Environmental Sustainability|Air Pollution Control
Nuvoton actively reduce the environmental impact of our business operations by investing in innovative technologies and initiating layouts for renewable energy and net-zero emissions. We enhance resource use efficiency and implement waste management to respond to the continuously evolving international environmental regulations, extreme climate events, and other risks. By estimating financial impacts and planning management costs in advance, we formulate environmental strategies and build operational resilience for the company.
15818000
kWh
Cumulative electricity savings from 2010 to 2023
37
%
Scope 1 and 2 greenhouse gas emissions in 2023 decreased compared to 2020
880000
kWh
Infrastructure for annual renewable energy production of
Air Pollutant Emissions
Committed to continuously reducing pollutant emissions, Nuvoton complies with government regulations and refers to international laws for air pollution control and emissions. Nuvoton’s main air pollutants are produced by the production process and include volatile organic compounds (VOCs), nitrogen oxides, sulfur oxides, ammonia, chlorine, hydrochloric acid, nitric acid, and phosphoric acid. The strategy for managing air pollutants involves first conducting source control, optimizing processes to reduce the concentration and volume of exhaust gases, and then treating them according to their characteristics. All air pollutant treatment systems operate 24 hours a day, year-round, with continuous monitoring to ensure normal operation. The following details the treatment methods for different types of exhaust gases in the air pollutant treatment system:
1.For general acidic and alkaline exhaust gases, they are discharged to the central exhaust scrubber for neutralization treatment.
2.Some flammable, toxic, and FCs exhaust gases first undergo high-concentration effective treatment at the process equipment end through local scrubbers using adsorption, combustion, electric heating, or scrubbing facilities to reduce hazards, then are discharged to the central exhaust scrubber for neutralization treatment.
3.Exhaust gases containing volatile organic compounds are first adsorbed by a zeolite rotor and then incinerated in a direct-fired oxidizer; high-boiling-point organic exhaust gases are treated by condensation collection using temperature differences.
NTC 2021-2023 Emissions
NTCJ 2021-2023 Emissions
Air Pollution Prevention Measures
General Exhaust Gases
Cooling exhaust from equipment, some may contain air pollutants
Acidic and Alkaline Exhaust Gases
Treated through scrubber towers with water washing
Organic Exhaust Gases
Adsorbed and concentrated using a zeolite rotor, then desorbed at high temperature and incinerated
High-Boiling-Point Organic Exhaust Gases
Condensed and then adsorbed using activated carbon