Sedimentological evolution in an UASB treating SYNTHES, a new representative synthetic sewage, at low loading rates

Impact of temperature on feed-flow characteristics and filtration performance of an upflow anaerobic sludge blanket coupled ultrafiltration membrane treating municipal wastewater

“…The feed solution was prepared in concentrated form and stored in a refrigerator at 4 C. Macronutrient and micronutrient solution compositions were slightly modified from the recipes in the studies of Aiyuk and Verstraete (2004) and Martin et al (2010), respectively. The composition of the concentrated substrate solution is shown in Table 1 (Ozgun et al, 2013a).…”

Long-term operation of a pilot scale anaerobic membrane bioreactor (AnMBR) for the treatment of municipal wastewater under psychrophilic conditions

“…COD/g SSd, attributed granulation to the high F/M ratio Aiyuk and Verstraete, (2004),. working at 33ºC, with a VLR between 1-2 Kg COD/m 3 d and HRT of 4, 8 and 10 h reported loss of granular sludge integrity, while other authors(Ghangrekar et al, 2005) reported granulation at VLRs in the range of 2.0-4.5 kg COD/m 3 d Abbasi and Abbasi, (2012).…”

Bacterial community analysis in upflow multilayer anaerobic reactor treating high‐solids organic wastes

“…One of the remarkable advantages of UMAR to a typical UASBr was its allowance for applying highly particulate substrate, up to 75.9 g particulate COD/L at the highest OLR. In a typical UASBr, the suspended solids level of the influent is < 1 g/L . The upward velocity of UMAR (0.02 m/h) is much slower than the typical upflow velocity of about 1.0 m/h for a UASBr, but is similar to that of an anaerobic plug‐flow reactor (0.01 m/h) .…”

“…In a typical UASBr, the suspended solids level of the influent is < 1 g/L . The upward velocity of UMAR (0.02 m/h) is much slower than the typical upflow velocity of about 1.0 m/h for a UASBr, but is similar to that of an anaerobic plug‐flow reactor (0.01 m/h) . The low upflow velocity can reduce the hydraulic shearing force and minimize the detachment of the captured particulate substrates, allowing sufficient contact time for solids organics .…”