Recycling grading utilization and carbon sequestration treatment method for municipal solid waste

A technology for recycling municipal solid waste, applied in the field of grading utilization of municipal solid waste and carbon sequestration treatment, can solve the problem of failing to recycle municipal solid waste, and achieve improved resource efficiency, high economic benefits, The effect of reducing pollution

Active Publication Date: 2012-12-05
UNIV OF SCI & TECH LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this process only recycles domestic waste in the form of heat energy, and fails to recycle urban domestic waste. At the same time, the process of waste treatment increases CO 2 emissions

Method used

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  • Recycling grading utilization and carbon sequestration treatment method for municipal solid waste
  • Recycling grading utilization and carbon sequestration treatment method for municipal solid waste
  • Recycling grading utilization and carbon sequestration treatment method for municipal solid waste

Examples

Experimental program
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Embodiment Construction

[0026] Select 5kg of municipal solid waste for resource classification treatment, select three groups of different components of municipal solid waste (MSW) raw materials, feed them into a rolling mill to crush non-metallic inorganic substances, squeeze the raw municipal solid waste, and separate out the liquid Garbage and solid waste; the solid waste is crushed by a garbage crusher to below 80 mesh, and then mixed with the liquid waste through the first-stage mixing unit and then put into the first-stage fermentation tank, and Clostridium thermocellum ATCC27405 and Clostridium pyrolyticum are added, pH The value is controlled between 7.0-8.5, stirring intermittently, the fermentation temperature is 45-55°C, the fermentation time is 10-15 days, and fermentation and flash evaporation produce ethanol;

[0027] The waste liquid after flash evaporation and the biogas residue produced by solid-liquid separation after fermentation in the first-stage fermenter are mixed and stirred, a...

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Abstract

The invention belongs to the technical field of recycling grading utilization of municipal solid waste, and particularly relates to a recycling grading utilization and carbon sequestration treatment method for the municipal solid waste. The method is characterized in that a two-section anaerobic fermentation technology, a pyrolysis technology and a landfill technology are adopted in a combined way; and the method has the advantages that the municipal solid waste is innocent and is recycled, and the discharge of CO2 can be reduced by a carbon sequestration technology.

Description

technical field [0001] The invention belongs to the technical field of resource classification and utilization of urban domestic waste, and in particular relates to a resource classification utilization of urban domestic waste and a carbon fixation treatment method. technical background [0002] With the continuous expansion of cities and the rapid increase of urban population, domestic waste pollution has become a global environmental problem. According to incomplete statistics, my country's municipal solid waste is increasing at a rate of 8-10% per year. In 2010, the daily output was 600,000-700,000 tons, and the annual output was 252 million tons. The main components of domestic waste include: kitchen waste, waste paper, waste plastic, waste fabric, waste metal, waste glass and ceramic fragments, brick and tile muck, feces, waste household appliances, waste electrical appliances, garden waste, etc. Table 1 shows the composition of some municipal solid waste in China. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P7/08C12P5/02C10L3/08C10L3/00B09B3/00C12R1/145
CPCY02E50/343Y02E50/30Y02P20/129Y02W30/20
Inventor 余江龙韩艳娜尹丰魁徐静张东柯
Owner UNIV OF SCI & TECH LIAONING
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