CJ Logistics' construction division announced on the 16th that it has obtained environmental new technology certification and technology verification from the Ministry of Environment.
Environmental new technology is a system that promotes the practical application and dissemination of excellent technologies in the environmental sector by having the state certify and verify them, enhancing the competitiveness of the environmental industry. It can be divided into 'new technology certification' and 'technology verification.'
New technology certification is granted based on a comprehensive evaluation of the novelty, excellence, onsite performance, and applicability of the technology.
Technology verification is the process of confirming whether the certified technology performs as expected in actual environmental field.
In particular, in the field of wastewater treatment, both certifications must be obtained to receive benefits such as technology points in public bidding.
The environmental new technology that CJ Logistics' construction division obtained certification and verification for at the same time is 'high-efficiency wastewater membrane separation technology using C/N ratio-based automatic inflow water partitioning injection and hybrid jet venturi mixer' (CHAMP).
This technology analyzes the total organic carbon and ammonia of inflow wastewater in real time to determine the C/N ratio (Carbon/Nitrogen ratio). Based on that ratio, it automatically partitions the inflow water and adjusts the recycling rate to maximize nitrogen removal efficiency.
Using the hybrid jet venturi mixer, it efficiently maintains the mixing in the aerobic tank and dissolved oxygen (DO, Dissolved Oxygen), minimizing energy consumption and achieving high treatment efficiency with membrane bioreactor (MBR) technology.
After setting the inflow water partitioning injection ratio based on the C/N ratio, it maximizes nitrogen removal efficiency by injecting more inflow water into the anaerobic tank when the C/N ratio is low and into the aerobic tank when it is high.
It features the ability to secure stable final effluent quality even with significant variability in inflow water quality. It is also expected to achieve a 20-30% reduction in power costs compared to existing aeration systems.
This technology can be applied particularly to small and medium-sized wastewater treatment plants with significant time-of-day water quality variability, or to factory-type wastewater treatment facilities where wastewaters are complex due to various processes.
This technology development is the result of about four years of effort that began in January 2021 at the Opo Clear Water Restoration Center in Gwangju, Gyeonggi Province.
Three rounds of document review and two rounds of field surveys and sampling/analysis were conducted by 2023. Following a total of 30 field evaluations from January 2024 to January 2025 to verify the treatment efficiency of inflow and effluent water, final certification and verification were obtained simultaneously in April this year.
Based on this environmental new technology, CJ Logistics' construction division plans to propose technology for public and private wastewater treatment facilities, taking the lead in solving technical issues in the domestic wastewater treatment sector.
Min Young-hak, CEO of CJ Logistics' construction division, said, 'This environmental new technology certification is the result of research into water treatment technology based on the membrane bioreactor (MBR) technology that the company has developed since the late 1990s,' adding, 'We will continue to focus on developing advanced water treatment technology to contribute to creating a healthy aquatic ecosystem.'