特级丰满少妇一级AAAA爱毛片,成人理伦A级A片,久久久91人妻无码,黄色av免费观看,国产精品老熟女高潮

       Relevant statistics show that in 2018 and 2019, the amount of construction waste generated in the 35 domestic construction waste treatment pilot cities was 1.31 billion tons and 1.37 billion tons, respectively, and the total amount of construction waste in the country was not less than 3.5 billion tons per year.

        Construction waste is all kinds of wastes such as spoils and materials generated in the process of new construction, reconstruction, expansion and demolition of various buildings, structures, municipal pipe networks and residential decoration and decoration houses. According to the source, construction waste can be divided into 5 categories: engineering muck, engineering mud, engineering waste, demolition waste, and decoration waste. The main components of construction waste include: waste concrete, waste masonry, waste mortar, muck and other inorganic non-metallic materials; waste steel bars and other metal materials; waste wood, waste plastics and other organic materials and other waste materials.

        According to the editor of Chongqing Longjian Industrial Group, the current object of construction waste recycling is inorganic non-metallic materials mainly composed of waste concrete and masonry, mainly from demolition and construction waste. Of the total construction waste, demolition waste accounts for about 20%, and if engineering waste and decoration waste are added, it can account for about 30%.

        Waste concrete and waste masonry in the components of demolition construction waste are the main sources of recycled aggregate. At present, the amount of demolition waste used in the production of aggregates, profiles and other recycled products in China's construction waste accounts for about 8% of the total construction waste ratio. Compared with foreign countries, recycled aggregates in the United Kingdom and other countries have accounted for 20% of all construction aggregates. Belgium proposed that by 2050, all recycled aggregates will replace natural aggregates. As long as we adhere to the direction of recycling construction waste, the proportion of recycled aggregate in construction aggregate in China will gradually increase. At a certain historical stage, construction waste will certainly become the main source of construction aggregate.

        Under the correct guidance of the national policy of green development and sustainable development proposed by the Party Central Committee and the State Council, and under the vigorous promotion of the Ministry of Housing and Urban-Rural Development, after more than 10 years of development, the construction waste recycling industry has continuously expanded its area and has more and more facilities. The level of technical specialization has also gradually improved.

        It is estimated that the processing capacity of construction waste recycling facilities nationwide is more than 500 million tons per year, and the output capacity of recycled aggregates is more than 350 million tons per year. If the production capacity is fully utilized, it can become an important source of alternative natural gravel aggregates.

The working site of the Kross mobile crushing station of Chongqing Longjian Industrial Group

        In general, China's construction waste management and resource utilization work is still in its infancy, facing many difficulties and problems. With the successful launch of many mobile crushing stations in China, many investors see business opportunities, mobile crushing stations are promising, and continue to be widely used in various urban construction waste resource utilization projects, and won unanimous praise from the industry. Correspondingly, it also promoted the vigorous research and development and upgrading of mobile crushing station manufacturers.

        In the future, relevant supporting policies will be issued from the aspects of project construction resource recycling project disposal, disposal costs and product export, to support the development and virtuous cycle of the construction garbage resource utilization industry, and strengthen the implementation of the system for the payment of construction waste dischargers and the benefit of the processor Promote the source classification of construction waste, continue to carry out capacity building and technological innovation in disposal facilities, renewable product development, etc., open up the application of recycled products, improve the corresponding standard system, accelerate the production of recycled construction waste, and effectively improve the recycling of construction waste Use level to ease the contradiction of gravel supply.