Abstract
A review of the literature published in 2008, 2009 and 2010 relating to activated sludge treatment of wastewater is presented. The review considers information on the topics of modeling and kinetics; process microbiology; nitrogen and phosphorus removal; treatment and effects of xenobiotics; oxygen transfer; and solids separation.
Highlights
The scope of research being conducted in the field of activated sludge wastewater treatment has grown steadily as scientific understanding of fundamental microbial behavior has increased and more sophisticated engineering designs have been developed to modify the basic process
Some recent research into activated sludge modeling has focused on modified processes such as membrane bioreactor (MBR), moving bed biofilm reactor (MBBR), and integrated fixed-film activated sludge (IFFAS)
Substrate flux across the biofilm was described with analytical solutions to a 1-dimensional biofilm integrated with an expanded matrix similar to that used for the Activated Sludge Model Number 2D (ASM2d)
Summary
The scope of research being conducted in the field of activated sludge wastewater treatment has grown steadily as scientific understanding of fundamental microbial behavior has increased and more sophisticated engineering designs have been developed to modify the basic process. The objective of this paper is to review some of the major research results on the topic of activated sludge treatment published in 2008, 2009 and 2010. Since there is so much information available for this period, this review presents a sample of the available findings in the selected areas of modeling and kinetics, process microbiology, nitrogen and phosphorus removal, treatment and effects of xenobiotics, oxygen transfer, and solids separation
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