How to understand solid waste as a misplaced resource

Solid waste treatment usually refers to the process of converting solid waste into suitable for transportation, storage, utilization or disposal through physical, chemical, biological, physicochemical and biochemical methods. The goal of solid waste treatment is to make it harmless, reduce, and recycle. The main methods currently used include compaction, crushing, sorting, solidification, incineration, biological treatment, etc.

1) Compaction technologyCompaction is a pretreatment technology that reduces the volume of waste, reduces transportation costs and prolongs the life of landfills. Compaction is a commonly used method of solid waste pretreatment. For example, automobiles, cans, plastic bottles, etc. are usually compacted first.

Solid wastes suitable for compaction and volume reduction treatment also include garbage, loose waste, paper tape, cartons and some fiber products. Compaction is not appropriate for wastes that may damage compaction equipment, and some wastes that may cause operational problems, such as tar, sludge or liquid materials, are generally not suitable for compaction.

2) Crushing technologyIn order to reduce the size of waste entering incinerators, landfills, composting systems, etc., solid waste must be crushed in advance. The crushed waste, due to the elimination of large voids, not only makes the size uniform, but also the texture uniform, and it is easier to compact during the landfill process. There are many crushing methods for solid waste, mainly impact crushing, shear crushing, extrusion crushing, friction crushing, etc., in addition to special low-temperature crushing and wet crushing.

3) Sorting technologySolid waste sorting is an important means to realize the recycling and reduction of solid waste, and the useful ones are fully selected and utilized through sorting, and the harmful ones are fully separated; The other is to separate waste at different particle levels. The basic principle of sorting is to take advantage of the differences in certain properties of materials to separate them.

For example, the difference between magnetic and non-magnetic properties in waste is used for separation; Separation is carried out by using particle size and size differences; Separation by means of the difference in specific gravity, etc. According to different properties, various machinery can be designed and manufactured to sort solid waste. Sorting includes manual sorting, screening, gravity sorting, magnetic sorting, eddy current sorting, optical sorting, etc.

4) Curing treatment technologyCuring technology is a harmless treatment process that immobilizes or contains hazardous solid waste in an inert curing substrate by adding a curing substrate to the waste. The cured product should have good permeation resistance, good mechanical properties, as well as leachability, dry-wet, and freeze-thaw resistance.

There is also the sludge discharged from the urban sewage plant, which contains a certain calorific value, if it is added to the cement kiln for calcination, the heat can be utilized, reduce coal consumption, and the ash after incineration is mixed into the cement as the composition of cement to reduce the consumption of natural resources. However, in many places, sludge is pulled to landfills, which pollutes the environment and occupies land resources, which is misplaced resources.

From a spatial point of view, solid waste has no use value in relation to a process or aspect, but not in all processes and in all respects. In other words, the waste of one process can often be used as a raw material for another process; Waste from one location may also become feedstock at another.

The landlord, it's very understandable, the glass bottle is garbage, **after remelting and reprocessing may be a handicraft, paper items**, or can be made into paper, boxes or something! It's OK if you think about it.

Solid waste refers to the solid and semi-solid waste materials generated by human beings in production, consumption, life and other activities"Garbage"。

It mainly includes solid particles, garbage, slag, sludge, discarded products, broken utensils, defective products, animal carcasses, spoiled food, human and animal manure, etc. In some countries, high-concentration liquids such as waste acid, waste alkali, waste oil, and waste organic solvents are also classified as solid waste.

The generation and discharge of solid waste is accompanied by the continuation of human society, and waste will be generated in the production, distribution, exchange and consumption links of socialized production.

Solid waste will also be generated in the planning, design, raw material procurement, manufacturing, packaging, transportation, distribution and consumption of products in the product life cycle, even if the reverse production and corresponding reverse logistics processes using solid waste will also generate solid waste.

Solid waste will be generated in various functional areas of land use, such as residential areas, commercial areas, industrial areas, agricultural areas, municipal facilities, cultural and entertainment areas, and outdoor open spaces; Any individual, enterprise, institution, organization and social organization in the whole society will generate and discharge solid waste.

Solid waste refers to the solid and semi-solid waste materials generated by human beings in production, consumption, clear and wide life and other activities"Garbage"。

It mainly includes solid particles, garbage, slag, sludge, waste products, damaged utensils, defective products, animal carcasses, spoiled food, human and animal manure, etc. In some countries, high-concentration liquids such as waste acid, waste alkali, waste oil, and waste organic solvents are also classified as solid Qiaopai waste.

The generation and discharge of solid waste will continue with the social response of human beings, and waste will be generated in the production, distribution, exchange and consumption of socialized production.

Solid waste is also generated in the planning, design, raw material procurement, manufacturing, packaging, transportation, distribution and consumption of products in the product life cycle.

Solid waste refers to the solid and semi-solid waste materials that pollute the environment and are discarded because they cannot be used in a certain time and place.

In any production or life process, the owner of raw materials, commodities or consumer goods, often only use some of the active ingredients, and for the original owner no longer has the use value of most of the solid wastes still contain the components needed in other production industries, after a certain technical link, can be transformed into production raw materials in the relevant departments and industries, and can even be directly used.

It can be seen that the concept of solid waste is relative with the change of time and space. Promote the social recycling of resources, with the aim of making full use of resources, increasing social and economic benefits, and reducing the amount of waste disposed of for the benefit of social development.

Solid waste can be recycled

Answer]: The principles of solid waste pollution prevention and control include: Reduction, through cleaner production, minimize the amount of solid waste generated; Recycling, through comprehensive utilization, so that the valuable solid waste into treasure, to achieve the recycling of resources; Harmless, that is, safe disposal, the final disposal of solid waste with no use value (incineration and landfill) should be carried out under strict management control and in accordance with specific requirements to achieve environmentally friendly safe disposal, and the realization of safe disposal is to realize the final destination of the waste.

Solid waste can be divided into usable and non-usable, if the skin can not be used, waste batteries can be used; Waste batteries, peels, waste plastics, glass bottles, etc. are all solid wastes in the family, among which waste batteries, waste plastics, and glass bottles can be used

Answer: Solid waste should be classified according to whether it can be classified; Solid waste in the household includes: waste batteries, fruit peels, waste plastics, glass bottles, etc.; Waste batteries, waste plastics, and glass bottles can be used