The effects of hydraulic retention time (HRT) and influent COD concentration (CODInf) on Specific Methanogenic Activity (SMA) and the biodegradability of an anaerobic sludge need to be elucidated because of the discordant results available in literature. This information is important for the operation of anaerobic reactors and design of the sludge post-treatment unit. For this study, sludge sam...

Abstract An Upflow Anaerobic Sludge Blanket reactor combined with a two-stage membrane bioreactor were operated for 193 days in order to evaluate the biological removal of carbamazepine (CBZ) from low-strength municipal wastewater. The system worked three different organic load stages (0.7 ± 0.1 kg COD·m−3·d−1, 0.4 COD·m−3·d−1 and 0.0 COD·m−3·d−1) assess impact influent OLR on operational param...

The contents presented in this paper focuses on the performance of UASB (Upflow Anaerobic Sludge Blanket) reactor for treating various industrial and domestic wastewaters at various operating conditions. The reactors can be used conveniently for the treatment of tannery, distillery, food processing, metal mining, dairy, domestic wastewater etc. The performance of the reactor mainly depends on t...

In a lab-scale upflow anaerobic sludge blanket reactor inoculated with granular sludge from a full-scale wastewater treatment plant treating paper mill wastewater, methanethiol (MT) was degraded at 30 degrees C to H2S, CO2, and CH4. At a hydraulic retention time of 9 h, a maximum influent concentration of 6 mM MT was applied, corresponding to a volumetric loading rate of 16.5 mmol liter-1 day-1...

Present work investigates the effect of upflow velocity on both biological removal efficiency and physicochemical characteristics of the effluent in a laboratory scale upflow anaerobic sludge blanket (UASB) reactor treating synthetic municipal wastewater. For this purpose, upflow velocities of 1.2 m/h, 0.6 m/h and 1.2 m/h were applied in four successive stages over a total operation period of 1...

Treating a synthetic wastewater containing phenol as the sole substrate at 26°C, an upflow anaerobic sludge blanket reactor was able to remove over 98% of phenol up to 1,260 mg/l in wastewater with 12 h of hydraulic retention time, corresponding to 6.0 g-COD/(l·day). Results showed that benzoate was the key intermediate of phenol degradation. Conversion of benzoate to methane was suppressed by ...

Methanol is an important anaerobic substrate in industrial wastewater treatment and the natural environment. Previous studies indicate that cobalt greatly stimulates methane formation during anaerobic treatment of methanolic wastewaters. To evaluate the effect of cobalt in a mixed culture, a sludge with low background levels of cobalt was cultivated in an upflow anaerobic sludge blanket reactor...

The main objective of this study was to achieve the continuous biorecovery and bioreduction Pb(II) using an industrially obtained consortia as a biocatalyst. An upflow anaerobic sludge blanket reactor used in treatment process. bioremediation technique that applied made use yeast extract microbial substrate Pb(NO3)2 source Pb(II). UASB exhibited removal efficiencies between 90 100% for inlet Pb...