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Treatment method of coking wastewater

A technology for coking wastewater and treatment methods, applied in energy wastewater treatment, oxidized water/sewage treatment, chemical instruments and methods, etc., can solve problems such as high operating costs, equipment corrosion, and influence on industrialization promotion, and achieve the effect of improving removal efficiency

Inactive Publication Date: 2013-07-10
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In recent years, advanced oxidation technologies (AOP) such as catalytic wet oxidation and thermal oxidation have been increasingly used in the treatment of refractory biodegradable pollutants. Industrialization promotion

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0021] Waste water is taken from domestic coking production enterprises.

[0022] 1) The water quality is as follows:

[0023] Raw water of coking wastewater: COD4503 mg / L, ammonia nitrogen 4410 mg / L; coking wastewater after deamination: COD3667 mg / L, ammonia nitrogen 673 mg / L; deamination coking wastewater was diluted at a ratio of 1:10, and the measured COD content was 363 mg / L, standby.

[0024] 2) Prepare solid KMnO4 into KMnO4 solution at a concentration of 4000 mg / L and fully dissolve it.

[0025] 3) Using dielectric barrier discharge and KMnO4 synergistic oxidation to treat wastewater:

[0026] Pour 500mL of the diluted chemical wastewater into the reactor, take 2.5mL of the prepared MnO4 solution and put it into the reactor, put the DBD plasma generator in the reactor, connect the electrical treatment system and the aeration system safely, adjust the AC High-frequency high-voltage power supply, so that the voltage applied to the DBD plasma generator is 6.8kV, and t...

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Abstract

The invention discloses a treatment method of coking wastewater, and relates to a wastewater treatment method. The method comprises the following steps of: preparing a KMnO4 solution; carrying out deamination pretreatment on high-concentration coking wastewater; processing the wastewater by dielectric barrier discharge and KMnO4 co-oxidation; putting the coking wastewater to be processed into a reactor; putting the prepared MnO4 solution into the reactor according to the ratio of 20ppm content; putting a dibromodulcitol (DBD) plasma generator into the reactor; connecting an electric treatment system and an aeration system; carrying out organic matter degradation treatment on the cooking wastewater according to the following technologic indexes; and removing polluted organic substances, and removing the chemical oxygen demand (COD) content. The treatment method disclosed by the invention is simple to operate, low in cost, environment-friendly and green; refractory organic pollutants in the wastewater are reduced; the COD content is removed; the COD removal rate of the cooking wastewater is greater than 91% after treatment; and the chroma removal rate achieves over 95%.

Description

technical field [0001] The invention relates to a wastewater treatment method, in particular to a coking wastewater treatment method. Background technique [0002] Coking wastewater is industrial wastewater containing volatile phenols, cyanides, polycyclic aromatic hydrocarbons, and heterocyclic compounds such as oxygen, sulfur, and nitrogen produced during coking and coal gas high-temperature dry distillation, purification, and by-product recovery. It is high in COD and high in phenolic value. , High-concentration organic wastewater with high ammonia nitrogen and difficult biodegradation. Due to its complex composition, conventional physical, chemical, and biological methods are difficult to effectively treat it. According to statistics, in 2012, the total output of coke in my country reached 450 million tons, and the annual output of coking wastewater was close to 300 million tons. If such a large amount of coking wastewater is discharged without effective treatment, it ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/12C02F1/72
CPCY02W10/37
Inventor 刘瑶瑶母继荣曲晓烨王毅
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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