CN105036260A - Electro-Fenton high-efficiency continuous-flow filtration type treating method for organic waste water - Google Patents
Electro-Fenton high-efficiency continuous-flow filtration type treating method for organic waste water Download PDFInfo
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- CN105036260A CN105036260A CN201510394119.6A CN201510394119A CN105036260A CN 105036260 A CN105036260 A CN 105036260A CN 201510394119 A CN201510394119 A CN 201510394119A CN 105036260 A CN105036260 A CN 105036260A
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Abstract
The invention relates to an Electro-Fenton high-efficiency continuous-flow filtration type treating method for organic waste water. According to the method, a metal oxide electrode is used as a positive pole, a high-efficiency hydrogen peroxide-producing electrode is used as a negative pole, and the distance between the two poles is 1 to 10 mm; after pH value regulation, ferrous sulphate is added into the organic waste water, the obtained mixture is pumped into the negative pole of a reactor, and air is introduced into the negative pole at the same time; and then a reaction is carried out with current controlled, and the organic waste water flows out from the positive pole, thereby realizing purifying of the organic waste water. According to the invention, in virtue of anodization effect of high-oxygen-evolution metal oxide and high-efficiency Electro-Fenton effect of the negative pole, high-efficiency removal of organic pollutants and immediate purification of waste water upon discharging are realized; and the method has the characteristics of good treating effect, low energy consumption, stable operation, etc. and is applicable to high-efficiency low-consumption of organic waste water of dyes and the like.
Description
Technical field
The invention belongs to field of environment engineering technology, relate to the method that a kind of Continuous Flow filtration type electricity Fenton efficiently processes organic pollutant.
Background technology
Fenton oxidation is as a kind of high-level oxidation technology, because its strong oxidizing property and environment friendly are used widely in actual waste water process.Fenton oxidation is by additional H
2o
2and catalyst Fe
2+the hydroxyl radical free radical producing Strong oxdiative ability carrys out degradation of contaminant, but due to H
2o
2there is the condition restrictions such as storage, transportation safety, the technology that this original position of electric Fenton produces hydrogen peroxide is arisen at the historic moment.Its reaction mechanism is that oxygen molecule, at cathode surface, two electron reduction process occurs, and reacts as follows:
O
2+2H
++2e
-→H
2O
2
Current most of electric Fenton study limitation is in intermittent flow system, and wastewater treatment capacity is little and energy consumption is higher, affects its practical application.Continuous Flow electricity Fenton-like system can solve the problem to a certain extent, but at present Continuous Flow electricity Fenton-like system exists hydrogen peroxide and yields poorly or can not give full play to the feature that anode and cathode filters simultaneously, thus does not reach the efficient removal of organic pollutant.Therefore, a kind of efficient filtration type electricity Fenton system for handling is developed, by efficiently producing H
2o
2negative electrode development promotes electric Fenton treatment effect, and realizes out Water warfare by filtration type Continuous Flow strengthening electrode surface transmittance process, makes its treatment effect obviously will be better than conventional system, has good application prospect undoubtedly.
Summary of the invention
The object of the invention is, by the structure of high-efficiency and continuous stream filtration type electricity Fenton-like system, to develop the method for processing organic wastewater of a kind of high-level efficiency, less energy-consumption.
Process organic pollutant method of the present invention is as follows: take metal oxide electrode as anode, the efficient electrode producing hydrogen peroxide is negative electrode, two interpole gap 1-10mm, organic waste water adds 0.2-2mM ferrous sulfate after regulating pH2-5 and pumps into reactor negative electrode with the flow velocity of 0.1-30mL/min, negative electrode blasts the air of 1-200mL/min simultaneously, after control electric current 1-100mA reacts, flow out from anode and realize cleaning action.
Metal oxide anode can be PbO
2, SnO
2, DSA anode, and negative electrode is the efficient product hydrogen peroxide negative electrode of carbon felt and carbon black thereof, PTFE modification.In this system, by anodizing and the effect of negative electrode efficient electric Fenton of high oxygen separated metal oxide, achieve organic pollutant and efficiently remove and wastewater effluent and clean performance.
The present invention has following outstanding feature and beneficial effect:
(1) the method not only original position efficiently can produce hydrogen peroxide, and has given full play to Continuous Flow filtration type system and can accelerate pollutant removal and realize water outlet and clean advantage.
(2) the method set multiple effect such as electrooxidation, electric Fenton, the organic clearance such as dyestuff can reach 90%, and energy consumption can be low to moderate 20kWh/kgTOC, well below conventional Fenton oxidation energy consumption 80-275kWh/kgTOC.
(3) this system handling property is efficient, stable, and electrode energy Reusability reduces cost of investment.
Accompanying drawing explanation
Fig. 1 is the contrast of Continuous Flow filtration type system vertical current, parallel-flow and Traditional continuous flow system methylene blue removal effect
Fig. 2 is that Continuous Flow filtration type electricity Fenton runs 6 treatment effects continuously
Embodiment
The present invention is described in further detail by reference to the accompanying drawings by following examples.
(1) method treating processes of the present invention
Be anode with DSA mesh electrodes, efficiently produce the carbon felt modified electrode of hydrogen peroxide for negative electrode, two interpole gap 8mm, Methylene blue waste water adds 0.3mM ferrous sulfate after regulating pH3 and pumps into reactor negative electrode with the flow velocity of 7mL/min, negative electrode blasts the air of 50mL/min simultaneously, after control electric current 50mA reacts, flow out from anode and realize cleaning action.
(2) this embodiment obtains effect
This examples comparative filtration type system vertical current, parallel-flow and Traditional continuous flow system to methylene blue removal effect, as shown in Figure 1.Can find that filtration type vertical current system is significantly better than parallel-flow system and Traditional continuous flow system, when electric current is 50mA, when flow velocity is 7ml/min, filtration type vertical current system can keep water outlet methylene blue clearance more than 90%, and stable water outlet, the water outlet of parallel-flow system can only can only maintain about 65% by methylene blue clearance, and Traditional continuous flow system is until 60min just reaches stable water outlet state, and after stable water outlet, methylene blue clearance maintains about 85%.Filtration type vertical current system has the highest TOC clearance equally, and TOC of yielding water clearance can reach 57.9%.
Fig. 2 shows filtration type system vertical fluid and ties up to continuously operation 6 methylene blues and TOC removal situation.After running for 6 times, water outlet methylene blue clearance substantially maintains more than 85%, TOC clearance and maintains about 50%.Stability and the high efficiency of this system are fully demonstrated.
Claims (3)
1. Continuous Flow filtration type electricity Fenton efficiently processes the method for organic waste water.The method feature is as follows: take metal oxide electrode as anode, the efficient electrode producing hydrogen peroxide is negative electrode, two interpole gap 1-10mm, organic waste water adds 0.2-2mM ferrous sulfate after regulating pH2-5 and pumps into reactor negative electrode with the flow velocity of 0.1-30mL/min, negative electrode blasts the air of 1-200mL/min simultaneously, after control electric current 1-100mA reacts, flow out from anode and realize cleaning action.
2. method according to claim 1, is characterized in that described metal oxide anode is mesh PbO
2, SnO
2, DSA anode.
3. method according to claim 1, is characterized in that described negative electrode is the efficient product hydrogen peroxide negative electrode of carbon felt and carbon black thereof, PTFE modification.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510394119.6A CN105036260A (en) | 2015-07-02 | 2015-07-02 | Electro-Fenton high-efficiency continuous-flow filtration type treating method for organic waste water |
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| CN201510394119.6A CN105036260A (en) | 2015-07-02 | 2015-07-02 | Electro-Fenton high-efficiency continuous-flow filtration type treating method for organic waste water |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105329991A (en) * | 2015-12-08 | 2016-02-17 | 南开大学 | Novel penetrating type electro-Fenton reactor and method for treating organic wastewater |
| CN105753111A (en) * | 2016-04-05 | 2016-07-13 | 南开大学 | Method for treating organic wastewater by efficient peroxide flocculation technology |
| CN106219684A (en) * | 2016-08-31 | 2016-12-14 | 中国科学院重庆绿色智能技术研究院 | A kind of Fenton reactor processing organic wastewater and reaction method |
| CN107445256A (en) * | 2017-09-08 | 2017-12-08 | 南开大学 | A kind of continuous stream filtering type electrolysis ozone sterilizing method |
| CN112803030A (en) * | 2020-12-29 | 2021-05-14 | 河北工业大学 | Preparation method and application method of electro-Fenton composite membrane cathode |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105329991A (en) * | 2015-12-08 | 2016-02-17 | 南开大学 | Novel penetrating type electro-Fenton reactor and method for treating organic wastewater |
| CN105753111A (en) * | 2016-04-05 | 2016-07-13 | 南开大学 | Method for treating organic wastewater by efficient peroxide flocculation technology |
| CN106219684A (en) * | 2016-08-31 | 2016-12-14 | 中国科学院重庆绿色智能技术研究院 | A kind of Fenton reactor processing organic wastewater and reaction method |
| CN107445256A (en) * | 2017-09-08 | 2017-12-08 | 南开大学 | A kind of continuous stream filtering type electrolysis ozone sterilizing method |
| CN112803030A (en) * | 2020-12-29 | 2021-05-14 | 河北工业大学 | Preparation method and application method of electro-Fenton composite membrane cathode |
| CN112803030B (en) * | 2020-12-29 | 2022-06-10 | 河北工业大学 | Preparation method and application method of electro-Fenton composite membrane cathode |
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