ESG Report 2024

93 While making good use of resources, Inner Mongolia Company also pays attention to emission reduction and proper handling of emissions generated in production and daily operations. The Group strictly abides by the relevant laws and regulations on air pollution, water pollution and solid waste, and has established an internal emission management system to systematically manage and reduce emissions to reduce the impacts on the environment. 10.5 Pollution Control and Treatment Relevant Laws, Regulations, Guidelines and Technical Specifications Category Internal Policies 10.5.1 Wastewater Treatment The complicated production process of pharmaceutical intermediates and active pharmaceutical ingredients involves different kinds of emissions. As such, Inner Mongolia Company has implemented sewage treatment system that integrates biochemical, physicochemical, aerobic, and anaerobic feature to handle different wastewater produced such as wastewater from production process, circulating cooling water, and equipment cleaning water. Since 2007, Inner Mongolia Company has built a sewage treatment station, and has been expanding and renovating it according to the demand during operation, covering a total area of 500 acres. Through the treatment process of pretreatment + hydrolytic acidification + Upflow Anaeroic Sludge Blanket (UASB) + Cyclic Activated Sludge System (CASS) + catalytic oxidation + secondary sedimentation tank , the sewage treatment station can effectively treat various water pollutants generated during the production processes in Inner Mongolia Company. The sewage treatment station is operated by professional technicians, and the system is designed with a processing capacity of nearly 50,000 cubic meters per day. The treated wastewater is then discharged to the reclaimed water reuse system for treatment, and the wastewater is fully reused to achieve zero wastewater discharge and completely avoid the risk of environmental pollution caused by wastewater discharge. Besides, Inner Mongolia Company also has an online monitoring system for water pollutants, which closely monitors the concentrations of chemical oxygen demand (COD) and ammonia nitrogen (NH3-N) in the waste water treatment system. This system prevents underground water pollution triggered by the running, emitting, dropping and leakage of wastewater during the wastewater treatment process. Furthermore, Inner Mongolia Company continues to advance wastewater pollutant reduction projects to reduce the pressure on sewage treatment facilities. To enhance the wastewater treatment goals, the Group has built a three-effect evaporation system and a multi-functional high-efficient waste mineral oil and mechanical vapour recompression (MVR) system as a backup facility to complement the existing MVR evaporation system in 2022. This ensures the stable operation of the company's sewage treatment system, reclaimed water recycling system, and the production system. " " " " Wastewater Treatment Sewage Treatment Management Program Law of the People's Republic of China on the Prevention and Control of Water Pollution Integrated Wastewater Discharge Standard Technical Guidelines for Environmental Impact Assessment - Groundwater Environment Waste Disposal Solid Waste Management Procedure Responsibility System for Environmental Prevention and Control of Hazardous Waste Pollution Management Rules for Hazardous Waste in the Workshop Environmental, Social and Governance Report 2024 The United Laboratories International Holdings Limited Law of the People's Republic of China on the Prevention and Control of Environmental Pollution by Solid Waste Technical Code for Seepage Prevention in Petrochemical Engineering Technical Guidelines for Solid Waste Treatment and Disposition Engineering Standard for Pollution on the Storage and Disposal Site for General Industrial Solid Wastes Triple-Effect Evaporation System Project Exhaust Gas Treatment Atmospheric Pollution Management Policy Law of the People's Republic of China on the Prevention and Control of Atmospheric Pollution Emission Standard of Air Pollutants for Thermal Power Plants Emission Standard of Air Pollutants for Pharmaceutical Industry Standard for Fugitive Emission of Volatile Organic Compounds Technical Guidelines for Environmental Impact Assessment Atmospheric Environment Inner Mongolia Company has invested RMB12 million to build a new set of Triple-effect Evaporation System, with a designed processing capacity of 300 tonnes per day. This system is designed to treat concentrated wastewater generated during various production processes in order to reduce the operational load on the sewage treatment system and ensure the stable operation of the reclaimed water membrane system.