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Method for carrying out cooperative oxidation treatment on organic wastewater by potassium permanganate and potassium hydrogen persulfate

A technology of potassium hydrogen persulfate and organic wastewater, which is applied in the direction of oxidized water/sewage treatment, etc., to achieve the effects of reduced dosage, good decontamination effect, and stable chemical properties

Inactive Publication Date: 2014-03-26
WUHAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Potassium permanganate oxidation and potassium hydrogen persulfate oxidation are both effective supplements to the existing wastewater oxidation treatment methods, but when these two methods are applied to organic wastewater treatment alone, there are certain deficiencies

Method used

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  • Method for carrying out cooperative oxidation treatment on organic wastewater by potassium permanganate and potassium hydrogen persulfate
  • Method for carrying out cooperative oxidation treatment on organic wastewater by potassium permanganate and potassium hydrogen persulfate
  • Method for carrying out cooperative oxidation treatment on organic wastewater by potassium permanganate and potassium hydrogen persulfate

Examples

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Embodiment 1

[0034] In this example, aniline organic wastewater is the object to be treated, the concentration of aniline is 100 mg / l, the corresponding total organic carbon content is 26.79 mg / L, and the pH of the wastewater is not adjusted. Both potassium permanganate and persulfate are in solution, KMnO 4The concentration of the solution is 0.25 mol / l potassium persulfate double salt (Oxone) and the concentration of the aqueous solution is 198.38 g / l. The experiments were divided into four groups, all of which used Erlenmeyer flasks with glass stoppers as reaction vessels. Experimental group 0 is a blank control without adding oxidant. Experimental group 1 used potassium permanganate alone, added 1.3 ml of 0.25 mol / l potassium permanganate solution to 100 mL of waste water, and reacted for 4 hours; the second group used potassium permanganate alone, added 198.38 1ml of potassium permanganate double salt solution of g / l was reacted for 4h; the third group of experiments combined potass...

Embodiment 2

[0038] In this example, phenol organic wastewater is the object to be treated, the phenol concentration is 100 mg / l, the corresponding total organic carbon content is 40.84 mg / L, and the wastewater is slightly acidic (pH 6). Both potassium permanganate and persulfate are in solution, KMnO 4 The concentration of the solution is 0.25 mol / l potassium persulfate double salt (Oxone) and the concentration of the aqueous solution is 198.38 g / l. The experiments were divided into four groups, all of which used Erlenmeyer flasks with glass stoppers as reaction vessels. Experimental group 0 is a blank control without adding oxidant. Experimental group 1 used potassium permanganate alone, added 2ml of 0.25mol / l potassium permanganate solution to 100mL of wastewater, and reacted for 4 hours; the second group used potassium permanganate alone, added 198.38g of potassium permanganate to 100mL of wastewater 1.55ml of potassium permanganate double salt solution per liter, reacted for 4h; the...

Embodiment 3

[0043] In this example, β-naphthol organic wastewater is the object to be treated, the concentration of naphthol is 100 mg / l, the corresponding total organic carbon content is 137.7 mg / L, and the pH of the wastewater is 8. Both potassium permanganate and persulfate are in solution, KMnO 4 The concentration of the solution is 0.25 mol / l potassium persulfate double salt (Oxone) and the concentration of the aqueous solution is 198.38 g / l. The experiments were divided into four groups, all of which used Erlenmeyer flasks with glass stoppers as reaction vessels. Experimental group 0 is a blank control without adding oxidant. Experimental group 1 used potassium permanganate alone, added 2ml of 0.25mol / l potassium permanganate solution to 100mL of wastewater, and reacted for 4 hours; the second group used potassium permanganate alone, added 198.38g of potassium permanganate to 100mL of wastewater 1.55ml perl potassium hydrogen persulfate double salt solution, reacted for 4h; the th...

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Abstract

The invention provides a method for carrying out cooperative oxidation treatment on organic wastewater by potassium permanganate and potassium hydrogen persulfate. According to the treatment method, the treatment efficiency of the wastewater is improved and the dosage of an oxidant is reduced. The method comprises the following steps: (1) selecting the organic wastewater with the pH (Potential of Hydrogen) which is less than or equal to 10 or adjusting the pH of the organic wastewater to be less than or equal to 10, wherein organic matters in the organic wastewater contain unsaturated bonds; and (2) adding the potassium permanganate and the potassium hydrogen persulfate into the organic wastewater to be treated at the same time; or within half an hour after adding the potassium permanganate into the organic wastewater, adding the potassium hydrogen persulfate and agitating to react for 1-4 hours. According to the method, a catalyst does not need to be added in the reaction process and a byproduct obtained by the reaction of the potassium permanganate can be used as a catalyst for stimulating the oxidization performance of hydrogen persulfate; the dosage of medicaments is saved, the cost is saved and an operation process is simplified. The method provided by the invention is simple in process operation and good in pollution cleaning effects and has good treatment effects on various types of organic wastewater, particularly phenols and anilines wastewater.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and relates to a method for co-oxidizing organic waste water with potassium permanganate and potassium hydrogen persulfate. Background technique [0002] The rapid development of the national economy and the discharge of "three wastes" in the production and living process have caused serious soil and groundwater pollution. Water and soil pollution poses a serious threat to human health, social and economic development, and the ecological environment. Water pollution control is one of the hot issues of current social concern. Chemical oxidation technology can oxidize and treat organic pollutants in wastewater, and is one of the main treatment technologies for organic wastewater. The oxidants used in chemical oxidation technology mainly include chlorine gas, chlorine dioxide, ozone, Fenton’s reagent, and potassium permanganate. Compared with other oxidants, potassium permanganate i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72
Inventor 毛旭辉高顺李东洋刘甜甜张海林
Owner WUHAN UNIV
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