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Domestic refuse resource treatment technology and apparatus therefor

A technology for domestic waste and recycling, which is applied in biological sludge treatment, biological organic part treatment, climate change adaptation, etc. It can solve the problems of secondary pollution of leachate, landfill explosion, and high operating costs, and achieve construction and use costs. Low cost, increased humidity, and the effect of solving high operating costs

Inactive Publication Date: 2011-03-16
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Conventional MSW anaerobic landfills produce methane within the landfill, making the landfill prone to explosion hazards
In order to export the gas smoothly to avoid explosions and recycle the gas at the same time, it is necessary to lay a gas collection pipeline system in the landfill, which is an expensive investment
Aerobic composting of domestic waste can turn waste into fertilizer, but the operating cost is high due to constant aeration
In addition, both anaerobic landfill and aerobic composting of domestic waste have the problem of secondary pollution of leachate
In order to treat the leachate in situ, some landfills recharge the leachate directly, but there is acid inhibition in the bioreactor technology of the leachate direct circulation refill type

Method used

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  • Domestic refuse resource treatment technology and apparatus therefor
  • Domestic refuse resource treatment technology and apparatus therefor
  • Domestic refuse resource treatment technology and apparatus therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] (1) Remove refractory substances such as plastics, stones, metals and glass in domestic garbage, fill the garbage into the garbage layer 9 in the landfill 1, and the garbage begins to degrade.

[0042] (2) During the landfill degradation process, the leachate flows out from the bottom of the landfill 1 into the water collection bottle 4 . The leachate is pumped into the bottom of the methanogenic reactor 2 from the water inlet pipe 14, fully contacted and reacted with the domesticated anaerobic sludge at the bottom of the methanogenic reactor 2, and the reaction temperature is controlled to be 35°C. The methane produced during the reaction Collect with air collecting bag 8, leachate overflows from methanogenic reactor 2 after the residence time in methanogenic reactor 2 is 24h, enters water collecting bottle 5 and collects, when the moisture content in the garbage is lower than 70%, pass through the wriggling rod The peristaltic pump 6 refills the leachate in the water ...

Embodiment 2

[0046] (1) Remove refractory substances such as plastics, stones, metals and glass in domestic garbage, fill the garbage into the garbage layer 9 in the landfill 1, and the garbage begins to degrade.

[0047] (2) During the landfill degradation process, the leachate flows out from the bottom of the landfill 1 into the water collection bottle 4 . The leachate is pumped into the bottom of the methanogenic reactor 2 from the water inlet pipe 14, fully contacted and reacted with the domesticated anaerobic sludge at the bottom of the methanogenic reactor 2, and the reaction temperature is controlled to be 30°C. The methane produced during the reaction Collect with air collecting bag 8, leachate overflows from methanogenic reactor 2 after residence time 30h in methanogenic reactor 2, enters in water collecting bottle 5, when the water content in the garbage is lower than 60%, by peristaltic pump 6 The leachate in the water collection bottle 5 is refilled into the garbage in the land...

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Abstract

The invention provides a domestic garbage resource utilization treatment technology which comprises the steps as follows: the garbage after removing residues is processed for anaerobic landfill treatment for degradation, and produced filtrate is collected; the filtrate is led into sludge for complete catalysis, then firedamp is collected, and the filtrate after reaction is filled back into the landfill garbage; after three to five months landfill treatment for degradation of the garbage, the bottom of the garbage is aerated for the aerobic compost treatment; the garbage which is completely mature after the aerobic compost treatment is crushed and dried to be made into fertilizer. The invention also provides a garbage treatment device. The disposing technology provided by the invention aerates the garbage at the later period of the garbage landfill, which accelerates the maturity and stabilization of the garbage; the cost is low; the speed is fast.

Description

technical field [0001] The invention relates to the field of environmental pollution control, and specifically refers to a domestic waste resource treatment technology and a device thereof. Background technique [0002] Conventional domestic waste anaerobic landfills produce methane inside the landfill, making the landfill prone to explosion hazards. In order to export the gas smoothly to avoid explosion and recycle the gas at the same time, it is necessary to lay a gas collection pipeline system in the landfill, which is an expensive investment. Aerobic composting of domestic waste can turn waste into fertilizer, but the operating cost is high due to constant aeration. In addition, both anaerobic landfill and aerobic composting of domestic waste have the problem of secondary pollution of leachate. In order to treat the leachate in situ, some landfills recharge the leachate directly, but there is acid inhibition in the bioreactor technology of the leachate direct circulati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05F9/04C02F11/04
CPCY02E50/343Y02A40/20Y02E50/30Y02W30/40
Inventor 沈东升何若邱才娣楼斌胡立芳龙焰郑元洛龙淤洋方程冉姚俊冯华军任明
Owner ZHEJIANG UNIV