Effects of pressurized aeration on organic degradation efficiency and bacterial community structure of activated sludge treating saline wastewater
| Autor: | Biao Xie, Ying Zhou, Yong Zhang, Rui-Xiao Xu, Guoxiang Wang, Bing Li |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Powdered activated carbon treatment
Environmental Engineering 0208 environmental biotechnology Population Bioengineering 02 engineering and technology 010501 environmental sciences Biology Wastewater 01 natural sciences Waste Disposal Fluid Bioreactors Aerated lagoon education Waste Management and Disposal 0105 earth and related environmental sciences education.field_of_study Waste management Sewage Renewable Energy Sustainability and the Environment General Medicine Pulp and paper industry 020801 environmental engineering Mixed liquor suspended solids Activated sludge Sewage sludge treatment Aeration |
| Zdroj: | Bioresource technology. 222 |
| ISSN: | 1873-2976 |
| Popis: | This study was aimed to investigate the effect of moderate pressure on organic matter removal efficiency and microbial population of activated sludge treating saline wastewater. The activated sludge was cultivated with a gradual increase of salt concentrations under gage pressure of 0.3MPa for 71days. Microbial diversities of activated sludge sampled in different stages of domestication were investigated by Illumina sequencing technology. Results showed that pressurized aeration could improve the treatment efficiency and the dehydrogenase activity (DHA) of activated sludge, especially at high salinity (35, 50gNaClL-1). Bacterial richness and community diversity of activated sludge in the pressurized reactor were significantly higher than those in the control reactor. Microbial population structures were quite different between the two reactors. More species originating from fresh wastewater biological treatment process would survive and remain in pressurized activated sludge. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect