The methanogenic community structures of six anaerobic sludges were examined using culture-independent techniques. The sludges were obtained from full-scale and laboratory-scale bioreactors, treating a variety of low- and high-strength, simple and complex wastewaters at psychrophilic (10-14 degrees C), mesophilic (37 degrees C) and thermophilic (55 degrees C) temperatures. Amplified rDNA restri...

The research was on the sludge start-up of SH-A process for mature landfill leachate treatment, SH-A is the combined SHARON (Single Reactor High Activity Ammonia Removal Over Nitrite) ANAMMOX(Anaerobic Ammonium Oxidation). The seed sludge was from Yangeryu Landfill of Anshan, Liaoning province of China. The landfill leachate was used to cultivate the sludge. The results showed that the start-up...

High concentration animal wastewater is often contaminated by tetracycline and an upflow anaerobic sludge bioreactor (UASB) with granular sludge is often used to treat the wastewater. The investigation of the adsorption process of tetracycline on anaerobic granular sludge during anaerobic digestion of animal wastewater will increase the understanding of antibiotics behavior in the UASB reactor....

Anaerobic modeling is a useful tool to describe and simulate the condition and behaviour of anaerobic treatment units for better effluent quality and biogas generation. The present investigation deals with the anaerobic treatment of brewery wastewater with varying organic loads. The chemical oxygen demand (COD) and total suspended solids (TSS) of the influent and effluent of the bioreactor were...

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 hydraulic characteristic of an up-flow anaerobic sludge blanket fixed film (uasb-ff) were studied by changing two important hydraulic factors that can impact significantly on the hydraulic regime of the uasb-ff bioreactor: the up-flow velocity (vup) and biogas production rate (qg). the analysis of the reactor hydraulic performance was performed by studying hydraulic residence time distribut...

High salinity is becoming more common in industrial process water and final effluents, particularly when striving to close loops. There limited knowledge on the anaerobic treatment of chemical wastewaters characterized by distinct fluctuations. This study investigates high fluctuating effects conversion capacity membrane filtration performance an bioreactor (AnMBR) treating phenol-containing wa...

In this study, a short pre-aeration step was investigated as pre-treatment for thermophilic anaerobic digestion of the organic fraction of municipal solid waste (OFMSW). It was found that pre-aeration of 48 h generated enough biological heat to increase the temperature of bulk OFMSW to 60 degrees C. This was sufficient self-heating of the bulk OFMSW for the start-up of thermophilic anaerobic di...