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Waste water organic pollutant degradation system based on perovskite three-dimensional electrode

A technology of organic pollutants and three-dimensional electrodes, which is applied in the direction of water pollutants, water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of limited application effects, improve degradation efficiency, improve surface activity and Active site, effect of excellent dispersibility

Active Publication Date: 2022-03-18
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The main purpose of the present invention is to provide a system for degrading organic pollutants in wastewater based on a perovskite three-dimensional electrode, aiming to solve the technical problem that the application effect of three-dimensional electrochemical technology on the degradation of organic matter in wastewater is limited in the above-mentioned prior art

Method used

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  • Waste water organic pollutant degradation system based on perovskite three-dimensional electrode
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  • Waste water organic pollutant degradation system based on perovskite three-dimensional electrode

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Effect test

Embodiment 1

[0065] Preparation of perovskite particle electrode materials, including:

[0066] 1. Mix 20.2g of ferric nitrate nonahydrate, 21.65g of lanthanum nitrate hexahydrate and 21g of citric acid monohydrate with 500mL of deionized water, and stir the solution mechanically at room temperature for 30min at a speed of 500r / min to form a sol liquid .

[0067] 2. Raise the temperature of the formed sol liquid to 100° C. and stir for 8 hours, and add 25 g of columnar activated carbon to continue mechanical stirring before the gel substance is formed. After the gel substance was formed, the sample was placed in a drying oven at 80°C for 12 hours.

[0068] 3. Grind the dried sample and place it in a muffle furnace for calcination. The calcination time is 5 hours, the calcination temperature is 650°C, and the heating rate is 5°C / min. After the calcination, the perovskite granular electrode material (LaFeO 3 / CAC).

[0069] 4. Characterization of perovskite granular electrode materials: ...

Embodiment 2

[0077] Performance exploration of different degradation systems:

[0078] The preparation concentration is the carbamazepine solution of 10mg / L, with H 2 SO4 and NaOH solutions adjust the pH to the desired value (3-9). The pH testing instrument is a pH meter, the concentration of carbamazepine is analyzed and determined by a UPLC measuring instrument, and the TOC value in the reaction is monitored by a TOC analyzer.

[0079] 1. In the traditional electrochemical (2D) reaction system, add the prepared carbamazepine (CBZ) simulated wastewater into the electrochemical reaction device, wherein the concentration of carbamazepine is 10mg / L, Na 2 The concentration of SO4 was 50mM, the initial pH of the simulated waste liquid was 7, the applied DC electric field strength was 0.8V / cm, and samples were taken after 120 minutes of electrified degradation, and the samples were taken for UPLC and TOC related determinations. After 120 minutes, carbamazepine (CBZ ) degradation efficiency wa...

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Abstract

The invention provides a wastewater organic pollutant degradation system based on a perovskite three-dimensional electrode, which comprises a three-dimensional electrochemical reactor, wastewater containing organic pollutants is degraded in a tank body of the three-dimensional electrochemical reactor under the action of an electric field generated between an anode plate and a cathode plate of the three-dimensional electrochemical reaction, and a perovskite type particle electrode material is filled between the cathode plate and the anode plate of the tank body. The perovskite type particle electrode is an activated carbon particle electrode loaded with perovskite type oxide on the surface, the preparation raw materials of the perovskite type particle electrode comprise lanthanum nitrate, ferric nitrate, citric acid and water, and activated carbon is mixed before gel is formed. By preparing the perovskite type particle electrode material and using the perovskite type particle electrode material in the three-dimensional electrochemical reactor, the degradation efficiency of the three-dimensional electrochemical reactor on organic pollutants in wastewater can be improved.

Description

technical field [0001] The invention relates to the field of waste water treatment, in particular to a waste water organic pollutant degradation system based on a perovskite three-dimensional electrode. Background technique [0002] Environmental pollution of pharmaceuticals, on the one hand, has a lot to do with the mechanism of action of drugs in the living body. After the drug enters the living body, part of the active components are directly excreted from the body without any change. And some medicines are discharged into the environment during the waste process. Eventually, the active components of these waste drugs will enter the drinking water system, accumulate in drinking water and food, and eventually affect human health. Carbamazepine (CBZ), an antiepileptic drug used worldwide, is one of the most commonly found drugs in soil and water environments. The study found that CBZ has persistent properties of organic pollutants, which may lead to long-term environmenta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461C02F101/30
CPCC02F1/46114C02F1/46104C02F2101/30C02F2001/46142
Inventor 赵飞平柴立元崔永永闵小波胡文吉豪彭聪唐崇俭梁彦杰
Owner CENT SOUTH UNIV
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