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Method for treating garbage percolate by using Fenton reagent

A technology of landfill leachate and hydrogen peroxide, which is applied in the direction of oxidized water/sewage treatment, etc., can solve the problems of high cost of leachate, difficult to popularize and adopt, and difficult to treat biodegradable organic waste water of leachate, etc., and achieve the treatment effect. Good, small footprint, convenient operation and management

Inactive Publication Date: 2011-09-21
任东强
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  • Summary
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is difficult to treat organic wastewater with poor biodegradability such as leachate by traditional biological treatment technology of leachate. However, the cost of physical and chemical treatment of leachate is extremely high, and it is difficult to promote and adopt it on a large scale in most cities in my country.

Method used

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Embodiment Construction

[0011] Add ferrous sulfate heptahydrate and hydrogen peroxide to the landfill leachate to form Fenton's reagent in the leachate to perform Fenton oxidation on the pollutants in the leachate. The dosage of hydrogen peroxide and ferrous sulfate heptahydrate is added to the landfill leachate according to the ratio that the molar ratio of hydrogen peroxide and ferrous ions is 6.5, and the mass ratio of hydrogen peroxide and sewage COD is 3. Then use a stirrer to stir the landfill leachate for 1 hour, and then react for 3 hours to complete the Fenton oxidation.

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Abstract

The invention relates to a Fenton reagent oxidation method for treating garbage percolate, and belongs to the technical field of sewage treatment in the environmental engineering discipline. In order to fulfill the aim of making the garbage percolate reach the discharge standard, the method comprises the following steps of: adding a certain amount of ferrous sulfate and hydrogen peroxide into the garbage percolate, fully stirring and mixing for 1 hour, and performing Fenton oxidation for 3 hours, wherein the amount of the hydrogen peroxide and ferrous sulfate heptahydrate which are added into the garbage percolate is determined in a molar ratio of the hydrogen peroxide to ferrous iron ions of 6.5 and a mass ratio of the hydrogen peroxide to chemical oxygen demand (COD) of sewage of 3. The method can fulfill the aim of simply and efficiently treating the garbage percolate at low cost and has the advantages that the method is simple and practicable, low in cost and obvious in effect.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment in the discipline of environmental engineering, and in particular relates to a method for treating landfill leachate by using Fenton's reagent. Background technique [0002] Landfill leachate is recognized as one of the most difficult wastewater to treat in the world, and there is no mature, efficient and cheap leachate treatment process yet. It is difficult to treat organic wastewater with poor biodegradability such as leachate by traditional biological treatment technology of leachate. However, the cost of physical and chemical treatment of leachate is extremely high, and it is difficult to promote and adopt it on a large scale in most cities in my country. Therefore, the present invention adopts Fenton's reagent with strong oxidizing property to treat landfill leachate. Contents of the invention [0003] In the present invention, the technical route of oxidizing the pollutants in th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72
Inventor 任东强
Owner 任东强