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Challenges Facing Municipal Waste Shredding

Challenges Facing Municipal Waste Shredding Lack of technical adaptability is a primary challenge. Existing shredding equipment is mostly designed for specific materials. Hard impurities in mixed waste, such as building debris and metal parts, can easily cause tool wear and even equipment damage. Hard organic matter like bones and shells in kitchen waste can increase shredding energy consumption by 40%, while flexible materials like plastic bags can easily entangle the spindle, reducing efficiency. Further complicating matters, my country’s waste sorting system is still incomplete, and pre-treatment costs for unsorted mixed waste account for over 35% of total processing costs. The risk of secondary pollution is a constant threat. Fine particles (PM2.5-10) generated during the shredding process can easily escape dust collection systems. Experimental data shows that bacteria levels in untreated shredding exhaust can reach 100,000 times that of ambient air. Dioxin precursors released by mechanical forces from chlorinated plastics can directly generate toxic substances through high-temperature friction. A pilot project in Shanghai experienced a blockage in the leachate collection pipe, resulting in ground pollutant levels exceeding the permitted level by 87 times. Addressing these challenges requires building a technological innovation system: developing self-cleaning, anti-entanglement cutter assemblies, integrating a linked system...

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How is municipal waste handled?

How is municipal waste handled? Municipal waste disposal is a core component of modern urban management, aiming to minimize environmental pollution while maximizing resource recycling. According to current waste management regulations, mixed waste in residual waste bins undergoes a systematic processing process—from sorting and recycling, pollutant separation, to final energy conversion. Each step must strictly adhere to regulatory requirements to achieve the principles of “reduction, resource utilization, and harmlessness.” The waste in residual waste bins is typically the mixed waste remaining after initial sorting, but it still contains a significant amount of recyclable materials (such as plastics, paper, and cardboard). Processing companies’ primary task is to meticulously sort these materials according to local regulations and industry standards. For example, clean plastic bottles (such as PET) and uncontaminated paper and cardboard can be separated through mechanical or manual sorting and directly fed into the recycling system. After cleaning, shredding, melting, and other processes, these materials can be remade into packaging containers, building materials, or industrial raw materials, reducing reliance on virgin resources. Mixed waste often contains non-recyclable contaminants (such as plastic film contaminated with food residue, oily paper towels, and metal-plastic composites). These foreign materials can reduce the quality of recycled...

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What types of waste are included in urban waste?

What types of waste are included in urban waste? Municipal residual waste refers to the mixed waste that remains after initial sorting, collection, and processing. It has a complex composition and typically includes the following categories: Organic waste • Kitchen scraps: Leftovers, fruit peels, bones, vegetable roots and leaves from households and restaurants. This type of waste has a high water content, is easily decomposed, emits unpleasant odors, and breeds bacteria and pests. • Garden waste: Dead branches and leaves, pruned branches, lawn clippings, and other items generated during urban landscaping maintenance. The amount of this waste varies seasonally, with higher volumes generated during the leaf-shedding season in autumn and winter and the lawn mowing season in spring. Inorganic waste • Waste paper: Newspapers, magazines, books, wrapping paper, and paper boxes that have not been effectively recycled. Heavily contaminated paper that is difficult to recycle also falls under the category of residual waste. • Plastics: Various plastic bags, plastic film, disposable plastic tableware, plastic toys, and plastic packaging materials. Some plastic products that are contaminated or mixed with other materials are difficult to recycle and are often treated as residual waste. • Glass: Broken glass bottles, glasses, window shards, etc....

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Advantages of Modern Industrial Shredders

Modern industrial shredders are core equipment for industrial solid waste treatment and resource recovery. By leveraging multi-axis shearing and shredding technology, intelligent control, and environmentally friendly design

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Modern Industrial Shredder

A modern industrial shredder is a highly efficient, intelligent, and versatile material shredder designed specifically for processing various types of industrial waste, bulky scrap, or high-hardness materials.

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Modern Twin-Shaft Shredder

A modern twin-shaft shredder is a highly efficient and intelligent industrial shredding device. Using staggered blades mounted on two parallel rotating shafts (a rotating and fixed blade shaft or dual rotating blade shafts)

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Recycling Process of MRF (Material Recovery Facility) factory

MRF (Material Recovery Facility) shredder is a kind of equipment used for material recycling and processing.

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MRF Shredder

Applicable Material : Solid Waste, Municipal waste, Industrial Waste, cars, cans, plastic bottles, paper tape, cartons and certain fiber products,wood, metal, glass, plastic blocks

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