Long-term structure stability of aerobic granules is critical to maintaining stable wastewater treatment performance. In this study, granulation and long-term sludge-treating synthetic with a low chemical oxygen demand nitrogen (COD/N) ratio 4:1 COD concentration 400 mg/L in anoxic-oxic conditions were investigated for over 300 days. Inoculated suspended sludge gradually transformed into granul...

The article discusses the prospects for purification of industrial wastewater from phenols in oil refining, petrochemical and chemical industries with production waste. technological scheme treatment by modified carbonate sludge is given. In technologies, it proposed to use a large-tonnage energy waste - sludge. paper considers technology granulation, its characteristics are studied. To evaluat...

In this study, gelation-facilitated biofilm formation as a new mechanism is proposed for the phenomenon of aerobic granulation in biological wastewater treatment. To obtain an experimental proof for the gelation-based theory, the granulation process was simulated in a chemical system using latex particles for bacterial cells and organic polymers (alginate and peptone) for extracellular polymeri...

Aerobic granulation, a novel environmental biotechnological process, was increasingly drawing interest of researchers engaging in work in the area of biological wastewater treatment. Developed about one decade ago, it was exciting research work that explored beyond the limits of aerobic wastewater treatment such as treatment of high strength organic wastewaters, bioremediation of toxic aromatic...

The mechanism of biomass granulation in anaerobic reactors has been widely studied in the hope that this could be helpful in manupulating the rate and extent of granule formation, particularly in wastewaters that show little intrinsic propensity to granulate (e.g. fat and oil containing effluents). Similarly, in this study, sets of sludge samples were taken from Normal Fed Anaerobic Baffled Rea...

Abstract In the era of circular economies, municipal wastewater treatment plants (WWTPs) are viewed as resource recovery facilities. At very minimum, targeted resources water, biogas, and phosphorus. However, streams (sludge effluent) need to be adequately treated eliminate potential for transmission microbial pathogens including protozoa, bacteria, viruses. This paper presents results from a s...

Current extensive research on aerobic granular sludge (AGS) largely focuses improving its microbial biodiversity, settlement behavior, nitrogen and phosphorus removal efficiency, shock load resistance. Great challenges that have to be faced are the bottleneck of slow-speed granulation easy disintegration after granulation, which key extended application AGS technology. In present review, typica...

The granulation of anammox sludge plays an important role in the high nitrogen removal performance of the anammox reactor. In this study, anaerobic granular sludge was selected as the seeding sludge to start up anammox reactor in order to directly obtain anammox granules. Results showed that the anammox UASB reactor was successfully started up by inoculating anaerobic granular sludge, with subs...

Environmental security is an important part of Ukraine's national security. It provides for the maintenance and improvement environment should have a set measures to prevent danger population. occurrence One issues environmental safety in Ukraine accumulation obsolete sludge after wastewater treatment at aeration stations. Untreated has been merging into overcrowded sites several decades, which...