ESG Report 2021

The complicated production process of The sewage treatment station is operated by pharmaceutical intermediates and active professional technicians . The three systems are able 3 pharmaceutical ingredients involves different kinds to treat nearly 50,000 m of wastewater per day. The of emissions. As such, Inner Mongolia Company has treated wastewater is then discharged to the implemented sewage treatment system that reclaimed water reuse system for treatment, and the integrates biochemical, physicochemical, aerobic, wastewater is fully reused to achieve zero and anaerobic feature to handle different wastewater wastewater discharge and completely avoid the risk produced such as acidic wastewater, cloth washing of environmental pollution caused by wastewater water, phenylacetic acid wastewater, crystallised discharge. mother liquor, circulating cooling water, and In addition, Inner Mongolia Company has established equipment cleaning water. Since 2007, Inner an online monitoring system on water pollutants to Mongolia Company has built a sewage treatment strictly monitor chemical oxygen demand (COD) and station, and has been expanding and renovating it ammonia nitrogen (NH - N) concentrations of the according to the demand during operation, covering 3 a total area of 500 acres. Through the treatment wastewater in the wastewater treatment system, process of “pretreatment+hydrolytic acidification preventing underground water pollution triggered by +Upflow Anaeroic Sludge Blanket (UASB)+Cyclic the “running, emitting, dropping and leakage” of Activated Sludge System (CASS)+catalytic wastewater during the wastewater treatment oxidation+secondary sedimentation tank”, the process. Furthermore, Inner Mongolia continues to sewage treatment station can effectively treat implement wastewater pollutant reduction projects to various water pollutants generated during the reduce the pressure on wastewater treatment production processes in Inner Mongolia Company. facilities. Wastewater Treatment In order to mitigate the impact to sewage treatment equipment. With its capability of treatment system brought by the production reducing the use of fresh water by about of pharmaceuticals, Inner Mongolia Company 4,200 per day, the whole project not only has invested in and completed two phases of lowers the concentration of wastewater, but is MVR projects to improve the efficiency of also conductive to the reuse of reclaimed sewage treatment and safeguard the water and the realisation of the treatment and effectiveness of the biochemical system. MVR reuse of condensate. technique is an energy-saving and Currently, the acidic wastewater MVR system environmentally-friendly technology that 3 has a processing capacity of 12,000m per compresses the flash steam produced by the day, and acidic wastewater generated can be system itself to increase thermal energy, and completely treated. The project also circulates heat to the evaporation system to performed evaporation and concentration of reduce the demand for steam production. acidic wastewater to reduce the chemical Last year, Inner Mongolia Company carried oxygen demand (COD) of acidic wastewater out renovation and expansion on the original from 15,000 mg to 1,500 mg per liter, acidic wastewater MVR processing project, reaching a 90% decline, and effectively which allowed efficient acidic wastewater pre- mitigated water pollution resulted from the treatment, more stable operation, higher production process of pharmaceuticals. degree of automation and effectively reduced the burden on the sewage biochemical 3 m Emission Reduction Project- Acidic Wastewater MVR Project 73 Environmental, Social and Governance Report 2021 The United Laboratories International Holdings Limited