Kitchen waste collaborative processing method

Abstract

The invention discloses a kitchen waste collaborative processing method mainly comprising the steps of pretreatment, regulation pulping, anaerobic fermentation, biogas utilization and biogas residue processing. With the kitchen waste collaborative processing method provided by the invention, favorable conditions in a waste incineration power plant are sufficiently utilized. Waste incineration power plant waste hot steam is adopted as a heat source for high-temperature fermentation, such that energy consumption and processing cost are reduced. Sundries produced in the pretreatment step and biogas residue produced in the biogas residue processing step are subjected to an incineration treatment in the waste incineration power plant, such that waste is effectively utilized, and investment cost is reduced. In addition, through purification, biogas is prepared into CNG vehicle fuel which is provided for waste incineration power plant collection and transportation vehicles, such that biogas resource utilization efficiency is improved, circulation links are reduced, and fossil energy utilization is reduced. The kitchen waste collaborative processing method provided by the invention is energy-saving and environment-friendly. The method has high resource utilization rate, low energy consumption, and low processing cost.

Description

technical field [0001] The invention relates to a processing method for kitchen waste, in particular to a method for co-processing the kitchen waste in a waste incineration power plant. Background technique [0002] Food waste has a complex composition, is highly perishable, and contains a variety of pathogenic bacteria, heavy metal components, and organic compounds. If it is discharged without treatment or flows into the hands of illegal traders, it will cause great harm. At present, food waste treatment options include landfill, incineration, composting, feed conversion, and anaerobic fermentation. Since the anaerobic fermentation technology can effectively use the easily degradable organic matter in the kitchen waste, convert it into biomass energy, and realize the "reduction, harmlessness, and resource utilization" of the kitchen waste. Therefore, anaerobic Fermentation has gradually become the mainstream technology for food waste treatment. [0003] Modern anaerobic f...

AI Technical Summary

Problems solved by technology

For example, the invention patent application with the patent number of 200810017436 discloses a method for recycling food waste, which includes oil separation, preliminary sorting, mechanical crushing, hydraulic pulping, slurry preparation, anaerobic fermentation, and oxygen control. Composting and other processes make the kitchen waste completely degraded, and finally biogas is decomposed by anaerobic digestion, and the biogas is used as energy after desulfurization treatment; high-quality organic fertilizers are produced from biogas residues through oxygen-controlled composting; the separated oil can be used as raw materials for renewable industries oil recovery and utilization; although this method of recycling food waste or similar methods solves the problem of waste recycling and does not pollute the environment; but there are still some defects; Thoroughly, leading to low waste utilization rate and high energy consumption; and there are problems such as low efficiency of biogas resource utilization, complex biogas residue treatment methods, not environmentally friendly or high treatment costs

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