Bipolar three-dimension electrode coupling treatment device for treatment of non-biodegradable organic wastewater

Abstract

The invention belongs to the technical field of treatment of non-biodegradable organic wastewater, and in particular relates to a bipolar three-electrode coupling technology. A bipolar particle electrode is formed by loading one or more than one of common metal oxides such as MnO2, CuO and Fe2O3 on gamma-Al2O3 which as taken as a carrier; and the bipolar particle electrode, as well as a negative electrode and a positive electrode which are normal conductive carbon fiber felts, so as to form a bipolar three-electrode coupling reactor; and by using ozone, catalytic oxidation is strengthened; water is discharged through a hollow fiber separating membrane; therefore, non-biodegradable wastewater organic pollutants are degraded efficiently and biodegradability of wastewater is improved. The technology is low in operation cost, easy in installation and low in working pressure; meanwhile, due to application of a direct-current electric field which is lower than 10V, the coupling treatment device effectively strengthens an electrochemical reaction, and enhances adaptability to acidic, alkaline and high-temperature wastewater; chemical oxygen demand (COD) of wastewater is reduced for more than 80%; and the coupling treatment device obviously improves solid-liquid separation efficiency, remarkably improves effluent quality and stabilizes effluent quality.

Description

technical field [0001] The invention relates to a method and a treatment device for treating refractory organic waste water with bipolar three-dimensional electrode coupling technology, belonging to the technical field of environmental protection. Background technique [0002] Electrochemical treatment of wastewater generally does not require the addition of oxidants, the equipment is simple, the volume is small, the amount of sludge is small, and the post-treatment is simple. It is often called an "environmentally friendly" green oxidation technology. In the late 1960s, with the rapid development of mass transfer theory, material science and power industry, the concept of three-dimensional electrodes was proposed on the basis of traditional two-dimensional electrodes. It is to fill the granular working electrode material between the electrodes of the traditional two-dimensional electrolyzer, and charge the surface of the filled working material to become a new third pole, t...

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to aim at the deficiencies of the above-mentioned prior art, use common transition metal oxides as active components, and give preference to a particle catalyst with low cost, stable properties and high electrocatalytic efficiency as the bipolar particle electrode, At the same time, a new type of three-electrode coupling technology is formed by organically coupling bipolar particle electrodes, DC electric fields, hollow fiber separation membranes, and carbon fiber carbon felts. Harmful pollution sources, wastewater treatment methods that achieve complete degradation of refractory biodegradable wastewater or generate harmless or degradable low-level organic matter

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