Japan’s aim is to preserve the environment with the introduction of waste management and recycling technologies, which effectively turn waste into resources or appropriately dispose it. The growth in Japan’s economy, industrialization, increasing population, and depletion of natural resources has led to establishment of the waste processing plants. The country has developed a system to collect and transport waste, process it through intermediary treatment by incineration and other methods, and then dispose it in landfills in a sanitary manner to prevent environmental pollution.
Medical waste, construction waste, industrial waste, nuclear waste, solid household waste, sanitary waste, PET bottle waste, waste from home appliances, are a few types of waste that have high quality recycling that is ecologically safe. Japan’s yearly plastic waste is roughly estimated at ten million tons/year which is mechanically recycled and thermally treated. Similarly, many other waste products are recycled and reused in Japan. Majority of the Japanese homes are built up of wood. During unforeseen natural calamities, the houses in Japan are destroyed. The wood waste acquired from the demolished houses is general timber and is categorised under construction waste. This waste is used as a primary fuel in wood biomass boilers in various manufacturing industries such as power plants.
The Ishizaka recycling factory in Japan is an outrageous waste processing plant. It is the world’s most advanced, most beautiful big building with big diggers and grabbing machines which are all electric run. There are rainwater sprayers everywhere to keep the dust down and materials are sorted right down to insanity. The factory has a huge conveyer belt and the materials go round and round until the belt is empty. Wood is separated and made into different levels of wood fibers for different jobs. Iron, brass, copper and other metals are recovered with big magnets.
Ishizaka Sangyo Kabushiki Co. Ltd., is a 46-year-old company with top-class manufacturing technology among industrial waste disposal businesses. “Segregate and classify” technology is the company’s strength, which enables recycling of up to 97% of construction waste in Japan. Construction waste from demolished or renovated old buildings is recycled as construction materials for the roadbed used in the Japan’s social infrastructure constructions.
According to the report, “Waste Processing Plants (Construction) in Japan: Market Analytics by Category & Cost Type to 2021”, the implementation of the Construction Waste Recycling Law in Japan has led to the increase in the recycling rate of construction waste touching above 85%. TAKEEI is another leading facility in Japan that mainly handles construction waste and is an integrated management system involving collection, transportation, recycling and final disposal. TAKEEI has also developed various recycled products and raw materials by building a network with many companies related. Recycling of any of the material starts from source separation at a generation site. Once waste is mixed, recycling becomes difficult due to foreign materials attached to the waste materials. In an intermediate treatment facility, recycling is carried out and while some materials are so tough to recycle and are forced to be properly disposed.
The concrete and asphalt are large quantities of waste with high specific gravity. The other construction wastes are of less quantity with low specific gravity. Recycling of construction waste is encouraged to reduce the generation of mixed waste that can be liable for improper disposal or land-filling. The average quantity of the mixed construction waste in the domestic waste is from 9% to 36%. The exclusive recycled product made from the unique technology in Japan is “Eco-foam”. Waste plastic, wood, and dust are mixed and pelletized has been jointly-developed by TAKEEI and Nippon Steel Corporation. Dust generated in any treatment processes is used for land-filling. The construction waste generated is half of what is related to civil engineering works.
The annual construction waste generated in Japan has reached crossed million tons. Construction waste has many sources and waste is generated in less quantity in time periods. A system was developed in Japan that includes four aspects such as sorted discharge, supply chain system, development of recycling technology, and securing product markets. TAKEE is a general environmental company which treats not only construction waste but also supply recycled raw materials and products, and new energy by taking advantage of synergy effects of collaboration with affiliated companies. The
Japanese treasure and use all things as long as possible and have prolonged to motivate the development of technology for reuse and recycling. It is expected that the Japanese construction waste processing plants are sure to grow at a steady pace in the coming years. The Eco-first pact in Japan is all set to achieve above 90% waste management by 2021.
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