Efficient denitrification treatment method for landfill leachate

A technology of landfill leachate and treatment method, which is applied in the field of high-efficiency denitrification treatment of landfill leachate, which can solve problems such as increased operating costs, prolonging the process, and increasing operational difficulty, and achieves strong applicability, improved processing efficiency, and good adaptability Effect

Active Publication Date: 2020-04-17
HANGZHOU XINGYUAN FILTER TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for such high-concentration organic matter with complex components, if the front-end biological treatment does not achieve a certain effect, more processes will be added later, which will prolong the process and increase the difficulty of operation on the one hand, and double the operating cost on the other hand. improve

Method used

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  • Efficient denitrification treatment method for landfill leachate

Examples

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Comparison scheme
Effect test

Embodiment 1

[0034] Preparation of activated fiber web

[0035] The preparation of porous iridium particles: get the metal iridium powder with a particle size of 10 μm, press it into a prefabricated porous metal plate with a cold isostatic press, the thickness of the metal plate is 0.2mm, place the metal plate in a sintering furnace, feed nitrogen, After the air was exhausted, it was calcined at 1500°C for 4 hours in a nitrogen atmosphere, cooled to room temperature, and then ground to obtain porous iridium particles.

[0036] Preparation of iridium composite particles: weigh 10g FeCl 2 4H 2 O and 20g FeCl 3 ·6H 2O was dissolved in 1000ml of deionized water, then 40g of porous iridium particles were added, ultrasonically dispersed for 10min at a frequency of 25kHz and a power of 145W, heated in an oil bath to 60°C, and reacted for 15min. React at a high temperature for 5 hours in a high-pressure reactor. After the reaction, cool to room temperature, stir at a speed of 200r / min for 30 m...

Embodiment 2

[0047] Preparation of activated fiber web

[0048] The preparation of porous iridium particles: get the metal iridium powder with a particle size of 30 μm, press it into a prefabricated porous metal plate with a cold isostatic press, the thickness of the metal plate is 0.2mm, place the metal plate in a sintering furnace, feed nitrogen, After the air was exhausted, it was calcined at 1600°C for 3 hours in a nitrogen atmosphere, cooled to room temperature, and then ground to obtain porous iridium particles.

[0049] Preparation of iridium composite particles: weigh 10g FeCl 2 4H 2 O and 20g FeCl 3 ·6H 2 O was dissolved in 1000ml of deionized water, then 40g of porous iridium particles were added, ultrasonically dispersed for 10min at a frequency of 25kHz and a power of 145W, heated in an oil bath to 80°C, and reacted for 10min. React at a high temperature for 3 hours in a high-pressure reactor. After the reaction, cool to room temperature, stir at a speed of 300r / min for 30 ...

Embodiment 3

[0054] Preparation of activated fiber web

[0055] Preparation of porous iridium particles: get the metal iridium powder with a particle size of 20 μm, press it into a prefabricated porous metal plate with a cold isostatic press, the thickness of the metal plate is 0.2mm, place the metal plate in a sintering furnace, and feed nitrogen, After exhausting the air, calcining at 1550° C. for 3.5 hours under nitrogen atmosphere, cooling to room temperature, and grinding to obtain porous iridium particles.

[0056] Preparation of iridium composite particles: weigh 10g FeCl 2 4H 2 O and 20g FeCl 3 ·6H 2 O was dissolved in 1000ml of deionized water, then 40g of porous iridium particles were added, ultrasonically dispersed for 10min at a frequency of 25kHz and a power of 145W, heated in an oil bath to 70°C, and reacted for 30min. React at a high temperature for 4 hours in a high-pressure reactor. After the reaction, cool to room temperature, stir at a speed of 250r / min for 30 minute...

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Abstract

The invention discloses an efficient denitrification treatment method for landfill leachate, and relates to the technical field of landfill leachate treatment. The efficient denitrification treatmentmethod specifically comprises: grid separation, anaerobic treatment, A / O system treatment, MBR treatment and subsequent treatment. According to the invention, the front-end pretreatment and biologicaltreatment technical method in the traditional process is improved, pretreatment, anaerobic treatment and aerobic treatment are combined without adding chemicals, and the stabilization of leachate front-end treatment is realized by utilizing the principles of denitrification anaerobic methane oxidation, short-cut denitrification and anaerobic ammonia oxidation, so that the organic load is reducedto a great extent, the ammonia nitrogen removal efficiency is improved, the nutrient ratio of carbon to nitrogen to phosphorus is balanced, the subsequent treatment burden is reduced, and the treatment difficulty is reduced.

Description

technical field [0001] The invention relates to the technical field of landfill leachate treatment, in particular to a high-efficiency denitrification treatment method for landfill leachate. Background technique [0002] Landfill leachate, also known as leachate or leachate, refers to the sewage produced by fermentation, rainwater leaching, scouring, and surface water and groundwater immersion during the process of stacking and landfilling domestic waste. Landfill leachate treatment is a recognized problem at home and abroad, especially the implementation of the new standard "GB16889-2008" "Standards for Pollution Control of Domestic Waste Landfill Sites", which puts forward higher requirements for the treatment of landfill leachate. [0003] In the field of garbage treatment, the treatment of landfill leachate is divided into leachate treatment of domestic waste incineration plants and leachate treatment of landfills. Regardless of the incineration plant or the landfill, t...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F103/06C02F101/16
CPCC02F9/00C02F3/2846C02F3/30C02F3/00C02F1/481C02F2101/16C02F2103/06C02F2301/043
Inventor 杨彦飞高彦波许生军贾彦文陈倩倩李洁郑敬超胡学勇
Owner HANGZHOU XINGYUAN FILTER TECH
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