Water Resource Management
Setting out from sustainable water use, we plan the four strategic stages: wastewater reduction, wastewater recycling, new water source cultivation, zero wastewater discharge by extending the three water principles: consumption inventory, conservation measures, and recycling. Reduction and recycling begin with domestic water use, process water use, aircon water use, and boiler water use to progressively enhance water efficiency and improve water use strategies. In 2023 we will implement the ISO 46001 water efficiency management systems and pass the certification.
The 2022 total withdrawal reduced by 18.96Ml (4.20%) over 2021 to 432.74 Ml. The 2022 total discharge (wastewater discharge) to the local wastewater treatment plant reduced by 9.40 Ml to 365.42Ml over 2021. The 2022 water consumption was 67.32 Ml, mainly from evaporation by the cooling water tower.
No wastewater was recycled for the following plants: Wuhu Plant (discharged together with domestic water), Suzhou Plant and subsidiaries Cenefom and Genejet Biotech (mainly domestic wastewater). The 2022 discharge rate (discharge/total withdrawal) of each plant in Taiwan was 82.13%. By including the amount of process recycling, scrubber recycling, process water treatment and recycling, ROR circulation and recycling, wastewater treatment recycling and aircon water recycling, the recycling rate was 84.16%. By further including the water recycled water from the cooling water, the recycling rate could be up to 97.36%.
Annual water resource utilization intensity
Unit: million cubic meters per hundred million dollars
Annual water resource utilization overview
Unit: hundred cubic meters
- Note：Subsidiaries Cenefom and Genejet Biotech were added to the water use disclosures in 2022.
