Chinese wastewater treatment plant expands capacity with DuPont OxyMem MABR technology

DuPont OxyMem helps expand capacity and improve the effluent quality of a wastewater treatment plant in Lanzhou, China.

The operators of one of the main wastewater treatment plants in the Gansu province, China, have deployed membrane aerated biofilm reactor (MABR) technology, to assist efforts to improve the water quality of the Yellow River while expanding the capacity to support the economic growth of this industrial hub.

DuPont OxyMem MABR modules have been installed at the plant to help treat additional process capacity and help ensure the plant is equipped to manage growing demand from the rapidly expanding population of the Gansu province. Effluent discharged into the nearby Yellow River will now comply with GB18918-2002 Class 1-A standards, providing a significant boost to efforts to improve water quality.

Tracy Chan, market development manager, Greater China, DuPont Water Solutions, explained: “After a detailed preparation, the installation of MABR modules only took one day without draining the tank and had no impact on the biological treatment of the plant. OxyMem MABR has proven to be a great solution addressing the Chinese government’s directions on low carbon and high-efficiency technology for biological wastewater treatment.”

The DuPont OxyMem MABR system will help intensify the wastewater treatment process at the activated sludge plant, providing significant efficiency improvements in oxygen transfer. The OxyMem MABR technology requires approximately 75% less energy than conventional treatment methods, DuPont claimed. Furthermore, the ‘drop-in’ technology was integrated liv into the treatment process. Its reduced footprint has been “invaluable” for this project, the company added, because of the space constraints in the plant. As a result, the wastewater treatment plant can now benefit from an increase in biological treatment capacity while maintaining overall effluent quality.

Andreas Gorenflo, managing director of OxyMem, concluded: “This forward-looking investment in biological treatment technology ensures that the wastewater treatment plant is equipped for the continued growth of the city while reducing pollution going into the Yellow River. We are happy having helped our customer in Gansu province to improve the performance of their wastewater treatment plant with minimum effort and maximum impact allowing them to meet stringent effluent standards and achieve the plant’s sustainability goals.”