ESG Report 2021

68 Environmental, Social and Governance Report 2021 The United Laboratories International Holdings Limited To implement the philosophy of “Ecology First, company has been treated up to 37,000 tonnes of Strive for Green Development”, Bayannur City, wastewater per day. After treatment of the where Inner Mongolia Company is located at, has reclaimed water reuse project, the wastewater made every effort to foster the integrative meets the standards of The Reuse of Urban management of Ulansuhai Nur according to the Recycling Water-Water Quality Standard for comprehensive management ideas of “Ecological Industrial Uses (GB/T19923-2005), and will be Water Replenishment, Pollution Control and used to replenish the circulating water in the Reduction at Source, Restoration and Treatment, company's cooling tower and in some production Re s ou rc e U t il i s at i on , and Su s ta i nabl e processes. Development”. In the past, the wastewater During the Year, Inner Mongolia Company finally generated by Inner Mongolia Company was achieved full-year zero wastewater discharge, discharged into the industrial park centralised which not only prevented pollution of water sewage treatment plant for further treatment after resources, but also further reduced the water internal treatment “pre-treatment+hydrolytic withdrawal. However, due to the long-term use of acidification+UASB/IC+CASS+catalytic oxidation+ the reclaimed water reuse system and the impact secondary sedimentation tank”, and was then of fluctuations in the quality of incoming water, discharged into Ulansuhai Nur after meeting the there are problems such as damage to the life of discharge standard through the further treatment. membrane cores and siltation of high-pressure Inner Mongolia Company has actively carried out membrane components, which restrict the reclaimed water reuse work since the second half production and treatment volume and may reduce of 2017 to utilise water resources, reduce fresh its effectiveness in the long run. Therefore, Inner water intake and achieve the goal of zero Mongolia Company carried out a new round of wastewater discharge, controlling and reducing optimisation project for zero-emission reclaimed pollution at source. At this stage, the zero- water reuse process, reviewed and planned to emission reclaimed water reuse system has been implement a series of technological transformation officially put into operation in mid-2020, and the projects. wastewater of the comprehensive recycling T h e i mp l eme n t a t i o n of t h e te c h n i c a l year. After the ultrafiltration pre-treatment facility transformation project will reduce the operating is improved, the use time of filter cartridges in the pressure of the environmental-friendly biochemical screening process will be extended, which will system. After the completion of the concentrated reduce the consumption of filter cartridges and plate and frame filtration system, Inner Mongolia extend the service life of high-pressure reverse Company is expected to reduce the amount of osmosis membrane, saving approximately discharged water by approximately 1,000 cubic RMB2,160,000 in the replacement cost of filter meters per day, saving RMB4,320,000 of core and membrane core annually. environmental waste water treatment fees per Objectives and Effectiveness In order to prevent the membrane system from sludge water generated during the operation further aggravating by siltation, Inner Mongolia process, filter the supernatant, and finally recycle Company plans to add an ultrafiltration device to it back to the second and third phases of zero pre-treat incoming water, reduce the waste discharge system for treatment, so as to ensure congestion of incoming water to high-pressure that there is no external discharge of wastewater. membrane, and extend the service life of high- The investment project also includes reverse pressure membrane. At the same time, Inner osmosis membrane device, installation, civil Mongolia Company plans to add a filtering device construction and other projects, with a total for concentrated plate and frame to treat the investment of RMB26,000,000. backwashing water from ultra filtration and saline Background Project Status Key Consumption Reduction and Optimisation -Zero Discharge Reclaimed Water Reuse Process Optimisation Project of the Year