A novel wastewater treatment system has been developed, utilizing an oxygen-rich algal liquid to supply oxygen to an aerobic biofilm reactor. Aerobic treatment of wastewater takes place in a Moving Bed Biofilm Reactor, where the aerobic biomass which breaks down organic and nitrogenous pollutants grows as a biofilm on floating carriers. Algae grown in an open raceway pond produce oxygen through...

Vibrio cholerae is an estuarine bacterium and the human pathogen responsible for the diarrheal disease cholera. In the environment, arthropods are proposed to be carriers and reservoirs of V. cholerae. However, the molecular basis of the association between V. cholerae and viable arthropods has not been elucidated previously. Here, we show that the V. cholerae Vibrio polysaccharide (VPS)-depend...

A modified oxygen uptake rate (OUR) test for characterizing the performance of integrated fixed-film activated sludge (IFAS) processes was developed while monitoring the startup of a full-scale demonstration facility. Data on total biofilm solids, in-basin nitrification rates, and batch nitrification rates were compared to the OUR test. The data was used to investigate dynamic changes in the ph...

The performance of a commercial starter culture was investigated in new marine post-smolt RAS, analyzing the microbial communities 100 samples collected monthly over year from biofilter biofilm carriers, tank wall biofilm, production water and fish skin. Totally 139 operational taxonomic units (OTUs) were defined culture, which classified members Rhodobacterales, Bacteroidetes, Alteromonadales ...

Abstract Many wastewater treatment plants are dependent on the utilization of microorganisms in biofilms. Our knowledge about establishment these biofilms is limited, particular with respect to involved enhanced biological phosphorus removal (EBPR). These rely polyphosphate-accumulating organisms (PAOs), requiring alternating oxic and anaerobic conditions for phosphorous uptake. This challenge ...

Factors affecting filtration characteristics in submerged hollow fiber membrane were investigated in membrane-coupled moving bed biofilm reactor (M-CMBBR). The trend of membrane biofouling in M-CMBBR was quite different from that in a conventional membrane bioreactor (MBR). The M-CMBBR showed much lower biofouling rate than a conventional MBR. Whereas the membrane biofouling in conventional MBR...

Salmonella enterica subspecies enterica serovar Typhi is the aetiological agent of typhoid or enteric fever. In a subset of individuals, S. Typhi colonizes the gallbladder causing an asymptomatic chronic infection. Nonetheless, these asymptomatic carriers provide a reservoir for further spreading of the disease. Epidemiological studies performed in regions where S. Typhi is endemic, revealed th...

The development of novel biomass carriers is an option for increasing the efficiency processes at wastewater treatment plants (WWTPs). Biomass support adhesion specific bacteria and subsequent biofilm formation. As part this work, a new type microfibrous carrier with unique sandwich structure was developed. Technologically, based on warp knitted spacer fabric created double-needle bar machine. ...