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Visible light synergistic feocl catalytic activation method of monopersulfate treatment of organic wastewater

A technology of persulfate and organic wastewater, applied in chemical instruments and methods, light water/sewage treatment, oxidized water/sewage treatment, etc., to achieve the effects of good stability, decay time of 4s, and long life.

Active Publication Date: 2019-07-23
廊坊首益圆合环保设备有限公司
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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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  • Visible light synergistic feocl catalytic activation method of monopersulfate treatment of organic wastewater
  • Visible light synergistic feocl catalytic activation method of monopersulfate treatment of organic wastewater
  • Visible light synergistic feocl catalytic activation method of monopersulfate treatment of organic wastewater

Examples

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preparation example Construction

[0049] 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.

[0050] In a specific embodiment, 3g of anhydrous ferric chloride can be placed in a glass mortar, ground in air (humidity less than 40%) to...

Embodiment 1

[0054] like figure 1 and 2 As shown, the method for treating organic wastewater with visible light synergistically with FeOCl catalytically activating monopersulfate in Example 1 of the present invention comprises the following steps:

[0055] Step S101: adding ferric oxychloride FeOCl to the organic wastewater, and stirring to form a mixture;

[0056] Step S102: setting an LED lamp of a visible light generating device; placing the container containing the mixture within the irradiation range of the LED lamp of the visible light generating device;

[0057] Step S103: adding monopersulfate KHSO to the mixture 5 .

[0058] Step S104: Turn on the LED light of the visible light generating device and use FeOCl as catalyst to activate the monopersulfate KHSO 5 Produce sulfate radicals to degrade organic wastewater.

[0059] The organic pollutant in described organic waste water is rhodamine B; The preparation process of described organic waste water is as follows:

[0060] Wei...

Embodiment 2

[0070] like figure 1 and 2 As shown, the method for treating organic wastewater with visible light synergistically with FeOCl catalytically activating monopersulfate in Example 2 of the present invention comprises the following steps:

[0071] Step S201: adding ferric oxychloride FeOCl to the organic wastewater, and stirring to form a mixture;

[0072] Step S202: setting an LED lamp of a visible light generating device; placing the container containing the mixture within the irradiation range of the LED lamp of the visible light generating device;

[0073] Step S203: adding monopersulfate NaHSO to the mixture 5 .

[0074] Step S204: Turn on the LED light of the visible light generating device and use FeOCl as catalyst to activate the monopersulfate NaHSO 5 Produce sulfate radicals to degrade organic wastewater.

[0075] The organic pollutant in the organic wastewater is reactive brilliant red; the preparation process of the organic wastewater is similar to Example 1.

[...

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Abstract

The invention provides a method for treating organic wastewater by utilizing synergy of visible light and FeOCl to conduct catalyzed activation on mono-persulfate. The method comprises the following steps that FeOCl is added to organic wastewater, and stirring is performed to form a mixture; a visible light generating device is arranged; a container containing the mixture is put in an irradiation range of the visible light generating device; the mono-persulfate is added to the mixture, the visible light generating device is opened and cooperates with the FeOCl to conduct catalyzed activation on the mono-persulfate, and free sulfate radicals are produced to degrade the organic wastewater. The mono-persulfate is adopted as an oxidizing agent, the organic wastewater is treated after synergy of visible light and a FeOCl catalyst is utilized to conduct catalyzed activation on the mono-persulfate, the effect of degrading pollutants in the organic wastewater is remarkable, the problem that acidic conditions are needed to oxidize pollutants due to the high environment requirement of hydroxyl free radicals in the prior art is solved, and the method makes the degradation efficiency of organic pollutants in wastewater high under acidic, neutral and alkaline conditions.

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 with visible light and FeOCl catalytically activating 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, an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/72C02F1/30
CPCC02F1/30C02F1/725
Inventor 李东亚夏东升徐海明袁向娟孙磊曹刚陈梦蝶
Owner 廊坊首益圆合环保设备有限公司