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Three-dimension electrode reactor

A technology of three-dimensional electrodes and reactors, which is applied in chemical instruments and methods, electrochemical water/sewage treatment, water/sewage treatment, etc., can solve problems such as rare research in the field of organic wastewater, improve biodegradability, ensure The effect of meeting emission standards

Inactive Publication Date: 2004-05-26
SUN YAT SEN UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

[0003] The three-dimensional electrode reactor has a large face-to-face ratio, a good mass transfer effect and a high current efficiency. It is an electrochemical reactor with high practical and theoretical value. It has been used in many applications in wastewater treatment, but At present, most of them focus on the treatment of wastewater containing heavy metal ions, and there are few studies in the field of organic wastewater (Simonsson, D.Chem.Soc.Rev.1997, 26(3), 181-189)

Method used

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example 1

[0028] Based on 91.0% iron filings (2-4mm particle size), 2% manganese dioxide, 0.01% platinum, 0.02% palladium, 0.5% copper oxide, 1.5% nickel oxide, 0.27% cobalt oxide and 0.7% oxide Zinc is used as an initiator, and a particle electrode with a particle size of 4-6mm made of 4% sodium carboxymethylcellulose as a binder is used as a working electrode; a three-dimensional electrode reaction using graphite and polyester non-woven diaphragm composite as an electrode device. at 0.3m 3 Under the air flow rate of / h, the phenol solution of 100mg / l was treated for 60 minutes under the voltage of 20 volts, and the removal rate reached 92%. Treat 500mg / l chloral aldehyde solution for 30 minutes, and its removal rate reaches 95%.

example 2

[0030] Based on 90% carbon, 2.0% manganese dioxide, 1.0% copper oxide, 1.25% nickel oxide, 0.22% cobalt oxide, 1.5% zinc oxide, 0.01% platinum and 0.02% palladium as initiator, 4% A particle electrode with a particle size of 4-6 mm made of sodium carboxymethyl cellulose as a binder is used as a working electrode; a three-dimensional electrode reactor is composed of graphite and polyester non-woven diaphragm as an electrode. at 0.16m 3 Under the air flow rate of / h, the 100mg / l NaCN solution was treated for 30 minutes at a voltage of 20 volts, and its CN - The removal rate reaches 97%. The chloral solution was treated for 30 minutes, and its removal rate reached 95%.

example 3

[0032]With 90% iron filings as the substrate, 3.0% manganese dioxide, 0.77% copper oxide, 2.1% nickel oxide, 0.3% cobalt oxide, 0.8% zinc oxide, 0.01% platinum and 0.02% palladium as the initiator, 3 % sodium carboxymethyl cellulose as the binder, the particle electrode with a particle size of 4-6mm is the working electrode; the three-dimensional electrode reactor is composed of graphite and polyester non-woven diaphragm as the electrode. at 0.6m 3 Under the air flow rate of / h, the COD of a printing and dyeing factory in Taiwan under the voltage of 28 volts Cr Printing and dyeing wastewater with a concentration of up to 10608mg / l is treated for 15 minutes, COD Cr Concentration dropped to 3672mg / l, its COD Cr The removal rate is 65.3%, and the decolorization rate is 95%.

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Abstract

The present invention relates to a three-D electrode reactor and its application for treating organic waste water. Said reactor is formed from bed body, feeder negative electrode, feeder positive electrode, particle electrode, water-distributing plate, aeration plate and D.C. power supply. It is a three-D electrode reactor using electric energy as excitation energy, air as raw material and particles electrode containing initiating agent as working electrode. Said reactor can produce strong oxidizing agents of H2O2 and OH, and can effectively make oxidation-decomposition, and can compltely mineralize organic pollutant into the inorganic materials of CO2 and water. It can be used for pretreating organic waste water, and can be used for making after treatment of waste water passed through biological chemical treatment so as to ensure standard discharge of waste water.

Description

technical field [0001] The invention relates to a three-dimensional electrode electrochemical reaction device capable of generating hydroxyl radicals. Background technique [0002] The treatment of organic pollutants, especially high-concentration organic pollutants, is a difficult and hot point in the treatment of industrial wastewater in the world. The deep oxidation technology (AOTs) proposed by Glaze et al. provides an important way to control organic pollutants (W.H.Glaze, F.Beltranand T.Tuhkanen, Water Pollution Res.J.Canada, 1992, 27:23), has become A new water treatment technology that is developing rapidly. Its main feature is to make full use of free radicals, especially the strong oxidation of OH of hydroxyl radicals, which will completely oxidize and degrade organic pollutants. Related devices are very meaningful. [0003] The three-dimensional electrode reactor has a large face-to-face ratio, a good mass transfer effect and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/46C02F1/461C02F1/72
Inventor 朱锡海陈卫国熊亚关耀楚罗传荣彭玉凡
Owner SUN YAT SEN UNIV
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