Integrated ecological treatment method for domestic garbage

Abstract

The invention relates to an integrated ecological treatment method for domestic garbage, comprising the following steps: classifying domestic garbage to obtain recyclable materials and organic matters; pulverizing, drying and dewatering the organic matters; decomposing the treated organic matters to obtain decomposition products; treating the decomposition products, and storing the energy generated during the treatment process of the decomposition products by phase change materials; applying the energy stored in the phase change materials to the work of different equipment, which includes cooling equipment, heating equipment and power supply equipment of urban communities. According to the integrated ecological treatment method, after the domestic garbage is classified, recyclable plasticarticles and metal materials are recovered and reused, the organic matters are treated by thermal decomposition or hydrolysis to obtain the decomposition products, which are then used for heating andpower generation, and heat is stored by the phase change materials; environmentally-friendly disposal of the domestic garbage is achieved, the treatment cost is reduced, and resources generated afterthe treatment of the domestic garbage are effectively used.

Description

technical field [0001] The invention relates to a garbage treatment method, more specifically a comprehensive ecological treatment method for domestic garbage. Background technique [0002] Household garbage refers to the garbage generated in people's daily life, which is generally mixed garbage with complex components. [0003] Existing three kinds of garbage treatment methods, one is landfill method, although this treatment method has less investment, simple process, large processing capacity, and better realizes the harmlessness of the ground surface, but the landfilled garbage has not been harmlessly processed. Harmful treatment, a large number of bacteria and viruses remain, and the seepage of garbage will pollute groundwater resources. Not only has the recycling of garbage not been realized, but a large amount of land has been occupied. At present, the sanitary landfill method cited in some areas only partially solves the problem of groundwater pollution prevention an...

AI Technical Summary

Problems solved by technology

[0003] Existing three kinds of garbage treatment methods, one is landfill method, although this treatment method has less investment, simple process, large processing capacity, and better realizes the harmlessness of the ground surface, but the landfilled garbage has not been harmlessly processed. Harmful treatment, a large number of bacteria and viruses remain, and the seepage of garbage will pollute groundwater resources. Not only did the recycling of garbage not be realized, but also a large amount of land was occupied

At present, the sanitary landfill method cited in some areas only partially solves the problem of groundwater pollution prevention and recovery, and there is still a considerable distance to completely solve the drawbacks of the project. Many developed countries have explicitly banned landfilling

The second is the waste incineration and incineration power generation method. Although the waste can be treated thoroughly and quickly, it can also realize the waste resource treatment. Simple incineration will pollute the atmosphere. If the harmful gas is treated, the investment and operation costs will be quite expensive. Moreover, At present, the composition of urban domestic waste in our country is complex and the calorific value is low, so a large amount of auxiliary fuel needs to be added, resulting in the construction of factories in many areas, but the operation is not feasible, and this method is also limited by the processing capacity, so the general small and medium-sized cities in my country are very interested in the construction of this technology project powerless

The third is the composting method, which has the advantages of less investment and easy operation, but has fatal disadvantages, such as long composting time, usually three weeks to one month, serious accumulation pollution; incomplete degradation of organic matter, insufficient treatment, residual Composting will still cause garbage pollution; composting products have many impurities and cannot effectively separate harmful substances such as heavy metals. Long-term use of composting products will cause soil surface deposition, damage the soil, and endanger crops; during the composting process, most nitrogen nutrients are naturally Released, phosphorus, potassium and other compounds are naturally degraded, so the quality of the fertilizer is low, the majority of farmers are unwilling to pay attention to it, and the market prospect is slim

[0005] To sum up, the existing garbage disposal methods pollute groundwater resources, produce harmful gases, and there are too many garbage transporters and too far away, so the resources after garbage treatment cannot be effectively utilized.

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