Sewage treatment method of magnetic three-phase Fenton reactor and equipment thereof

A kind of sewage treatment equipment and Fenton reaction technology, which is applied in the field of sewage treatment equipment and magnetic three-phase Fenton reactor sewage treatment, can solve the problem of large demand for acid-base chemicals, high energy consumption of Fenton reactor, and catalyst catalysis. Low efficiency and other problems, to achieve the effect of easy storage and transportation, not easy to deteriorate, and prolong life

Pending Publication Date: 2018-03-23
王黎明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at a series of problems in the prior art, such as large energy consumption of the Fenton reactor, low catalytic efficiency of the catalyst, unstable effluent quality, large demand for iron salts, hydrogen peroxide, acid-base agents, and large sludge production, the purpose of the present invention is to It is to provide a sewage treatment method of a magnetic three-phase Fenton reactor, which is easy to operate and easy to operate, can effectively treat refractory organic waste water, reduces sewage COD, removes sewage chroma, and has low sludge output

Method used

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  • Sewage treatment method of magnetic three-phase Fenton reactor and equipment thereof
  • Sewage treatment method of magnetic three-phase Fenton reactor and equipment thereof
  • Sewage treatment method of magnetic three-phase Fenton reactor and equipment thereof

Examples

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Embodiment 1

[0038] A kind of sewage treatment method of magnetic three-phase Fenton reactor, its step is:

[0039] (A) Sewage enters the bottom of the reactor from the water inlet, and the oxidant enters the bottom of the reactor through the flow meter by the first dosing pump, and the second dosing pump is a sulfuric acid dosing pump; the agitator arranged at the bottom of the reactor , Under the hydraulic action of the aeration system and the reflux pump, the sewage and oxidant entering the bottom of the reactor enter the reaction zone after being fully mixed; providing a good pre-mixing effect for the Fenton reaction.

[0040] (B) After the solution is mixed, it enters the Fenton reaction zone after uniform water distribution in the water inlet zone for Fenton reaction. In the reaction zone of the Fenton catalyst, the pH of the zone is controlled at 1.5 or 2 or 3 or 4 or 4.5, which meets the reaction acidic environment requirement of the Fenton reaction. Sulfuric acid is added to the ...

Embodiment 2

[0044] The difference between this embodiment and embodiment 1 is that the flow rate of the reflux pump is 1-10 times of the influent flow rate, and the sewage returned to the reactor dilutes the raw water, increases the load on the reactor, and makes the use of Fenton's reagent The efficiency is improved, and the iron-based catalyst is composed of iron: carbon: copper = 70-90:6-10:4-10, which can be used more fully. Other steps and parameters are the same as in Example 1. Taking flax wastewater as an example, the COD removal rate reaches about 70%, while the chromaticity is reduced to 1-5 times.

[0045] Other implementation steps are the same as in Example 1.

Embodiment 3

[0047] The difference between this embodiment and embodiment 1 is that the dosage of hydrogen peroxide is selected to be 100-1000ml / L according to different influent water quality. For example, for printing and dyeing wastewater, the dosage of hydrogen peroxide is 800ml / L; for methyl orange wastewater, the dosage of hydrogen peroxide is 300mg / L. The hydrogen peroxide enters the Fenton reaction zone after being mixed with the sewage in the dosing pipeline, and after contacting with the Fenton catalyst, a heterogeneous Fenton reaction occurs inside the Fenton reaction zone to degrade the sewage. In 30 minutes, the COD removal rate of printing and dyeing wastewater can reach 80%; the COD removal rate of methyl orange can reach 90%.

[0048] Other implementation steps are the same as in Example 1.

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Abstract

The invention discloses a sewage treatment method of a magnetic three-phase Fenton reactor and equipment thereof. The sewage treatment method comprises the following steps: (A), sewage to be treated enters the bottom of a reactor through a water inlet hole, and the sewage to be treated is mixed with hydrogen peroxide at the bottom of the reactor; (B), after mixing, the mixed solution undergo uniform water distribution in a water intake area and then enters a Fenton reaction area to undergo a Fenton reaction, and iron mud sediment and carrier particles generated during the reaction process enter a water production area under the action of current; and (C), gas generated by a reaction at the top of the water production area is discharged out of the reactor through an exhaust valve at the topof the water production area. The equipment of the magnetic three-phase Fenton reactor is composed of a reactor, a water intake area, a Fenton reaction area, a water outlet area, a stirring device, areflux pump, a pH monitor, an exhaust valve, a return pipe, a support, aeration equipment, an aeration disc, an air compressor, a flowmeter, a sewage intake pump, a dosing pump and the like. According to the invention, hardly-degradable organic wastewater can be treated effectively, and chroma of sewage is removed. The equipment of the invention has a simple structure and is convenient to use. Bythe sewage treatment method and the equipment, use efficiency of a catalyst is raised, and sedimentation of iron mud is reduced.

Description

technical field [0001] The invention belongs to the field of advanced treatment of industrial sewage, and more specifically relates to a sewage treatment method of a magnetic three-phase Fenton reactor, and also relates to equipment for sewage treatment of a magnetic three-phase Fenton reactor. Background technique [0002] Toxic organic pollutants in heavily polluting industries such as papermaking, printing and dyeing, pharmaceuticals, and electroplating have the characteristics of poor biodegradability, high concentration, refractory degradation, high toxicity, and difficult advanced treatment and recycling technologies, lacking mature, effective and economical treatment method. Among the methods of advanced wastewater treatment and reuse technology to remove ecology, advanced oxidation technology can effectively reduce the COD of industrial wastewater. The Fenton reagent in advanced oxidation technology can oxidize almost all refractory organic substances that cannot be ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72C02F1/76
CPCC02F1/722C02F1/725C02F1/76C02F2201/002C02F2305/026
Inventor 王黎明王黎伟刘安明
Owner 王黎明
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