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Integrated heterogeneous baffled Fenton continuous reactor

A technology of baffles and reactors, applied in the field of integrated baffles Fenton strong oxidation treatment device, can solve the problems of cumbersome catalyst preparation methods, poor operability and economy, increased investment and operating costs, and achieve Improve the treatment effect and the efficiency of chemical use, reduce the amount of less iron-containing sludge produced, and reduce the effect of chemical consumption

Active Publication Date: 2014-04-30
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN1179889C proposed to introduce electrochemistry into the Fenton system, and use the flat plate reflux electrolysis method to improve the Fenton effect, but an additional electrolytic reaction cell is required, and the investment and operating costs will increase
This type of method is to immobilize iron ions, which can avoid the chemical reagents and labor costs required to remove iron after degrading organic matter, but the catalyst preparation method is cumbersome, and the operability and economy are not good.

Method used

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  • Integrated heterogeneous baffled Fenton continuous reactor

Examples

Experimental program
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Effect test

Embodiment 1

[0037] The integrated baffle plate Fenton continuous reactor device is used to treat the biochemically treated effluent of a pulp and papermaking wastewater with a COD of 190mg / L. The device includes the following process steps:

[0038] 1. The wastewater to be treated after biochemical treatment of pulping and papermaking is pumped into the acid adding tank with a pump. Turn on the acid adding device 1, add sulfuric acid to the front end of the acid adding pool 7, adjust the pH to about 3.0, use the ferrous adding device 2 to add ferrous sulfate 60 mg / L to the ferrous adding pool 8, and enter the Fenton main reaction pool 9 end, through the H 2 o 2 Dosing device 3 adds 300mg / L H 2 o 2 , and reacted in Fenton main reaction tank 9 for 30 minutes. After the reaction is complete, it enters the alkali-adding tank 10, and uses the alkali-adding device 4 to add NaOH to adjust the pH to 9.0. After adding PAM to the front section of the PAM-adding tank 11 for flocculation, it flow...

Embodiment 2

[0043] The integrated baffle plate Fenton continuous reactor device is used to treat the biochemically treated effluent of a certain chemical wastewater with a COD of 520mg / L. The device includes the following process steps:

[0044] 1. The chemical wastewater to be treated is pumped into the acid adding pool after biochemical treatment. Turn on the acid adding device 1, add sulfuric acid to the front end of the acid adding pool 7, adjust the pH to about 3.0, use the ferrous adding device 2 to add ferrous sulfate 150 mg / L to the ferrous adding pool 8, and enter the Fenton main reaction pool 9 end, through the H 2 o 2 Dosing device 3 adds 850mg / LH 2 o 2 , and reacted in Fenton main reaction tank 9 for 45 minutes. After the reaction is complete, it enters the alkali-adding tank 10, and uses the alkali-adding device 4 to add NaOH to adjust the pH to 9.0. After adding PAM to the front section of the PAM-adding tank 11 for flocculation, it flows into the sedimentation tank 12. ...

Embodiment 3

[0049] The integrated baffle plate Fenton continuous reactor device is used to treat the biochemically treated effluent of a palm oil factory with a COD of 950mg / L. The device includes the following process steps:

[0050] 1. The remaining sludge to be treated is pumped into the acid adding tank with a pump. Turn on the acid adding device 1, add sulfuric acid to the front end of the acid adding pool 7, adjust the pH to about 3.0, use the ferrous adding device 2 to add ferrous sulfate 250mg / L to the ferrous adding pool 8, and enter it at the entrance of the Fenton main reaction pool 9 end, through the H 2 o 2 Dosing device 3 adds 2125mg / LH 2 o 2 , and reacted in Fenton main reaction tank 9 for 60 minutes. After the reaction is complete, it enters the alkali-adding tank 10, and uses the alkali-adding device 4 to add NaOH to adjust the pH to 9.0. After adding PAM to the front section of the PAM-adding tank 11 for flocculation, it flows into the sedimentation tank 12.

[0051...

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Abstract

The invention relates to an integrated heterogeneous baffled Fenton continuous reactor. According to the integrated heterogeneous baffled Fenton continuous reactor, a baffled Fenton reactor with a natural flow pushing structure is applied, multipoint, respective and continuous agent dosing is adopted to carry out chemical reaction, and an inert carrier is introduced. Compared with the prior art, the reactor has the advantages of simple structure, high agent use ratio, lowered system energy consumption, small sulfate radical use amount and the like, and the adverse effect on a subsequent anaerobic digestion system can be reduced.

Description

technical field [0001] The invention belongs to the field of environmental engineering and water treatment engineering, and in particular relates to an integrated baffle plate Fenton strong oxidation treatment device, which can be used for pretreatment or advanced treatment of wastewater treatment. The reactor can realize continuous operation and is convenient for matching with other systems use. Background technique [0002] In 1894, the British H.J.H.Fenton discovered the use of Fe 2+ / H 2 o 2 The system can oxidize various organic compounds. In memory of him, later generations called the combination of ferrous salt and hydrogen peroxide Fenton's reagent, which can effectively oxidize and remove refractory organic matter that cannot be removed by traditional wastewater treatment technology, and its essence is Fe 2+ catalytic decomposition of H 2 o 2 , to generate strong oxidizing hydroxyl radicals (OH), which can interact with most organic substances to degrade them,...

Claims

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Application Information

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IPC IPC(8): C02F1/72
Inventor 王进邱江平李旭东李银生
Owner SHANGHAI JIAO TONG UNIV
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