Enhancement of biological fermented sludge dewaterability by inoculation of filamentous fungi Mucor circinelloides XY-Z and Penicillium oxalicum LY-1 |
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| Authors: | Yingying Li Yangyang Li Xinyuan Zheng Chen Zhang Ning Ding |
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| Affiliation: | 1. Department of Environmental Science and Engineering, Beijing Technology and Business University, Beijing, China;2. Key Laboratory of Cleaner Production and Integrated Resource Utilization of China National Light Industry, Beijing, China;3. State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, China |
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| Abstract: | AbstractThe two filamentous fungi of Mucor circinelloides XY-Z and Penicillium oxalicum LY-1 isolated from citric acid wastewater sludge collectively enhanced sludge dewaterability by 85.83% to achieve the lowest value of normalized sludge specific resistance (SRF) to 6.8?×?1011 m·L/kg·g-TSS. The results showed that 75.77% of slime extracellular polymeric substances (EPS), 42.99% of protein in slime EPS and 60.27% of polysaccharide in LB-EPS were degraded during activated sludge treatment by the two mixed fungi of Mucor circinelloides XY-Z and Penicillium oxalicum LY-1, contributing to the conversion of 64.61% of bound water wrapped in EPS into free water, thereby improving activated sludge dewaterability. |
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| Keywords: | Activated sludge dewaterability mixed filamentous fungal inoculation extracellular polymeric substances bound water |
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