In accordance to “Waste Disposal Act Enforcement Rules”, all of the waste generated from our plants are processed and categorized on-site first. Then the waste management company would transport the waste and submit the related information to Solid Waste Export Report System accordingly. From time to time, we would trail the waste management truck to ensure proper disposal.
In 2020, wastewater processing generated 43.19 tons of sludge, reclaimed 321.36 tons as useful resources, and 190.14 tons of non-reusable waste and of which were disposed by the waste management company.
To ensure the product quality, chemistry experiments were carried out. During the process, some hazardous chemical substances were used and mainly were potassium chromate, sodium cyanide, potassium cyanide, acetonitrile, and boron trifluoride, total of 5 items. At the end of 2020, there were 0.382kg of potassium chromate, 0.244kg of sodium cyanide, 0.481 kg of potassium cyanide, 12.2kg of acetonitrile and 0.174kg of boron trifluoride at our plant.
The hazardous substances generated from the chemistry experiments were transported by the certified hazardous substance waste company, Shalu plant disposed 0.025kg of potassium chromate and 0.065kg of sodium cyanide, to National Cheng Kung University Environment Research Management Recycle Center in June 2020.