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Electrochemical water treatment method for bipolar synergistic catalytic degradation of organic matters

A technology of synergistic catalysis and organic matter, applied in chemical instruments and methods, oxidized water/sewage treatment, sterilization/microdynamic water/sewage treatment, etc., to reduce energy consumption, improve removal efficiency, and efficiently degrade organic matter.

Pending Publication Date: 2022-01-04
BEIHANG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But this technology needs to treat the exhaust gas, and the ozone generator needs to provide pure oxygen and additional electric energy input

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  • Electrochemical water treatment method for bipolar synergistic catalytic degradation of organic matters
  • Electrochemical water treatment method for bipolar synergistic catalytic degradation of organic matters
  • Electrochemical water treatment method for bipolar synergistic catalytic degradation of organic matters

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Embodiment 1

[0041] Titanium-based transition metal doped tin dioxide anode and carbon-based metal oxide nanocarbon material cathode (MnO 2 / CNTs-C / PTFE gas diffusion cathode) for oxygen reduction electro-oxidation (ORR-EO). The negative and positive poles are arranged in parallel in the electrolytic cell without diaphragm, and the effective area is 5×5cm 2 , the distance between the plates is 1cm, 200mg / L phenol wastewater is treated, and the electrolyte is 0.1M Na 2 SO 4 , current density 10mA / cm 2 Charge. The cathode side is fed with air, and the air flow rate is not lower than 5mL / min / cm 2 .

[0042] The preparation method of the catalytic layer of the titanium-based transition metal-doped tin dioxide anode is as follows: tin tetrachloride and various transition metal chlorides are dissolved in ethanol according to the element molar ratio of 24:1 until transparent, and hydrochloric acid is added to suppress the generation of white precipitate , repeatedly coated on a titanium sub...

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Abstract

The invention discloses an electrochemical water treatment method for bipolar synergistic catalytic degradation of organic matters. The method comprises the steps: arranging a titanium-based transition metal doped tin dioxide anode and a carbon-based metal oxide nano carbon material cathode in a diaphragm-free electrolytic bath in parallel, containing waste water in the electrolytic bath, enabling a direct-current constant-voltage power source to provide 3-5V voltage and 5-20mA / cm<2> current density, and introducing air into the cathode side, wherein the air velocity is not lower than 5mL / min / cm < 2 >. The energy consumption of an electrochemical technology can be greatly reduced, and the removal efficiency of organic matters is improved.

Description

technical field [0001] The invention relates to the technical fields of environmental electrochemistry and advanced oxidation water treatment. More specifically, the invention relates to an electrochemical water treatment method for bipolar synergistic catalytic degradation of organic matter. Background technique [0002] Traditional electrochemical advanced oxidation technology mainly relies on efficient and stable anodes to degrade organic matter. The mainstream anodes mostly use titanium-based metal oxide electrodes. The anode degrades organic matter through direct oxidation, and can also generate Cl 2 , HClO, O 3 and other indirect degradation of organic matter. The mainstream cathode uses Fe, Ni and other metal electrodes for hydrogen evolution reaction, and removes some organic matter through air flotation. The low potential of the cathode reaction also leads to huge energy consumption in the electrochemical advanced oxidation method. Lu Shanfu et al. (patent appli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/467C02F1/461C02F1/72C02F1/78B01J23/34B01J21/18B01J23/843C02F101/30
CPCC02F1/4672C02F1/46109C02F1/725C02F1/722C02F1/78B01J23/34B01J21/185B01J23/8435C02F2101/30C02F2001/46133C02F2001/46142
Inventor 梁大为曲超张树军卢善富相艳李彦刚罗京
Owner BEIHANG UNIV