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Three-dimensional electrode reactor and method for processing chlorobenzene waste water by using the same

A technology of three-dimensional electrodes and reactors, applied in chemical instruments and methods, water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of microbial influence, high toxicity of chlorobenzene, low treatment efficiency, etc., and achieve high efficiency Degradation, increased surface area, strong controllability

Inactive Publication Date: 2008-05-28
JIANGSU PROVINCIAL ACAD OF ENVIRONMENTAL SCI
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  • Summary
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

The biochemical method has the advantage of low cost, but due to the high toxicity of chlorobenzene, which has a great impact on microorganisms, the treatment cycle is very long
This method has a good effect on the treatment of chlorobenzene wastewater with low concentration, but has a low treatment efficiency for wastewater with high concentration and strong toxicity.

Method used

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  • Three-dimensional electrode reactor and method for processing chlorobenzene waste water by using the same
  • Three-dimensional electrode reactor and method for processing chlorobenzene waste water by using the same

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Effect test

Embodiment 1

[0026] As shown in Fig. 2, the three-dimensional electrode reactor 4 of the present invention is a closed cylindrical container, the center of the bottom is provided with a columnar graphite anode, the sidewall is a stainless steel cathode, and the activated carbon of the antimony dioxide catalyst is filled between the columnar graphite and the sidewall. The graphite and the side wall are connected to a DC stabilized power supply. Chlorobenzene wastewater can be injected into the three-dimensional electrode reactor 4 from the raw water tank 1 through the water inlet pump 2 and the glass rotameter 3. The DC stabilized power supply 6 controls the voltage and current of the three-dimensional electrode reactor 4, and the valve 7 can control the waste water During the residence time in the three-dimensional electrode reactor 4, the treated tail water is discharged into the effluent storage tank 5, and then it can be directly discharged or further processed for biochemical advanced t...

Embodiment 2

[0028] Influent chlorobenzene concentration is 100mg / L, influent toxicity EC 50 is 10.98%, the control current intensity is 1.0A, and the residence time is 120min. After being degraded by the three-dimensional electrode reactor, the main components of the effluent are butenedioic acid and oxalic acid, the concentration of chlorobenzene is 4.5mg / L, and the relative opacity is 5.3%. The degradation water is low in toxicity.

Embodiment 3

[0030] Influent chlorobenzene concentration is 112.5mg / L, influent toxicity EC 50 is 11.68%, the control current intensity is 2.0A, and the residence time is 60min. After being degraded by the three-dimensional electrode reactor, the main components in the effluent are butenedioic acid and oxalic acid, the concentration of chlorobenzene is 1.5mg / L, and the relative opacity is 0. The effluent is non-toxic.

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Abstract

The invention discloses a three-dimension electrode reactor, comprising a close vessel; the bottom inside the vessel is provided with a cylindrical graphite anode, the side wall of the vessel is a stainless steel cathode, conductive particles and catalyst are filled and a DC stabilized voltage supply is connected between the cylindrical graphite and the side wall. A method for treating chlorobenzene wastewater using the three-dimension electrode is that: the chlorobenzene wastewater is led into the three-dimension electrode reactor and the current is set between 1 to 5A, the staying time of the wastewater in the three-dimension electrode reactor is 30 to 120min and the tail wastewater after the reaction can be directly discharged or further biochemically treated. The concentration of chlorobenzene and the toxicity of the wastewater can be reduced at the same time through the device and the method of the invention.

Description

technical field [0001] The invention relates to a waste water treatment device and method, in particular to a three-dimensional electrode reactor and a method for treating chlorobenzene waste water using the same. Background technique [0002] The treatment of refractory organic matter in the environment has been a difficult point in environmental governance for a long time. Chlorobenzene aromatic compounds are typical representatives, which are listed in Jiangsu Province's "Priority Organic Pollutants List" and the National Water Priority Control Pollutants "Black list” and the “black list” of 129 EPA priority pollutants in the United States. Polychlorobenzene products are mainly used in coatings, dyes, insecticides, insect repellents, medicines, pesticides, moth-proof, solvents, organic synthesis and other fields. Among them, chlorobenzene mainly comes from industries such as textiles, pharmaceuticals, laundry, leather tanning and finishing, and steel. Chlorobenzene comp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461C02F101/36
Inventor 夏明芳陆继来张利民王志良邱阳张磊王春
Owner JIANGSU PROVINCIAL ACAD OF ENVIRONMENTAL SCI
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