CN102603054A - Water treatment method for catalyzing ozone by utilizing nano silver - Google Patents

Water treatment method for catalyzing ozone by utilizing nano silver Download PDF

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Publication number
CN102603054A
CN102603054A CN201210068613XA CN201210068613A CN102603054A CN 102603054 A CN102603054 A CN 102603054A CN 201210068613X A CN201210068613X A CN 201210068613XA CN 201210068613 A CN201210068613 A CN 201210068613A CN 102603054 A CN102603054 A CN 102603054A
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ozone
water treatment
nanometer silver
treatment method
utilizes
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CN201210068613XA
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Chinese (zh)
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马军
宋阳
刘永泽
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Harbin Institute of Technology
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Harbin Institute of Technology
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Abstract

The invention provides a water treatment method for catalyzing ozone by utilizing nano silver, which relates to a method of water treatment. According to the water treatment method for catalyzing the ozone by utilizing the nano silver, the problem of low reaction efficiency existing in a water treatment method for independent ozone oxidation is solved. The method comprises the following steps that: ozone is introduced into an ozone contact reactor containing sewage, nano silver is simultaneously added, and then the reaction retention time is controlled to 5 to 90min under the condition of keeping the operation of stirring so as to finish the water treatment of catalyzing the ozone by utilizing the nano silver. According to the water treatment method for catalyzing the ozone by utilizing the nano silver, the removing rate of nitrobenzene reaches more than 99 percent.

Description

A kind of water treatment method that utilizes the nanometer silver catalysis ozone
Technical field
The present invention relates to a kind of method of water treatment.
Background technology
Ozone is a kind of strong oxidizer, and the redox potential under standard state is+2.07V, contains two isostructural easy oxidation of organic compounds of key for some, and ozone is oxidative degradation fast.In water treatment, ozone has purposes widely, can remove algae, decolouring, remove and smell flavor, intensified coagulation, oxidation removal organism, raising hardly degraded organic substance and natural macromolecular biodegradability of organic matter etc.In recent years, because common process is limited to toxic organics removal efficient, and meeting produces difficult problems such as DBPs in the chlorine disinfectant process, and ozone technology has obtained widespread use and research in the water treatment practice.Ozone can react through dual mode and organism in water, and the one, ozone molecule and organic direct reaction, the one, impel ozone to be decomposed into the indirect reaction of hydroxyl radical free radical by hydroxide radical etc. as initiator.The direct reaction of ozone has stronger selectivity; Material for difficult degradations such as benzene class, nitrobenzene, carboxylic-acid and agricultural chemicals; The rate constant of ozone direct reaction is very low, and speed of reaction is slow, reaction efficiency is low, is difficult under the actual production operational conditions these materials are removed.In order to strengthen the efficient of ozonation technology, the normal method that adds catalyzer that adopts promotes ozone to be decomposed into hydroxyl radical free radical, and then accelerates organic oxidation and mineralising.
Summary of the invention
The objective of the invention is to the invention provides a kind of water treatment method that utilizes the nanometer silver catalysis ozone in order to solve the low problem of reaction efficiency that independent ozone oxidation water treatment method exists.
A kind of water treatment method of nanometer silver catalysis ozone that utilizes is following:
In the ozone contact reaction device that fills sewage, feed ozone, add nanometer silver simultaneously, keeping under the stirring condition then, the control reaction time is 5min-90min, has promptly accomplished the water treatment that utilizes the nanometer silver catalysis ozone; Wherein the starting point concentration of ozone is 0.1mg/L-30mg/L, and the mol ratio of nanometer silver and ozone is 1: 0.1-15.
The dosing method of the nanometer silver described in the present invention adopts the form of Nano silver solution to add.
The sewage of handling through the inventive method need pass through activated carbon filter, so nanometer silver can be held back, adsorb by gac, can utilize again after nanometer silver is recovered, to not influence of follow-up water outlet.
In the water treatment method that utilizes the nanometer silver catalysis ozone of the present invention, nanometer silver is following as the advantage of new catalyst: it is strong that the ozone resolving power is brought out in (1); (2) the catalysis ozone residual content is few, and itself has sterilizing function; (3) preparation easily; (4) in reaction, catalyst nano silver can recycle, and consumes nano-silver catalyst hardly.
The hydroxyl radical free radical oxidation depollution that the water treatment method that utilizes the nanometer silver catalysis ozone of the present invention utilizes the nanometer silver catalysis ozone in reaction process, to produce with strong oxidizing property; Compare with independent ozone oxidation; Advantages such as oxidation efficiency is high, oxidation capacity strong, pH value wide ranges, catalyzer can be recycled, operation makes things convenient for can large-scale application.The accessible water of water treatment method of the present invention comprises water after sewage, Sewage Plant secondary effluent, source water and the filter.Utilize the clearance of the water treatment method p-nitrophenyl of nanometer silver catalysis ozone to reach more than 99%.
Description of drawings
Fig. 1 is the clearance curve that utilizes the water treatment method p-nitrophenyl of nanometer silver catalysis ozone in the embodiment ten; Fig. 2 is the clearance curve that utilizes the water treatment method p-nitrophenyl of ozone in the embodiment ten.
Embodiment
Technical scheme of the present invention is not limited to following cited embodiment, also comprises the arbitrary combination between each embodiment.
Embodiment one: a kind of water treatment method of nanometer silver catalysis ozone that utilizes of this embodiment is following:
In the ozone contact reaction device that fills sewage, feed ozone, add nanometer silver simultaneously, keeping under the stirring condition then, the control reaction time is 5min-90min, has promptly accomplished the water treatment that utilizes the nanometer silver catalysis ozone; Wherein the starting point concentration of ozone is 0.1mg/L-30mg/L, and the mol ratio of nanometer silver and ozone is 1: 0.1-15.
The dosing method of nanometer silver is that the form of Nano silver solution adds in this embodiment.
The hydroxyl radical free radical oxidation depollution that utilizes the water treatment method of nanometer silver catalysis ozone to utilize the nanometer silver catalysis ozone in reaction process, to produce in this embodiment with strong oxidizing property; Compare with independent ozone oxidation; Advantages such as oxidation efficiency is high, oxidation capacity strong, pH wide ranges, catalyzer can be recycled, operation makes things convenient for can large-scale application.
Embodiment two: this embodiment and embodiment one are different is that the starting point concentration of said ozone is 1mg/L-20mg/L.Other is identical with embodiment one.
Embodiment three: this embodiment is different with one of embodiment one or two is that the starting point concentration of said ozone is 10mg/L.Other is identical with one of embodiment one or two.
Embodiment four: this embodiment is different with one of embodiment one to three is that the starting point concentration of said ozone is 15mg/L.Other is identical with one of embodiment one to three.
Embodiment five: this embodiment is different with one of embodiment one to four is that the mol ratio of said nanometer silver and ozone is 1: 0.2-12.Other is identical with one of embodiment one to four.
Embodiment six: this embodiment is different with one of embodiment one to five is that the mol ratio of said nanometer silver and ozone is 1: 0.5-10.Other is identical with one of embodiment one to five.
Embodiment seven: this embodiment is different with one of embodiment one to six is that the mol ratio of said nanometer silver and ozone is 1: 1-9.Other is identical with one of embodiment one to six.
Embodiment eight: this embodiment is different with one of embodiment one to seven is that the mol ratio of said nanometer silver and ozone is 1: 5.Other is identical with one of embodiment one to seven.
Embodiment nine: what this embodiment was different with one of embodiment one to eight is that said reaction time is 10min-70min.Other is identical with one of embodiment one to eight.
Embodiment ten: what this embodiment was different with one of embodiment one to nine is that said reaction time is 50min.Other is identical with one of embodiment one to nine.
This embodiment adopts following experimental verification effect of the present invention:
Utilize the water treatment method of nanometer silver catalysis ozone following:
In the ozone contact reaction device that fills sewage, feed ozone, add nanometer silver simultaneously, keeping under the stirring condition then, the control reaction time is 80min, has promptly accomplished the water treatment that utilizes the nanometer silver catalysis ozone; Wherein the starting point concentration of ozone is 10mg/L, and the mol ratio of nanometer silver and ozone is 1: 5, and the concentration of oil of mirbane is 0.5mg/L in the sewage.
Utilize the water treatment method of ozone following:
In the ozone contact reaction device that fills sewage, feed ozone, keeping under the stirring condition then, the control reaction time is 80min, has promptly accomplished the water treatment that utilizes the nanometer silver catalysis ozone; Wherein the starting point concentration of ozone is 10mg/L, and the concentration of oil of mirbane is 0.5mg/L in the sewage.
Can know by Fig. 1 and Fig. 2 contrast, utilize the clearance of the water treatment method p-nitrophenyl of nanometer silver catalysis ozone to reach more than 99%.

Claims (10)

1. water treatment method that utilizes the nanometer silver catalysis ozone; It is characterized in that a kind of water treatment method of nanometer silver catalysis ozone that utilizes is following: in the ozone contact reaction device that fills sewage, feed ozone; Add nanometer silver simultaneously; Keeping under the stirring condition then, the control reaction time is 5min-90min, has promptly accomplished the water treatment that utilizes the nanometer silver catalysis ozone; Wherein the starting point concentration of ozone is 0.1mg/L-30mg/L, and the mol ratio of nanometer silver and ozone is 1: 0.1-15.
2. according to the said a kind of water treatment method that utilizes the nanometer silver catalysis ozone of claim 1, the starting point concentration that it is characterized in that said ozone is 1mg/L-20mg/L.
3. according to the said a kind of water treatment method that utilizes the nanometer silver catalysis ozone of claim 1, the starting point concentration that it is characterized in that said ozone is 10mg/L.
4. according to the said a kind of water treatment method that utilizes the nanometer silver catalysis ozone of claim 1, the starting point concentration that it is characterized in that said ozone is 15mg/L.
5. according to claim 1,2,3 or 4 said a kind of water treatment method that utilize the nanometer silver catalysis ozone, the mol ratio that it is characterized in that said nanometer silver and ozone is 1: 0.2-12.
6. according to claim 1,2,3 or 4 said a kind of water treatment method that utilize the nanometer silver catalysis ozone, the mol ratio that it is characterized in that said nanometer silver and ozone is 1: 0.5-10.
7. according to claim 1,2,3 or 4 said a kind of water treatment method that utilize the nanometer silver catalysis ozone, the mol ratio that it is characterized in that said nanometer silver and ozone is 1: 1-9.
8. according to claim 1,2,3 or 4 said a kind of water treatment method that utilize the nanometer silver catalysis ozone, the mol ratio that it is characterized in that said nanometer silver and ozone is 1: 5.
9. according to claim 1,2,3 or 4 said a kind of water treatment method that utilize the nanometer silver catalysis ozone, it is characterized in that said reaction time is 10min-70min.
10. according to claim 1,2,3 or 4 said a kind of water treatment method that utilize the nanometer silver catalysis ozone, it is characterized in that said reaction time is 50min.
CN201210068613XA 2012-03-15 2012-03-15 Water treatment method for catalyzing ozone by utilizing nano silver Pending CN102603054A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103344593A (en) * 2013-07-19 2013-10-09 广西师范大学 Analysis method for determining nano silver luminosity of ozone
CN112591869A (en) * 2020-11-21 2021-04-02 江西挺进环保科技有限公司 Treatment method of organic wastewater

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1868916A (en) * 2006-06-07 2006-11-29 哈尔滨工业大学 Catalytic ozonization water treatment method
CN1868917A (en) * 2006-06-07 2006-11-29 哈尔滨工业大学 Carbon nanometer pipe catalytic ozonization water treatment method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1868916A (en) * 2006-06-07 2006-11-29 哈尔滨工业大学 Catalytic ozonization water treatment method
CN1868917A (en) * 2006-06-07 2006-11-29 哈尔滨工业大学 Carbon nanometer pipe catalytic ozonization water treatment method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103344593A (en) * 2013-07-19 2013-10-09 广西师范大学 Analysis method for determining nano silver luminosity of ozone
CN103344593B (en) * 2013-07-19 2015-10-28 广西师范大学 Measure the Nano Silver method for photometric analysis of ozone
CN112591869A (en) * 2020-11-21 2021-04-02 江西挺进环保科技有限公司 Treatment method of organic wastewater
CN112591869B (en) * 2020-11-21 2023-02-17 江西挺进环保科技股份有限公司 Treatment method of organic wastewater

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Application publication date: 20120725