Trash is handled in two categories: recyclable and non-recyclable.
1. For recyclable garbage, the most common treatment at this stage is recycling, processing and reuse. We first have to classify and screen the recyclable garbage and select those that are suitable for recycling and reuse. After that, different types of garbage will be transported to different garbage recycling and processing plants for further processing. Taking paper as an example, recycled old paper will be centrally shredded, made into pulp, and bleached to generate new paper.
2. For non-recyclable waste, we need to take it more seriously. For toxic and hazardous non-recyclable waste, we often use incineration and curing. When non-recyclable waste is not potentially hazardous, we tend to landfill it (and occasionally burn it).
Also, composting is an effective way to treat non-recyclable waste, especially household waste. Domestic waste is piled into heaps, kept at a constant temperature of 70°C for storage and fermentation, and organic matter is broken down into inorganic nutrients with the help of the microbial decomposition ability in the waste. After composting, domestic waste can be turned into hygienic, odorless humus.
Expanded Information:
Waste classification has become an unstoppable trend of the times. According to the spirit of the relevant documents of the Ministry of Housing and Construction, by the end of 2020, 46 key cities should be basically built garbage classification and treatment system, and by the end of 2025, the national prefectural-level and above cities should be basically built garbage classification and treatment system.
In this regard, all over the world are exploring some effective ways to categorize garbage. The reporter saw that in recent years, the integrated application of the Internet, big data, artificial intelligence and other emerging technologies is also becoming an important way to tap the diversified value of the renewable resources sector.
People's Daily Online - Approaching recyclable and non-recyclable waste