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Progress toward full scale application of the anaerobic side-stream reactor (ASSR) process

TitoloProgress toward full scale application of the anaerobic side-stream reactor (ASSR) process
Tipo di pubblicazioneArticolo su Rivista peer-reviewed
Anno di Pubblicazione2019
AutoriFerrentino, R., Langone Michela, and Andreottola G.
RivistaBioresource Technology
Parole chiaveactivated sludge, Activated sludge process, Aeromonas sobria, Ammonium compounds, ammonium derivative, anaerobic bacterium, Anaerobic digestion, anaerobic growth, Anaerobiosis, article, Bacteria, bacterial cell, bacterium, Batch reactors, Bioreactor, Bioreactors, Biotechnology, carbon, Chemical oxygen demand, chemistry, comparative study, controlled study, Conventional activated sludges, denitrification, denitrifying bacterium, DNA extraction, Efficiency, energy consumption, Fermentation, Fluid, heavy metal removal, Hydrolysis, investment, metabolism, Microbial communities, Microbial community, microbiology, Nitrogen, Nitrogen removal, nonhuman, Nutrient removal efficiency, phosphate, phosphate transport, Phosphate-accumulating organisms, pollutant removal, Polymerase Chain Reaction, procedures, Proteobacteria, Quantitative polymerase chain reaction, Reduction, retention, River, Rivers, sewage, Side streams, Sludge reduction, solid, Solid retention time, Solids retention time, suspended particulate matter, Verrucomicrobia, Waste disposal, waste water management, Wastewater treatment

In order to reduce the investment costs of the anaerobic side-stream reactor (ASSR) process coupled with an activated sludge system and promote the full scale application, the impact of 1 d anaerobic solid retention time (SRTASSR) and 100% interchange ratio (IR) has been investigated on sludge reduction, carbon and nutrient removal efficiency and microbial community, in a sequencing batch reactor (SBR)-ASSR system. The SBR-ASSR achieved good removal efficiencies in COD (91.5 ± 3.4%), ammonium nitrogen (98.8 ± 0.5%), total nitrogen (87.9 ± 4.9%) and phosphate (92.8 ± 6.7). The sludge yield of the system was 0.1648 g TSS g−1COD; 54% lower compared to a conventional activated sludge (CAS) system. Real time quantitative polymerase chain reaction (q-PCR) showed an abundance of hydrolyzing and fermentative bacteria. Comparison at class and genus level confirmed an abundance of anaerobic hydrolyzing and fermentative bacteria, denitrifying bacteria able to simultaneous perform nitrogen and phosphate removal and phosphate accumulating organisms. © 2018 Elsevier Ltd


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Citation KeyFerrentino2019267