ESG Report 2022

For the exhaust gas with peculiar smell generated in the sewage treatment process, the factories adopt a measure to collect the odour source in a sealed way. The collected exhaust gas is deodorised through the process of “multi-level alkali spraying+ozonation” to reduce the impacts on the surrounding environment. In regard to the technical processes of different factories and the exhaust gas released, Inner Mongolia Company handle them by adopting treatment measures such as active carbon regeneration adsorbing, active carbon fibre absorbing, low-temperature plasma, alkali spraying and catalytic oxidation, so as to greatly reduce the emission of pollutants. In order to control the phenylacetic acid generated from fermentation plants and the peculiar odour emitted from the recycling process, Inner Mongolia Company adopts treatment processes such as the “cooling + alkali spraying + carbon fibre absorbing” to effectively prevent peculiar odour from spreading. Removal of odours from sewage treatment processes Treatment of exhaust gases from different workshop processes Control of odours from fermentation plants The company has newly built an Activated 2022, adopting the treatment process of Carbon Adsorption and Regeneration Waste "condensation recovery + water spraying + Gas Treatment System on the second floor of activated carbon adsorption and regeneration." the recycling section in Workshop 202, with a The upgraded treatment facilities not only 3 ensure stable and compliant emissions of waste processing capacity of 5,000m /h. The system gas, it can also recover some organic solvents, includes three new activated carbon adsorption 3 reduce the consumption of activated carbon, and regeneration beds, a 5,000m /h induced 3 2 and decrease the amount of waste activated draft fan, a 5,000m /h drying fan, two 50m c a r b o n g e n e r a t e d , a c h i e v i n g e n e r g y condensers, and other main equipment. conservation and efficiency improvement. The system has been in operation since April Technical Renovation Project for Organic Waste Gas Treatment Environmental, Social and Governance Report 2022 The United Laboratories International Holdings Limited 75 In order to achieve the environmental targets, the ensure the waste gas emissions meet the Group has also invested in the renovation of the standards but cannot regenerate and reuse the existing waste gas facilities in this fiscal year. activated carbon. In addition, it requires frequent The current organic waste gas treatment process replacement of carbon. Hence, the Inner in Workshop 202, which is "condensation Mongolia Company has invested RMB2 million to recovery + activated carbon adsorption," can only upgrade and replace the system.