System process method for fertilizer making through perishable garbage fermentation

Abstract

The invention relates to the technical field of solid waste treatment, in particular to a system process method for fertilizer making through perishable garbage fermentation. The system process methodcomprises the steps: to-be-treated garbage is crushed and separated firstly, and refractory organic matter is removed; and then water is added to adjust the solid content of the garbage, slurry is prepared, and micron bubbles are introduced into the slurry. The refractory organic matter such as plastic and fabrics and imputrescible inorganic matter such as glass, ceramic, gravel and metal are removed to the greatest extent; the content of the heavy metal in garbage derived fertilizer can be effectively decreased and stably controlled, the uncertainty of the content of the heavy metal in the garbage derived fertilizer is eliminated, and convenience is provided for application of the garbage derived fertilizer; and the content of the organic matter and the content of the water in sinking and separated muddy sand materials with the large specific gravity are low, and the sinking and separated muddy sand materials with the large specific gravity meet the requirements of being subjected todirect landfill and used as raw materials of building materials.

Description

technical field [0001] The invention relates to the technical field of solid waste treatment, in particular to a systematic process method for fermenting perishable garbage to make fertilizer. Background technique [0002] With the implementation of the national waste classification policy, wet waste (mainly kitchen waste), kitchen waste, and waste from vegetable and fruit professional markets will be separated from domestic waste first. show up. The high moisture content of these garbage is usually 60% to 90%, mixed with plastic, fabric, paper, bamboo and wood, etc. Metals such as covers, and even toxic and hazardous wastes such as batteries and light tubes. The sorted wet garbage and the perishable garbage in the vegetable and fruit professional market have high moisture content, fast spoilage and deterioration, odor emission and leachate outflow, which bring huge pollution to the environment, which has long plagued the improvement of residents' lives and urban environme...

AI Technical Summary

Problems solved by technology

In the prior art, there is also separation and treatment of materials before fermentation to reduce the migration of harmful components such as non-organic matter in waste materials or heavy metals in refractory materials during the fermentation process. The traditional method is to add water to the materials to be treated After natural sedimentation treatment, the separation of each component cannot be realized quickly, the efficiency is too low, and there is no engineering value

The improved method on the basis of the traditional method is to achieve separation by simply blowing gas. Although this separation can improve the separation efficiency to a certain extent, it is difficult to completely separate the fine plastics, fabric fluff, and mud and sand, resulting in separation. In the organic matter, mud, sand, refractory plastics, fabrics and other materials are still mixed, and the organic matter content in the mud and sand is high, the quality of the material after aerobic fermentation cannot be guaranteed, and the settled mud, sand and other materials do not meet the landfill standards and cannot be directly landfilled

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