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Ultrasonic-assisted mineralized refuse participating method for treating organic waste water by homogeneous Fenton

A technology for mineralizing garbage and organic wastewater, applied in the field of environmental pollution control, can solve the problems of complex synthesis process and expensive treatment efficiency of carriers, and achieve the effects of large specific surface area, promotion of cation exchange, strong adsorption and exchange capacity

Active Publication Date: 2012-10-31
江阴智产汇知识产权运营有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a homogeneous Fenton treatment method for organic waste water with the participation of ultrasonic-assisted mineralized garbage in order to overcome the shortcomings of complex synthesis process and expensive carrier of heterogeneous Fenton catalysts in the prior art. method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Add FeCl directly to 1L of wastewater with a concentration of 30mg / L Golden Orange II 2 、H 2 o 2 And after 15 years of landfilling, crushing, and mineralized waste passing through a 50-mesh sieve, Fe 2+ :H 2 o 2 =500:1 (molar ratio), the molar number of ferrous ion charges is 50% of the cation exchange capacity of the mineralized waste added, the solid-liquid ratio of the mineralized waste and wastewater is 1:5000 (mass ratio), and the pH value is adjusted to 6. Put the waste water into an ultrasonic reactor, apply ultrasonic waves with a frequency of 120KHz and a power of 1200W, perform ultrasonic treatment for 1min, and stir at the same time. After the reaction is completed, precipitate, solid-liquid separation, and measure the removal rate of pollutants obtained 98.7%;

[0024] The separated solid can continue to be recycled, and the separated solid is added to the same amount of waste water, and then the same amount of H 2 o 2 , adjust the pH value to 6, appl...

Embodiment 2

[0027] Add FeSO directly to 1L acid red wastewater with a concentration of 30mg / L 4 、H 2 o 2 And after 8 years of landfilling, crushing, and mineralized waste passing through a 100-mesh sieve, Fe 2+ :H 2 o 2 =1000:1 (molar ratio), the molar number of ferrous ion charges is 100% of the cation exchange capacity of the mineralized waste added, the solid-liquid ratio of the mineralized waste and wastewater is 1:500 (mass ratio), and the pH value is adjusted to 5. Put the wastewater into an ultrasonic reactor, apply ultrasonic waves with a frequency of 20kHz and a power of 100W, and perform ultrasonic treatment for 5 minutes for purification, while stirring, after the reaction is completed, precipitate, solid-liquid separation, and measure the removal rate of pollutants obtained 96.2%;

[0028] The separated solid can continue to be recycled, and the separated solid is added to the same amount of waste water, and then the same amount of H 2 o 2 , adjust the pH value to 5, ap...

Embodiment 3

[0031]Add FeCl directly to 1 L of phenol wastewater with a concentration of 30 mg / L 2 、H 2 o 2 And after 15 years of landfilling, crushing, and mineralized waste passing through a 100-mesh sieve, Fe 2+ :H 2 o 2 =800:1 (molar ratio), the molar number of ferrous ion charges is 100% of the cation exchange capacity of the mineralized waste added, the solid-liquid ratio of the mineralized waste and waste water is 1:1000 (mass ratio), and the pH value is adjusted to 6. Put the waste water into an ultrasonic reactor, apply ultrasonic waves with a frequency of 20kHz and a power of 1000W, perform ultrasonic treatment for 3 minutes, and stir at the same time. After the reaction is completed, precipitate, solid-liquid separation, and measure the removal rate of pollutants obtained 99.1%;

[0032] The separated solid can continue to be recycled, and the separated solid is added to the same amount of waste water, and then the same amount of H 2 o 2 , adjust the pH value to 6, apply ...

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Abstract

The invention provides an ultrasonic-assisted mineralized refuse participating method for treating organic waste water by homogeneous Fenton. The method includes the following steps of (1) directly adding a ferrous ion salt, hydrogen peroxide (H2O2) and mineralized refuse powders into the waste water, and adjusting the potential of hydrogen (pH) value to 5 to 6; and (2) adding the waste water into an ultrasonic reactor, performing an ultrasonic action for 1 to 5 minutes, then performing a purification treatment, simultaneously stirring, precipitating after reaction, and performing a solid-liquid separation to complete the waste water treatment. The ultrasonic-assisted mineralized refuse participating method for treating the organic waste water by the homogeneous Fenton has the advantages that cumbersome synthetic steps of prior load type iron oxide catalysts are omitted, besides, the porosity of the mineralized refuse is high, the specific surface area is large, the mineralized refuse is low in cost and easy to obtain, a cation exchange characteristic of the mineralized refuse is utilized, iron ions can be exchanged to the surface of the mineralized refuse while the iron ions exert an catalytic action, the iron ions are prevented from losing, the iron ions in water are prevented from being polluted, the possibility of reutilization is improved, and the reaction can be completed within a short time by the aid of a dispersing function and a cavitation characteristic of ultrasonic waves.

Description

technical field [0001] The invention relates to the technical field of environmental pollution control, in particular to a method for homogeneous Fenton treatment of organic wastewater with the participation of ultrasonic-assisted mineralized garbage. Background technique [0002] Fenton's reagent generally refers to Fe 2+ and H 2 o 2 The oxidation system constituted, invented by French scientist H.J.H.Fenton in 1894, is a chemical oxidation water treatment technology that does not require high temperature and high pressure and has simple equipment. Early Fenton reagents were mainly used in organic analytical chemistry and organic synthesis reactions. In 1964, Eisenhouser first used Fenton reaction as a wastewater treatment technology, and succeeded in phenol and alkylbenzene wastewater treatment experiments. The traditional Fenton reaction will cause the loss of iron ions. In order to solve this problem, the heterogeneous Fenton reaction has been gradually developed. Thi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72C02F1/36C02F1/42C02F101/30
Inventor 马建锋李良银姚超李定龙
Owner 江阴智产汇知识产权运营有限公司
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