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A kind of landfill leachate treatment method

A technology for landfill leachate and a treatment method, which is applied in the field of landfill leachate treatment, can solve problems such as the replacement cost of secondary pollution membranes, and achieve the effects of good denitrification effect, high treatment load, and stable effluent quality.

Active Publication Date: 2015-11-04
WUHAN AILV ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above defects or improvement needs of the prior art, the present invention provides a landfill leachate treatment method, the purpose of which is to degrade the landfill leachate through the combined treatment of the two-stage Fenton advanced oxidation process and the aerated biological fluidization tank process The organic pollutants in the waste water can meet the emission standards, thus solving the technical problems of secondary pollution caused by membrane permeation treatment of landfill leachate and high cost of membrane replacement.

Method used

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  • A kind of landfill leachate treatment method

Examples

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Comparison scheme
Effect test

Embodiment 1

[0048] A method for treating landfill leachate, comprising the following steps:

[0049] (1) One-stage Fenton Advanced Oxidation Process:

[0050] The biochemically treated landfill leachate was adjusted to a pH value of 4, connected to a primary Fenton reaction tank, added with a primary Fenton reagent, and reacted for 18 hours to obtain effluent from a primary Fenton advanced oxidation process.

[0051] The specific steps of the biochemical treatment of landfill leachate are: the leachate is pretreated to remove part of the suspended solids and COD, and then the anaerobic reactor and the anaerobic / aerobic process are used for biochemical treatment to remove most of the COD and ammonia nitrogen. , to meet the adaptation conditions of the subsequent process.

[0052] Add the primary Fenton's reagent so that 2.75kg H is added per ton of water 2 o 2 and 5.00kg FeSO 4 .

[0053] The effluent standard of the first-stage Fenton advanced oxidation process is: the chemical oxyge...

Embodiment 2

[0069] A method for treating landfill leachate, comprising the following steps:

[0070] (1) One-stage Fenton Advanced Oxidation Process:

[0071] The biochemically treated landfill leachate was adjusted to a pH value of 3.5, connected to a primary Fenton reaction tank, added with a primary Fenton reagent, and reacted for 20 hours to obtain effluent from a primary Fenton advanced oxidation process.

[0072] The specific steps of the biochemical treatment of landfill leachate are: the leachate is pretreated to remove part of the suspended solids and COD, and then the anaerobic reactor and the anaerobic / aerobic process are used for biochemical treatment to remove most of the COD and ammonia nitrogen. , to meet the adaptation conditions of the subsequent process.

[0073] Add the primary Fenton's reagent so that 3.00kg H is added to each ton of water 2 o 2 and 5.60kg FeSO 4 .

[0074] The effluent standard of the first-stage Fenton advanced oxidation process is: the chemical...

Embodiment 3

[0090] A method for treating landfill leachate, comprising the following steps:

[0091] (1) One-stage Fenton Advanced Oxidation Process:

[0092]The biochemically treated landfill leachate was adjusted to a pH value of 3, connected to a primary Fenton reaction tank, added with a primary Fenton reagent, and reacted for 22 hours to obtain effluent from a primary Fenton advanced oxidation process.

[0093] The specific steps of the biochemical treatment of landfill leachate are: the leachate is pretreated to remove part of the suspended solids and COD, and then the anaerobic reactor and the anaerobic / aerobic process are used for biochemical treatment to remove most of the COD and ammonia nitrogen. , to meet the adaptation conditions of the subsequent process.

[0094] Add the primary Fenton's reagent so that 3.30kg H is added to each ton of water 2 o 2 and 6.25kg FeSO 4 .

[0095] The effluent standard of the first-stage Fenton advanced oxidation process is: the chemical ox...

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Abstract

The invention discloses a landfill leachate treatment method. The landfill leachate treatment method comprises (1) a primary Fenton advanced oxidation process, (2) a primary aerated biological fluidized tank process, (3) a secondary Fenton advanced oxidation process, and (4) a secondary aerated biological fluidized tank process. The landfill leachate treatment method is simple to operate without complex system control; due to the adoption of a degradation method, no concentrated water is generated to cause secondary pollution; meanwhile, a membrane system does not need to be replaced so that the treatment cost can be greatly reduced.

Description

technical field [0001] The invention belongs to the field of sewage treatment, and more specifically relates to a method for treating landfill leachate. Background technique [0002] Landfill leachate refers to the moisture contained in the garbage itself in the landfill, the rain and snow water and other moisture entering the landfill, deducting the saturated water holding capacity of the garbage and the covering soil, and passing through the garbage layer and the covering soil. A high concentration of organic wastewater. The treatment of leachate in urban waste landfills has always been a very difficult problem in the design, operation and management of landfills. At present, the advanced treatment process of domestic landfill leachate is mainly based on membrane filtration, and its principle is mainly to meet the requirements of different specifications by using filter membranes with different pore sizes. [0003] However, the process of membrane filtration is a physica...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14
CPCC02F1/56C02F1/66C02F1/722C02F1/725C02F3/085C02F9/00C02F2305/026
Inventor 龙纯
Owner WUHAN AILV ENVIRONMENTAL PROTECTION TECH CO LTD
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