Annual Report 2020

ANNUAL REPORT 2020 年度報告 33 ENVIRONMENTAL, SOCIAL AND GOVERNANCE REPORT 環境、社會及管治報告 3. 環境、社會及管治表現 （續） 3.1 環境 （續） 3.1.1 排放物 （續） 透過實施上述減少廢棄物的政策及措 施，集團展示報告期間的下列結果： 圖一 3. ENVIRONMENTAL, SOCIAL AND GOVERNANCE PERFORMANCE (Continued) 3.1 Environment (Continued) 3.1.1 Emissions (Continued) The Group has demonstrated the following results in the reporting period through the implementation of the aforementioned policies and measures for waste reduction: Figure I Total Annual Emissions (tonnes) 年度總排放量（噸） 2020 2019 Types of Wastes 廢棄物種類 二零二零年 二零一九年 Hazardous Waste 有害廢棄物 3 3 Non-hazardous Waste 無害廢棄物 242 367 Waste Intensity per Employee (tonnes/person) 平均每位僱員所產生 廢棄物密度（噸╱人） 2020 2019 Type of Wastes 廢棄物種類 二零二零年 二零一九年 Hazardous Waste 有害廢棄物 0.01 0.01 Non-hazardous Waste 無害廢棄物 0.43 0.63 Reduction in Atmospheric Emissions The main source of gas emissions for the Group comes from the boilers which mainly consist of soot, sulfur dioxide and nitrogen oxide. In the meantime, the Group utilized a variety of technologies to control the gas emissions: exhaust gas from boiler combustion is passed to the Wet Flue Gas Spray Tower for magnesium desulfurization to minimize the sulfur dioxide in the flue gas; SNCR denitrification technology is adopted to minimize nitrogen oxide; and the soot from flue gas is minimized through bag filters. 減少大氣排放物 集團主要的氣體排放物源頭為鍋爐釋出 的廢氣，主要包含煙塵、二氧化硫和氮 氧化物。同時，集團採用了不同技術去 控制氣體排放物：於鍋爐排放的廢氣 經煙氣濕法空心噴淋塔，以鎂法脫硫 技術，減少煙氣中的二氧化硫；採用 SNCR 脫硝技術降低氮氧化物；以布袋 除塵器減低煙氣中的煙塵。