potassium Persulphate (sodium, ammonium, calcium, magnesium), Potassium peroxysulfate (sodium, ammonium, calcium, magnesium).Zero-valent Iron can adopt the iron waste of commercially available Zero-valent Iron, source mill, as filings, smear metal, shavings and iron powder etc.
Fig. 1 be this embodiment to the removal effect figure of As (III), institute's water is the laboratory water distribution, adding As (III) in the pure water, to make its concentration be 0.8 mg/L (10 μ M), and adopt NaHCO
3, to regulate pH value be neutral for HCl and NaOH, adds 100 μ M Sodium Persulfates then and mix, and filters the post filtration through Zero-valent Iron again; Move one group of control experiment in addition, condition is similar, and difference is not add Sodium Persulfate.Wherein left side histogram be independent Zero-valent Iron to the clearance of arsenic, the histogram on the right is that persulphate is strengthened Zero-valent Iron to the clearance of arsenic.
Fig. 2 be present embodiment to the removal effect figure of As (V), institute's water is the laboratory water distribution, adding As (V) in the pure water, to make its concentration be 0.8 mg/L (10 μ M), and adopt NaHCO
3, to regulate pH value be neutral for HCl and NaOH, adds or do not add 100 μ M Potassium Persulphates then and receive and mix, and filters the post filtration through Zero-valent Iron again; Move one group of control experiment in addition, condition is similar, and difference is not add Sodium Persulfate.Wherein left side histogram be Zero-valent Iron to the clearance of arsenic, the histogram on the right is that persulphate is strengthened Zero-valent Iron to the clearance of arsenic.
Embodiment four
What present embodiment and embodiment three were different is except adding persulphate, the collaborative medicament that adds persulphate simultaneously: one or more in (chlorination, nitric acid, sulfuric acid) ferrous/iron, make even hybrid reaction 2 ~ 10 min of collaborative medicament, persulphate and arsenic of persulphate, the Zero-valent Iron of flowing through again filter post.Other are identical with embodiment.
In the present embodiment, the dosage of the collaborative medicament of persulphate is 0.1:1 ~ 1:1 with the molar equivalent ratio of the dosage of persulphate.
Embodiment five
Present embodiment " a kind of water treatment method of strengthening the Zero-valent Iron arsenic removal " is carried out by the following method: inject persulfate solution to the upstream that with the Zero-valent Iron is the former site percolation wall of underground water of main component, make persulfate solution and contain As groundwater and evenly mix, when the groundwater flow that contains arsenic and persulphate during through former site percolation wall, namely finish the reinforcement of arsenic and remove.The mol ratio of persulphate and arsenic is 5:1 ~ 100:1 in the present embodiment.
The water that present embodiment contains arsenic refers to contain one or more the underground water in As (III), As (IV) and the organoarsenic.Persulphate is Potassium Persulphate (sodium, ammonium, calcium, magnesium), Potassium peroxysulfate (sodium, ammonium, calcium, magnesium).Zero-valent Iron can adopt the iron waste of commercially available Zero-valent Iron, source mill, as filings, smear metal, shavings and iron powder etc.
Embodiment six
Present embodiment and embodiment five are different is upstream at the former site percolation wall of Zero-valent Iron, except adding persulphate, the collaborative medicament that adds persulphate simultaneously: one or more in (chlorination, nitric acid, sulfuric acid) ferrous/iron, make the even hybrid reaction 2 ~ 10min of arsenic in collaborative medicament, persulphate and the underground water of persulphate, the former site percolation wall of flowing through again.Other are identical with embodiment three.
In the present embodiment, the dosage of the collaborative medicament of persulphate is 0.1:1 ~ 1:1 with the molar equivalent ratio of the dosage of persulphate.
Embodiment seven
Present embodiment " a kind of water treatment method of strengthening the Zero-valent Iron arsenic removal " is carried out by the following method: set up the active reaction zone in by the underground water of arsenic contamination, in the active reaction zone, add Zero-valent Iron and persulphate, make that the mol ratio of Zero-valent Iron and persulphate is 1:1 ~ 10:1 in the water, the mol ratio of persulphate and arsenic is 5:1 ~ 100:1, hybrid reaction 5-60 min, post precipitation namely finish the removal of arsenic.Persulphate is Potassium Persulphate (sodium, ammonium, calcium, magnesium), Potassium peroxysulfate (sodium, ammonium, calcium, magnesium).Zero-valent Iron can adopt the iron waste of nano zero valence iron, commercially available Zero-valent Iron or source mill, as filings, smear metal, shavings and iron powder etc.
Embodiment eight
What present embodiment and embodiment seven were different is except adding persulphate, the collaborative medicament that adds persulphate simultaneously: one or more in (chlorination, nitric acid, sulfuric acid) ferrous/iron, make arsenic reaction 5 ~ 60 min in collaborative medicament, persulphate, Zero-valent Iron and the underground water of persulphate, post precipitation is namely finished the removal of arsenic.
In the present embodiment, the dosage of the collaborative medicament of persulphate is 0.1:1 ~ 1:1 with the molar equivalent ratio of the dosage of persulphate.
Above-described embodiments of the present invention do not constitute the restriction to protection domain of the present invention.Any modification of within spiritual principles of the present invention, having done, be equal to and replace and improvement etc., all should be included within the claim protection domain of the present invention.
Claims (8)
1. water treatment method of strengthening the Zero-valent Iron arsenic removal, it is characterized in that, in the water that contains arsenic, add persulphate and Zero-valent Iron, the dosage of persulphate is that 5:1 ~ 100:1 adds by the mol ratio of itself and arsenic, the mol ratio of Zero-valent Iron and persulphate is 1:1 ~ 10:1 in the water, and the abundant hybrid filtering of liquid to be mixed or precipitation are finished the removal of arsenic.
2. the water treatment method of reinforcement Zero-valent Iron according to claim 1 arsenic removal is characterized in that, described persulphate be in Potassium Persulphate/sodium/ammonium/calcium/magnesium/ammonium and the Potassium peroxysulfate/sodium/ammonium/calcium/magnesium/ammonium any one or multiple.
3. the water treatment method of reinforcement Zero-valent Iron according to claim 1 and 2 arsenic removal, it is characterized in that, also comprise in the water that contains arsenic adding the collaborative medicament of persulphate, the collaborative medicament of described persulphate comprises one or more in chlorination/nitric acid/ferrous sulfate and the chlorination/nitric acid/ferric sulfate; The dosage of the collaborative medicament of described persulphate is 0.1:1 ~ 1:1 by the mol ratio of itself and persulphate dosage.
4. the water treatment method of reinforcement Zero-valent Iron according to claim 3 arsenic removal is characterized in that, described Zero-valent Iron is: powder Zero-valent Iron, Zero-valent Iron filter post or Zero-valent Iron infiltration wall.
5. the water treatment method of reinforcement Zero-valent Iron according to claim 4 arsenic removal is characterized in that, the described water that contains arsenic is one or more in underground water, tap water, industrial arsenic-containing waste water, sewage or the integration of compact water.
6. the water treatment method of reinforcement Zero-valent Iron according to claim 5 arsenic removal is characterized in that, the content of the arsenic in the described water that contains arsenic is: 0 ~ 1 g/L.
7. the water treatment method of reinforcement Zero-valent Iron according to claim 3 arsenic removal is characterized in that, the dosing method of the collaborative medicament of described persulphate and persulphate adds for the solid powder or the solution form adds.
8. the water treatment method of reinforcement Zero-valent Iron according to claim 7 arsenic removal is characterized in that, the described water PH that contains arsenic〉any pH scope of 2.
Priority Applications (1)
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6932909B2 (en) * | 2002-01-15 | 2005-08-23 | Kroff Chemical Company, Inc. | Method of treating mine drainage |
| JP2007038113A (en) * | 2005-08-02 | 2007-02-15 | Kobe Steel Ltd | Organic arsenic compound-containing water treatment method |
| CN101139150A (en) * | 2007-08-15 | 2008-03-12 | 哈尔滨工业大学 | Preoxidized-composite electrolyzing method for removing arsenic in groundwater |
| CN102642951A (en) * | 2012-05-07 | 2012-08-22 | 哈尔滨工程大学 | Method combining oxidizing composite reagent and activated carbon to remove arsenic in water |
| CN102910709A (en) * | 2012-11-01 | 2013-02-06 | 中国地质大学（武汉） | In-situ remediation method for organic contaminated underground water |
| CN102992467A (en) * | 2012-12-10 | 2013-03-27 | 复旦大学 | Sewage treatment method adopting zero-valent scrap as carrier |
-
2013
- 2013-07-25 CN CN201310315731.0A patent/CN103342410B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6932909B2 (en) * | 2002-01-15 | 2005-08-23 | Kroff Chemical Company, Inc. | Method of treating mine drainage |
| JP2007038113A (en) * | 2005-08-02 | 2007-02-15 | Kobe Steel Ltd | Organic arsenic compound-containing water treatment method |
| CN101139150A (en) * | 2007-08-15 | 2008-03-12 | 哈尔滨工业大学 | Preoxidized-composite electrolyzing method for removing arsenic in groundwater |
| CN102642951A (en) * | 2012-05-07 | 2012-08-22 | 哈尔滨工程大学 | Method combining oxidizing composite reagent and activated carbon to remove arsenic in water |
| CN102910709A (en) * | 2012-11-01 | 2013-02-06 | 中国地质大学（武汉） | In-situ remediation method for organic contaminated underground water |
| CN102992467A (en) * | 2012-12-10 | 2013-03-27 | 复旦大学 | Sewage treatment method adopting zero-valent scrap as carrier |
Cited By (31)
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