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Two-stage magnetic induction-enhanced Fenton reaction sewage treatment device and sewage treatment method thereof

A sewage treatment device and magnetic induction technology, which are applied in the fields of oxidized water/sewage treatment, magnetic field/electric field water/sewage treatment, water/sewage treatment, etc. Improve removal effect, enhance reaction rate, reduce the effect of iron sludge production

Inactive Publication Date: 2019-04-09
YANGTZE UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the effect of magnetic force alone on the treatment of pollutants in sewage is poor. Magnetic force can only change the physical state of water molecules in sewage. It cannot achieve good results for the direct removal of pollutants such as COD and ammonia nitrogen. However, Fenton method is used for treatment. For the use of more chemicals, more iron sludge is produced, and it cannot be reused after use, which is easy to cause waste
[0006] This shows that magnetization treatment is effective for sewage modification, but it is not suitable for the removal of pollutants in sewage, and the Fenton method is better, but the output of iron sludge is large and expensive
The problems existing in the prior art mainly contain the following aspects: 1. The Fenton method uses relatively high medicament costs, produces more iron sludge, and the added medicament cannot be recycled; 2. The reaction degree of the Fenton method is difficult to control, and due to hydrogen peroxide Volatile, it is not suitable to add directly at one time; 3. The magnetic field will have an effect when it reaches the threshold value. When using it, a certain magnetic field adjustment device is required to determine the most suitable magnetic field strength; 4. At present, magnetic water treatment is mainly suitable for magnetic flocculation, and does not involve Magnetically strengthened advanced oxidation content

Method used

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  • Two-stage magnetic induction-enhanced Fenton reaction sewage treatment device and sewage treatment method thereof
  • Two-stage magnetic induction-enhanced Fenton reaction sewage treatment device and sewage treatment method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] 1) The power supply 7 of the magnetic induction coil 8 is not connected, so that the surroundings of the pool body 1 are in a state of no magnetic field;

[0042] 2) Adjust the pH value of the pretreated water with a COD value of 3410mg / L to 3.15, and add Fe 2+ After the nano-magnetic powder is added, it is pumped into the pretreatment water inlet pipe 9 through the first dosing pump 6 and enters the spiral regulating pipe 4; the helical blade 4.1 is rotated, and the hydrogen peroxide is continuously pumped into the hydrogen peroxide dosing pipe 5 through the second dosing pump 6 to the spiral In the regulating pipe 4, the reaction obtains the first-stage magnetized sewage;

[0043] 3) The first-stage magnetized sewage in the spiral regulating pipe 4 gushes out from the water outlet 11 and enters the pool body 1 through the push of the spiral blade 4.1, and starts the several aeration pushing flow pipes 3 for aeration, and faces in the same direction The aeration holes...

Embodiment 2

[0048] 1) Turn on the power supply 7 of the magnetic induction coil 8, so that the cell body 1 is in a state surrounded by a magnetic field;

[0049] 2) Adjust the pH value of the pretreated water with a COD value of 3410mg / L to 3.05, and add Fe 2+ After the nano-magnetic powder is added, it is pumped into the pretreatment water inlet pipe 9 through the first dosing pump 6 and enters the spiral regulating pipe 4; the helical blade 4.1 is rotated, and the hydrogen peroxide is continuously pumped into the hydrogen peroxide dosing pipe 5 through the second dosing pump 6 to the spiral In the regulating pipe 4, the reaction obtains the first-stage magnetized sewage;

[0050] 3) The first-stage magnetized sewage in the spiral regulating pipe 4 gushes out from the water outlet 11 and enters the pool body 1 through the push of the spiral blade 4.1, and starts the several aeration pushing flow pipes 3 for aeration, and faces in the same direction The aeration holes 3.1 push the first-...

Embodiment 3

[0055] 1) Turn on the power supply 7 of the magnetic induction coil 8, so that the cell body 1 is in a state surrounded by a magnetic field;

[0056] 2) Adjust the pH value of the pretreated water with a COD value of 3410mg / L to 2.88, and add Fe 2+ After the nano-magnetic powder is added, it is pumped into the pretreatment water inlet pipe 9 through the first dosing pump 6 and enters the spiral regulating pipe 4; the helical blade 4.1 is rotated, and the hydrogen peroxide is continuously pumped into the hydrogen peroxide dosing pipe 5 through the second dosing pump 6 to the spiral In the regulating pipe 4, the reaction obtains the first-stage magnetized sewage;

[0057] 3) The first-stage magnetized sewage in the spiral regulating pipe 4 gushes out from the water outlet 11 and enters the pool body 1 through the push of the spiral blade 4.1. Insert the stirring rods of the two stirrers vertically into both sides of the tank body 1 for stirring, and keep the sewage in the tank ...

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Abstract

The invention provides a two-stage magnetic induction-enhanced Fenton reaction sewage treatment device. The two-stage magnetic induction-enhanced Fenton reaction sewage treatment device comprises a tank body, a magnetic induction coil on the outer side wall of the tank body, a spiral adjustment tube in the center of the tank, a spiral central column on the spiral adjustment tube, and a plurality of spiral blades on the spiral central column, wherein the bottom and middle of the spiral adjustment tube are respectively connected to a pretreatment water inlet pipe and a hydrogen peroxide chemicalfeed pipe; a water outlet in the top of the spiral adjustment tube is located in the tank body; a plurality of aeration plug flow tubes are arranged at one side of the interior of the tank body; anda water discharge pipe with a valve is arranged at the middle of one side wall of the tank body. The invention also provides a method of treating sewage by using the device. The device enhances the effect of Fenton reaction through a magnetic field, and achieves the purpose of promoting the degradation of pollutants such as COD (chemical oxygen demand) and ammonia nitrogen; the spiral adjustment tube and the aeration plug flow tube perform secondary adjustment and enhancement on the magnetic field to achieve the effects of adjusting the magnetic field strength, the Fenton reaction mixing degree and reaction time and remarkably improve the quality of sewage effluent quality; and nanometer magnetic powder serves as a provider of Fe2+ and can reduce the production of iron sludge.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a secondary magnetic induction enhanced Fenton reaction sewage treatment device and a sewage treatment method thereof. Background technique [0002] The magnetic field between the magnetic poles can realize the conversion of electromagnetic energy and mechanical energy, chemical energy and biological energy. Correspondingly produce mechanical effects, chemical effects, biological effects and nuclear magnetic resonance effects in the conversion process. Using these effects can better realize the magnetization treatment of sewage. The experimental results show that the magnetization treatment has effects on many physical and chemical properties of water (such as refractive index, electrical conductivity, dielectric constant, surface tension, viscosity and infrared absorption spectrum, etc.). influences. These effects indicate that magnetization treatment will change the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/48C02F1/72
CPCC02F1/485C02F1/722C02F1/725C02F2301/08C02F2201/483Y02W10/10
Inventor 戴捷兰天翔吴梦霞谢远莎汪冬芳刘喆
Owner YANGTZE UNIVERSITY
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