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Method for catalytic oxidation treatment of anisole waste water

A technology of catalytic oxidation and heterogeneous catalytic oxidation, which is applied in the fields of oxidized water/sewage treatment, chemical instruments and methods, chemical/physical processes, etc. simple effect

Inactive Publication Date: 2005-12-21
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the chemical wastewater produced by some chemical companies in the production process contains anisole, trichloromethoxybenzene, trifluoromethoxybenzene, p-nitrotrifluoromethoxybenzene, p-aminotrifluoromethoxybenzene etc., the composition is complex, and conventional methods are difficult to handle

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Treatment effect of chlorine dioxide p-anisole wastewater

[0022] Only use chlorine dioxide to treat anisole wastewater.

[0023] It is carried out in a reactor made of PVC, the treated water volume is 600ml, and air is passed in to skip it. COD Cr The analysis is carried out using the dichromate method (GB 11914-89) for the determination of chemical oxygen demand of water quality, the same as below.

[0024] After the raw water is processed by flocculation, COD Cr :5005mg / L, pH: 4-5, the treatment results are shown in Table 1.

[0025] Reaction time

Embodiment 2

[0027] M / Al 2 O 3 Preparation of catalyst:

[0028] Take 0.18mol / L Fe(NO 3 ) 3 100ml solution, 100g of 40~60 mesh Al 2 O 3 The particles were poured into the impregnation solution and stirred, placed for 10 hours, dried at 110°C for 2 hours, then calcined at 350°C for 3 hours, and naturally cooled to room temperature to prepare catalyst A. The weight of the metal components in the catalyst A is: Fe: 1%, the rest is the carrier Al 2 O 3 .

Embodiment 3

[0030] Treatment effect of catalyst A on anisole wastewater

[0031] The reaction is carried out in a reactor made of PVC, the treated water volume is 600ml, and air is passed through it. 100ml of catalyst A prepared according to Example 2 was charged.

[0032] After the raw water is processed by flocculation, COD Cr :5005mg / L, pH: 4-5, the treatment results are shown in Table 2.

[0033] Reaction time

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PUM

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Abstract

The invention relates to industrial waste water treatment, in particular to a chlorine dioxide-electroheterogeneous catalytic oxidation method for treating anisole waste water. Firstly, anisole is subjected to chlorine dioxide catalytic oxidation treatment, and in the presence of a catalyst, it is treated for 10 to 60 minutes to remove most of the organic matter; after the chlorine dioxide catalytic oxidation treatment, in the presence of a catalyst, the electro-multiphase Catalytic oxidation treatment, in the electric field, the DC voltage between the electrodes is 5-15V, and the current density is 200mA-400mA per square decimeter under the external electric field, so that the organic pollutants in the anisole wastewater are catalyzed and oxidized on the surface of the catalyst. The experimental results show that the combined technology can directly meet the discharge standard for the treatment of anisole wastewater, and the operating cost is low.

Description

Technical field [0001] The invention relates to industrial wastewater treatment, in particular to a method for treating anisole wastewater by chlorine dioxide-electric heterogeneous catalytic oxidation. Background technique [0002] At present, the chemical wastewater produced by some chemical companies in the production process contains anisole, trichloromethoxybenzene, trifluoromethoxybenzene, p-nitrotrifluoromethoxybenzene, and p-aminotrifluoromethoxybenzene. Etc., the ingredients are complex and difficult to handle with conventional methods. [0003] As a strong oxidant, chlorine dioxide has a wide range of application prospects in drinking water disinfection, and has become the most ideal replacement product among the internationally recognized chlorine series disinfectants. (New water treatment agent-chlorine dioxide technology and its application, Huang Junli, Chemical Industry Press, May 2002). [0004] Due to its strong oxidizing property and long-lasting oxidizing abili...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J21/06B01J23/745B01J23/755C02F1/467C02F1/76
Inventor 杨旭孙承林蔡钊荣王全义
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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