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Synthetic wastewater was used in most of the works carried out with aerobic granules.


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These works were mainly focussed on the study of granules formation, stability and nutrient removal efficiencies under different operational conditions and their potential use to remove toxic compounds. The potential of this technology to treat industrial wastewater is under study, some of the results:.

Aerobic granulation technology for the application in wastewater treatment is widely developed at laboratory scales.

Sequencing batch reactor operation for treating wastewater with aerobic granular sludge

The large-scale experience is growing rapidly and multiple institutions are making efforts to improve this technology:. The feasibility study showed that the aerobic granular sludge technology seems very promising de Bruin et al. A sensitivity analysis shows that the GSBR technology is less sensitive to land price and more sensitive to rain water flow.

However, the GSBR with only primary treatment cannot meet the present effluent standards for municipal wastewater, mainly because of exceeding the suspended solids effluent standard caused by washout of not well settleable biomass. From Wikipedia, the free encyclopedia. This article has an unclear citation style.

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The references used may be made clearer with a different or consistent style of citation and footnoting. August Learn how and when to remove this template message. Londen: IWA publishing. Critical Reviews in Biotechnology. Retrieved 11 December In: Aerobic Granular Sludge. Water and Environmental Management Series. IWA Publishing. Munich, pp. Aerobic granulation in a sequencing batch reactor. Water Research, Vol. Liu Y. Effect of settling time on aerobic granulation in sequencing batch reactor. Biochemical Engineering Journal , Vol. The effects of shear force on the formation, structure and metabolism of aerobic granules.

Applied Microbiology and Biotechnology , Vol. Archived from the original on Retrieved Aerobic granular sludge: From idea to pilot plant..


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  8. In Wilderer, P. London: IWA. Archived from the original PDF on Water Research , Vol. Aerobic granular sludge in an SBR-system treating wastewater rich in particulate matter. Water Science and Technology , Vol. Nitrogen and phosphorus removal from an abattoir wastewater in a SBR with aerobic granular sludge.

    There is good evidence that the physical features of aerobic granular sludge rely upon the organic loading rate, L org. Although firm evidence is lacking, however, the exploited loading rate in this work was lower than the reported range 2.

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    This was in line with a generally assumed pattern, where an increase in L org is associated with an increase in microbial growth rate, which in turn leads to a decreased structural strength of aerobic granules 20 , In addition, the high employed feast-famine ratio, as well as anoxic feeding is believed to have played its role in the development of compact and dense aerobic granules in this work.

    The role played by EPS in the granulation might be to posse the ability to increase the hydrophobicity Table 2 and alter the surface charges on the microbial population 22 , Therefore, though hydrodynamic shear force has not been reported as a primary inducer of granulation in SBR, the development of more compact, round, and stronger granules in the present work could be ascribed by the applied high shear in terms of superficial up-flow air velocity. A significant contribution of the exchange ratio towards aerobic granulation has also been discussed on many literature works 18 , The exchange ratio was kept constant from day on.

    The fraction of granular sludge in the total biomass was deeply affected by the exchange ratio, e. The decrease in SVI might be resulted from the loss of light particles from the reactor due to discharge of a high volume of treated effluent where the fast settling and denser biomass remains in the SBR. These denser and fast settling granular aggregates noticeably declined the SVI value and concurrently enhanced the settling ability of biomass. Similar to the experiments with hydrodynamic shear force and exchange ratio, the biomass structure in the SBR was mainly affected by the given settling time Figure 8.

    The short settling time coupled with high exchange ratio adapted in this work led to select the fast settling denser biomass caused by the wash out of poorly settling fluffy flocs. The denser particles remained in the reactor eventually transformed into aerobic granules. In support of the present study, settling time has been extensively reported as a decisive factor in the formation of aerobic granules in SBR 18 , 19 , Aerobic granules with dense and strong microbial structure as well as excellent settling ability were developed with synthetic wastewater containing MEG as the sole source of carbon and energy.

    Cultivated granules showed a long biomass residence time and high and stable rate of metabolism. This combination of findings provides some support for the conceptual premise that aerobic granulation enjoy an advantage of good separation of biomass from treated effluent and consequently shorter settling time. Rev Environ Contam Toxicol. Immobilized ligninolytic enzymes: An innovative and environmental responsive technology to tackle dye-based industrial pollutants — A review.

    Sci Total Environ. Springer; Biotreatment of industrial wastewaters under transient-state conditions: Process stability with fluctuations of organic load, substrates, toxicants, and environmental parameters.

    Microbial community dynamics during aerobic granulation in a sequencing batch reactor (SBR)

    Crit Rev Environ Sci Technol. Membrane bioreactor: Applications and limitations in treating high strength industrial wastewater. Chem Eng J. Drinking water reclamation from palm oil mill effluent POME using membrane technology. Simultaneous COD, nitrogen, and phosphate removal by aerobic granular sludge.

    Biotechnol Bioeng. Aerobic granular biomass: the new standard for domestic and industrial wastewater treatment. Water Desalination Water Treat. Substrate concentration-independent aerobic granulation in sequential aerobic sludge blanket reactor. Environ Technol. Physicochemical characteristics of microbial granules. Biotechnol Adv.

    Aerobic granulation - wastewater treatment technology of the future

    Utilization of moving bed biofilm reactor for industrial wastewater treatment containing ethylene glycol: kinetic and performance study. Standard methods for the examination of water and wastewater. Liu Y, Tay JH. The essential role of hydrodynamic shear force in the formation of biofilm and granular sludge.

    Water Res. Long-term impact of salinity on the performance and microbial population of an aerobic granular reactor treating a high-strength aromatic wastewater. Bioresour Technol. Development and utilization of aerobic granules for the palm oil mill POM wastewater treatment.

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