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Domestic refuse anaerobic-aerobic reactor circulating operation landfill method

An aerobic reactor and anaerobic reactor technology, applied in the direction of solid waste removal, etc., can solve the problem of not taking the overall consideration of landfill gas production, the recycling of garbage stable landfill sites, and the lack of in-depth research on anaerobic-aerobic conversion. Process parameters and other issues to achieve the effect of reducing landfill operating costs, improving resource utilization, and saving disposal costs

Inactive Publication Date: 2007-03-07
HUAZHONG UNIV OF SCI & TECH
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  • Claims
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Problems solved by technology

However, the focus of their anaerobic-quasi-aerobic joint operation research is still focused on the issue of landfill leachate, without overall consideration of issues such as landfill gas production, waste stabilization, and landfill site recycling under the joint operation mode, and did not go deep into the issue. Research on anaerobic-aerobic conversion process parameters is essentially different from the content of the present invention

Method used

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  • Domestic refuse anaerobic-aerobic reactor circulating operation landfill method
  • Domestic refuse anaerobic-aerobic reactor circulating operation landfill method
  • Domestic refuse anaerobic-aerobic reactor circulating operation landfill method

Examples

Experimental program
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Effect test

example 1

[0042] Process conditions: (1) The daily processing demand of the landfill unit is 100t; (2) The moisture content of the landfill waste is 50-60%, the volatile organic solid content is 35-45% (dry weight), and the compacted density is 1t / m 3 (According to a municipal garbage composition survey); (3) The average monthly precipitation is 150mm, and the maximum monthly precipitation is 234mm (according to the meteorological data of a certain city for many years); (4) The height of the landfill unit (bioreactor) is 3m.

[0043] Build 2 unit storage capacity of 100m×50m×3m (15000m 3 ) landfill unit to meet the anaerobic-aerobic cycle landfill operation. In the anaerobic landfill stage, leachate recharge is used, and each landfill unit is recharged once a day, each time 2000m 3 ; During the aerobic landfill phase, forced ventilation is carried out for 8 hours a day.

[0044] The filling time of each unit is 150d; the completion time of the anaerobic phase is 110d; the completion...

example 2

[0046] Processing condition is identical with example 1.

[0047] Build 3 unit storage capacity of 50m×50m×3m (7500m 3 ) landfill unit to meet the anaerobic-aerobic cycle landfill operation. In the anaerobic landfill stage, leachate recharge is used, and each landfill unit is recharged once a day, each time 850m 3 ; During the aerobic landfill phase, forced ventilation is carried out for 12 hours a day.

[0048] The filling time of each unit is 75d; the completion time of the anaerobic phase is 120d; the completion time of the aerobic phase is 20d; the garbage excavation time is 10d; the unit process cycle is 225d.

[0049] The job diagram of Example 2 is shown in Figure 3:

[0050] The small storage capacity of the landfill unit is beneficial to reduce the landfill cycle, increase the circulation speed of the landfill site, and save land resources at the same time. As in Example 2, the landfill area is 7500m 3 , saving 25% of land resources compared with Scheme 1. Howev...

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Abstract

The invention relates to a method for embedding life waste via anaerobic-aerobic reactor. Wherein, it comprises that embedding anaerobically the life waste, the generated filter water refluxes to the top of embed layer, and recycles the embed gas; refluxing, to reach certain technique standard, stopping refluxing filter water, to ventilate the embed layer; making said embedded layer in aerobic condition, to remove the water and smell gas of waste layer, lead tail gas into filer water to remove ammonia nitrogen; stopping aerobic step; treating waste water, selecting putrefactive waste to be recycled. The invention can reduce cost and improve the quality of filter water.

Description

technical field [0001] The invention belongs to the resource utilization and treatment technology of urban living garbage, and in particular relates to a landfill method of domestic garbage anaerobic-aerobic reactor cycle operation. Background technique [0002] Sanitary landfill is the most commonly used domestic waste treatment and disposal method at home and abroad. In 2005, my country's sanitary landfill disposal accounted for more than 90% of the harmless disposal of domestic waste. However, there are still many problems in my country's municipal solid waste sanitary landfills. The technical deficiencies are mainly the low biogas production, the difficult treatment of landfill leachate, and the long stable period. [0003] Bioreactor landfill is a new development of sanitary landfill technology, which accelerates the transformation and stabilization of easily degradable substances in garbage by purposefully controlling the biodegradation process. These controls includ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/00
Inventor 陈朱蕾周传斌江娟刘婷李希堃吕志中黎小保张文静
Owner HUAZHONG UNIV OF SCI & TECH
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