A method and system for advanced treatment of leachate

A technology of advanced treatment and leachate, applied in the field of leachate treatment, can solve the problems of poor leachate treatment effect, difficult management and storage, complex leachate components, etc., and achieve comprehensive treatment, easy operation, and high impact load resistance Effect

Active Publication Date: 2021-07-02
何小松 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the complex composition of the leachate, it is difficult to treat it well with conventional biochemical techniques, and the untreated leachate will enter the environment, which will lead to the deterioration of the water body, soil and the entire ecosystem
[0004] Based on the above situation, the present invention provides a system and method for advanced treatment of leachate, which can effectively remove pollutants such as organic matter and heavy metals, and prevent high-level pollutants from penetrating into the ground to pollute groundwater, or the leachate cannot be used to cause difficulties in management and storage, or The leachate treatment effect is poor and it is used to irrigate polluted farmland, etc., to ensure that the leachate does not affect human health during human activities, and is easy to manage and reuse

Method used

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  • A method and system for advanced treatment of leachate
  • A method and system for advanced treatment of leachate
  • A method and system for advanced treatment of leachate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0182] A method for advanced treatment of leachate, liquid treatment of leachate by such as figure 1 The system implementation shown.

[0183] The leachate to be treated is prepared in the leachate distribution tank 500, and then passed into the electrolytic cell 100 for electrochemical treatment; solid-liquid separation is performed on the flocculated turbid liquid after electrochemical treatment, and the flocculated suspended matter is discharged; solid-liquid separation The final effluent is passed into the wetland purification device 200, and the leachate pollutants are degraded or removed through the laid packing layer, such as the fixation and removal of nitrogen, phosphorus and heavy metals, the degradation of refractory pollutants, and finally effluent.

[0184] The electrolytic cell 100 is composed of anode Ti / Pt / SbO 2 -Sb 2 o 4 , cathode graphite carbon felt and iron amphoteric electrode, the anode 110, cathode 120 and amphoteric electrode 130 are flat electrodes,...

Embodiment 2

[0189] A method for advanced treatment of leachate, leachate liquid treatment through such as figure 2 The system implementation shown.

[0190] The leachate to be treated is prepared in the leachate distribution tank 500, and then passed into the electrolytic cell 100 for electrochemical treatment; solid-liquid separation is performed on the flocculated turbid liquid after electrochemical treatment, and the flocculated suspended matter is discharged; solid-liquid separation The final effluent is passed into the wetland purification device 200, and the leachate pollutants are degraded or removed through the laid packing layer, such as the fixation and removal of nitrogen, phosphorus and heavy metals, the degradation of refractory pollutants, and finally effluent.

[0191] The electrolytic cell 100 consists of anode Ti / IrO 2 / RuO 2 , the cathode graphite carbon blanket and the iron amphoteric electrode, the anode 110, the cathode 120 and the amphoteric electrode 130 are flat...

Embodiment 3

[0197] A method for advanced treatment of leachate, leachate liquid treatment through such as image 3 The system implementation shown.

[0198] The leachate to be treated is prepared in the leachate distribution tank 500, and then passed into the electrolytic cell 100 for electrochemical treatment; solid-liquid separation is performed on the flocculated turbid liquid after electrochemical treatment, and the flocculated suspended matter is discharged; solid-liquid separation The final effluent is passed into the wetland purification device 200, and the leachate pollutants are degraded or removed through the laid packing layer, such as the fixation and removal of nitrogen, phosphorus and heavy metals, the degradation of refractory pollutants, and finally effluent.

[0199] The electrolytic cell 100 electrolytic cell is composed of anode Ti / IrO 2 / RuO 2 , cathode activated carbon fiber electrode and aluminum amphoteric electrode. The cathode 120 is a closed screen tube with mi...

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Abstract

The invention discloses a method and system for advanced treatment of leachate. The method comprises the following steps: passing the leachate to be treated into an electrolytic cell (100) for electrochemical treatment; Liquid separation, discharge the flocculated sediment / suspended matter; the effluent after solid-liquid separation is passed into the wetland purification device (200), and the leachate pollutants are degraded or removed through the laid packing layer, and finally the water is effluent; preferably , the method also includes the step of removing volatile organic compounds and malodorous gas in the leachate. In the method and system of the present invention, the pollutant content in the leachate can be effectively reduced or removed through electro-oxidation, electro-flocculation, and wetland advanced treatment, and even the air pollution caused by the leachate can be eliminated through the deodorization system, and the effective treatment of the leachate is realized. Management and disposal to ensure that leachate does not affect human health during human activities.

Description

technical field [0001] The invention relates to the field of leachate treatment, in particular to a method and system for advanced treatment of leachate. Background technique [0002] Landfill leachate refers to the liquid produced under the action of self-decomposition, rainfall and other seepage of external water during the process of stacking and landfilling. There are many types of inorganic and organic pollutants in landfill leachate, including refractory toxic and harmful pollutants and heavy metals. [0003] Leachate has the following characteristics: (1) High concentration of pollutants and complex composition: During the production process of landfill leachate, due to the original pollutants in the waste and the pollutants generated after the degradation of the waste enter the landfill seepage through dissolution and washing, etc. In the filtrate, the concentration of pollutants in the landfill leachate is particularly high, and the composition is complex. This ch...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14B01D53/00B01D53/18B01D53/14B01D53/04C02F101/20C02F101/30C02F103/06
CPCB01D53/00B01D53/007B01D53/04B01D53/1487B01D53/18B01D2257/708B01D2257/91B01D2259/804C02F1/46109C02F3/32C02F3/34C02F9/00C02F2101/20C02F2101/30C02F2103/06Y02A50/20
Inventor 何小松朱晔晔虞敏达
Owner 何小松
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