An electric fenton device for treating organic wastewater

A technology for organic wastewater and drainage pipes, applied in water/sewage treatment, oxidized water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of low operating costs and ineffective effects, and achieve low operating costs Effect

Inactive Publication Date: 2011-12-14
WUHAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Industrial enterprises generally use biological methods to degrade organic matter in water. The advantages of biological ...

Method used

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  • An electric fenton device for treating organic wastewater
  • An electric fenton device for treating organic wastewater
  • An electric fenton device for treating organic wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Use dilute sulfuric acid solution to adjust the pH of the solution to 3, and the area of ​​the activated carbon fiber as the cathode is 500cm 2 , the flow meter controls the aeration rate of the air pump to 300mL / min, and the output voltage of the DC stabilized power supply is 15V. According to the titanium salt colorimetric method in the national standard GB / T23499-2009, the hydrogen peroxide concentration in the water is measured, and the sample is analyzed every 15 minutes. The concentration of hydrogen peroxide in the solution is 18.857mg / L, 25.853mg / L, 31.826mg / L, 36.519mg / L, 39.164mg / L, 40.017mg / L, 41.553mg / L respectively until 120min and 41.724mg / L, the concentration of hydrogen peroxide in the solution increases with time, and after increasing to a certain concentration, the concentration of hydrogen peroxide tends to be stable.

Embodiment 2

[0032] Prepare the initial concentration of phenol as 100mg / L, adjust the pH of the solution to 3 with dilute sulfuric acid solution, and use activated carbon fiber as the cathode area of ​​500cm 2 , the concentration of ferrous ions in the solution is 0.15mmol / L, the aeration rate of the air pump controlled by the flowmeter is 300mL / min, and the output voltage of the DC stabilized power supply is 9V, 12V, and 15V, and it is determined by high performance liquid chromatography The concentration of phenol in the solution was sampled and analyzed every 20 minutes until 120 minutes, and the removal rate of phenol was shown in Table 1.

[0033] Table 1 Variation of phenol removal rate with time at different voltages

[0034]

[0035] It can be seen from Table 1 that the removal rate of phenol increases with the gradual increase of voltage. When the voltage is 15V, the removal rate of phenol reaches 84% ​​after electrolysis for 120 min.

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PUM

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Abstract

The invention relates to an electric Fenton device for treating organic waste water, which comprises a reactor, which is a vertical container with an open top, and the cathode and anode of the reactor are connected with a DC stabilized voltage power supply; it also includes a storage tank for storing organic waste water, through The constant flow pump is connected to the bottom of the reactor; it also includes an air pump, the air output by the air pump passes through the gas flow meter, and enters the reactor from the top or bottom of the reactor; it also includes an external drain pipe, located on the upper part of the reactor, for processing Good clean water flows out from the outer drain. The cathode of the reactor uses activated carbon fiber, and the activated carbon fiber is fixed on the lead-antimony alloy wire and installed on the upper part of the reactor. Due to the adoption of the above structure, the present invention has simple structure, convenient operation and reliable operation, and can adjust the voltage, aeration rate and cathode area of ​​the device according to the water quality of the influent to make the effluent quality meet the national wastewater discharge standard.

Description

technical field [0001] The invention relates to a technology for treating organic wastewater, in particular to an electric Fenton device for treating organic wastewater. Background technique [0002] At present, the number and types of refractory organic compounds in wastewater are increasing day by day, and their harm is becoming more and more serious, which has become the focus of water pollution control. Industrial enterprises generally use biological methods to degrade organic matter in water. The advantages of biological methods are low operating costs, but the effect of treating wastewater containing biodegradable organic compounds is not obvious. The advanced oxidation technology based on the generation of hydroxyl radicals has many advantages in the treatment of refractory organic compounds. Among them, the electro-Fenton method has a stronger ability to oxidize nascent hydrogen peroxide and a faster reaction speed, which can avoid the danger of hydrogen peroxide sto...

Claims

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Application Information

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IPC IPC(8): C02F1/461C02F1/72
Inventor 于萍罗运柏王光普林言闻
Owner WUHAN UNIV
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