Traditional methods of construction waste treatment mainly include stacking, landfilling, backfilling, etc., but these treatment methods will have a great impact on the environment, such as soil pollution, groundwater pollution, air pollution, etc. The stacking and landfilling of construction waste requires a large amount of land, and the toxic and harmful substances released will change the physical structure and chemical properties of the soil, causing soil pollution; the polluted soil will form leachate into the water body when washed by rainwater, which is easy to cause groundwater and surface water pollution; construction waste stacked in the open air is more likely to cause dust, and the large amount of exhaust gas emitted during the transportation of muck trucks and the dust caused by road spillage have aggravated air pollution.

In recent years, the recycling of construction waste has become a new attempt, and they can be reused after processing. For example, metal waste, waste steel bars, waste iron wire, waste electric wire, etc. can be sorted, recycled and hot-processed to make steel and other metal products; waste concrete can be crushed, screened and made into recycled aggregate for roadbed and wall filling materials, and can also produce porous bricks, hollow slabs, hollow blocks, cement raw materials and other products; waste wood can be used to make synthetic boards; asphalt can be recycled to asphalt.

Concrete is the part with the highest recycling value in construction waste. The recycled aggregate generated by waste concrete is very popular in the market due to its high strength and low production cost. The recycled aggregate has a high foundation bearing capacity after mixing and rolling according to a certain gradation. It can be directly used in soft foundations, shaft backfill, roadbed cushion, water treatment, site dust suppression and other projects; it can also partially or completely replace natural aggregates to produce recycled inorganic mixtures, recycled bricks, recycled concrete and other products.

In order to achieve environmental protection of construction waste, it is also necessary to reduce the amount of construction waste generated at the source, vigorously develop and promote new energy-saving and consumption-reducing construction technologies and processes, and adopt structural designs that generate as little construction waste as possible; increase investment in the comprehensive utilization of construction waste, limit the use of natural aggregates and stones, introduce corresponding preferential policies, encourage the use of recycled materials, alternative materials and easily recyclable materials, etc., and minimize the generation of construction waste from the source. At the same time, relevant departments can vigorously promote the application of recycled products, promote recycling, call on municipal, garden, transportation, water and other projects to take the lead in using construction waste recycling products, and encourage social investment projects to use construction waste recycling products.

Through the recycling of solid waste resources, the utilization rate of construction waste can be greatly improved, the transportation and space storage problems of construction waste can be effectively alleviated, it has high flexibility, low carbon and energy saving, close to the ideal environmental protection requirements of near zero pollution and zero emissions, and contribute to the country's realization of the "dual carbon" goal.