To improve the efficiency of water usage, TSMC categorizes process wastewater according to the cleanliness of discharge. By means of the design of classified process water drains and the establishment of various water recycling systems, TSMC continues to strive for effective usage of each water drop to 3.5 times, which is 350% of usage rate...
TSMC introduced the first resource reclamation system for ammonia nitrogen wastewater in Taiwan. In 2016, this technique helped TSMC save 46,889 metric tons in sulfuric acid purchases while also reducing ammonia concentration in wastewater. This ammonia wastewater reclamation technique can not only reduce sulfuric acid purchase but also reduce ammonia in wastewater and produce valuable products...
Continue water conservation measures, track water supply status and prepare for droughts and related actions, lay the foundation for water conservation and process water recycling through enhancement of the wastewater classification system.
Raise the recycling rate and reduce environmental impact through advanced wastewater treatment techniques.
Convert materials in wastewater into reusable resources, optimizing resource utilization.
Recycle wastewater effluent and cooperate with the government to execute reclaimed water project.
Communicate and cooperate with industry, government, and academia and share water resource management experience to deal with the challenges of water shortages.
|Average Process Water Recycling (%) (Note 1)||86.5||86.9||87.6||87.3||87.4|
|Total Water Saved (million M3)||53.4||66.9||81.0||85.6||94.3 (Note 4)|
|Water Saved, Measured by the Full Capacity of Boshan Reservoir II (Note 2)||1.7||2.1||2.6||2.7||3.0|
|Water Saved, Measured by Standard Swimming Pools (Note 3)||21,348||26,744||32,396||34,252||37,732|
|Number of Times of Each Drop Water Usage||3.1||3.2||3.3||3.5||3.5|