Urban and rural waste treatment method

Abstract

The invention relates to urban and rural waste treatment and utilization, in particular to an urban and rural waste treatment method. The method comprises the following steps: sorting and classifying wastes; smashing organic wastes and then adding a microbial starter, and adding straw or sawdust to regulate water content; after stirring, carrying out anaerobic fermentation in a fermentation tank, and using the anaerobic-fermented product as feed for fly larvae and earthworm breeding; collecting residues of fly larvae and earthworm breeding, and composting and fermenting to prepare organic fertilizers. Combustible wastes are incinerated through an incinerator to supply heat for the fermentation tank, fly larvae and earthworm breeding rooms and composting fermentation equipment. The method carries out resource utilization, innocent treatment and reduction landfill for the wastes and fundamentally controls the secondary pollution caused by the direct landfill, incineration and composting of wastes.

Description

technical field [0001] The present invention relates to waste, in particular to waste treatment and utilization. Background technique [0002] Urban and rural waste refers to the collection of domestic garbage, human and animal manure, market garbage, various types of food, leftovers from non-staple food processing plants, etc. Today, there are landfill, incineration, and composting methods for its treatment. These methods have their own disadvantages . One is landfill, although it can absorb a large amount of waste, it is easy to cause secondary pollution of groundwater resources for a long time, and also produces harmful gases such as methane, which will consume a lot of land; the other is incineration, which is an incineration plant for pure waste The construction and production costs are quite expensive, which will bring a huge economic burden to the local government. At the same time, the pure waste contains a large amount of inorganic and water-containing substances. ...

AI Technical Summary

Problems solved by technology

One is landfill, although it can absorb a large amount of waste, it is easy to cause secondary pollution of groundwater resources for a long time, and also produces harmful gases such as methane, which will consume a lot of land; the other is incineration, which is an incineration plant for pure waste The construction and production costs are quite expensive, which will bring a huge economic burden to the local government. At the same time, the pure waste contains a large amount of inorganic and water-containing substances. When the incineration temperature does not meet the requirements, it will produce harmful substances such as dioxin, which is very toxic. Cause secondary pollutants to the environment; the third is composting, the organic matter in the waste is pre-treated, the main fermentation, post-fermentation, post-treatment, deodorization and storage processes, and the organic matter is turned into fertilizer. It can achieve the purpose of recycling, but the amount of domestic waste composting is large, the overall nutrient content is low, and the production site needs to be used for a long time. It is also easy to cause deterioration of groundwater quality, and waste water and waste gas that pollute the environment are also produced during composting fermentation. Therefore, composting The scale cannot be enlarged, and only about half of the total waste can be used for composting, while the other half still needs to be landfilled or incinerated

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