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A method of acid analysis-hydrogen peroxide catalytic oxidation treatment of high-concentration waste emulsion

A waste emulsion, catalytic oxidation technology, applied in the oxidation water/sewage treatment, chemical instruments and methods, water/sewage multi-stage treatment, etc. Simple process, small footprint and high oxidation efficiency

Active Publication Date: 2018-02-06
丁建林 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defects in the prior art that the operation process of waste emulsion is complicated, the processing cost is high, and secondary pollution is easy to occur, thereby providing a kind of waste emulsion with simple operation process, low treatment cost and no secondary pollution. The method of treating high-concentration waste emulsion for secondary pollution

Method used

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  • A method of acid analysis-hydrogen peroxide catalytic oxidation treatment of high-concentration waste emulsion
  • A method of acid analysis-hydrogen peroxide catalytic oxidation treatment of high-concentration waste emulsion
  • A method of acid analysis-hydrogen peroxide catalytic oxidation treatment of high-concentration waste emulsion

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] according to figure 1 The process flow chart of acid analysis-catalyzed oxidation of hydrogen peroxide of the present invention to treat high-concentration waste emulsion, carry out the processing of high-concentration waste emulsion, the method is as follows:

[0028] The waste emulsion comes from a diesel engine manufacturing company

[0029] (1) Before treatment, detect the COD, pH, SS (suspended solids concentration) and oil content of the waste emulsion to be treated. Measure COD with potassium chlorate method; measure pH value with pH test paper, and use glass electrode method for final detection; measure oil content with infrared spectrophotometer; measure SS with infrared spectrophotometer. The test results are shown in Table 1.

[0030] Table 1 COD, pH, SS and oil content in waste emulsion

[0031] project

[0032] (2) adding the mass concentration of 3% of the total mass of the waste emulsion to 30% sulfuric acid in the waste emulsion, stirring fo...

Embodiment 2

[0043] according to figure 1 The process flow chart of acid analysis-catalyzed oxidation of hydrogen peroxide of the present invention to treat high-concentration waste emulsion, carry out the processing of high-concentration waste emulsion, the method is as follows:

[0044] The waste emulsion comes from a diesel engine manufacturing company

[0045] (1) Before treatment, detect the COD, pH, SS (suspended solids concentration) and oil content of the waste emulsion to be treated. Measure COD with potassium chlorate method; measure pH value with pH test paper, and use glass electrode method for final detection; measure oil content with infrared spectrophotometer; measure SS with infrared spectrophotometer. The test results are shown in Table 1.

[0046] Table 1 COD, pH, SS and oil content in waste emulsion

[0047] project

COD

oily

SS

pH

Quantity

120000

4000

800

11

unit

mg / L

mg / L

mg / L

[0048] (2) addin...

Embodiment 3

[0058] according to figure 1 The process flow chart of acid analysis-catalyzed oxidation of hydrogen peroxide of the present invention to treat high-concentration waste emulsion, carry out the processing of high-concentration waste emulsion, the method is as follows:

[0059] The waste emulsion comes from a diesel engine manufacturing company

[0060] (1) Before treatment, detect the COD, pH, SS (suspended solids concentration) and oil content of the waste emulsion to be treated. Measure COD with potassium chlorate method; measure pH value with pH test paper, and use glass electrode method for final detection; measure oil content with infrared spectrophotometer; measure SS with infrared spectrophotometer. The test results are shown in Table 1.

[0061] Table 1 COD, pH, SS and oil content in waste emulsion

[0062] project

COD

oily

SS

pH

Quantity

90000

1100

500

9

unit

mg / L

mg / L

mg / L

[0063] (2) adding ...

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Abstract

The invention discloses a method for acid analysis-hydrogen peroxide catalytic oxidation treatment of high-concentration waste emulsion. The method comprises the following steps: subjecting the waste emulsion to acid analysis pretreatment, and then performing solid-liquid separation, and then performing H2O2 catalytic oxidation treatment on the separated filtrate; the H2O2 catalytic oxidation treatment includes: adding an oxidizing agent H2O2 aqueous solution to the filtrate , H2O2 catalyst, auxiliary phosphoric acid and triethanolamine. After the above-mentioned three-step treatment, the COD value of the wastewater is lower than 500mg / L, and the pH value is 8, which can reach the discharge standard; the process flow is simple, the operation is convenient, the equipment investment is small, and the floor area is small; hydrogen peroxide is used as the oxidant , At the same time, copper ions are used as catalysts, phosphoric acid, triethanolamine, etc. are used as auxiliary agents for high oxidation efficiency, rich sources of raw materials, low cost, and no secondary pollution.

Description

technical field [0001] The invention relates to the technical field of waste emulsion treatment, in particular to a method for treating high-concentration waste emulsion through acid analysis-hydrogen peroxide catalytic oxidation. Background technique [0002] Emulsion is prepared by diluting emulsified oil with water and then adding emulsifier. It is mainly used in metal cutting in machinery manufacturing industry. Due to the different nature and type of cutting, the formulation of emulsion used is different. Including a variety of base oils, different types of surfactants, and many additives with special properties such as anti-rust agents, anti-mold and fungicides, stabilizers, co-solvents, water softeners, etc. After the emulsion is used for a certain period of time, it will become waste liquid, which is called waste emulsion. There are many toxic and harmful chemicals in the waste emulsion. If it is not handled well, it will deteriorate the ecological environment and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/04C02F1/72C02F1/66
Inventor 丁建林丁浩淇何飞飞陈前
Owner 丁建林
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