вибросито св1л 01

вибросито св1л 01 A difficult topic buried: find a good home for construction waste                             Inseparable from the economic take-off boost infrastructure construction, after all these years of extraordinary development, infrastructure landscape has undergone enormous changes. The rapid development of urban construction, the old building is on track to disappear from the urban album is sequential rise of a seat new, new buildings meet the urban atmosphere, the construction of high-speed railways, highways and other projects everywhere, but at the same time, a new issues before the people - the infrastructure has brought a lot of construction waste. According to statistics, the number of our construction waste accounted for 30% -40% of the total amount of municipal solid waste. Terms of 500-600 tons / square meters of standard projections, by 2020, China will add about 30 billion square meters of gross floor area of ​​new construction waste is a shocking number.Construction waste: misplaced resourcesPopular in the environmental community with this sentence: "this is not garbage in the world, only misplaced resources." Is very apt to understand this sentence construction waste.Definition of construction wasteNarrow in terms of construction waste is abandoned after the demolition of the old buildings and structures. Broadly defined construction waste including demolition of buildings down the brick; abandoned part; waste generated in the construction process of the building can not be re-used after the demolition of the old building, if they were not fully utilized wood floor mortar, concrete, metal products, steel head , steel, plastic products, hardware, etc.; soil the pit excavation based building construction, slope soil or gravel; types of waste generated in the home renovation process; the road renovation of waste generated most of the six.Construction waste classificationAccording to the source, construction waste can be divided into land excavation, road excavation, demolition of old buildings, construction and building materials production, five categories of trash, mainly by muck, gravel blocks, waste mortar, brick fragments concrete block , asphalt block, waste plastic, scrap metal material, waste bamboo, etc..The the land excavation construction waste is вибросито св1л 01divided into the topsoil and deep soil; road excavation waste into a concrete road excavation and asphalt road excavation, including the waste concrete block, asphalt concrete block; divided into bricks of the old building demolition waste and stone, concrete categories, the number is huge; construction waste into the waste generated by the remaining concrete, construction debris, as well as housing decoration; building materials production waste refers to waste generated by the production of various construction materials, waste residue, also includes fragments, debris, and other building materials finished in the processing and handling process.Construction waste hazardsThe face of a lot of building construction quality is not high, the floor YY "," House crunchy "have occurred, coupled with the" image projects "," achievement projects "arbitrarily C & D, resulting in the average life expectancy of Chinese architecture only 30 years, much lower than the developed countries in the United Kingdom 132 years and 74 years in the United States ... the various phenomena brought a large number of constrдробильно сортировочного оборудоuction waste to some extent, directly or indirectly, in phagocytic our environment. First, construction waste piling up at random occupation of a large number of production land; followed by the construction waste generated pollution of air, water, soil; the last construction waste stored in the open air or simply buried and transportation are mostly non-closed vehicles inevitably cause transport The garbage left behind in the process of withdrawal, dust and ash sand flying, and seriously affect the appearance of the city and landscape.Government to strengthen the management of construction wasteIn recent years, urban management department has the disposal of construction waste to be treated as people's livelihood event, to strengthen the management of urban construction waste, protect the city appearance and environmental sanitation, a number of initiatives have been put forward, from June 1, 2005, such as the implementation of the urban construction waste regulations, and its main contents include: construction waste disposal to implement the reduction, recycling, harmless and who produce, who bears the responsibility disposal principle; construction waste elimination, comprehensive utilization of facilities set should be incorporated into the city appearance and environmental Health professional planning.Of construction waste processing is divided into two categories, without any treatment of construction waste directly to the landfill, accounting for about 98%; mild sort out scrap metal, waste concrete, accounts for about 2% . Like the United States of construction waste sorting, processing and conversion, recycling almost zero. In the face of the government's strict management, these two approaches are no longer adapt to the requirements of the development of the times, and therefore is urgent to find a good home for construction waste.Construction waste: the hidden light "money" wayJapanese construction waste as a "building-products" attaches great importance as re-development and utilization of renewable resources, such as port facilities, as well as other renovation project infrastructure accessories, can make use of recycled stone, instead of a considerable number natural quarry gravel material;The U.S. government's "Superfund Law" stipulates that "any production of industrial waste have to properly handle, are not allowed to arbitrarily dump, limit the amount of construction waste generated from the source to promote enterprise consciously seek construction waste resources utilization pathways; in the Netherlands, more than 70% of the construction waste can be recycled, but the Dutch government wants to increase this proportion to 90%, so they developed a series of laws, establishing limit waste dump processing mandatory recycling run quality control system ... Overall, foreign in construction waste before the scientific and effective management and control of the reduction, construction waste generated by scientific means, it has renewable resources function.Construction waste can be reusedIn fact, construction waste can be used as renewable resources, re-use, and rational use of building waste not only environmental protection and energy saving, but also presents tremendous economic value to achieve a win-win situation.First, using the abandoned buildings of concrete and brick waste production of coarse and fine aшаровые мельницы производство авсggregate, can be used for the production of the corresponding strength grade concrete, mortar or preparation, such as blocks, wall panels, floor tiles and other building material products. Add coarse and fine aggregate curing like material also can be used for road pavement base.Second, the use of waste brick aggregate production, can be used for the production of recycled bricks, blocks, wall panels, floor tiles and other building materials products.Third, the muck can be used for road construction, pile filler, foundation.Fourth, for waste timber construction waste, not obviously damaged timber can direct re-used to reconstruct the buildings seriously damaged wooden members as wooden renewable raw materials or paper plate.Fifth, the abandoned road asphalt mixes directly according to the appropriate proportion of recycled asphalt concrete.Sixth, abandoned road concrete can be processed into recycled aggregate used in the preparation of recycled concrete.Seventh, scrap steel, scrap rebar and other scrap metal material can be directly re-use or recycled processing.Eighth, glass, plastic waste, waste ceramics and other construction waste, as the case distinction utilize.2. Renewable technology allows construction waste zero wasteAt present, China's construction waste recycling technology with certain technical basis. Order to better serve urban construction waste disposal, the Shanghai the Xuan World Engineering Technology Co., Ltd. in the years of crushing machine, sand and gravel production line equipment R & D experience, with the help of foreign advanced technology, pioneered mobile crusher station, based integration through integrated units, to convenient construction waste crushing processing. Construction waste sorting through specific iron removal equipment to remove iron containing substances, rough broken, broken, even crushing crushing equipment handling, processing and recycling into new building materials, mainly used for road construction, drywall, brick, turning waste into treasure.The Xuan World mobile crushing plant includes two series: tire mobile crushing plant and crawler mobile crushing station. The crushing station equipment and architecture are based on the most advanced steel research and development from customers can do one hundred percent assured quality. It has the following advantages:First, according to the source of raw materials to use to select the best production base;Second, according to the stone usage was available in a number of site turnover use or aggregation device in the shortest time to focus on feeding, reduce idle time of equipment;Third, installation, repair and maintenance is convenient;Fourth, automated operation, high efficiency;Fifth, all processes using the dust and noise reduction equipment to achieve real economic and environmental protection.