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Waste

Trends in Amount of Waste Generated and Effective Utilization Ratio

Indicator FY2012 FY2013 FY2014 FY2015 FY2016 FY2017
Amount of waste generated [tons] 28,005 25,085 23,614 22,313 22,432 21,905
Effective utilization ratio [%] 96.4 97.9 98.9 98.9 99.2 99.2

Waste Generated and Effective Utilization Ratio

Breakdown of Waste Generated, Effective Utilization, and Final Disposal

Waste Type FY2017
Waste Generated [tons] Effective Utilization [tons] Final Disposal [tons]
Total 21,905 20,796 1,108
Sludge 4,158 4,007 150
Waste oil 1,121 1,104 18
Waste acid 4,072 4,072 0
Waste alkali 3,803 3,429 401
Waste plastic 3,314 3,267 46
Waste wood 898 894 4
Waste metal 791 791 0
Glass / eramic waste 491 486 5
Other (*1) 3,230 2,746 484

*1 Other:
Other includes general waste, paper waste, septic tank sludge, residue, rubble, textile waste, animal and plant residue, and infectious waste.