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Pyrolysis and gasification treatment technology for landfill leachate

A technology for pyrolysis, gasification, and waste, applied in filtration treatment, gasification process, water/sewage treatment, etc., can solve the problems of high cost, unfavorable promotion and application, difficult treatment, etc. The effect of reducing processing cost and difficulty

Inactive Publication Date: 2018-07-27
张波
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the technology that can meet the discharge standards is mainly the use of reverse osmosis technology, but there are still many problems in the treatment of landfill leachate, such as the difficulty of treatment and high cost, which is not conducive to widespread application

Method used

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Embodiment

[0022] Embodiment: The embodiment of the present invention provides a waste filtrate pyrolysis gasification treatment technology, which includes the following steps:

[0023] A waste filtrate pyrolysis gasification treatment technology, comprising the following steps:

[0024] (1) Filter the landfill leachate through the grid, separate the leachate from the garbage, and enter the leachate into the treatment system; preferably, after the primary separation of the treatment system, add 0.5% of the leachate by weight to the leachate -5% flocculant for mixing. The amount of flocculant added can be adjusted appropriately in 0.5-5% according to the nature of the leakage liquid.

[0025] (2) solid-liquid separation is carried out on the leachate by the dissolved air flotation method to obtain a solid part and a liquid part; the step (2) specifically includes the following steps: carrying out dissolved air flotation on the leachate, all or part of the to-be-treated Or the treated wa...

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PUM

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Abstract

The invention discloses a pyrolysis and gasification treatment technology for landfill leachate. The technology comprises the following steps: 1) the landfill leachate is filtered by a grill, and leachate and garbage are separated; 2) the leachate is subjected to solid-liquid separation with a dissolved air flotation method; 3) solids and water are completely separated, after filtration, a clear liquid is fed to a sewage treatment system and finally treated into irrigation water or municipal water; upper suspended solids and lower precipitates are atomized to be sprayed into a two-section townhouse-like garbage pyrolysis and gasification incinerator for pyrolysis and gasification treatment and are converted into inorganic ash and gas finally, and thorough treatment is realized. The technology is ingenious in treatment, the landfill leachate difficult to treat is simplified and reduced through pyrolysis and gasification, so that treatment cost and difficulty of the landfill leachate arereduced effectively, organic matter removal efficiency is high, effluent quality is stable, impact load bearing capacity is high, treatment of the landfill leachate can be realized effectively, and wide promotion and application are facilitated.

Description

technical field [0001] The invention relates to the technical field of landfill leachate treatment, in particular to a technology for pyrolysis and gasification treatment of landfill filtrate. Background technique [0002] With the rapid development of my country's economy and the continuous expansion of the scale of cities, the amount of municipal solid waste has also increased sharply. The daily amount of garbage per capita has exceeded 1.1kg, and it is increasing at a rate of 8% to 10%. Only big cities such as Beijing and Shanghai generate about 20,000 tons of domestic garbage every day. my country has become one of the most serious cities in the world surrounded by garbage. [0003] In the process of stacking, landfilling and temporary storage of municipal biochemical waste, a large amount of landfill leachate with foul smell is produced which is difficult to handle. The leachate is affected by many factors and contains ammonia nitrogen and various dissolved cations, h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/10C01B3/02C10J3/46F23G5/027
CPCC01B3/02C02F1/001C02F1/025C02F1/24C02F1/52C02F9/00C10J3/46C10J2300/0946F23G5/027
Inventor 张波杨红波
Owner 张波