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Landfill leachate treatment system and treatment process

A landfill leachate and treatment system technology, which is applied in the field of landfill leachate treatment system and treatment process, can solve problems such as high concentration, high SS content, and imbalance of microbial nutrient elements, so as to increase the reaction rate, shorten the reaction time, and improve The effect of utilization

Pending Publication Date: 2021-08-17
陕西金禹科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003](1) The water quality is complex and harmful
[0004](2) High concentrations of CODCr and BOD5
[0005](3) High metal content
[0006](4) High ammonia nitrogen content, high salt content, high SS content
[0007](5) Dark in color and foul smelling
Therefore, the decolorization treatment and the negative impact of the odor on the operation must be considered
[0008](6) The proportion of microbial nutrients is out of balance

Method used

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  • Landfill leachate treatment system and treatment process
  • Landfill leachate treatment system and treatment process
  • Landfill leachate treatment system and treatment process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Such as figure 1 As shown, a landfill leachate treatment system includes a stock solution pool 13 for storing leachate, a microchannel reactor 15 for mixing landfill leachate and lime, and a primary solid-liquid separation tank 13 that are connected in sequence through pipelines. Cyclone 16, filter 20 for secondary solid-liquid separation, electrochemical device 18 for redox reaction, and biochemical device 19 for biochemical treatment.

[0046] By setting the microchannel reactor 15, compared with the traditional manual stirring, the device speeds up the reaction of leachate and lime, makes the mixing more uniform, and improves the reaction rate.

[0047] By setting the electrochemical device 18, using the electrochemical device 18 to carry out electrolysis, the acid ions generated after oxidation are passed into the biochemical device 19, the acid ions increase the reaction rate with microorganisms, and shorten the reaction time of the biochemical device 19.

[0048]...

Embodiment 2

[0050] Such as figure 1 Shown, a kind of landfill leachate treatment process comprises step A: leachate is passed into microchannel reactor 15 by inlet pump, injects lime to microchannel reactor 15 simultaneously, makes leachate and lime flow in microchannel reactor 15 internal reaction to form a mixture.

[0051] Step B: pass the mixed liquid into the cyclone 16 for rough filtration, discharge the solid into the slag discharge tank 17 , and pass the primary filtrate into the filter 20 .

[0052] Step C: The primary filtrate is subjected to fine filtration in the filter 20 , the filter residue is discharged into the slag discharge tank 17 , and the secondary filtrate is passed into the electrochemical device 18 .

[0053] Step D: The secondary filtrate undergoes an electrolysis reaction in the electrochemical device 18, and the cations generated by the electrolysis pass into the biochemical device 19 for biochemical reaction.

Embodiment 3

[0055] Such as Figure 1-4 As shown, a landfill leachate treatment system includes a stock solution pool 13 for storing leachate, a microchannel reactor 15 for mixing landfill leachate and lime, and a primary solid-liquid separation tank 13 that are connected in sequence through pipelines. Cyclone 16, filter 20 for secondary solid-liquid separation, electrochemical device 18 for redox reaction, and biochemical device 19 for biochemical treatment.

[0056] By setting the microchannel reactor 15, compared with the traditional manual stirring, the device speeds up the reaction of leachate and lime, makes the mixing more uniform, and improves the reaction rate.

[0057] By setting the electrochemical device 18, using the electrochemical device 18 to carry out electrolysis, the acid ions generated after oxidation are passed into the biochemical device 19, the acid ions increase the reaction rate with microorganisms, and shorten the reaction time of the biochemical device 19.

[00...

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Abstract

The invention discloses a landfill leachate treatment system. The system comprises a stock solution pool used for storing leachate, a micro-channel reactor used for mixing the landfill leachate and lime, a cyclone used for primary solid-liquid separation, a filter used for secondary solid-liquid separation, electrochemical equipment used for oxidation-reduction reaction and biochemical equipment used for biochemical treatment which are sequentially communicated through a pipeline. The landfill leachate treatment process comprises the following steps: step A, introducing leachate into the micro-channel reactor through a liquid inlet pump, and injecting lime into the micro-channel reactor at the same time, so that the leachate and the lime react in the micro-channel reactor to form a mixed solution; step B, introducing the mixed solution into the cyclone for rough filtration, discharging solids into a slag discharge tank, and introducing the primary filtrate into the filter; by arranging the micro-channel reactor, compared with traditional manual stirring, the equipment accelerates the reaction of percolate and lime, enables mixing to be more uniform, and improves the reaction rate.

Description

technical field [0001] The invention belongs to the field of landfill leachate treatment, and in particular relates to a landfill leachate treatment system and a treatment process. Background technique [0002] Landfill leachate is the waste water produced by the decomposition of microorganisms, the leaching of rainwater, and the long-term immersion of surface water and groundwater during the stacking of municipal solid waste in landfills. It is a high-concentration organic waste water with complex components. Water quality and quantity vary greatly, with the following main characteristics: [0003] (1) The water quality is complex and harmful. [0004] (2)COD Cr and BOD 5 High concentration. [0005] (3) High metal content. [0006] (4) High ammonia nitrogen content, high salt content and high SS content. [0007] (5) Dark in color and foul smelling. Therefore, the decolorization treatment and the negative impact of the odor on the operation must be considered. [0...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F101/20C02F101/30C02F103/06
CPCC02F9/00C02F1/001C02F1/38C02F1/66C02F1/46104C02F3/30C02F2101/20C02F2101/30C02F2103/06
Inventor 王延军
Owner 陕西金禹科技发展有限公司
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