Comprehensive cyclic utilization and treatment method for municipal waste

Abstract

The invention discloses a comprehensive cyclic utilization and treatment method for municipal waste, belonging to the technical fields of comprehensive treatment of municipal refuse and cyclic reutilization of resources. The comprehensive cyclic utilization and treatment method comprises the following steps: (1) building a farm, an excrement treatment pond, a forest zone and a refrigeration house; (2) collecting waste in a classifying manner; (3) transporting the classified and collected kitchen waste to the refrigeration house for centralized treatment, particularly transporting classified and collected recyclable waste, unrecyclable waste and harmful waste to a waste treatment plant for sorting; (4) extracting grease from bones and grease of livestock, and making squeezed bone dreg into bone meal; (5) transporting fresh residual vegetables, food residues and soup, melon shells and fruit shells in the refrigeration house to the farm for use; (6) transporting excrement waste and livestock bristles to the excrement treatment pond built in the farm; and (7) transporting agricultural products produced in the farm to a city to meet city living needs, and cyclically treating and utilizing the produced waste according to the previous steps.

Description

technical field [0001] The invention belongs to the technical field of comprehensive treatment of urban garbage and resource recycling, and in particular relates to a treatment method for comprehensive recycling of urban garbage. Background technique [0002] Garbage is an appendage of urban development. The operation of cities and people produces hundreds of millions of tons of garbage every year. On the one hand, there is the ever-growing urban garbage, and on the other hand, the unbearable stench of garbage, which has become a thorny problem in urban garbage disposal. [0003] Due to the complex composition of urban waste and the influence of economic development level, energy structure, natural conditions and traditional habits, it is difficult to have a unified model. The treatment methods of urban waste generally vary with national conditions, and often different treatment methods are adopted in different regions of a country, but in the end, the treatment goals are h...

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Problems solved by technology

However, landfill treatment has some disadvantages: (1) It occupies a large amount of land resources, making it difficult to select a new landfill site; (2) If the landfill leachate is not properly treated, it will pollute the surrounding environment such as soil and groundwater; ( 3) Methane and other gases produced by fermentation of landfill garbage are not only a fire and explosion hazard, but also aggravate the greenhouse effect

However, the current development prospects of composting in my country are not ideal. Due to high processing costs and poor product sales, most waste composting sites are in a state of shutdown.

[0005] For a long time, most cities in my country have adopted the original methods of open-air stacking (causing stench), natural ditch filling, and pit filling to deal with urban waste, which not only encroached on valuable land resources, but also caused potential impacts and harms on the environment; usually sanitation vehicles Long-distance transportation of the compressed garbage at the compression stations at various locations to landfills or incineration sites, and the ashes after incineration need to be transported to the landfill for landfill, which not only consumes manpower and material resources, but also wastes recyclable garbage resources

Food waste in many places is recycled and transported to oil refineries for oil refinery. First, it is sorted by machine, and the fine materials are used for oil refining. The coarse materials are returned to garbage trucks, compressed, and then transported to landfills for landfill. The transportation of waste is labor-intensive and does not make full use of reusable waste

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