Preparation method of advanced oxidation system for treating oily sludge

An advanced oxidation and system technology, applied in the field of electrochemistry, can solve problems such as chemical stability and oxygen evolution overpotential difference

Pending Publication Date: 2019-10-11
长春光华环保有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The electrode materials obtained from the two patents disclosed above have the characteristics of good electrical conductivity, but their chemical stability and oxygen evolution overpotential are poor

Method used

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  • Preparation method of advanced oxidation system for treating oily sludge
  • Preparation method of advanced oxidation system for treating oily sludge
  • Preparation method of advanced oxidation system for treating oily sludge

Examples

Experimental program
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Embodiment 1

[0033] This embodiment provides a method for preparing an advanced oxidation treatment oily sludge system, which is characterized in that it includes the following steps:

[0034] S1. Titanium substrate cleaning: Vacuum sintering is used to prepare a porous titanium plate 9 with a porosity of 20%. The porous titanium plate 9 is provided with a gas introduction cavity 10, and the porous titanium plate 9 is put into boiling degreasing liquid. After 1 hour, take it out and place it in deionized water and clean it with ultrasonic waves for 30 minutes; achieve the purpose of removing oil stains and oxide films on the surface, removing residual attachments in the pores of the porous titanium plate 9, and forming a pitted surface on the surface of the porous titanium plate 9.

[0035] S2. Etching: Put the porous titanium plate treated in step S1 into 10 wt% oxalic acid solution, heat to 100° C., keep it warm for 35 minutes, and rinse the porous titanium plate 9 with clean water after ...

Embodiment 2

[0042] This embodiment provides a method for preparing a titanium-based electrode containing a titanium oxide coating, comprising the following steps:

[0043] S1. Titanium substrate cleaning: Vacuum sintering is used to prepare a porous titanium plate 9 with a porosity of 10%. The porous titanium plate 9 is provided with a gas introduction cavity 10, and the porous titanium plate 9 is put into boiling degreasing liquid. After 2 hours, take it out and place it in deionized water and clean it with ultrasonic waves for 10 minutes; to achieve the purpose of removing oil stains and oxide films on the surface, removing residual attachments in the holes of the porous titanium plate 9, and forming a pitted surface on the surface of the porous titanium plate 9.

[0044] S2. Etching: Put the porous titanium plate 9 treated in step S1 into an 8wt% oxalic acid solution, heat it to 95° C., and keep it warm for 60 minutes. After the etching, rinse the porous titanium plate 9 with clean wate...

Embodiment 3

[0051] This embodiment provides a method for preparing a titanium-based electrode containing a titanium oxide coating, comprising the following steps:

[0052] S1. Titanium substrate cleaning: Vacuum sintering is used to prepare a porous titanium plate 9 with a porosity of 30%. The porous titanium plate 9 is provided with a gas introduction cavity 10, and the porous titanium plate 9 is put into boiling degreasing liquid. After 1 hour, take it out and place it in deionized water and clean it with ultrasonic waves for 20 minutes; achieve the purpose of removing oil stains and oxide films on the surface, removing residual attachments in the pores of the porous titanium plate 9, and forming a pitted surface on the surface of the porous titanium plate 9.

[0053] S2. Etching: put the porous titanium plate 9 treated in step S1 into a 10 wt% oxalic acid solution, heat to 100° C., and keep it warm for 30 minutes. After the etching, rinse the porous titanium plate 9 with clean water;

...

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Abstract

The invention belongs to the field of electrochemistry, and particularly relates to a preparation method of an advanced oxidation system for treating oily sludge. The method comprises the following steps of S1, titanium substrate cleaning, wherein a titanium substrate is put into degreasing liquid and taken out for cleaning; S2, etching, wherein the titanium substrate is put into 2-10 wt% of an oxalic acid solution, heating is conducted to reach 80-100 DEG C, and heat preservation is conducted for 30-240 minutes; S3, coating liquid preparation, wherein nitrate and / or metal chloride are mixed in proportion and then put into an organic solvent, ultrasonic dissolution is conducted, and the coating liquid is obtained; S4, coating, wherein the coating liquid is uniformly applied to the surfaceof the titanium substrate treated in step S2, and then the coated titanium substrate is baked at 80-120 DEG C for 90 minutes, the baked titanium substrate is calcined at 350-550 DEG C for 30-120 minutes, and cooling is conducted; S5, titanium black spraying, wherein in a protective atmosphere, titanium black powder is sprayed to the titanium substrate treated in step 4 through plasma spraying; S6,system construction. Accordingly, the treatment effect of the oily sludge is improved.

Description

technical field [0001] The invention belongs to the field of electrochemistry, and in particular relates to a preparation method of an advanced oxidation system for treating oily sludge. Background technique [0002] As an important source of pollution, oily sludge is more and more harmful to the environment, and its harmless treatment has become increasingly urgent. The current methods are mainly physical methods (incineration), pyrolysis, biological methods, solvent extraction and conditioning and centrifugation. Traditional methods have disadvantages such as high energy consumption, long processing cycle, complicated process, and large investment. Some methods cannot recover oil, causing secondary pollution to the environment. [0003] Titanium oxide is considered to be the most potential electrode material in electrochemical applications due to its high conductivity and strong corrosion resistance. In addition, titanium oxide is also considered to be a low-cost material...

Claims

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Application Information

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IPC IPC(8): C02F11/00
CPCC02F11/006
Inventor 郭九吉张淑荣
Owner 长春光华环保有限责任公司
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