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Advanced treatment method and system for landfill leachate evaporation effluent

A technology for landfill leachate and advanced treatment, which is applied in water/sewage treatment, multi-stage water/sewage treatment, neutralized water/sewage treatment, etc. It can solve the problems of high cooling energy consumption, unsatisfactory treatment effect, and temperature influence. , to achieve the effect of saving energy consumption, ideal processing effect and fast response speed

Pending Publication Date: 2021-03-26
大连广泰源环保科技有限公司
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to propose an advanced treatment method for the evaporated water of landfill leachate, aiming at the problems that the current deep treatment method of landfill leachate evaporated water consumes a lot of energy for cooling, is seriously affected by temperature, and has an unsatisfactory treatment effect. No need to cool down, not affected by temperature, ideal treatment effect

Method used

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  • Advanced treatment method and system for landfill leachate evaporation effluent

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Embodiment 1

[0028] This embodiment discloses a high-temperature catalytic oxidation advanced treatment system for evaporating water from landfill leachate, its structure is as follows figure 1 As shown, it includes distilled water tank 1, distilled water pump 2, acid liquid tank 3, acid metering pump 4, hydrogen peroxide dosing tank 5, hydrogen peroxide dosing metering pump 6, pipeline mixer 7, pH detector 8, catalytic oxidation reaction tower 9. High temperature outlet tank 10 and control unit.

[0029] The distilled water tank 1 is used to hold the evaporated water from landfill leachate, the acid liquid tank 3 is used to hold sulfuric acid and / or nitric acid, and the hydrogen peroxide dosing tank 5 is used to hold 10-27%wt hydrogen peroxide Solution; the outlet of the distilled water tank 1, the outlet of the acid tank 3, and the outlet of the hydrogen peroxide dosing tank 5 are communicated with the pipeline mixer 7 through the distilled water pump 2, the acid metering pump 4 and the ...

Embodiment 2

[0035] This embodiment discloses a high-temperature catalytic oxidation advanced treatment method and system for evaporating water from landfill leachate, using the system described in Embodiment 1, including the following steps:

[0036] The landfill leachate with an organic matter content of 168 mg / L in the distilled water tank 1 evaporates water, and the water temperature of the evaporated water is 95° C., 8% dilute sulfuric acid in the acid tank 3, and 27% wt hydrogen peroxide solution in the hydrogen peroxide dosing tank 5, pass through the acid solution Dilute sulfuric acid in the tank 3 adjusts the pH value of the evaporated water to 6.0, and the dosage of hydrogen peroxide is hydrogen peroxide: organic matter=2.5:1 (w / w), and the reaction is carried out in the catalytic oxidation reaction tower 9 under high temperature conditions, and the reaction time is 1.5 hours. Finally, the effluent overflows into the high-temperature effluent tank, the organic matter content in th...

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Abstract

The invention provides an advanced treatment method and a system for landfill leachate evaporation effluent, and the advanced treatment method for landfill leachate evaporation effluent comprises thefollowing steps: adding an acid into landfill leachate evaporation effluent to adjust the pH value to be slightly acidic, adding a hydrogen peroxide reagent, and uniformly mixing through a pipeline mixer; enabling the mixed solution to enter a high-temperature catalytic oxidation reaction tower, carrying out catalytic oxidation reaction under a high-temperature condition, and oxidizing and removing organic matters in the evaporated water of the landfill leachate; and enabling the effluent of the catalytic oxidation reaction tower to overflow into a high-temperature water outlet tank. The advanced treatment method for the landfill leachate evaporation effluent does not need to be cooled, is not influenced by temperature, and is ideal in treatment effect.

Description

technical field [0001] The invention relates to a technology for treating landfill leachate evaporated water, in particular to an advanced treatment method and system for landfill leachate evaporated water. Background technique [0002] Landfill leachate refers to the sewage formed by leaching of the water produced by the decomposition of organic matter in the garbage and the free water in the garbage, precipitation, and infiltrated groundwater during the landfill and stacking process. When the humidity exceeds its water-holding capacity, the suspended or dissolved organic pollutants and heavy metals and other inorganic pollutants in the garbage dump will be dissolved together, and leachate will be produced. [0003] With the gradual improvement of economic level and people's quality of life, the country pays more and more attention to environmental protection, and new sewage discharge standards are continuously introduced, which makes today's environmental protection techno...

Claims

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Application Information

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IPC IPC(8): C02F9/04C02F101/30
CPCC02F1/66C02F1/725C02F1/722C02F2101/30
Inventor 杨微孙彤辉王志强周颖
Owner 大连广泰源环保科技有限公司
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