Water resource management

Water
Management

Continuous monitoring and compilation of daily, monthly and annual water consumption records. In terms of management, we will continue to study feasible solutions and use manufacturing processes to improve water conservation and enhance water recycling and reuse rates. Improve pipelines, conduct regular leak-prevention inspections, follow up and review the progress, and propose improvement plans. The scope of 2023 inventory includes CGPC (Toufen Main Plant), and TVCM and CGPCP (Linyuan Plant), with a coverage rate of 100%.

Water management

In response to the potentially risk of water shortage caused by climate change, the water source used by CGPC (Toufen Main Plant) is supplied by Yongheshan Reservoir and the water used by TVCM and CGPCP (Linyuan Plant) is supplied by the Fengshan Reservoir, which is used into the manufacture process. To save water, the three plants have added processed water recycling systems and various water-conserving devices, promoted other related measures and continued to pay attention to the internal and external water supply and demand status and reinforce the implementation of water risk management.

In 2023, CGPC (Toufen Main Plant) implemented the ISO 46001:2019 water resources management system and the ISO 14046:2014 carbon footprint standard. This initiative led to reduced water waste, improved and replaced high-consumption equipment, and increased the water recycling and reuse rate.

ISO 46001 ISO 14046

CGPCP certificated the excellent award of Implement water-saving guidance and improvement from Water Resources Agency, MOEA.

CGPCP was invited from Water Resources Agency, MOEA to attend “Award ceremony of water-saving 2022” and certificated the excellent award of Implement water-saving guidance and improvement.

The Water Resources Agency, MOEA encourages all citizens to conserve water and cherish water resources. To turn this goal into concrete action, the WRA held the 2021 "Water Conservation Guidance and Improvement Award", "Outstanding Water Conservation Unit" and "Water Conservation Expert" selection activities. These activities aim to contribute to the sustainable development of the environment. The WRA hopes to commend the water conservation efforts of outstanding units through the award ceremony. The award ceremony was held on March 22, World Water Day, at the International Conference Center of National Taiwan University. Mr. Lin, General Manager of CGPCP, represented the company to receive the award. The holding of the award ceremony is of great significance and further demonstrates our value of water resources.

The descriptions of the respond strategies and implementation status are shown below:

Impact Risk

Water shortages caused by climate changes

Corresponding Action

A Conservation of processed water

➀ Start water conservation measures to increase the conductivity of the water replenished to the cooling water tower.
➁ Increase the concentration ratio of the cooling water tower and reduce the frequency of water replacement in the scrubber tower.
➂ Discharge the cooling water and recycle it as the water used in the scrubber tower.
B Conservation of water used in daily life

➀ Decompressed water supply
➁ Place water bottles and install water savers to squat toilets to achieve water conservation.
➂ Continue to advocate water conservation to employees.
➃ Improve on-site patrol inspections and send personnel to handle any water leaks immediately.
C Improve the recycling water treatment operation and the recycling rate and actively plan rainwater recycling.
D Purchased water and active the use of underground in the Toufen Main Plant.
E Continue to maintain contact with government agencies to obtain water information. 。
F CGPC Main plant introduce ISO 46001 and ISO 14046 in 2022.
G Conduct monthly factory review meetings, exchange opinions with other factories from time to time, and keep
track of climate and reservoir information.
H One new 500-ton PE storage tank (20 pieces) and 1,500-ton tap water storage tank.

Improvement effect

(1) Install centrifuge dryer wastewater recovery systems (HBF) for CGPC (Toufen Main Plant) and CGPCP (Linyuan Plant).
(2) In 2023, the second phase of the HBF project was launched, and the daily recycling consumption is expected to increase by another 100 tonnes. The water saving in 2023 was as follows:

．

Water Reclaimed Volume of CGPC: 139.5 million liters/year

．

Water Recycled Volume of CGPCP: 457.9 million liters/year

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Total: 597.4 million liters/year

We are actively coordinating internally and externally, communicating with government agencies to implement various water conservation measures. These measures include using HBF recycled water, increasing the concentration ratio of the cooling water tower, and reducing water replenishment. However, due to inconsistencies between the water data and the actual water volume we receive, significant operational challenges exist. We will continue to monitor the situation and take appropriate action as needed.

Centrifugal Drying High performance Bio-treatment and Filtration system (HBF)

Climate change poses a global threat of water scarcity, and Taiwan ranks 20th among the countries most at risk. To address this challenge, CGPC (Toufen Main Plant) and CGPCP (Linyuan Plant) have implemented a recycled water recovery and reuse system. This system utilizes a biological treatment system and a COD adsorption system to treat process wastewater. The treated water then goes through a newly installed centrifuge recycling system to further reduce its chemical oxygen demand (COD) and suspended solids (SS) content. The final, purified water is then reused in the cooling water tower, minimizing both tap water usage and wastewater discharge. This initiative significantly contributes to CGPC's environmental protection efforts.

In 2023, a filter tank and a pre-treatment device were added to the HBF system, which is expected to increase the reused water consumption by 35 million liters.

Prompt project : Starting from 2023, the annual water reuse ratio R2 will be increased by 1% (total of the three plants).
2023 Goal : 71.0 %。
2023 Result：71.9 % 。

Note:

Starting in 2023, statistics are calculated based on the water reuse rate R2 of water consumption fees.

2023 amount of water conserved:

CGPC's Volume of water reused : 467.1 million cubic meters/year
TVCM's Volume of water reused : 216.5 million cubic meters/year
CGPCP's Volume of water reused : 630.5 million cubic meters/year Three plants in total: 1,314.1 million liters/year

Note: Save about 526 Olympic-standard swimming pools of water.

Vinyl Chain Water resources statistics

Total R2 recycled rate of the three plants

2021

70.7%
2022

70.7%
2023

71.9%

Three plants in total

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◼︎ Total water intake of the three plants

◼︎ Total circulation volume of the three plants

◼︎ Total R2 recycled rate of the three plants

Total water intake, recycled and reused water of each plant in the past three years (Unit: million liters)

CGPC

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◼︎ Total water intake

◼︎ Total circulating water volume

◼︎ Total recycled water consumption

TVCM

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◼︎ Total water intake

◼︎ Total circulating water volume

◼︎ Total recycled water consumption

CGPCP

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◼︎ Total water intake

◼︎ Total circulating water volume

◼︎ Total recycled water consumption

Note：

➀

CGPC completed the HBF (process recycling water system) in July 2018, which puts the qualified treated and recycled water into the cooling water tower, reducing the consumption of tap water；In 2023, the second phase of the HBF project was launched, and the daily recycling consumption is expected to increase by another 100 tonnes.

➁

CGPCP completed the HBF (process recycling water system) in 2018, the average monthly water intake in 2022 for CGPCP (Linyuan plan) was 54,116 tons. However, there was a 13.3% increase in water intake in 2021 due to maintenance work on the HBF system that took place in July and August.

③

Save about 526 Olympic-standard swimming pools of water.

Wastewater discharge

CGPC and subsidiaries adopt standards stricter than regulatory requirements for their treatment and discharge of wastewater. The destinations of each plant’s effluent are as follows:

CGPC
(Main Plant)

Jhonggang River

TVCM
(Linyuan Plant)

CGPCP
(Linyuan Plant)

Ocean discharge in Dalinpu (Note)

Note: The wastewater of each factory in Linyuan Industrial Park is treated and then discharged to the sewage treatment plant in Linyuan and then transported to the Kaohsiung Linhai Linyuan and Dafa Industrial Parks Combined Wastewater Treatment Plant of the Industrial Development Bureau, Ministry of Economic Affairs, before being discharged to the open sea of the industrial park and the water quality has to meet the discharge standards.

Wastewater discharged in the past 3 years (Unit: million liter)

2021
2022
2023

CGPC

TVCM

CGPCP

Water Sharing

The firewater connection of TVCM Linyuan Plant and nearby APC are connected, as well as TTC、TSMC and Nantex can all support each other and share firewater resources. Besides dispatching water to support firefighting through water as a shared resource, this also strengthened the emergency response capability. Currently, the firewater of these five companies are connected in a firewater tank storage of about 10,900m³, the effective capacity of firewater storage tank at TVCM Linyuan Plant is 3,500m³.

Water Resource Statistics (Balance chart)

2023 Water Balance Chart (Unit: million liters)