CN104743654A - Method for efficient treatment of organic wastewater by virtue of pre-magnetized FeO/H2O2 system - Google Patents
Method for efficient treatment of organic wastewater by virtue of pre-magnetized FeO/H2O2 system Download PDFInfo
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- CN104743654A CN104743654A CN201510181179.XA CN201510181179A CN104743654A CN 104743654 A CN104743654 A CN 104743654A CN 201510181179 A CN201510181179 A CN 201510181179A CN 104743654 A CN104743654 A CN 104743654A
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Abstract
The invention belongs to the technical field of wastewater treatment, and relates to a method for efficient treatment of organic wastewater by virtue of a pre-magnetized FeO/H2O2 system. The method comprises the following steps: magnetizing 0.5-3mmol of FeO in a system which is 10-70mT in magnetic field intensity for 0.5-5min so as to obtain pre-magnetized FeO, regulating the pH value of to-be-processed organic wastewater to be less than 6.5 and simultaneously adding the pre-magnetized FeO and 0.25-5mmol of H2O2 so as to obtain a pre-magnetized FeO/H2O2 Fenton-like system for treating organic pollutants. The method, by virtue of the magnetic memory effect of the pre-magnetized FeO, can accelerate the generation of Fe<2+> and can react with H2O2 to generate the hydroxyl radical so as to promote the degradation of the pollutants. The prominent features of the method are that treatment rate is higher than that of a conventional FeO/H2O2 system, pH application scope is wider, an original treatment device can not be reformed for the treatment of wastewater, and the method is easy in popularization.
Description
Technical field
The invention belongs to field of environment engineering technology, relate to the novel method of the treatment of Organic Wastewater such as a kind of dyestuff.
Background technology
The organic waste waters such as pharmacy, chemical industry, printing and dyeing are usually containing a large amount of Persistent organic pollutants and complicated component, ordinary method process is difficult to obtain promising result, and the high-level oxidation technology utilizing the very strong hydroxyl radical free radical of oxidisability to remove pollutent shows good application prospect.
High-level oxidation technology mainly comprises: photochemical oxidation method, wet oxidation process, sonochemical oxidation, Ozonation, electrochemical oxidation process and Fenton oxidation method.Wherein Fenton oxidation method utilizes Fe
2+and H
2o
2there is the hydroxyl radical free radical that Fenton's reaction generates, be a kind of simple efficient, applicable object high-level oxidation technology widely, obtain and apply significantly.But still there is the problems such as pH narrow application range, iron catalyst easily run off.
For this reason, heterogeneous iron catalyst is adopted to replace Fe
2+fenton process day by day cause the attention of investigator, also have more development potentiality.Wherein, Fe
0/ H
2o
2fenton-like is because of Zero-valent Iron (Fe
0) be cheap and easy to get, get most of the attention without cytotoxic activity is high.For overcoming due to Fe
0dissolution rate is low, applicable pH range is narrow (being less than 3) and limit Fe
0/ H
2o
2the problem of processing efficiency, has research to adopt nanometer Fe
0replace Fe
0, but nanometer Fe
0higher and the stability of cost still has much room for improvement; Also research and propose low-intensity magnetic field and improve Fe
0/ H
2o
2, but the layout of this system low-intensity magnetic field is comparatively difficult, needs to do larger improvement to original water processing establishment.Therefore the strengthening Fe of simple high efficiency, low cost is urgently developed
0/ H
2o
2fenton-like.
Summary of the invention
The object of the invention is for overcoming above-mentioned technological deficiency, by Fe
0pre-magnetizati on, utilize its Magnetic memory effect, develop premagnetization Fe
0/ H
2o
2class Fenton method, while lifting treatment of Organic Wastewater effect, expands its scope of application to pH, has good application prospect.
Technical scheme of the present invention is as follows:
1, by the Fe of 0.5-3mmol
0be form premagnetization Fe after magnetizing 0.5-5min in the magnetic field of 10-70mT in magneticstrength
0.
2, pending organic waste water pH is adjusted to less than 6.5, by the Fe of premagnetization
0with 0.25-5mmol H
2o
2add simultaneously, form premagnetization Fe
0/ H
2o
2fenton-like process organic pollutant.
The present invention has following outstanding feature and beneficial effect:
(1) the more conventional Fe of the method
0/ H
2o
2system process organic waste water is more efficient, and organic pollutant removal speed promotes 2-7 doubly.
(2) the more conventional Fe of the method
0/ H
2o
2system has the wider pH scope of application, all has good treatment effect when pH < 6.5.
(3) Fe of premagnetization
0preparation is economical convenient, and process waste water is without the need to transforming original treatment unit, and cost is low, easily promote.
Accompanying drawing explanation
Fig. 1 is premagnetization Fe
0/ H
2o
2with conventional Fe
0/ H
2o
2system contrasts Tartrazol yellow degradation effect.
Fig. 2 is premagnetization Fe
0/ H
2o
2with conventional Fe
0/ H
2o
2system removes contrast to Tartrazol yellow TOC.
Embodiment
Further illustrate the present invention by reference to the accompanying drawings by the following examples.
Embodiment 1
By the Fe of 2mmol
0be form premagnetization Fe after magnetizing 2min in the magnetic field of 30mT in magneticstrength
0; The Tartrazol yellow wastewater pH of pending 200mg/L is adjusted to 4, by the Fe of premagnetization
0with 0.5mmol H
2o
2add simultaneously, form premagnetization Fe
0/ H
2o
2fenton-like process organic pollutant.
Meanwhile, conventional Fe is compared
0/ H
2o
2system treatment effect under the same conditions.As shown in Figure 1, premagnetization Fe
0/ H
2o
2fenton-like substantially increases the degradation rate of Tartrazol yellow, shortens the reaction times.At premagnetization Fe
0/ H
2o
2in Fenton-like, Tartrazol yellow just can be degraded 90% by 30min, and at Fe
0/ H
2o
2in system, 3h can only degrade the Tartrazol yellow of 78%.Fig. 2 then compared for two systems to Tartrazol yellow TOC removal effect.Fe
0/ H
2o
2system is not high to the clearance of TOC, and after reaction 3h, clearance only has 17.4%, and at premagnetization Fe
0/ H
2o
2in system, the clearance of reaction 30min TOC just can reach 26.1%.
Claims (1)
1. a premagnetization Fe
0/ H
2o
2system efficiently processes organic waste water method, it is characterized in that:
(1) by the Fe of 0.5-3mmol
0be form premagnetization Fe after magnetizing 0.5-5min in the magnetic field of 10-70mT in magneticstrength
0.
(2) pending organic waste water pH is adjusted to less than 6.5, by the Fe of premagnetization
0with 0.25-5mmol H
2o
2add simultaneously, form premagnetization Fe
0/ H
2o
2fenton-like process organic pollutant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510181179.XA CN104743654A (en) | 2015-04-17 | 2015-04-17 | Method for efficient treatment of organic wastewater by virtue of pre-magnetized FeO/H2O2 system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510181179.XA CN104743654A (en) | 2015-04-17 | 2015-04-17 | Method for efficient treatment of organic wastewater by virtue of pre-magnetized FeO/H2O2 system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104743654A true CN104743654A (en) | 2015-07-01 |
Family
ID=53584025
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510181179.XA Pending CN104743654A (en) | 2015-04-17 | 2015-04-17 | Method for efficient treatment of organic wastewater by virtue of pre-magnetized FeO/H2O2 system |
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| CN (1) | CN104743654A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105217909A (en) * | 2015-10-29 | 2016-01-06 | 南京大学 | The method of prussiate in ultrasonic wave added Zero-valent Iron, hydrogen peroxide degraded mud |
| CN111470671A (en) * | 2020-04-16 | 2020-07-31 | 山东省科学院激光研究所 | Method for treating arsenic-containing organic wastewater |
| CN111924940A (en) * | 2020-08-07 | 2020-11-13 | 河北工业大学 | Induction electrode and method for degrading pollutants in electromagnetic coupling field |
| CN113231083A (en) * | 2021-02-04 | 2021-08-10 | 南开沧州渤海新区绿色化工研究有限公司 | Catalyst for heterogeneous electro-Fenton organic wastewater treatment process |
| CN115779903A (en) * | 2022-12-06 | 2023-03-14 | 南京环保产业创新中心有限公司 | Fenton reaction catalyst for industrial sewage treatment and preparation method and application thereof |
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2015
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| JP2003080198A (en) * | 2001-09-11 | 2003-03-18 | Kubota Corp | Waste disposal method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105217909A (en) * | 2015-10-29 | 2016-01-06 | 南京大学 | The method of prussiate in ultrasonic wave added Zero-valent Iron, hydrogen peroxide degraded mud |
| CN105217909B (en) * | 2015-10-29 | 2017-10-20 | 南京大学 | The method of cyanide in ultrasonic wave added Zero-valent Iron, hydrogen peroxide degraded mud |
| CN111470671A (en) * | 2020-04-16 | 2020-07-31 | 山东省科学院激光研究所 | Method for treating arsenic-containing organic wastewater |
| CN111470671B (en) * | 2020-04-16 | 2022-05-13 | 山东省科学院激光研究所 | Method for treating arsenic-containing organic wastewater |
| CN111924940A (en) * | 2020-08-07 | 2020-11-13 | 河北工业大学 | Induction electrode and method for degrading pollutants in electromagnetic coupling field |
| CN111924940B (en) * | 2020-08-07 | 2021-03-05 | 河北工业大学 | Induction electrode and method for degrading pollutants in electromagnetic coupling field |
| CN113231083A (en) * | 2021-02-04 | 2021-08-10 | 南开沧州渤海新区绿色化工研究有限公司 | Catalyst for heterogeneous electro-Fenton organic wastewater treatment process |
| CN115779903A (en) * | 2022-12-06 | 2023-03-14 | 南京环保产业创新中心有限公司 | Fenton reaction catalyst for industrial sewage treatment and preparation method and application thereof |
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Application publication date: 20150701 |
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