Pollution Control and Reduction of Environmental Impacts

Innolux's TFT-LCD production process uses more than dozens of raw materials. To ensure the effective control of environmental impacts from waste gases, wastewater, hazardous substances, and noise generated in the production processes, we have established respective pollution control facilities and monitoring mechanisms. Apart from making improvements through collaboration by environmental protection, plant operations, and production units, we engage in industry-academia collaboration to enhance processing capacity under the purview of the Plant Operations Committee. Besides legal compliance, we aim to achieve economic benefits and environmental protection performance.
2019 Industry-Academia Collaboration Projects
Project Name Project Content Estimated Outcomes Project Period
Rotating Equipment Modular Diagnostics Platform
Partner: National Taiwan University of Science and Technology
1. Establishment and analysis of the mathematical model for voltage and current of AC induction motor and its rotation mechanical system.
2. Comparison and analysis of equipment status detection and judgement data.
Completion of the intelligent status diagnostics of induction motor rotation equipment 2019/10
~
2020/09
Cause Investigation and Improvement of White Smoke form AMS/CVD Exhaust
Partner: National Sun Yat-Sen University
Cause Investigation and countermeasures of white smoke
to enhance eco-friendliness.
1. Identify the composition, particle size, and factors affecting intensity change of white smoke.
2. Adjust operating parameters and equipment specifications to reduce the opacity and occurrence rate of white smoke.
3. Enhance scrubber efficiency (dilute emission intensity).
2019/06
~
2020/08
Feasibility Analysis of the Maximization of Carbon Source Use in Biological Treatment
Partner: National Cheng Kung University
The treatment of high-concentration organic waste solutions will be foundation for assessing the treatment of high-nitrogen low-carbon wastewater and high-concentration organic waste solutions in the future. This project aims to establish a complete wastewater treatment process for the optoelectronic industry to enhance water recycling rate and reduce pollutant discharge. Assess the feasibility/inhibitability of wastewater biological treatment for high-concentration organic wastewater produced from the plants, including anaerobic/hypoxic/aerobic treatment processes; and implement plant facility system test and improvement. 2019/04
~
2020/04
Microalgal CO2 Fixation and Nitrogen Reduction TDP
Partner: National Cheng Kung University
Development of high-efficiency microalgae-based biological process for nitrogen removal with microalgal CO2 fixation and nitrogen reduction technology to resolve high-nitrogen low-carbon wastewater. Develop high-efficiency microalgae-based biological process for nitrogen removal with microalgal CO2 fixation and nitrogen reduction technology to resolve high-nitrogen low-carbon wastewater rejected from MBR RRP. 2019/04
~
2020/04
Review of air pollution control
2019 Major Air Pollution Control Projects
● Improvement of white smoke and odor in stripper exhaust, and addition of new stripper exhaust recovery and treatment unit. After adding the defroster to the stripper, white smoke and odor have disappeared, with extra benefits of about NT$20 million/year.
● Addition of the fourth RTO-VOC system. RTO (04) and zeolite rotor (G, H). Increased treatment air flow to 240,000 NCMH with a removal rate of 95%, superior to the regulatory VOC removal rate at 85%.
● Zeolite rotor replacement, VOC-A rotor renewal. Superior to the regulatory VOC removal rate at 85%.
● Implementation of the wet scrubber and active carbon tower. The VOC removal rate of the previous active carbon filtering system was 30-60%. After the improvement, the removal rate has been raised to 90%, superior to the regulatory VOC removal rate at 75%.
Air pollution emissions
Item
(Unit: ton)
Y2016 Y2017 Y2018 Y2019
VOCs Taiwan 158.24 153.18 131.17 114.96
China 5.73 4.64 4.92 7.76
Total 163.90 157.82 136.09 122.72
SOx Taiwan 46.24 38.27 44.91 26.50
NOx Taiwan 15.34 20.19 26.32 30.79
Waste Liquid Crystal recycling
Innolux cooperated with ITRI (Industrial Technology Research Institute) to introduce the world's first waste liquid crystal recycling technology. In 2019, the project achieved a milestone and started implementation. A liquid crystal separation center at Innolux facility started recycling liquid crystal from LCD panels and reused it after treatment. Such circular process could not only reduce operation cost and waste, but also achieve a financial benefit of saving hundreds of millions of NT dollars each year, of which 150 million dollars for liquid crystal procurement was saved. The treatment center could process 3 tons of waste LCD panel a day and set a role model of circular economy among technology industry.
Waste treatment analysis
Proportion of recycling
Item Y2016 Y2017 Y2018 Y2019
Recycling ratio 82.2% 79.4% 84.9% 89.9%
Chemical waste liquid recovery and reuse rate
Item Y2016 Y2017 Y2018 Y2019
Stripper 76.8% 77.1% 77.8% 78.4%
NMP 83.1% 80.1% 83.2% 73.1%
PGMEA 69.1% 73.0% 73.9% 67.4%
TMAH 38.4% 29.0% 29.5% 24.0%
Package material recycling reduction ratio
Item Y2016 Y2017 Y2018 Y2019
DSPK Box 81.3% 76.9% 75.9% 79.2%
Hard Box 31.3% 57.3% 54.8% 35.1%
PP Box 12.8% 26.8% 57.6% 2.4%
Waste Output
2019Amount of waste (ton) Taiwan China Corp.
Volume of
Hazardous
Industrial
Waste
Incineration Incineration 1,226.0 276.7 1,502.7
Landfill Landfill 0 46.9 46.9
Recovery Recycling and reuse
(offsite)
15,390.8 41.5 15,432.3
Physical treatment 4,462.3 0 44,62.3
Stabilization 40.6 0 40.6
Chemical treatment 3,046.8 0 3,046.8
Offshore treatment 13.3 0 13.3
Thermal treatment 58.1 0 58.1
Washing 805.1 0 805.1
Others Solidification 392.5 0 392.5
Chemical treatment 181.6 0 181.6
Total 25,617.2 365.1 25,982.3
Volume of
General
Industrial
Waste
Incineration Incineration 7,102.1 0 7,102.1
Landfill Landfill 794.6 709.0 1,503.6
Recovery Recycling and reuse
(offsite)
19,762.4 30,953.5 50,715.8
Solidification 1,467.8 0 1,467.8
Chemical treatment 20.2 0 20.2
Washing 20.4 0 20.4
Thermal treatment 15,795.8 0 15,795.8
Stabilization 9.8 0 9.8
Physical treatment 9,940.0 0 9,940.0
Others Physical treatment 682.8 0 682.8
Solidification 60.2 0 60.2
Total 55,656.1 31,662.5 87,318.5