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Method for treating organic wastewater by use of ferric oxychloride to catalyze and activate mono-persulfate

A ferric oxychloride and persulfate technology, which is applied in oxidation water/sewage treatment, chemical instruments and methods, water/sewage treatment, etc., to achieve the effects of decay time of 4s, high degradation efficiency and cost saving

Active Publication Date: 2017-03-22
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

co 2+ The activated persulfate system has the advantages of strong oxidizing ability, fast reaction, high mineralization efficiency, unaffected reaction, strong resistance to inorganic salts such as carbonate and chloride, etc., but Co 2+ The toxicity still limits the wide application of the system

Method used

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  • Method for treating organic wastewater by use of ferric oxychloride to catalyze and activate mono-persulfate
  • Method for treating organic wastewater by use of ferric oxychloride to catalyze and activate mono-persulfate
  • Method for treating organic wastewater by use of ferric oxychloride to catalyze and activate mono-persulfate

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preparation example Construction

[0046] The preparation method of the FeOCl catalyst includes a partial thermal decomposition method and a chemical vapor phase migration method. During the thermal decomposition process of the partial thermal decomposition method, the formation of oxychlorides and the formation of hydroxides, oxyhydroxides, etc. exist Competition, by precisely controlling the thermal decomposition temperature, atmosphere and heating rate of ferric chloride, etc., the decomposition, hydroxylation, phase transition, crystallization and other processes of the precursor salt can be controlled. FeOCl can be prepared using anhydrous ferric chloride as a precursor, and it is generally believed that the mechanism is hydrated FeCl 3 with anhydrous FeCl 3 The reaction, through the elimination of hydrogen chloride and structural rearrangement, finally forms FeOCl.

[0047] In a specific embodiment, anhydrous ferric chloride can be ground in an agate mortar for half an hour in an environment with an air ...

Embodiment 1

[0050] Such as figure 1 As shown, embodiment 1 of the present invention utilizes oxyferric chloride to catalyze the method for activating monopersulfate to treat organic wastewater, comprising the following steps:

[0051] Step S101: Add organic pollutant RhB solution, ultrapure water and catalyst FeOCl to the reaction vessel, and vibrate in a constant temperature water bath shaker for 30 minutes to obtain a mixture;

[0052] Step S102: adding monopersulfate KHSO in the mixture 5 solution, the monopersulfate is catalyzed and activated by oxyferric chloride to generate sulfate radicals to degrade organic wastewater;

[0053] The organic pollutant in the organic wastewater is Rhodamine B;

[0054] In order to obtain the effect of the method for utilizing oxyferric chloride to catalyze the activation of monopersulfate to treat organic waste water in the embodiment of the present invention, the following series of experiments are carried out to prove that Example 1:

[0055] Ex...

Embodiment 2

[0066] Such as figure 1 As shown, the embodiment of the present invention 2 utilizes oxyferric chloride catalytic activation monopersulfate to treat the method for organic waste water, comprises the steps:

[0067] Step S201: Add a solution containing organic pollutants, ultrapure water and catalyst FeOCl into the reaction vessel, and vibrate for a period of time in a constant temperature water bath shaker to obtain the mixture;

[0068] Step S202: adding monopersulfate NaHSO in the mixture 5 solution, the monopersulfate is catalyzed and activated by oxyferric chloride to generate sulfate radicals to degrade organic wastewater;

[0069] The organic pollutant in the organic wastewater is reactive brilliant red;

[0070] In order to obtain the effect of the method for utilizing oxyferric chloride to catalyze the activation of monopersulfate to treat organic waste water in the embodiment of the present invention, the following series of experiments are carried out to prove it i...

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Abstract

The invention provides a method for treating organic wastewater by use of ferric oxychloride to catalyze and activate mono-persulfate. The method comprises the following steps: adding ferric oxychloride FeOCl in the organic wastewater, carrying out adsorption reaction to obtain a mixture; and adding mono-persulfate in the mixture, wherein the mono-persulfate is catalyzed and activated by ferric oxychloride to produce free sulfate radical so as to degrade the organic wastewater. Mono-persulfate is used as an oxidizing agent, and a ferric oxychloride catalyst is used for catalyzing and activating mono-persulfate, and then treating the organic wastewater, the effect of degrading the pollutants in the organic wastewater is obvious, the defects that the hydroxyl free radical has high environment requirement and needs to oxidize the pollutants under the acidic condition in the prior art are solved. The organic pollutant degradation efficiency of the method disclosed by the invention in the wastewater is high under the acidic condition, the neutral condition and the alkaline condition.

Description

technical field [0001] The invention belongs to the field of waste water treatment, and in particular relates to a method for treating organic waste water by using oxyferric chloride to catalyze and activate monopersulfate. Background technique [0002] With the rapid development of the economy and the continuous progress of the society, the ecological environment on which human beings rely is increasingly seriously polluted and destroyed. A large number of toxic, harmful and refractory pollutants (such as dyes, pesticides, herbicides, antibiotics, preservatives, detergents, insecticides, disinfectants, etc.) enter the environmental system, causing serious pollution to water bodies. According to the China Environmental Quality Announcement issued by the national environmental protection department, 436 rivers have been polluted to varying degrees, accounting for 82% of the total surveyed. As of 2011, all major rivers in the country have been polluted to varying degrees, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72C02F1/28
CPCC02F1/281C02F1/725
Inventor 李东亚夏东升徐海明袁向娟曹刚孙磊陈梦蝶
Owner WUHAN TEXTILE UNIV
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