Landfill disposal method for rapidly stabilizing organic household waste and increasing methane yield

Abstract

The invention discloses a landfill disposal method for rapidly stabilizing organic household waste and increasing methane yield. Household wastes are comprehensively sorted, the effective volume of a landfill unit of a bioreactor is sufficiently utilized, and cost is reduced; a buffer covering material, a heat exchange pipeline system and a leachate recharge system are laid to regulate pH, temperature and moisture content of waste digestion reaction in a landfill area, enhancing the growing and metabolic capability of microorganisms, consequently, waste degradation is accelerated, and the period of stabilizing wastes is shortened; and an IC (internal circulation) reactor is adopted to ferment initial leachate for the second time and recover methane. By utilizing leachate recharge after fermentation, the treatment load of the landfill area cannot be increased, and problems, such as easy excessive acidification in the operation process of a high-load anaerobic system, are improved; and moreover, the method abides by the objective law of anaerobic digestion of organic matter, effectively promotes the stability of organic household waste degradation, greatly increases the methane production rate and methane yield of the landfill unit, and increases the reclamation level of the landfill unit of the bioreactor.

Description

technical field [0001] The invention belongs to the field of environmental protection technology for solid waste treatment and disposal, and in particular relates to a system for improving the efficiency of domestic waste landfill disposal and methane production rate by strengthening the microbial anaerobic fermentation process, specifically a system for quickly stabilizing organic domestic waste and increasing methane Yield landfill disposal method. Background technique [0002] Municipal solid waste (MSW for short) is solid waste generated in people's daily life in the city and in the activities of providing services for urban life, and is one of the main pollutants in the urban environment. Its main components include kitchen waste, waste paper, waste plastic, waste fabric, waste metal, waste glass, brick and tile muck, manure, waste furniture and yard waste, etc. In the 21st century, China's urbanization process is accelerating, and a large number of people are pouring ...

AI Technical Summary

Problems solved by technology

However, traditional waste landfills have problems such as slow waste degradation, long stabilization period, low gas production efficiency, and difficulty in recycling biogas. Therefore, following the objective laws of anaerobic digestion of organic matter, targeted improvement of landfill methods and technologies, and strengthening of landfill It is necessary to study the metabolic ability of microorganisms in the landfill, promote the degradation and stability of organic domestic waste, and improve the methane production rate and gas production rate of landfill units

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