A lab-scale SBRK was operated to investigate the effects of aeration intensity on the system performance and microbial community dynamics within it. Results showed that the sewage nutrients was removed rapidly (just about 3-6h) with the aeration intensity increasing from 0 to 0.6MPa. Average effluent parameters were: COD below 50mg/L, NH4(+)-N less than 1mg/L, 1.5-4.5mg/L for nitrate and TP below 0.5mg/L. The highest community similarity and diversity emerged simultaneously with the aeration pressure rising from 0.2 to 0.4MPa, which was regarded as the optimal aeration intensity range. Microbial community shifted obviously and the function species of Comamonadaceae, Dechloromonas, Flavobacterium and Nitrospira dominated in the corresponding communities. RDA indicated that aeration intensity was the main factor for regulating system communities to optimize the system performance. It inferred that high aeration pressure played a key role on sewage nutrients rapid removal.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.biortech.2015.11.053 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Clinical features of atypical solid-type congenital pulmonary airway malformation (CPAM) type 1.
Pediatr Neonatol
December 2024
Division of Fetal Medicine, Center for Maternal-Fetal, Neonatal and Reproductive Medicine at the National Center for Child Health and Development, Tokyo, Japan.
Introduction: Type 1 congenital pulmonary airway malformation (CPAM) is characterized by large, dilated cysts that rapidly expand due to aeration immediately after birth, often necessitating surgical resection. In atypical cases of CPAM type 1, fetal T2-weighted magnetic resonance imaging (MRI) reveals a low-intensity solid lung mass containing multiple irregular T2 high-intensity areas.
Methods: Data were retrospectively collected for infants with atypical CPAM type 1 born at our hospital between March 2002 and December 2022.
Expression of Major Basic Protein and Endothelial Adhesion Molecules in Chronically Inflamed Mucosa of the Ethmoid Labyrinth.
Immun Inflamm Dis
December 2024
Department of Otorhinolaryngology, Faculty of Medicine of the Military Medical Academy, University of Defence, Belgrade, Serbia.
Background/objectives: Tissue remodeling, including dense eosinophil infiltration, is essential for forming inflammatory nasal polyps (NPs) and the pathogenesis of chronic rhinosinusitis with nasal polyps (CRSwNP). Toxic eosinophil major basic protein (MBP) damages the sinus mucosa epithelium and lamina propria, which initiates reparative processes leading to tissue remodeling. MBP specifically binds to BMK-13 antibodies allowing immunohistochemical (IHC) tissue staining for eosinophils.
View Article and Find Full Text PDFDoes the Intensity of Therapy Correspond to the Severity of Acute Respiratory Distress Syndrome (ARDS)?
J Clin Med
November 2024
Department of Anesthesiology, University Medical Center Göttingen, Robert-Koch-Str. 40, 37075 Göttingen, Germany.
The intensity of respiratory treatment in acute respiratory distress syndrome (ARDS) is traditionally adjusted based on oxygenation severity, as defined by the mild, moderate, and severe Berlin classifications. However, ventilator-induced lung injury (VILI) is primarily determined by ventilator settings, namely tidal volume, respiratory rate, and positive end-expiratory pressure (PEEP). All these variables, along with respiratory elastance, are included in the concept of mechanical power.
View Article and Find Full Text PDFEnhancing mesophilic methanogenesis in oleate-rich environments through optimized micro-aeration pretreatment.
Waste Manag
December 2024
School of Environmental Science and Engineering, Nanjing Tech University, Nanjing 211816, China. Electronic address:
Micro-aeration pretreatment has emerged as a promising technology for improving the performance of anaerobic bioreactors in the treatment of lipid-rich organic waste, particularly in mitigating the accumulation of long-chain fatty acids (LCFAs). Micro-aeration intensity is a critical factor in optimizing substrate hydrolysis and methanogenesis efficiency. In this study, optimal micro-aeration intensities for acetoclastic (30 mL-air/g-COD) and overall methanogenesis (7.
View Article and Find Full Text PDFInfluence of Silicate Concentrations on Growth, Carotenoid, and Fatty Acid Profiles of the Marine Diatom .
Mar Drugs
November 2024
College of Fisheries, Guangdong Ocean University, Zhanjiang 524088, China.
Article Synopsis
- This study investigates how varying silicate concentrations affect the growth and bioactive compound production in microalgae, focusing on biomass, carotenoids, and fatty acids.
- The researchers found that a silicate concentration of 120 mg L maximized biomass and carotenoid production, notably increasing levels of beneficial fatty acids like EPA and DHA.
- Conversely, silicate-deficient conditions led to higher saturated fatty acid levels, suggesting that optimizing silicate can enhance microalgal yields for commercial applications.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!