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A water treatment device and method for simultaneously generating electricity and converting high-valent metal ions

A high-priced metal ion, water treatment device technology, applied in water/sewage treatment, water treatment parameter control, chemical instruments and methods, etc. High problems, to achieve the effect of wide application range of pH, good effect, and low requirements for raw materials and equipment

Active Publication Date: 2020-07-24
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The Chinese patent with application number 201110386545.7 discloses a device and method for removing metal ions by self-generated electric energy. The device is divided into an anode chamber and a cathode chamber, with an ion or proton exchange membrane in the middle, and an aqueous solution of reducing substances in the anode chamber , the cathode chamber contains high-priced metal ions, but the price of ion or proton exchange membrane is relatively high, and it is easy to age in wastewater, so it is not suitable for large-scale application

Method used

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  • A water treatment device and method for simultaneously generating electricity and converting high-valent metal ions
  • A water treatment device and method for simultaneously generating electricity and converting high-valent metal ions
  • A water treatment device and method for simultaneously generating electricity and converting high-valent metal ions

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Embodiment 1

[0050] Embodiment 1, the water treatment device (unipolar type) of synchronous electricity production and reduction of high-priced heavy metal ions

[0051] 1. The structure of the water treatment device

[0052] Such as figure 2 As shown, the electrochemical system ④ in the water treatment device for synchronous power generation and conversion of high-valent metal ions in this embodiment includes a primary battery unit; the primary battery unit includes:

[0053] An active metal anode 1 composed of an iron plate with a thickness of 3mm;

[0054] The porous conductive matrix graphite felt (the average diameter of the graphite fiber is 15 microns) and the loading on the graphite felt is 10mg / cm 2 A porous catalytic cathode 3 with a thickness of 5mm and a porosity of 60% composed of catalyst polyaniline;

[0055] A porous dielectric isolation layer 2 composed of polypropylene fibers with a porosity of 70%, a pore diameter of 0.8 μm, and a thickness of 2 mm, which separates t...

Embodiment 2

[0064] Embodiment 2, the water treatment device (bipolar type) of simultaneous electricity production and reduction of high-priced heavy metal ions

[0065] 1. The structure of the water treatment device

[0066] Such as image 3 As shown, the electrochemical system ④ in the water treatment device for synchronous power generation and conversion of high-valent metal ions in this embodiment includes 6 primary battery cells; each primary battery cell includes:

[0067] An active metal anode 1 composed of an iron plate with a thickness of 3 mm;

[0068] The porous conductive matrix graphite felt (the average diameter of the graphite fiber is 15 μm) and the load on the graphite felt is 10 mg / cm 2 A porous catalytic cathode 3 with a thickness of 5mm and a porosity of 60% composed of catalyst polyaniline;

[0069] A porous dielectric isolation layer 2 composed of polypropylene fibers with a porosity of 70%, a pore diameter of 0.8 μm, and a thickness of 2 mm, which separates the ac...

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Abstract

The invention discloses a water treatment device and method capable of synchronously producing electricity and converting high-valence metal ions. The water treatment device comprises an electrochemical system, wherein the electrochemical system comprises at least one galvanic cell. Each galvanic cell comprises an active metal positive electrode, which is made of metal with a negative standard electrode potential; a porous catalytic negative electrode, which is composed of a porous conductive matrix; and a porous dielectric isolation layer, which separates the active metal positive electrode from the porous catalytic negative electrode. The device and method of the invention are convenient to operate, low in requirements on raw materials and equipment, and capable of treating water contaminated by high-valence heavy metals (such as chromium and vanadium); the device and method have good effect, heavy metal ion removal rate of 90% or more, and electricity production power density of 810W / m<3>; and thus, a novel approach is provided for industrial large-scale implementation of synchronous power generation and removal of high-valence heavy metal ions in water.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a water treatment device and method for simultaneously generating electricity and converting high-valent metal ions. Background technique [0002] With the continuous development of the industrialization process, the discharge of industrial wastewater has attracted more and more attention. In the process of exploring and dealing with industrial pollution, people are not limited to the removal and degradation of pollutants, but are required to realize the recovery of energy or resources while purifying wastewater. Chemicals in wastewater are a potential source of energy and matter. Among them, redox species in wastewater account for a considerable proportion, especially high-valent metal compounds. In addition, metal compounds with high oxidation states often exhibit high mobility and hazards, such as high-priced radioactive metals, such as U(VI), Tc(VII), Np...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/461C02F101/20
CPCC02F1/46109C02F1/46176C02F2001/46133C02F2001/46142C02F2101/20C02F2201/46105C02F2201/46135C02F2201/4614C02F2209/06C02F2303/10
Inventor 吉庆华刘会娟张弓曲久辉
Owner TSINGHUA UNIV