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Method and device for treating high-concentration wastewater by electrocatalytic oxidation

A technology for electrocatalytic oxidation and high-concentration wastewater, which is applied in chemical instruments and methods, water/sewage treatment, multi-stage water/sewage treatment, etc. High waste water treatment costs and other issues, to achieve the effect of no catalyst consumption, improve waste water treatment efficiency, improve quality and use effect

Inactive Publication Date: 2020-06-05
ANJIEYU BEIJING OILFIELD TECHNICAL SERVICES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The shortcoming of this patent: the high-concentration wastewater treated by the wastewater treatment device using the special round-hole titanium mesh electrode cannot meet the reuse standard, and it still needs to be followed up.
The disadvantage of this patent: the composite catalyst filler added by it is a consumable product, which cannot be reused, and the treatment cost of high-concentration wastewater is high

Method used

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  • Method and device for treating high-concentration wastewater by electrocatalytic oxidation
  • Method and device for treating high-concentration wastewater by electrocatalytic oxidation
  • Method and device for treating high-concentration wastewater by electrocatalytic oxidation

Examples

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Embodiment 1

[0042] A method for treating high-concentration wastewater by electrocatalytic oxidation, comprising the following steps: a pretreatment step, an electrocatalytic oxidation step, a microwave purification step, and a posttreatment step.

[0043] In the pretreatment step, the pH value of the high-concentration wastewater to be treated is adjusted to 6.2, and the HAP particles loaded with catalytic substances are put into the wastewater to be treated, and stirred for 30 minutes, and the stirring speed is 50 RPM.

[0044] The preparation method of the HAP particles loaded with catalytic substances, in an acetone environment, input active substances: CoFe 2 o 4 , nickel nitrate, Ti metal powder, FeNiO 4 , Ba(AlO 2 ) 2 , after ultrasonic dispersion to prepare the mixed solution, heat the mixed solution to 110°C and keep it warm for 70min; then put hydroxyapatite (HAP) into the mixed solution, keep the temperature of the mixed solution at 80°C, and stir for 50min , the stirring s...

Embodiment 2

[0055] A method for treating high-concentration wastewater by electrocatalytic oxidation, comprising the following steps: a pretreatment step, an electrocatalytic oxidation step, a microwave purification step, and a posttreatment step.

[0056] In the pretreatment step, the pH value of the high-concentration wastewater to be treated is adjusted to 6.4, and the HAP particles loaded with catalytic substances are put into the wastewater to be treated, and stirred for 30 minutes, and the stirring speed is 60 RPM.

[0057] The preparation method of the HAP particles loaded with catalytic substances, in an acetone environment, input active substances: CoFe 2 o 4 , nickel nitrate, Ti metal powder, FeNiO 4 , Ba(AlO 2 ) 2 , after ultrasonic dispersion to prepare the mixed solution, heat the mixed solution to 125°C and keep it warm for 70min; then put hydroxyapatite (HAP) into the mixed solution, keep the temperature of the mixed solution at 80°C, and stir for 55min , the stirring s...

Embodiment 3

[0068] A method for treating high-concentration wastewater by electrocatalytic oxidation, comprising the following steps: a pretreatment step, an electrocatalytic oxidation step, a microwave purification step, and a posttreatment step.

[0069] In the pretreatment step, the pH value of the high-concentration wastewater to be treated is adjusted to 6.5, and the HAP particles loaded with catalytic substances are put into the wastewater to be treated, and stirred for 30 minutes, and the stirring speed is 80 RPM.

[0070] The preparation method of the HAP particles loaded with catalytic substances, in an acetone environment, input active substances: CoFe 2 o 4 , nickel nitrate, Ti metal powder, FeNiO 4 , Ba(AlO 2 ) 2 , after ultrasonic dispersion to prepare the mixed solution, heat the mixed solution to 135°C and keep it warm for 70 minutes; then put hydroxyapatite (HAP) into the mixed solution, keep the temperature of the mixed solution at 80°C, and stir for 60 minutes , the ...

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Abstract

The invention provides a method and a device for treating high-concentration wastewater through electrocatalytic oxidation. The method comprises the following steps: a pretreatment step, an electrocatalytic oxidation step, a microwave purification step and a post-treatment step, wherein a specific spraying device for electrode manufacturing is adopted in the electrocatalytic oxidation step. The method has the beneficial effects that after the high-concentration wastewater is treated, the COD removal rate is greater than 99.9%; all indexes meet the water treatment discharge standard, the reuserequirement in production can also be met, and all the indexes can be reused in all production links without subsequent treatment; in addition, the added catalytic substance has a remarkable catalyticeffect, can be recycled, and can effectively maintain catalytic activity, improve wastewater treatment efficiency and reduce wastewater treatment cost.

Description

technical field [0001] The invention relates to the field of wastewater treatment, in particular to a treatment method and device for treating high-concentration wastewater by electrocatalytic oxidation. Background technique [0002] With the rapid development of my country's industry, a large amount of industrial wastewater discharge has brought enormous pressure to the environment. Industrial wastewater refers to the wastewater, sewage and waste liquid produced in the process of industrial production, which contains industrial production materials, intermediate products and products lost with water, as well as pollutants produced in the production process. There are usually three types of industrial wastewater classification, a. according to the chemical properties of the pollutants; b. according to the products and objects of the enterprise; c. according to the main components of the pollutants; different industrial wastewater treatment methods and devices are different, ...

Claims

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Application Information

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IPC IPC(8): C02F9/06
CPCC02F1/302C02F1/44C02F1/46109C02F1/4672C02F1/66C02F1/725C02F9/00C02F2001/46142
Inventor 严希海刘木林严谨
Owner ANJIEYU BEIJING OILFIELD TECHNICAL SERVICES CO LTD