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Device and method for treating organic wastewater by using three-dimensional fluidized bed electrochemical system

A three-dimensional fluidized bed, organic wastewater technology, applied in chemical instruments and methods, oxidized water/sewage treatment, separation methods, etc., can solve the problems of iron-containing sludge difficult to handle, secondary pollution, etc., and achieve high-efficiency purification of organic wastewater. , to achieve the effect of recycling and increasing the specific surface area

Pending Publication Date: 2021-11-05
CHANGCHUN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] It is worth pointing out that although the Fenton / Electro-Fenton technology has a faster pollutant removal rate, its reaction can only be carried out under acidic conditions due to the addition of iron, and the large amount of iron-containing sludge produced after the reaction is difficult to treat , easy to cause secondary pollution

Method used

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  • Device and method for treating organic wastewater by using three-dimensional fluidized bed electrochemical system
  • Device and method for treating organic wastewater by using three-dimensional fluidized bed electrochemical system

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Three-dimensional electrochemical experiment: Add 120mL of 200mg / L methyl orange wastewater (COD value 1508mg / L) and 2.4g of activated carbon particles into the above reactor from the right inlet; adjust the temperature of the reactor through the temperature control device to 25°C; the air flow rate is adjusted to 1.0L / min; the voltage is adjusted to 15V; every 5min is sampled and measured, and the water quality COD value after 30min treatment is 19mg / L, the COD removal rate is 98.7%, and the COD removal rate constant k 1 is 0.197.

[0026] Two-dimensional electrochemical experiment: Add 120mL of 200mg / L methyl orange wastewater (COD value 1508mg / L) into the above reactor from the right inlet; adjust the temperature of the reactor to 25°C through the temperature control device; The air flow rate is adjusted to 1.0L / min; the voltage is adjusted to 15V; every 5min is sampled and measured, and the water quality COD value after 30min treatment is 538mg / L, the COD removal ra...

Embodiment 2

[0030] Add 120mL of 200mg / L methyl orange wastewater (COD value 1508mg / L) and 2.4g of activated carbon particles into the above reactor from the right inlet; adjust the temperature of the reactor to 25°C through the temperature control device; air The flow rate was adjusted to 1.0L / min; the voltage was adjusted to 5V; after 30 minutes of reaction, the COD value of the treated water was determined to be 276mg / L, and the COD removal rate was 81.6%.

Embodiment 3

[0032] Add 120mL of 200mg / L methyl orange wastewater (COD value 1508mg / L) and 1.2g of activated carbon particles into the above reactor from the right inlet; adjust the temperature of the reactor to 25°C through the temperature control device; air The flow rate was adjusted to 1.0L / min; the voltage was adjusted to 15V; after 30 minutes of reaction, the COD value of the treated water was determined to be 72mg / L, and the COD removal rate was 95.2%.

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Abstract

The invention discloses a device and a method for treating organic wastewater by a three-dimensional fluidized bed electrochemical system, and belongs to the technical field of industrial wastewater treatment and cleaning. The device is a fluidized bed three-dimensional electrochemical reactor; and active carbon particles are used as the third electrode. Under proper conditions, 98.7% of COD can be removed within 30 min during treatment of wastewater containing 200mg / L of methyl orange dye, and the granular activated carbon has excellent reusability. According to the technology, chemical auxiliaries are not used in the wastewater treatment process, only electricity and air are consumed, the technology belongs to the clean water treatment technology, and the device and the technology are further suitable for treatment of other industrial wastewater containing organic pollutants.

Description

technical field [0001] The invention relates to the technical field of electrochemical oxidation industrial wastewater treatment, in particular to a device and method for treating organic wastewater with a three-dimensional fluidized bed electrochemical system coupled with adsorption and electrochemical oxidation. Background technique [0002] The complexity and persistence of pollutants contained in industrial wastewater make a single treatment method insufficient to meet the increasingly stringent laws and regulations on wastewater discharge. For many years, combined treatment methods have been used to increase the efficiency of wastewater treatment processes. [0003] For example, Liang Canzeng et al. can significantly improve the treatment efficiency of high-concentration dye wastewater by combining coagulation / flocculation (CF) and nanofiltration (NF), and the 85% dye removal rate of single flocculation treatment is increased to 100% ( Liang Canzeng, Sun Shipeng, et al...

Claims

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Application Information

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IPC IPC(8): C02F1/461C02F1/72C02F1/469C02F101/30
CPCC02F1/4672C02F1/469C02F2101/30C02F2303/16
Inventor 张龙刘向京
Owner CHANGCHUN UNIV OF TECH
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