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An electrocatalytic oxidation device and process method operating under ultra-high voltage conditions

An electrocatalytic oxidation and ultra-high voltage technology, which is applied in chemical instruments and methods, oxidized water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of low treatment efficiency and high energy consumption of electrocatalytic oxidation process , to achieve the effect of improving current utilization efficiency, small operating current and good insulation

Active Publication Date: 2018-12-11
CNOOC TIANJIN CHEM RES & DESIGN INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the deficiencies of the prior art, to develop an electrocatalytic oxidation process that operates under ultra-high voltage conditions, to solve the problems of low treatment efficiency and large energy consumption in the traditional electrocatalytic oxidation process

Method used

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  • An electrocatalytic oxidation device and process method operating under ultra-high voltage conditions
  • An electrocatalytic oxidation device and process method operating under ultra-high voltage conditions
  • An electrocatalytic oxidation device and process method operating under ultra-high voltage conditions

Examples

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example 1

[0037] A petrochemical company in Hebei Province contained a large amount of refractory substances in the production wastewater due to the complexity of the refined oil products. The COD of the wastewater was about 80mg / L after biochemical treatment, which could not meet the relevant effluent discharge standards. The engineering application research on the advanced treatment of the company's biochemical effluent was carried out by using an electrocatalytic oxidation device operating under ultra-high voltage conditions. The results show that when the operating voltage is 36000V, the operating current is 10mA, the hydraulic retention time is 30min, and the effluent COD≤60mg / L, the effluent meets the standard discharge water quality requirements. At this time, the current efficiency is 55%. Compared with the traditional two-dimensional electrolysis equipment, the power consumption per ton of water is reduced by about 0.9kw.h under the condition that the treatment effect remains th...

example 2

[0039] After biochemical treatment of pharmaceutical wastewater from a factory in Tianjin, in order to achieve near-zero discharge of wastewater, an ultrafiltration-reverse osmosis double-membrane system was used to reuse part of the biochemical effluent. After being treated by the double-membrane system, a certain amount of concentrated liquid will be produced. 90mg / L, conductivity about 1000-5000μs / cm, Cl - The content is about 700-900mg / L. The concentrated solution is not suitable for further biochemical treatment due to its small displacement and the difficulty of biochemical degradation of the contained substances. After being treated with an electrocatalytic oxidation device operating under ultra-high voltage conditions, when the operating voltage is 50,000V, the operating current is 10-15mA, the hydraulic retention time in the reactor is 30min, and the effluent COD≤50mg / L, it meets the standard discharge water quality It is required that the current efficiency at this t...

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Abstract

The invention discloses an electrocatalytic oxidation device running under an ultrahigh voltage condition and a process method. The electrocatalytic oxidation device comprises a multi-stage serial spherical particle active electrode reaction device and a direct-current stabilized power supply device capable of generating ultrahigh voltage, wherein the interior of the multi-stage serial spherical particle active electrode reaction device contains a set of multi-stage serial spherical particle active electrode reaction system; particle electrodes are equidistantly fixed into A rows, B columns and C layers through positioning insulated plastic rods; a first spherical particle active electrode is connected with the positive electrode of the power supply device, and a (A*B*C)th spherical particle active electrode is connected with the negative electrode of the power supply device; a power-generating main body of the direct-current stabilized power supply device capable of generating the ultrahigh voltage is a rotor-type frictional electrifier; a rotating wheel of the electrifier is driven by a frequency-variable motor; the rotating speed rate of the rotor-type frictional electrifier is adjusted by controlling different rotating speeds of the motor; and output voltage is stabilized by a voltage-stabilizing device to obtain ultrahigh direct-current voltage of 2000-50000V.

Description

technical field [0001] The invention relates to an electrocatalytic oxidation process operating under ultra-high voltage conditions, is suitable for treating industrial refractory organic waste water, and belongs to the professional field of environmental engineering. Background technique [0002] In recent years, with the development of the country's industry and economy, many wastewater containing toxic and harmful substances that are difficult to biodegrade have continuously entered the environment, causing great harm to industrial and agricultural production, people's lives and human health. Under this background , the state requires more and more stringent standards for wastewater discharge, and the up-to-standard treatment of many refractory wastewater has become a difficult problem in the field of environmental protection. [0003] On the other hand, as a brand-new advanced oxidation technology, electrocatalytic oxidation technology has been successfully applied in th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/461C02F1/72
CPCC02F1/4672C02F2201/46165
Inventor 秦微谢陈鑫赵慧李肖琳钱光磊王震滕厚开张艳芳
Owner CNOOC TIANJIN CHEM RES & DESIGN INST
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