Waste home appliances and waste circuit boards recycling technology

With the rapid development of society, the amount of waste has increased by about 10% per year, and various solid wastes have produced a large number of pollutants that threaten people's health. "Garbage and solid waste siege" has become a public problem faced by cities. With the waste of resources, the prominence of carbon dioxide and environmental pollution, the national goal is to make solid waste and garbage harmless, low-carbon and resource-based. The harmless recycling of various wastes is one of the best ways to reduce pollution and greenhouse gases such as carbon dioxide. The rational and effective development and utilization of various urban wastes and plant-based harmless resource conversion is an indispensable condition for building ecological and environmental protection. Today, when resources are becoming increasingly scarce, especially the innovation of urban mineral resource recycling and treatment technology, improving the recycling rate of waste resources has become a problem that needs to be solved in building my country's low-carbon environmental protection and sustainable development.

Environmental necessity: from pollution prevention and control to ecological restoration

Reduce landfill and incineration pollution

Traditional landfill and incineration lead to environmental risks such as heavy metal leakage and dioxin emissions. For example, France has increased the dust removal rate of waste incineration plants to 99% through flue gas purification technology, and dioxin emissions are almost zero; Shanghai Shidongkou Sewage Treatment Plant supplies recycled water to waste incineration power plants, saving 5.5 million cubic meters of reservoir water annually and reducing water pollution.

Blocking the spread of toxic substances

If heavy metals such as lead and mercury in electronic waste are not pre-treated, they will harm the environment for a long time. China has achieved a recycling rate of over 95% through circuit board crushing and sorting technology. One ton of mobile phone circuit boards can extract 300 grams of gold, far exceeding the grade of gold mines.

Helping carbon emission reduction goals

Resource utilization can significantly reduce carbon emissions. For example, recycling 1 ton of aluminum can reduce 9 tons of CO₂ emissions, and the carbon emissions of the metal regeneration process are only 10%-30% of the original production. Thailand processes 180,000 tons of domestic waste each year through waste-to-energy projects, converting it into clean electricity to alleviate energy shortages.

Resource necessity: Alleviating resource shortages and energy dependence

Replacing primary resource mining

Ningxia Communications Investment Group uses industrial solid waste such as steel slag and coal gangue for highway construction, replacing natural sand and gravel, and the solid waste utilization rate of the entire line reaches 100%, reducing the demand for mineral mining.

Improve energy self-sufficiency

97% of France's 127 waste incineration plants have achieved energy conversion, providing electricity and heating for hundreds of thousands of households; Thailand uses waste-derived fuel technology to convert kitchen waste into electricity, and plans to achieve a processing scale of 1,000 tons/day in 2024.

Promote the closed loop of circular economy

Shanghai Chengtou Water has connected the water resource circulation chain through the "wastewater treatment-recycling-industrial reuse" model; Costa Rica has incentivized garbage sorting through "ecological coins", and recycled plastic bottles are used to produce synthetic fibers, forming a "waste-renewable resources-product" closed loop.

Economic and social necessity: industrial upgrading and improvement of people's livelihood

Reduce processing costs and create new industries

China plans to achieve an annual output value of 5 trillion yuan in the resource recycling industry by 2025, with a significant increase in the proportion of recycled materials. Ningxia's solid waste road project has driven the formulation of technical standards and the development of supporting industries, forming replicable industrialization experience.

Promoting employment and urban-rural coordination

The resource utilization of construction solid waste can extend the industrial chain and increase employment opportunities; the Chinese Academy of Agricultural Sciences cultivates social service entities and promotes a green farming and breeding cycle model through returning straw to the field and treating manure.

Improving people's livelihood and urban management

Shanghai has improved the treatment efficiency of wet garbage, sludge, etc. through the construction of a "zero-waste city"; Jinan plans to achieve a comprehensive utilization rate of 81% for livestock and poultry manure by 2025, improving the rural living environment by 1315.

Policy and technical support: global experience and China's actions

Policy-driven goal implementation

The State Council's "Opinions on Accelerating the Construction of a Waste Recycling System" clearly stated that the utilization rate of bulk solid waste will reach 57% in 2025, and the output value of renewable resources will exceed 5 trillion yuan; France has passed legislation to force garbage classification, and the per capita garbage volume has dropped by 4.6% in ten years.

Technological innovation breaks through bottlenecks

Tongji University has developed a carbon-pollution synergistic treatment technology for organic solid waste to improve resource efficiency; Ningxia Jiaotong Group has conquered the technology of all-solid waste-based cementitious materials to achieve large-volume application of industrial solid waste.

Adapting measures to local conditions and coordinating with multiple parties

Construction solid waste needs to be "classified and demolished, and used according to materials"; through the "whole county promotion" model, the comprehensive utilization rate of straw reaches 88%, and the utilization rate of livestock and poultry manure exceeds 79%.

Future Outlook: From "pollution control" to "resource revolution"

By 2030, China plans to achieve the world's leading level of waste resource utilization, and the proportion of recycled materials will increase significantly. With the application of the Internet of Things and AI technology, waste management will move towards intelligence, forming a full-chain system of "source reduction-efficient recycling-high-value utilization".

Waste resource utilization is not only an "emergency medicine" for environmental governance, but also a "heart tonic" for economic transformation. As experts said: "The essence of the solid waste problem is a problem of development mode, and resource utilization is a revolution related to the future of mankind."