Electrocatalytic particle electrode for efficiently degrading bezafibrate in wastewater and preparation method thereof

A technology of bezafibrate and particle electrodes, applied in chemical instruments and methods, water pollutants, water/sewage treatment, etc., can solve the problems of small impedance of activated carbon particles, reduce current efficiency, high energy consumption, etc., and achieve strong adsorption performance , large pore size and large specific surface area

Inactive Publication Date: 2016-06-01
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The technology of degrading organic pollutants in wastewater by bipolar three-dimensional electrodes has not been industrialized so far. The main reasons are low current efficiency and high energy consumption. The difficulty in dealing with refractory organics lies in two "time" issues: one is to deal with degraded organics How to improve the electrocatalytic speed and efficiency; another is the electrode life problem, that is, how to improve the stability of the electrode
Several particle electrodes commonly used at present include activated carbon, metal oxides, and supported metals or metal oxides. However, these particle electrodes have the following problems: the impedance of activated carbon particles is relatively small, and it is easy to form a short circuit when packed in a three-dimensional electrode reactor. current, thereby reducing the current efficiency, and the activated carbon particles will also appear pulverization during the electrolysis process; the metal oxide particle electrode will dissolve some toxic ions during the electrolysis process, which will become secondary pollutants, such as PbO 2 Particle electrode; the supported metal or metal oxide overcomes the shortcomings of activated carbon particle electrode and improves the water treatment effect, but there are also problems such as easy falling off of the loaded metal
Therefore, the technical problem to be solved in the present invention is to provide a persistent electrocatalytic particle electrode and a preparation method with high-efficiency degradation of bezafibrate for the refractory substance bezafibrate in the effluent of urban sewage treatment plants, so as to solve the problem of existing Sewage technology to deal with the problems of low bezafibrate, insufficient particle electrode stability, short life, and high cost of electrode materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A. The non-ferrous metal slag particles are ball milled in a ball mill. After being taken out, they are boiled in dilute acid (10% hydrochloric acid) and dilute alkali (10% sodium hydroxide) for half an hour, then rinsed with distilled water and soaked in an oven at 105°C Dry, then pass through a 60-mesh sieve, and take dry fine non-ferrous metal slag particles for use;

[0028] B. Put the clay in an oven for drying at 105°C, crush the dried clay in a mortar, then pass through a 60-mesh sieve, and take the dried fine clay for use;

[0029] C. Combine the dried fine non-ferrous metal slag particles in step A, the dried fine clay, carbon powder and Fe in step B 3 O 4 According to the weight percentage of 50%:20%:20%:10%, mix and stir evenly to prepare mixed raw meal;

[0030] D, SnC1 4 ·5H 2 0 and Mn(NO 3 ) 2 Dissolve in hydrochloric acid with a substance ratio of 82:45, then add absolute ethanol to make a solution, stir evenly to obtain a sol;

[0031] E. Immerse the mixed raw m...

Embodiment 2

[0036] A. The non-ferrous metal slag particles are ball milled in a ball mill. After being taken out, they are boiled in dilute acid (10% hydrochloric acid) and dilute alkali (10% sodium hydroxide) for half an hour, then rinsed with distilled water and soaked in an oven at 105°C Dry, then pass through a 60-mesh sieve, and take dry fine non-ferrous metal slag particles for use;

[0037] B. Put the clay in an oven for drying at 105°C, crush the dried clay in a mortar, then pass through a 60-mesh sieve, and take the dried fine clay for use;

[0038] C. Combine the dried fine non-ferrous metal slag particles in step A, the dried fine clay, sawdust and Fe in step B 2 O 3 According to the weight percentage of 55%:15%:15%:15%, mix and stir evenly to prepare mixed raw meal;

[0039] D, SnC1 4 ·5H 2 0 and Mn(NO 3 ) 2 Dissolve in hydrochloric acid with a substance ratio of 82:45, then add absolute ethanol to make a solution, stir evenly to obtain a sol;

[0040] E. Immerse the mixed raw meal in...

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Abstract

The invention relates to an electrocatalytic particle electrode for efficiently degrading bezafibrate in wastewater and a preparation method thereof, belonging to the technical field of wastewater treatment. The preparation method comprises the following steps: uniformly mixing and stirring treated nonferrous metal slag, clay, a pore forming agent and an activator used as raw materials according to a certain weight ratio to prepare a mixed crude material, impregnating the mixed crude material in a carrier sol, drying, cooling to room temperature, extruding to obtain fresh pellets, drying, heating at specific temperature for activation and roasting for some time, taking out, and cooling to room temperature to obtain the finished product. The electrocatalytic particle electrode for efficiently degrading bezafibrate is porous, has large specific area, high adsorbability and favorable electrocatalytic property, and can degrade bezafibrate efficiently. The electrocatalytic particle electrode and preparation method thereof fully utilize the nonferrous metal slag, thereby changing the waste into valuable substances, reducing the environmental pollution and solving the problems of land occupation and the like.

Description

Technical field [0001] The invention belongs to the technical field of wastewater treatment, and particularly relates to an electrocatalytic particle electrode for treating bezafibrate in urban sewage and a preparation method thereof. Background technique [0002] With the development of economy, heavy metals, phenolic compounds and other non-biodegradable emerging organic pollutants from industrial wastewater are widely present in urban sewage. These substances are generally considered to be toxic to humans and the environment. On the one hand, the traditional sewage treatment process cannot effectively remove it, causing secondary pollution to the receiving water body and the remaining sludge disposal site, which will affect the water supply plant water source and the local groundwater quality; on the other hand, the conventional water supply treatment process coagulation, precipitation, Filtration has no obvious effect on some of the substances. Although advanced oxidation an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461C02F101/34C02F101/36C02F101/38
CPCC02F1/46114C02F2101/34C02F2101/36C02F2101/38
Inventor 冯岩汪少华巩玉帅宋亭李雪
Owner UNIV OF JINAN
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