In 2014, 437 million tons of waste was produced in Japan, of which 44 million tons, or about 10%, was municipal waste and the remaining 393 million tons was industrial waste. In 2016, the 43 million tons of municipal waste was generated, about 925 grams per day for each person living in Japan. This continued a downward trend in both the total amount of household garbage produced and per-capita production that has been visible following recycling laws passed in the 1990s. Major disposal methods for waste in Japan include incineration, recycling, landfill and backfilling.
Incineration . Incineration is the most widely used waste disposal method in Japan, and is attractive because of its ability to reduce the volume of trash in a country mostly occupied by mountains or people. In 2017, there were about 1,200 incineration facilities in Japan. In 2014, 358 of these plants also generated electricity. Incineration is done at a high temperature, and the exhaust gas is put through many stages of cleaning and monitoring to ensure hazardous materials like
dioxin and
mercury are removed and not released into the air. The
plastic recycling picture is a bit more complicated. The government reports an 84% recycling rate, one of the highest in the world, but this includes thermal recycling, where plastic is burned for energy. Only 27% of collected plastic is reprocessed into usable material. Thermal recycling is criticized as not being true recycling, as it still encourages the use of single-use plastics and produces greenhouse gases. There also exists legislation and systems established for the recycling of many specific types of less common waste, including for construction waste, appliances, vehicles, and electronics.
Landfill In 2018, there were over 1,600 landfills across the country for disposing of nonburnable garbage and ash remaining from the incineration process. In this year, existing landfill space was expected to last another twenty years, though certain regions, unable to find enough space locally, had to ship garbage to other landfills in Japan for disposal. In 2014, 15 million tons of garbage were sent to landfills.
Backfilling Backfilling or
land reclamation is the process of filling in the sea with processed trash to create land that can be developed. In Tokyo, this has taken place since the 1920s and continues today. One contemporary example is the
Central Breakwater, an artificial island in
Tokyo Bay. In 2014, 21 million tons of garbage were put towards this purpose. == Managing unconventional waste ==