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Method for treating waste water through Fenton oxidation by utilizing ultrasonic catalysis

A Fenton oxidation and ultrasonic technology, applied in chemical instruments and methods, water/sewage treatment, water/sewage multi-stage treatment, etc., can solve problems such as insufficient utilization, save investment, speed up reaction efficiency, and improve reaction efficiency effect

Inactive Publication Date: 2015-03-04
SUZHOU FUQINUO WATER TREATMENT EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] Known existing technologies such as: Application No.: 201310678092.4 and 201210286680.9 respectively provide methods for ultrasonic and Fenton reaction synergistic treatment of wastewater, which is proposed in 201310678092.4 The Fenton reaction and the ultrasonic crushing reaction are carried out at the same time. The method proposed in the 201210286680.9 is to first add FeCl2 and H2O2 sub>Carry out Fenton oxidation, and then perform ultrasonic crushing reaction, but the above two technologies do not make full use of the large number of hydroxyl groups (OH-) and hydrogen radicals (H+) may have a promoting effect on the Fenton oxidation technology

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A method to use ultrasonic catalytic Fanton oxidation treatment wastewater, the specific steps are as follows: (1) Add a sufficient amount of activated carbon powder to the wastewater, which adds 0.7%of the weight of the waste water.Powder or cylindrical activated carbon powder; (2) After the active carbon powder adsorb a large amount of impurities in the water, filter the waste water and inject it into the ultrasonic reactor; 3 ; (4) After 20 minutes of reaction, add aslerate ion salt and H to the ultrasonic reactor 2 O 2 , Adjust the pH value to 3, the ferrous ion salt is FeCl 2 Or feeso 4 , The FE I put in 2+ H 2 O 2 The Moore is 800: 1, and stir the sewage; (5) After 2 hours, the precipitation is performed after the reaction is completed to separate the solid fluid and the removal rate of the pollutants obtained is 97.7%.deal with.

[0029] The solid obtained by isolated can be continued to be used, adding the separated solids to the same amount of wastewater, and the d...

Embodiment 2

[0032] A method to use ultrasonic catalytic Fanton oxidation treatment wastewater, the specific steps are as follows: (1) Add a sufficient amount of activated carbon powder to the wastewater, which adds 0.9%of the weight of the waste water.Powder or cylindrical activated carbon powder; (2) After the active carbon powder adsorb a large amount of impurities in the water, filter the waste water and inject it into the ultrasonic reactor; 3 ; (4) After 30 minutes of reaction, add aslerate ion salt and H to the ultrasonic reactor 2 O 2 , Adjust the pH value to 4, the ferrous ion salt is FeCl 2 Or feeso 4 , The FE I put in 2+ H 2 O 2 Moore is 900: 1, and stir at the same time; (5) After 2.5 hours, the reaction is completed to separate the solid fluid and the removal rate of the pollutant obtained by the measured liquid can be completed.

[0033] The solid obtained by isolated can be continued to be used, adding the separated solids to the same amount of wastewater, and the density of the...

Embodiment 3

[0036] A method to use ultrasonic catalytic Fanton oxidation treatment wastewater, the specific steps are as follows: (1) Add a sufficient amount of activated carbon powder to the wastewater, which adds 1.1%of the weight of the waste water.Powder or cylindrical activated carbon powder; (2) After the active carbon powder adsorb a large amount of impurities in the water, filter the waste water and inject it into the ultrasonic reactor; 3 ; (4) After 40 minutes of response, add sub -ion salt and H to the ultrasonic reactor 2 O 2 , Adjust the pH value to 5, the ferrous ion salt of the ferrous iron is FeCl 2 Or feeso 4 , The FE I put in 2+ H 2 O 2 The Moore is 1000: 1. Stir at the same time; (5) After 3 hours, the precipitation is performed after the response is completed to separate the solid fluid and the removal rate of the measured pollutants is 94.7%to complete the wastewater treatment.

[0037] The solid obtained by isolated can be continued to be used, adding the separated solid...

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Abstract

The invention relates to a method for treating waste water through Fenton oxidation by utilizing ultrasonic catalysis. The method comprises the following specific steps: (1) adding an enough amount of activated carbon powder into the waste water, wherein the addition amount of the activated carbon powder is 0.7 weight percent of the weight of the waste water; (2) after the activated carbon powder adsorbs a great number of impurities in the water, filtering the waste water, and then injecting the waste water into an ultrasonic reactor; (3) performing ultrasonic crushing reaction, wherein the sound energy density of an ultrasonic wave is 0.1-0.3 w / m<3>; (4) after the reaction is performed for 20-40 minutes, adding ferrous ion salt and H2O2 into the ultrasonic reactor, adjusting the PH value to be 3-5, and performing stirring; (5) after the stirring is performed for 2-3 hours and performing sedimentation after the reaction is completed to separate the solid liquid and treat waste water. According to the method, ultrasonic water purification and Fenton oxidation water purification are combined, so that the water purification efficiency is improved, and the water purification cost is reduced.

Description

Technical field [0001] The invention involves Fanton oxidation treatment wastewater, especially the method of treating wastewater catalyzed by ultrasonic catalytic wastewater. Background technique [0002] In the governance of water resources and environment, the wastewater can be processed by ultrasonic water. The empty effect of the ultrasonication can provide possibilities for the harmful organic matter in the degradation water, so as to achieve the purpose of the ultrasonic sewage treatment purpose.During the sewage treatment process, the empty effect of ultrasonic waves has strong degradation capabilities for organic matter, and the degradation speed is fast. The high energy generated by the collapse of ultrasonic vacuum bubbles is sufficient to break the chemical bond.OH - ) And hydrogen group (h + ), The oxidation reaction of the same organic matter can transform the harmful organic matter in the water body into CO 2 H 2 O, inorganic ions or organic substances that are vul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/08
CPCC02F9/00C02F1/281C02F1/36C02F1/66C02F1/722C02F1/725
Inventor 吴彦
Owner SUZHOU FUQINUO WATER TREATMENT EQUIP
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