Internal Water Management
GC optimizes water consumption for the highest efficiency in the production process, utilizing renewable water, building cooperation across the supply chain, by focusing on water saving, applying innovation to water management, and responsible water consumption throughout the value chain. For example, recycling of effluent from wastewater treatment system, and increasing numbers of water reused in cooling system, etc. GC also has assessed direct and indirect water consumption throughout the product life cycle by implementing the Product Water Footprint (PWF) to analyze hotspots and define approaches to reduce water use in the production process, reduce freshwater withdrawal from natural sources. These will contribute to alleviating impact from water consumption by GC’s business operations.
Additionally, GC has regularly assessed water management risks both quantitatively and qualitatively in Map Ta Phut area by using the Water Risk Map, which is developed by the AQUEDUCT Water Risk Atlas and WBCSD Global Water Tool, as a Tool for risk assessment and analysis. As a result, GC has no operating sites in the area with water stress.
Moreover, GC must define proactive measures, drive sustainable water management through applying high technology to support acquisition of additional water supply to ensure adequate water supply for our existing productions as well as to effectively accommodate future projects at reasonable costs.
GC has enhanced water efficiency in the production process, utilized renewable water, supported investment in water related technology, streamline production process, and seek alternative water supply, such as Sea Water Reverse Osmosis (SWRO) and Wastewater Reverse Osmosis (WWRO), etc.
Wastewater Reverse Omission (WWRO)
GC enhances the quality of reclaimed water using the Wastewater Reverse Osmosis (WWRO) system so that it can be reintroduced into the production processes. The project resulted in reduced water consumption by 2.69 million m3 per day from this project.
Sea Water Reverse Osmosis: SWRO
GC has increased the efficiency of the Seawater Reverse Osmosis (SWRO) system by increasing in water circulation in the cooling system and preparing the readiness of drought, as a result of climate change. Moreover, GC has hastened and supported water management in the Eastern Economic Corridor (EEC), according to established plan between 2017 – 2037. The project has contributed to reduce water consumption for 2.97 million m3 per year.
Effluent Management
GC is strictly obliged to monitor its liquid discharges to maintain water quality at all production processes though the establishment and application of environmental policies and plans, namely QSHEB policy throughout the company to drive the environmental performance. We measure our quality of water discharges by complying with governmental environmental agencies and other international standards and obligations, such as Enhancement and Conservation of National Environmental Quality Act B.E. 2535. The Wastewater Discharge Requirements into the Central Wastewater Treatment System in Industrial Estates of Industrial Estate Authority of Thailand (IEAT) are also solely incorporated in the identification and measurement of pollutants. GC is aware of the impact of water discharges to the environment, so currently, the contaminated water was treated in the wastewater treatment to ensure the quality is always within effluent standard, the general effluent monitoring parameters are pH, temperature, COD, BOD, Total suspended solids (TSS), Oil and grease. In 2021, there was no such cases of water effluent that is below standard requirements reported.