Pilot-scale investigation of sludge reduction in aerobic digestion system with endospore-forming bacteria
| Autor: | Eilhann E. Kwon, Jörg Rinklebe, Chanhyuk Park, Yong Su Choi, Yiu Fai Tsang, Man Bock Gu, Kyu Won Seo |
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| Rok vydání: | 2017 |
| Předmět: |
Environmental Engineering
Health Toxicology and Mutagenesis Microorganism 0208 environmental biotechnology Pilot Projects 02 engineering and technology 010501 environmental sciences Biology Membrane bioreactor Waste Disposal Fluid 01 natural sciences Bioreactors Environmental Chemistry Aerobic digestion Effluent 0105 earth and related environmental sciences Suspended solids Sewage Waste management Public Health Environmental and Occupational Health General Medicine General Chemistry Pulp and paper industry Pollution Aerobiosis 020801 environmental engineering Mixed liquor suspended solids Endospore-Forming Bacteria Sewage sludge treatment Sludge |
| Zdroj: | Chemosphere. 186:202-208 |
| ISSN: | 0045-6535 |
| DOI: | 10.1016/j.chemosphere.2017.07.150 |
| Popis: | A pilot-scale investigation of membrane-based aerobic digestion system dominated by endospore-forming bacteria was evaluated as one of the potential sludge treatment processes (STP). Most of the organic matter in the sludge was removed (90.1%) by the particular bacteria in the STP, which consisted of mixed liquor suspended solid (MLSS) contact reactor (MCR), MLSS oxidation reactor (MOR), and membrane bioreactor (MBR). The sludge was accumulated in the MBR without wasting, and then the effluent in STP was fed into the first step in water resource recovery facility (WRRF). According to the analysis of microbial communities in all reactors, various Bacillus species were present in the STP, mainly due to their intrinsic resistance to the extreme conditions. As the surviving Bacillus species might consume degraded microorganisms for their growth, these endospore-forming bacteria-based STP could be suitable for the sludge reduction when they operated for a long time. |
| Databáze: | OpenAIRE |
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