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A treatment system, treatment method and application of coking phenol cyanide wastewater

A treatment system and treatment method technology, applied in the treatment system of coking cyanide wastewater, using advanced catalytic oxidation technology for advanced treatment of coking phenol cyanide wastewater, can solve the problems of high wastewater treatment cost and weak wastewater treatment capacity, etc. Achieve long service life, strong reliability and differentiability, reduce organic matter and ammonia nitrogen

Active Publication Date: 2021-07-09
北京大学包头创新研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The problem of the prior art that the present invention solves is: Utilize existing device and method to process phenol cyanide wastewater, there are many deficiencies, such as waste water persistent treatment ability is weak, waste water treatment cost is higher etc., phenol cyanide wastewater treatment faces many difficulties

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  • A treatment system, treatment method and application of coking phenol cyanide wastewater
  • A treatment system, treatment method and application of coking phenol cyanide wastewater
  • A treatment system, treatment method and application of coking phenol cyanide wastewater

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Effect test

Embodiment 1

[0063] Embodiment one provides a kind of method that coking phenol cyanide wastewater is carried out advanced treatment, and treatment method is as follows:

[0064] (1) Acidification treatment: Pass 4000mL of phenol cyanide wastewater with COD and ammonia nitrogen contents of 4680mg / L and 29.9mg / L respectively into the acidification tank, and add concentrated sulfuric acid with a mass fraction of 98.3% therein for acidification, and fully stir Afterwards, the pH value of the waste water is 2 to 3;

[0065] (2) Fenton reaction: solution after acidification is passed into Fenton tower, and add ferrous salt and hydrogen peroxide, wherein hydrogen peroxide: coking phenol cyanide waste water=15mL: 1L, ferrous sulfate: coking phenol cyanide waste water=1.5g : 1L, the reaction is carried out under normal pressure, the reaction temperature is 65°C (the raw water inlet temperature after ammonia distillation), and the reaction time is 1.5 hours. After the Fenton reaction occurs, a larg...

Embodiment 2

[0077] Embodiment two provides a kind of method that coking phenol cyanide waste water is carried out advanced treatment, and treatment method is as follows:

[0078] (1) Pass 4000mL COD and ammonia nitrogen content of 6210mg / L and 37.5mg / L phenol cyanide wastewater into the acidification tank, and dropwise add concentrated sulfuric acid with a mass fraction of 98.3% for acidification, and the pH value of the wastewater after fully stirring 2 to 3;

[0079](2) Pass the acidified solution into Fenton tower, and add ferrous salt and hydrogen peroxide, wherein hydrogen peroxide: coking phenol cyanide wastewater=15mL: 1L, ferrous sulfate: coking phenol cyanide wastewater=1.5g: 1L, the reaction Under normal pressure, the reaction temperature is 65 °C, and the reaction time is 1.5 hours. After the Fenton reaction occurs, a large number of hydroxyl radicals are generated in the solution, and some organic substances are oxidized to inorganic substances and organic acids;

[0080] (3)...

Embodiment 3

[0086] Adjust the amount of Fenton reaction agent, calcium oxide and sodium hydroxide after the Fenton reaction in Example 1, replace the flocculant with aluminum sulfate and polyferric sulfate, and replace hydrogen peroxide with heavy weight in the electrochemical catalytic oxidation process simultaneously. Potassium chromate, coking phenol cyanide wastewater for advanced treatment, the specific treatment methods are as follows:

[0087] (1) Pour 4000 mL of phenolic cyanide wastewater with COD and ammonia nitrogen contents of 5328 mg / L and 78.5 mg / L into the acidification tank, and dropwise add concentrated sulfuric acid with a mass fraction of 98.3% in it for acidification. After thorough stirring, the pH value of the wastewater is is 2.5;

[0088] (2) Pass the acidified solution into Fenton tower, and add ferrous salt and hydrogen peroxide, wherein hydrogen peroxide: coking phenol cyanide wastewater=5mL: 1L, ferrous sulfate: coking phenol cyanide wastewater=0.5g: 1L, the re...

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Abstract

The invention relates to the field of industrial wastewater treatment, in particular to a treatment system, treatment method and application of coking phenol cyanide wastewater. The treatment system of coking phenol cyanide wastewater includes a pretreatment unit and an advanced treatment unit in sequence, the pretreatment unit includes a Fenton tower, and the advanced treatment unit includes a plasma generating device and a catalytic oxidation device in sequence. Described treatment system carries out the treatment method of coking phenol cyanide wastewater, comprises pretreatment and advanced treatment successively, comprises the following steps: (1) pretreatment: carry out Fenton reaction treatment to waste water; (2) advanced treatment: will pass through step ( 1) The treated wastewater is subjected to plasma treatment, followed by catalytic oxidation treatment. The invention can effectively reduce the difficult-to-degrade organic matter and ammonia nitrogen in coking phenol-cyanide wastewater, reduce the content of volatile phenol and phenol-cyanide compound, and has the advantages of high cleanliness, simple equipment maintenance, long service life and the like.

Description

technical field [0001] The invention relates to the field of industrial wastewater treatment, in particular to a treatment system, treatment method and application of coking phenol cyanide wastewater, in particular to a novel method for advanced treatment of coking phenol cyanide wastewater using advanced catalytic oxidation technology. Background technique [0002] Coking phenol cyanide wastewater is a kind of industrial wastewater that is difficult to degrade. The composition of wastewater is complex, mainly including phenol, cyanide, ammonia nitrogen, organic salt, aromatic hydrocarbon, organic oil and sulfide, etc., especially phenol and cyanide. Organisms have poisonous or even poisonous effects. If these components are discharged without treatment or improper treatment, they will cause serious pollution to water bodies. Its treatment technology is an international problem. [0003] At present, the methods used to treat coking phenol cyanide wastewater are precipitation...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/06C02F101/18C02F101/30C02F101/34C02F1/46
CPCC02F1/4672C02F1/4674C02F1/52C02F1/5236C02F1/5245C02F1/56C02F1/66C02F1/72C02F1/722C02F1/725C02F9/00C02F2001/007C02F2101/18C02F2101/30C02F2101/345C02F2209/08C02F2305/026
Inventor 李小飞邵乐冲赵功杨明伟宋海燕
Owner 北京大学包头创新研究院
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