Method for treating high-salt organic wastewater by activating peroxymonosulfate with magnetic copper oxide

A technology of organic waste water and monosulfate, which is used in oxidation water/sewage treatment, chemical instruments and methods, special compound water treatment, etc., to achieve the effect of simple synthesis route, good reusability and high catalytic activity

Inactive Publication Date: 2019-08-16
NANKAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Before the present invention, there was no report on the use of magnetic copper oxide materials and persulfate to treat high-salt organic wastewater

Method used

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  • Method for treating high-salt organic wastewater by activating peroxymonosulfate with magnetic copper oxide
  • Method for treating high-salt organic wastewater by activating peroxymonosulfate with magnetic copper oxide
  • Method for treating high-salt organic wastewater by activating peroxymonosulfate with magnetic copper oxide

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Experimental program
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Effect test

Embodiment 1

[0034] Weigh 9.0815g of copper acetate and 1.1577g of nanometer iron ferric oxide and dissolve them in 200mL of deionized water, stir continuously, add 0.1mL of 1-mercaptoglycerol as a dispersant, and ultrasonically 30min to form a uniformly dispersed solution; keep stirring Add 50mL of sodium hydroxide solution (4mol / L) dropwise to the above solution to form a brown suspension, and keep stirring for 1 hour, then leave it to stand for 2 hours to age to form a black solid precipitate; then separate with a permanent magnet, and use After repeated washing with water, ethanol and distilled water, the magnetic copper oxide nanosheets are obtained by drying in an oven not higher than 80°C. For use, add 2 mM peroxymonosulfate to a solution containing 0.1 mM Acid Orange 7 and 0.2 M Na 2 SO 4 In the high-salt dye wastewater, adjust the pH to neutral, then add 0.1g / L magnetic copper oxide material, keep stirring, the degradation rate of Acid Orange 7 reaches 95.81% within 30min, as F...

Embodiment 2

[0036] 2mM persulfate was added to 0.1mM methylene blue, 0.1mM rhodamine B and 0.09mM atrazine high salt (0.2M Na 2 SO 4 ) in organic wastewater, adjust the pH to neutral, then add 0.1g / L magnetic copper oxide material, keep stirring constantly, the degradation rates of methylene blue, rhodamine B and atrazine after 30min are 74.57%, 100% respectively and 100%, such as Figure 5 As shown, the method in the present invention exhibits high efficiency removal ability for various organic pollutants.

Embodiment 3

[0038] Add 2mM persulfate to the high-salt dye wastewater containing 0.1mM Acid Orange 7 and different concentrations of inorganic salts, then add 0.1g / L magnetic copper oxide, keep stirring, Acid Orange 7 within 30min The degradation rate and degradation rate constant are as follows, no matter in single salt or multiple mixed brines, the removal rate of acid orange 7 by the method of the present invention is more than 80%, showing that the method is applicable to the removal of organic matter in various inorganic salt wastewater .

[0039]

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Abstract

The invention discloses a method for treating high-salt organic wastewater by activating peroxymonosulfate with magnetic copper oxide, belonging to the technical field of water pollution control. In this method, a magnetic copper oxide catalyst, which is synthesized simply in one step, is used to activate peroxymonosulfate to produce singlet oxygen with strong oxidizability as the active oxidationspecies, so as to remove refractory organic matter from high-salinity organic wastewater. Compared with the peroxymonosulfate water treatment technology which produces sulfate radical and hydroxyl radical, the singlet oxygen produced by this method is less easily affected by inorganic salts in water, the catalyst activity is stronger, and it is more beneficial to the treatment of saline organic wastewater. The method is applicable to the treatment of various saline organic wastewater, can efficiently remove organic pollutants in a wide pH range, has the simply prepared catalyst, convenient operation, low price and easy magnetic separation, and has great application potential in the field of saline organic wastewater treatment.

Description

technical field [0001] The invention belongs to the technical field of water pollution control, and in particular relates to a method for treating high-salt organic wastewater by using magnetic copper oxide (Mag-CuO) to activate permonosulfate (PMS). Background technique [0002] The discharge of saline wastewater is common in industrial production, such as printing and dyeing, food processing, papermaking, animal husbandry, cleaning and processing industries. Generally speaking, saline wastewater has a salt content of at least 1%, while those with a salt content higher than 3.5% are high-saline wastewater. In addition to high concentrations of inorganic salts such as sodium chloride, sulfate, phosphate, and nitrate, these wastewaters also contain a large amount of refractory organic matter, such as dyes, pesticides, antibiotics, and synthetic complexing agents. As a result, traditional biological treatment technology and physical and chemical treatment technology are facin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72C02F1/48B01J23/745C02F101/30
CPCB01J23/002B01J23/745B01J35/0033C02F1/488C02F1/725C02F2101/30C02F2305/023
Inventor 李振东刘东方黄文力
Owner NANKAI UNIV
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