CN101088926A - Combined water-treating farrate-fenton reagent process - Google Patents
Combined water-treating farrate-fenton reagent process Download PDFInfo
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- CN101088926A CN101088926A CN 200610061047 CN200610061047A CN101088926A CN 101088926 A CN101088926 A CN 101088926A CN 200610061047 CN200610061047 CN 200610061047 CN 200610061047 A CN200610061047 A CN 200610061047A CN 101088926 A CN101088926 A CN 101088926A
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- ferrate
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Abstract
The present invention relates to combined water-treating ferrate and Fenton-like reagent process for eliminating toxic and hard-to-biodegrade organic pollutant from water. The process includes throwing ferrate into water to react for certain time, throwing hydrogen peroxide into the water through fast stirring to react, depositing the resultant for certain time and solid-liquid separating. In the process, Fe3+ as the side product of ferrate oxidizing process and the added hydrogen peroxide constitute one Fenton-like system to produce free hydroxyl radical with high oxidizing performance to oxidize the organic pollutant in water without selectivity, so as to eliminate hard-to-biodegrade organic pollutant from water. The process has the features of saving energy and high efficiency.
Description
Technical field
The present invention relates to the water treatment method of a kind of ferrate and class-Fenton coupling.Especially relate to removal method poisonous in a kind of hydroxyl radical free radical fortified water, the bio-refractory organic pollutant.
Background technology
Aspect poisonous in eliminating water, the bio-refractory organism, ferrate [FeO
4 2-(VI)] oxidation style has relatively more outstanding advantage.Under strong acidic condition, (+2.20V) redox potential is higher than O to ferrate
3(+2.07V) is to be used for water and the strongest oxygenant of wastewater treatment oxidation susceptibility at present.What is more important, ferrate is reduced to Fe in oxidising process
3+Or Fe (OH)
3, the further hydrolysis of product has the effect of coagulation, and without any toxic side effect.Therefore, ferrate is as a kind of two effect novel water-treatment medicaments with strong oxidizing property and coagulation, and it has received special concern in recent years in the feedwater Application on Treatment.Proved that Ferrate Pre-Oxidation Positive can remove natural and artificial synthetic organic materials to some extent, reduce the generation gesture of sterilizing process chlorinated secondary product, and had sterilization, remove algae, effect such as help with fixed attention.
But ferrate decomposes very soon in water under acidic conditions, and the oxygenizement time is very short, and some more dysoxidizable oxidation operations are incomplete.In addition, as the ferric iron of reduzate, its water purification usefulness is not brought into play fully yet.In order to remedy above deficiency, be necessary in this case ferrate and other water treatment agent are united use, reach the purpose of mutually promoting, further improving the depollution effect.
Summary of the invention
The present invention decomposes under acidic conditions soon in order to solve ferrate, the oxygenizement time is short, incomplete to some than the oxidation operation of difficult degradation, the problem that the ferric water purification usefulness of its reduzate is not also brought into play fully, the water treatment method of a kind of ferrate and class-Fenton coupling is provided, it can effectively utilize the by product in the ferrate oxidation process, and solves ferrate to the incomplete problem of some more dysoxidizable organic pollutant oxidations in the water.
For solving the problems of the technologies described above, the present invention adopts following technical scheme that the water treatment method of a kind of ferrate and class-Fenton coupling is provided, and comprises the steps:
Ferrate oxidation step: in pending water, drop into the ferrate medicament, the reaction certain hour;
Class-Fenton process oxidation step: add hydrogen peroxide in the water after ferrate is handled, quick stirring back commentaries on classics is stirred to reaction at a slow speed and finishes;
Precipitate and separate step:, carry out solid-liquid separation with above-mentioned reaction solution precipitation certain hour.
Because adopt technique scheme, the present invention has following beneficial effect:
1. this technology is applicable to the processing to the organic pollutant of different concns and different qualities, and removing usefulness can reach more than 90%.
2. this technology is in oxidising process, and ferrate is reduced to Fe
3+Or Fe (OH)
3, the further hydrolysis of product has the effect of coagulation, and without any toxic side effect, can not produce any secondary pollution to water body.
3. this technology has remedied ferrate oxidation short and Fe action time with ferrate and class-Fenton coupling
3+The deficiency do not brought into play fully of water purification usefulness, reach the purpose of mutually promoting, further improving the depollution effect.
4. this technology is applicable to the processing of organic pollutant under the condition of different pH, and is respond well, applied range.
5. this technology can change organic constitution at oxidation stage its biodegradability is improved, and can save processing cost with other water technology coupling.
Description of drawings
Accompanying drawing 1: with source water or waste water is the technical process of the water treatment method of the ferrate of water inlet and class-Fenton coupling;
Accompanying drawing 2: to filter back water is the technical process of the water treatment method of the ferrate of water inlet and class-Fenton coupling.
Embodiment
Because the strong oxidizing property of ferrate can be a process object with source water, waste water or filter back water directly.
Source water or waste water 1 are inputed to ferrate add pond 3, carry out the ferrate oxidation processing by in treating water, adding ferrate medicament 2, water is 5～30min in the residence time that ferrate adds the pond, ferrate throwing amount is 0.8～2.5mg/ (mgTOC), the pH value is controlled at 5～11 scope, and the flow rate control of water is between 2～18cm/s.Will the water after ferrate oxidation is handled input to hydrogen peroxide and add pond 5, carry out class-Fenton oxide treatment by in water, adding hydrogen peroxide 4, regulate the dosage of hydrogen peroxide according to different quality, be generally 0.5-2.0mg/L, water is 30～60min in the residence time that hydrogen peroxide adds the pond, the pH value is controlled at 3～7 scope, and the flow rate control of water is between 5～20cm/s.To input to settling tank 6, carry out solid-liquid separation through ferrate and class-Fenton coupling treated water.To input to biological activated carbon filter 7 through the water after ferrate and the class-Fenton coupling oxide treatment, and carry out a biological disposal upon under the effect of oxygen 8, and improve the biodegradability for the treatment of water, 9 for handling the back discharge water.
Water 1 inputs to ferrate and adds pond 3 after will filtering, carry out the ferrate oxidation processing by in treating water, adding ferrate medicament 2, water is 5～30min in the residence time that ferrate adds the pond, ferrate throwing amount is 0.8～2.5mg/ (mgTOC), the pH value is controlled at 5～11 scope, and the flow rate control of water is between 2～18cm/s.Will the water after ferrate oxidation is handled input to hydrogen peroxide and add pond 5, carry out class-Fenton oxide treatment by in water, adding hydrogen peroxide 4, the dosage of hydrogen peroxide is generally 0.5-2.0mg/L, water is 30～60min in the residence time that hydrogen peroxide adds the pond, the pH value is controlled at 3～7 scope, and the flow rate control of water is between 5～20cm/s.To input to settling tank 6 through ferrate and class-Fenton coupling treated water, and carry out solid-liquid separation, 7 for handling the back discharge water.
Claims (4)
1. the water treatment method of a ferrate and class-Fenton coupling comprises the steps:
Ferrate oxidation step: in pending water, drop into the ferrate medicament, the reaction certain hour;
Class-Fenton process oxidation step: add hydrogen peroxide in the water after ferrate is handled, quick stirring back commentaries on classics is stirred to reaction at a slow speed and finishes;
Precipitate and separate step:, carry out solid-liquid separation with above-mentioned reaction solution precipitation certain hour.
2. the water treatment method of a kind of ferrate according to claim 1 and class-Fenton coupling is characterized in that: add hydrogen peroxide in the water body after ferrate is handled, make the Fe in the solution
3+Or Fe (OH)
3Constitute homogeneous phase or multiphase-fenton-Fenton system with the hydrogen peroxide that adds.
3. the water treatment method of a kind of ferrate according to claim 1 and class-Fenton coupling is characterized in that: this method has not only made full use of the by product (Fe in the conventional ferrate oxidation process
3+Or Fe (OH)
3), and because class-Fenton process has produced the hydroxyl radical free radical (OH) with extremely strong oxidation susceptibility.
4. the water treatment method of a kind of ferrate according to claim 1 and class-Fenton coupling is characterized in that: the precipitation in the precipitate and separate step is to adopt the settling tank precipitation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610061047 CN101088926A (en) | 2006-06-12 | 2006-06-12 | Combined water-treating farrate-fenton reagent process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610061047 CN101088926A (en) | 2006-06-12 | 2006-06-12 | Combined water-treating farrate-fenton reagent process |
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| CN101088926A true CN101088926A (en) | 2007-12-19 |
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| CN 200610061047 Pending CN101088926A (en) | 2006-06-12 | 2006-06-12 | Combined water-treating farrate-fenton reagent process |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101954105A (en) * | 2010-09-16 | 2011-01-26 | 宁波工程学院 | Method for removing odor of feces and urine of animals and poultry through oxidation |
| CN101486518B (en) * | 2009-02-27 | 2011-06-15 | 哈尔滨工业大学 | Fenton-like-fluidized bed sewage processor and sewerage treating method therefor |
| CN103755065A (en) * | 2013-12-31 | 2014-04-30 | 浙江大学 | Method for reducing COD (Chemical Oxygen Demand) of tebuconazole industrial wastewater |
| CN105329949A (en) * | 2015-11-16 | 2016-02-17 | 哈尔滨工业大学 | Method for in-situ preparation of ferrate by means of singlet oxygen |
| CN108314208A (en) * | 2018-02-01 | 2018-07-24 | 太原理工大学 | A method of utilizing Fe (VI)/Fenton systems oxidizing, flocculating coking wastewater China and Philippines and coal particle object |
| WO2020133892A1 (en) * | 2018-12-25 | 2020-07-02 | 同济大学 | Method for controlling pipe corrosion and odor |
| CN111661911A (en) * | 2020-06-01 | 2020-09-15 | 五邑大学 | Method for removing organic pollutants in water |
| CN113429058A (en) * | 2021-07-07 | 2021-09-24 | 重庆工商大学 | Method for treating dye wastewater by using potassium ferrate and dielectric barrier discharge plasma |
-
2006
- 2006-06-12 CN CN 200610061047 patent/CN101088926A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101486518B (en) * | 2009-02-27 | 2011-06-15 | 哈尔滨工业大学 | Fenton-like-fluidized bed sewage processor and sewerage treating method therefor |
| CN101954105A (en) * | 2010-09-16 | 2011-01-26 | 宁波工程学院 | Method for removing odor of feces and urine of animals and poultry through oxidation |
| CN103755065A (en) * | 2013-12-31 | 2014-04-30 | 浙江大学 | Method for reducing COD (Chemical Oxygen Demand) of tebuconazole industrial wastewater |
| CN103755065B (en) * | 2013-12-31 | 2015-06-17 | 浙江大学 | Method for reducing COD (Chemical Oxygen Demand) of tebuconazole industrial wastewater |
| CN105329949A (en) * | 2015-11-16 | 2016-02-17 | 哈尔滨工业大学 | Method for in-situ preparation of ferrate by means of singlet oxygen |
| CN105329949B (en) * | 2015-11-16 | 2017-01-25 | 哈尔滨工业大学 | Method for in-situ preparation of ferrate by means of singlet oxygen |
| CN108314208A (en) * | 2018-02-01 | 2018-07-24 | 太原理工大学 | A method of utilizing Fe (VI)/Fenton systems oxidizing, flocculating coking wastewater China and Philippines and coal particle object |
| CN108314208B (en) * | 2018-02-01 | 2021-10-01 | 太原理工大学 | Method for oxidizing and flocculating phenanthrene and coal particles in coking wastewater by using Fe (VI)/Fenton system |
| WO2020133892A1 (en) * | 2018-12-25 | 2020-07-02 | 同济大学 | Method for controlling pipe corrosion and odor |
| CN111661911A (en) * | 2020-06-01 | 2020-09-15 | 五邑大学 | Method for removing organic pollutants in water |
| CN113429058A (en) * | 2021-07-07 | 2021-09-24 | 重庆工商大学 | Method for treating dye wastewater by using potassium ferrate and dielectric barrier discharge plasma |
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Open date: 20071219 |