水務署2020/21年年報 WSD Annual Report 2020/21

我們一直致力透過節約能源、發展可 再生能源及減低環境影響等多項環保 措施，在運作中實踐保護環境及減緩 氣候變化的理念。 節約能源與發展可再生能源 能源管理系統 我們致力在水務設施的管理和運作當中， 實施一系列的節能措施，使水務設施的 效能得以持續提升。 為展現我們實施有效能源管理的承擔， 我 們已於二零二零年十月，成功提升 我們的能源管理系統認證至 ISO 50001 的 最新版本。該認證覆蓋整個供水鏈，包括 收集、貯存、輸送及原水處理、以及食水 與海水的供應及分配。 次氯酸鈉液體投放系統 目前，我們營運 22 個海傍海水抽水站， 為香港近 85% 的人口平均每日供應 76 萬 立方米的沖廁用海水。我們一般使用 電解氯化設備將海水電解以製造次氯酸鈉 溶液，為海水進行消毒。為了節省更多 能源，我們計劃在海傍海水抽水站安裝 更節能的次氯酸鈉液體投放系統。 We are dedicated to protecting our environment as well as mitigating climate change in our operations through an arrayof green initiatives onenergy conservation, renewable energy development and environmental mitigation. ENERGY CONSERVATION AND RENEWABLE ENERGY DEVELOPMENT Energy Management System We strive for continuous improvement in our plant performance by implementing a series of energy conservation measures over a broad spectrum of water utility management and operations. To demonstrate our commitment to effective energy management, we have successfully upgraded our ISO 50001 certification to the latest version in October 2020. This certification covers the entire water supply chain, from collection, storage, transfer and treatment of raw water to the supply and distribution of fresh water and salt water. Sodium Hypochlorite Dosing Systems Currently, we operate 22 seafront salt water pumping stations, which supply an average of 760 000 m 3 of salt water per day for toilet flushing to nearly 85% of Hong Kong's population. Electrochlorination plants have conventionally been used to produce sodium hypochlorite solution through the electrolysis of salt water to disinfect salt water. In order to achieve saving in energy, we have planned to install more energy-efficient sodium hypochlorite dosing systems (SHDS) in the seafront salt water pumping stations. 54 水務署 二零二零至二一年年報 可持續運作 Operational Sustainability