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Control process for treating urban garbage by aerobic bioreactor landfill

A technology for municipal solid waste and aerobic organisms, which is applied in the field of solid waste treatment and disposal to achieve the effects of increasing sedimentation rate, reducing pollution load and treatment difficulty, and reducing output

Inactive Publication Date: 2013-09-18
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, domestic research on landfill technology focuses on anaerobic and quasi-aerobic landfill technology, and there are few reports on the control parameters of aerobic bioreactor landfill sites. Therefore, research on aerobic bioreactor landfill technology The parameters are of great significance to the further exploration and technical reserve of solid waste treatment technology

Method used

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  • Control process for treating urban garbage by aerobic bioreactor landfill
  • Control process for treating urban garbage by aerobic bioreactor landfill
  • Control process for treating urban garbage by aerobic bioreactor landfill

Examples

Experimental program
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Effect test

Embodiment 1

[0019] Garbage samples were taken from domestic garbage near the northern section of the Second Ring Road in Chengdu, and some plastic, glass, metal, rubble and other substances were removed, and the large pieces of garbage were broken to about 5cm before landfilling and mixed to overcome the influence of scale effect (Garbage components are: kitchen waste, 65.0% to 68.0%; bamboo and wood, 12.0% to 15.0%; paper, 5.0% to 7.0%; plastic, 8.0% to 10.0%; textiles, 1.5% to 2.0%; metal category, 0.5% to 1.0%; other ingredients, 1.0% to 3.0%).

[0020] Each simulated bioreactor landfill was filled with 32.0kg of garbage respectively, and the aerobic landfill method was adopted, and temperature control measures were implemented to keep the reactor temperature at 20°C, 25°C, 30°C, 35°C and 40°C respectively. When the temperature of the garbage body in the device is lower than the temperature controlled by the experiment, the temperature control device automatically heats the simulated e...

Embodiment 2

[0026] Landfill waste sampling and composition are the same as in Example 1.

[0027] The compacted density of landfill waste in each simulated aerobic bioreactor landfill site is 450kg / m 3 、500kg / m 3 、550kg / m 3 、600kg / m 3 、650kg / m 3 、700kg / m 3 , Each group of reactors is filled with 32kg of pretreated garbage, compacted every 5kg, all adopt aerobic landfill method, and the temperature is controlled by a temperature controller at 30-40°C. The experiment was carried out for 208 days, and the changing trend of the indicators reflecting the stabilization process of each reactor was monitored during the landfill process.

[0028] In the first 3 to 10 days of landfilling, the rapid accumulation of hydrolysis and acidification products of organic waste caused the pH of the leachate of each reactor to drop sharply. Afterwards, due to the rapid oxidation and decomposition of these metabolites under aerobic conditions, the pH of the leachate rapidly decreased. Rising, and finally...

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Abstract

The invention discloses a control process for treating urban garbage by an aerobic bioreactor landfill. The control process is that the aerobic bioreactor landfill is adopted to treat the urban garbage for quick biodegradation, the temperature and the compaction density of landfilled garbage are properly controlled, the temperature in the running process is 30-40 DEG C, and the compaction density of the garbage is 450-650kg / m<3>. By controlling the temperature and the compaction density in the running process of the aerobic bioreactor landfill, the biodegradation speed of the landfilled garbage can be effectively increased, the leachate treatment difficulty and cost of the garage landfill are lowered, the stabilization process of the landfill is accelerated, and the effective capacity of the landfill is increased; the control process has an important meaning on the acceleration of repeated utilization of the landfill and resource utilization of mineralized garbage, impalement of sustainable development of the landfill, and the like.

Description

Technical field [0001] The invention relates to solid waste treatment and disposal technology, especially the technical field of rapid and stable process parameters of aerobic bioreactor landfill. Background technique [0002] With the development of the economy and the improvement of the level of urbanization, municipal solid waste has become one of the serious social problems today, and the harmless treatment of municipal solid waste has become the focus of environmental pollution control in the "Eleventh Five-Year Plan" and "Twelfth Five-Year Plan" . As the most important sanitary landfill in the treatment and disposal of municipal solid waste, our country's tight land resources are overwhelmed. In order to effectively accelerate the biodegradation of landfill waste, save land resources, and prolong the service life of landfill sites, research on new landfill technology has become one of the hotspots of environmental workers at home and abroad. [0003] Aerobic bioreact...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/00
CPCY02W30/20
Inventor 邱忠平刘洋王枢童霏周丽萍刘志刚唐建
Owner SOUTHWEST JIAOTONG UNIV