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Deep treatment method for landfill leachate

A landfill leachate and advanced treatment technology, which is applied in the advanced treatment of landfill leachate and drinking water treatment fields, can solve the problems of high concentration of difficult biodegradable organic matter, poor biodegradability and complex composition.

Inactive Publication Date: 2015-02-18
XIAN HUALU ENVIRONMENTAL PROTECTION EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Landfill leachate is a kind of complex composition of high-concentration toxic and harmful organic wastewater. The concentration of refractory organic matter in landfill leachate treated by SBR method is relatively high, and its COD and BOD5 concentrations have not reached the national first-level discharge standard. Its BOD5 / COD lower than 0.1, poor biodegradability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Collect the landfill leachate that has been treated by the SBR method and does not meet the standard discharge, add an appropriate amount of sodium chloride, so that the chloride ion concentration in the leachate is about 10000mg / L, and then add the leachate to the electrode material as RuO 2 -IrO 2 -TiO 2 / Ti, the current density is 10A / dm 2 , The electrode spacing is 0.5cm, and the electrode area used per unit volume of leachate is 50cm 2 / L electrolytic cell for 48 minutes of catalytic electrolysis, the landfill leachate after catalytic electrolysis is the drainage that meets the discharge standard.

Embodiment 2

[0014] Embodiment two: processing effect

[0015] Using the advanced treatment method described in the present invention, a landfill leachate that has not been discharged up to the standard after SBR treatment is treated, and the treatment results are shown in Table-1.

[0016] Table-1 Treatment effect

[0017] .

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PUM

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Abstract

The invention relates to a deep treatment method for landfill leachate, and belongs to the field of drinking water treatment methods. The deep treatment method for the landfill leachate comprises steps as follows: the landfill leachate which is treated with an SBR (sequencing batch reactor) method and is not up to the standard and drained is collected, an appropriate amount of sodium chloride is added, the concentration of chloride ions in the leachate is 10,000 mg / L, then the leachate is added into an electrolytic bath for catalytic electrolysis under certain conditions, and the landfill leachate after catalytic electrolysis is up to the standard and drained. According to the deep treatment method for the landfill leachate, the catalytic electrolysis method is adopted to perform catalytic electrolysis on the landfill leachate which is treated with the SBR method and is not up to the standard and drained, so that content of COD (chemical oxygen demand), ammonia nitrogen and BOD5 (biochemical oxygen demand5) in the leachate is reduced, the COD removal rate is higher than 86.5%, the ammonium nitrogen removal rate is nearly 100%, the chroma removal rate is higher than 91%, and the leachate meets requirements of up-to-standard emission.

Description

technical field [0001] The invention relates to an advanced treatment method for landfill leachate, belonging to the field of drinking water treatment methods. Background technique [0002] Landfill leachate is a kind of complex composition of high-concentration toxic and harmful organic wastewater. The concentration of refractory organic matter in landfill leachate treated by SBR method is relatively high, and its COD and BOD5 concentrations have not reached the national first-level discharge standard. Its BOD5 / COD lower than 0.1, poor biodegradability. [0003] Therefore, it is necessary to study an advanced treatment method for landfill leachate treated by SBR method with simple process, low operating cost and good treatment effect, so as to achieve the standard discharge of wastewater. Contents of the invention [0004] The invention aims to provide an advanced treatment method for landfill leachate treated by the SBR method with simple process, low operation cost an...

Claims

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Application Information

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IPC IPC(8): C02F9/06
CPCC02F1/461C02F2001/46133
Inventor 陆强
Owner XIAN HUALU ENVIRONMENTAL PROTECTION EQUIP
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