TY - JOUR
T1 - Innovative hyper-thermophilic aerobic submerged membrane distillation bioreactor for wastewater reclamation
AU - Le, Huy Quang
AU - Duong, Chinh Cong
AU - Chang, Hau Ming
AU - Nguyen, Nguyen Cong
AU - Chien, I. Chieh
AU - Ngo, Huu Hao
AU - Chen, Shiao Shing
N1 - Publisher Copyright:
© 2024
PY - 2024/8
Y1 - 2024/8
N2 - For the first time, a hyper-thermophilic aerobic (>60 °C) bioreactor has been integrated with direct submerged membrane distillation (MD), highlighting its potential as an advanced wastewater treatment solution. The hyper-thermophilic aerobic bioreactor, operating up to 65 °C, is tailored for high organic removal, while MD efficiently produces clean water. Throughout the study, high removal rates of 99.5% for organic matter, 96.4% for ammonia, and 100% for phosphorus underscored the impressive adaptability of microorganisms to challenging hyper-thermophilic conditions and a successful combination with the MD process. Despite the extreme temperatures and substantial salinity accumulation reaching up to 12,532 μS/cm, the biomass of microorganisms increased by 1.6 times over a 92-day period, representing their remarkable resilience. The distillation flux ranged from 6.15 LMH to 8.25 LMH, benefiting from the temperature gradient in the hyper-thermophilic setting and the design of the tubular submerged MD membrane module. The system also excels in pH control, utilizing fewer alkali and nutritional resources than conventional systems. Meiothermus, Firmicutes, and Bacteroidetes, the three dominant species, played a crucial role, showcasing their significance in adapting to high salinity and decomposing organic matter.
AB - For the first time, a hyper-thermophilic aerobic (>60 °C) bioreactor has been integrated with direct submerged membrane distillation (MD), highlighting its potential as an advanced wastewater treatment solution. The hyper-thermophilic aerobic bioreactor, operating up to 65 °C, is tailored for high organic removal, while MD efficiently produces clean water. Throughout the study, high removal rates of 99.5% for organic matter, 96.4% for ammonia, and 100% for phosphorus underscored the impressive adaptability of microorganisms to challenging hyper-thermophilic conditions and a successful combination with the MD process. Despite the extreme temperatures and substantial salinity accumulation reaching up to 12,532 μS/cm, the biomass of microorganisms increased by 1.6 times over a 92-day period, representing their remarkable resilience. The distillation flux ranged from 6.15 LMH to 8.25 LMH, benefiting from the temperature gradient in the hyper-thermophilic setting and the design of the tubular submerged MD membrane module. The system also excels in pH control, utilizing fewer alkali and nutritional resources than conventional systems. Meiothermus, Firmicutes, and Bacteroidetes, the three dominant species, played a crucial role, showcasing their significance in adapting to high salinity and decomposing organic matter.
KW - Aerobic wastewater treatment
KW - Hyper-thermophilic activated sludge
KW - Thermophilic microorganism
UR - http://www.scopus.com/inward/record.url?scp=85197095942&partnerID=8YFLogxK
U2 - 10.1016/j.chemosphere.2024.142743
DO - 10.1016/j.chemosphere.2024.142743
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C2 - 38950740
AN - SCOPUS:85197095942
SN - 0045-6535
VL - 362
JO - Chemosphere
JF - Chemosphere
M1 - 142743
ER -