Water Resources Management

The circular economy is an industrial system designed for recovery and regeneration to replace “end of life” with “recovery," in order to turn waste into resources and thereby achieve waste reduction. By constantly implementing the circular economy, we implement water conservation and drainage reduction through improvement programs to reclaim and recycle valuable water resources for reuse and set the annual water conservation target at “1%." The actual conservation is 3.62% in 2020. The boundary of water resources and effluent management is the Kaohsiung Plant, with data coverage of 100%.

Based on the data of the Southern Region Water Resources Office, WRA, MOEA, the daily industrial water demand in Kaohsiung area is about 300 Ml, daily domestic water demand is about 1,250 Ml, the daily average and annual average water withdrawal of the Gaoping River Dike is about 1,000-1,100 Ml and over 300,000 Ml. The Pingding Water Treatment Plant and Chengcing Lake Water Treatment Plant are the two main water sources of Kaohsiung Plant, and none of them are located in the “high” or “extremely high” areas with baseline water stress. The 2020 total water withdrawal was 1,029.036 Ml, accounting for 0.9% of the local industrial water supply, with a reduction of about 5.18 Ml over 2019.

USI-CSR-Resources Management

Water Reclamation

We keep track of future water shortages and endeavor to reduce water consumption or enhance water reclamation efficiency in response. In 2019, we reviewed the water consumption of each water-using unit and investigated the water consumption balance across the plant. Based on the water consumption proposed by each unit, we improved and recovered steam condensate in the EVA process in 2020 up to 17,500MT/year to achieve and surpass the 2021 target of effluent discharge reduction at 100MT/year in advanced. In the future, we will continue to optimize and assess more effective water conservation programs and measures to achieve water recycling.

USI-CSR-Resources Management

Raw material management

Our main products are: LDPE, EVA, HDPE, and LLDPE. Major raw materials include ethylene, VAM, and butene. Major secondary materials include Iso-Paraffin Solvent, propylene, n-Hexane, and isopentane. Raw materials are only used by Kaohsiung Plant, with a coverage rate of 100%.

USI-CSR-Resources Management

Prevention and Management of Plastic Resin Pellet Leakage

The US Plastics Industry Association and American Chemistry Council co-promote the Operation Clean Sweep (OCS) campaign dedicated to preventing plastic resin pellets, flakes, and power loss from entering the ocean to cause environmental pollution. In 2020, we participated in the “Self-Management of Water Body Pollution by Negligence or Leakage of Plastic Resin Pellets cum Water Pollution Control Technology Training” organized by the EPA. The seminar provided international practical methods to prevent leakage from the collection, handling, and transportation of plastic materials.

In 2020, we implemented the plastic resin pellet leakage prevention and management through in-house inspection and inventory of plastic resin pellet leakage management. We also arranged education/training for contractors. In 2021, we plan to implement on-site inspection to understand the methods that contractors and employees adopt to clean up and prevent the leakage of plastic resin pellets. We will also establish or revise related control documents to ensure the collection of plastic resin pellets, flakes, and powder to prevent them from polluting the environment by rainfall or sewage.

USI-CSR-Resources Management