Corporate Social Responsibility

Water Resources Management Policies

Facing challenges associated with water resources, Innolux has analyzed the impact of water resource risks and makes its business plans with a focus on water savings and recycling , The integrated facility management (IFM) system has been introduced to improve water resource management efficiency, help cope with water shortages, and strengthen the Company’s water supply system management.
 

 

Management of Water Resources at Innolux
 
Oversight and Management of Daily Water Consumption
1. Reviewing and tracking anomalies in daily water recycling
2. Placing daily water consumption under the oversight and management of the energy management system
 
Efficiency Review and Improvements
1. Establishing annual water use targets and reviewing whether they are achieved on a monthly basis
2. Defining water recycling equipment maintenance cycles to improve efficiency
 
Development of New Techniques and Promotion of these Techniques at every Plant
1. Exhibiting outstanding water-savings
2. Introducing new techniques to improve current conditions and applying such techniques at other plants to extend the effects
 
Improvements in Water-savings across Production Processes
1. Improving water consumption in production processes and reducing waste
2. Improving benefits of the recycling and reuse of water and reducing water consumption
Review of Water Use Efficiency
In 2018, Innolux consumed a total of 23.73 million tons of water, including 21.83 million tons, or 92%, at the Taiwan sites, mostly used during the manufacturing process of arrays and color filters, with 1.90 million tons, or 8%, consumed at mainland China sites.

 


The water consumption per unit output area at TFT-LCD plants at Taiwan sites was 0.277 m3/m2 in 2018, a decrease of 15.9% compared to 2017 (0.329 m3/m2 ) which also achieved the established annual 5% target. In the meantime, the effort invested in achieving the challenging mid-term target of reducing water consumption per unit area by 20% in 2020

 

The annual water consumption reduction targets per unit output quantity (vs. 2017) were: Ningbo, 5%, Foshan, 5%, Nanjing, 3%, and Shanghai, 1.5%. The water consumption per output quantity of 0.00468 m3/pc at the Ningbo Site, 0.0151 m3/pc at the Foshan Site, and 0.0169 m3/pc at the Shanghai Site all reached their targets.
 
The Company will continue to invest in water-saving projects. It has been decided that water consumption per unit output area will be reduced by another 6.5%, compared to 2018, at Taiwan sites. Reductions in water consumption per unit output quantity at mainland China sites are set at: Ningbo site, 3%, Foshan site, 3%, Nanjing site 8%, and Shanghai Site 2% (compared to 2018).

Wastewater Control Improvement Projects in 2018
 
Site Plant Project Results
Tainan FAB 1 Collection and treatment of waste solutions from copper etching Hydrogen peroxide was removed from high-concentration waste solution to improve effluent quality prior to disposal.
Tainan FAB 6 MBR Installation in the effluent discharge system After improvement, COD went down 20%, suspended solids being non-detectable and polymer reduction achieving 52m3/month.
Tainan FAB 8 Treatment of high-concentration copper solutions: the evaporation method High-concentration waste copper solutions were evaporated and usable water was recycled to reduce waste volume.
 Ningbo D
Building
Installation of wastewater treatment facilities: MBR+RO+resin towers installed
After the facilities were installed, there was no effluent discharge.
Foshan HA Recycling of water used in baked finish facilities: introduction of integrated MBR equipment, multi-interface filters, and ultrafiltration and high-pressure RO equipment Discharge of wastewater from baked finish facilities was reduced by 50 CMD, and wastewater recycling rates at baked finish facilities achieved 80%.
Nanjing LMC1/
LCM2
 
Separation of rainwater and sewage pipelines Sewage was no longer discharged into in the city pipeline system.

Further Improvements to Rates of Water Recycling from Production Processes
The water saved throughout production processes at the Taiwan sites in 2018 reached 271,591,031 tons, about the equivalent of the water in 108,636 standard swimming pools. The average rate* of water recycling from production processes reached 96.2%, far better than the 85% standard set by science park administrations.
*Rate of water recycled from production processes = (amount of water recycled from production processes + amount of water from production processes reused) ÷ (amount of water used in production processes + amount of water recycled from production processes and reused)
 

 

Wastewater Treatment
The wastewater generated from production processes at Innolux can be divided into washing wastewater, dye wastewater, etching wastewater, developer wastewater, chromate wastewater, and wastewater containing fluoride. The different types of wastewater may contain organic substances, acids, alkalines, or heavy metals. In order to upgrade the efficiency and reliability of treatment equipment, different types of wastewater are collected separately. Then, depending on the characteristics of the wastewater, a combination of biological treatment, fluidized bed crystallization, and coagulation sedimentation is applied to ensure that the effluent can meet the control standards of the science park.
 
In 2018, Innolux generated a total of 16.02 million tons of wastewater, including 15.05 million tons, or 93.9%, at its Taiwan sites and 0.97 million tons, or 6.1%, at mainland China sites.