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3D electrode reactor and application to non-degradable organic wastewater treatment

A three-dimensional electrode and reactor technology, used in textile industry wastewater treatment, water/sewage treatment, oxidized water/sewage treatment, etc. Biochemical, ensuring the effect of meeting the emission standards

Inactive Publication Date: 2009-08-26
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

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 are concentrated on the treatment of wastewater containing heavy metal ions, but the research in the field of organic wastewater is rare (Simonsson, D.Chem.Socv.Rev.1997, 26 (3), 181-189)
"A three-dimensional electrode reactor for treating refractory organic wastewater (CN1850644A)" developed by Beijing University of Chemical Technology requires aeration and oxygenation, and the service life of activated carbon and its activation are not mentioned; "Three-dimensional electrode reactor (CN2564547Y) developed by Sun Yat-sen University )” requires aeration and oxygenation, and the production process of the particle electrode is complicated

Method used

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  • 3D electrode reactor and application to non-degradable organic wastewater treatment
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  • 3D electrode reactor and application to non-degradable organic wastewater treatment

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Embodiment 1

[0018] Using the three-dimensional electrode reactor of the present invention to treat EDTA wastewater, the control process conditions are: EDTA wastewater 500mL, pH value 7.7, water inflow rate 200mL / min, current density 40A / m 2 , when the influent COD is 500mg / L, the effluent COD is 46mg / L in 0.5h, and the removal rate reaches over 90%. Respectively 172mg / L and 194mg / L (see attached figure 2 ), reaching the national "Integrated Wastewater Discharge Standard" (GB8798-1996).

Embodiment 2

[0020] The waste water containing EDTA, sodium dodecylbenzenesulfonate and phenol is treated respectively with the three-dimensional electrode reactor of the present invention, the control process conditions are: waste water 500mL, influent pH value 7.7, influent COD concentration is 1000mg / L, influent Water velocity 200mL / min, current density 40A / m 2 , the effluent COD concentration was lower than 100mg / L in 3 hours, and the removal rate was higher than 90% (see attached image 3 ), reaching the first-level standard in the national "Integrated Wastewater Discharge Standard" (GB8798-1996).

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Abstract

The invention relates to a wastewater treatment device, in particular to a 3D electrode reactor applicable to non-degradable organic wastewater treatment. The reactor consists of a tank, an electrode cathode, an electrode anode, a particle electrode, a diaphragm plate and a DC power supply; the 3D electrode reactor takes electric energy as excitation energy, and takes the particle electrode with catalytic activity as a work electrode. The reactor can be used for ordinary organic wastewater treatment and the non-degradable organic wastewater treatment to reach standard stably; the reactor can be used for pretreatment of non-biodegradable organic wastewater with high concentration to decompose the wastewater into easily biodegradable organic matters with smaller molecular weight to greatly enhance biodegradability of the wastewater; and the reactor can also be used for post-treatment of wastewater biochemical process to ensure that wastewater discharge reaches the standard.

Description

technical field [0001] The invention relates to a wastewater treatment device and its application in the treatment of refractory organic wastewater, in particular to a three-dimensional electrode reactor for removing organic substances in organic wastewater by electrolytic oxidation, which is suitable for the treatment of various refractory organic wastewater . Background technique [0002] The treatment of organic pollutants, especially biodegradable organic pollutants, is a hot and difficult point in the treatment of industrial wastewater in the world. Researchers have also proposed some treatment methods for refractory organic wastewater. Among them, electrochemical treatment of wastewater has the characteristics of advanced technical and economic indicators, non-toxic, and clean, and has attracted more and more attention. However, the relevant researches are mostly limited to two-dimensional flat electrodes. Due to the small surface-to-body ratio of the electrode, the m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461C02F1/72C02F103/30
Inventor 柴立元王云燕尤翔宇舒余德闵小波彭兵杨志辉王海鹰
Owner CENT SOUTH UNIV
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