Modeling the activated sludge floc microenvironment

14Citations
Citations of this article
16Readers
Mendeley users who have this article in their library.

Abstract

Integrated modeling of activated sludge systems will only be complete when settling characteristics can be determined within the model. These characteristics are fundamentally related to the size, shape and porosity of both the sludge flocs and their component microcolonies. Microcolony porosity is of particular interest since it may both influence, and be influenced by, the substrate and electron acceptor gradients that establish competitive microenvironments. A model was developed to explore the relationship between biomass growth, death, and hydrolysis; soluble component diffusion and microcolony porosity. A key element of the model is the assumed distribution of daughter cells following replication. Preliminary results indicate rapid progression toward minimum porosity with relatively slow expansion of the microcolony surface. Although little is documented on porosity variation within flocs, these results contrast with observations for biofilms and may emphasize the difference between the mechanisms involved in the structural development of microcolonies and larger scale aggregates.

Cite

CITATION STYLE

APA

Scuras, S., Daigger, G. T., & Grady, C. P. L. (1998). Modeling the activated sludge floc microenvironment. In Water Science and Technology (Vol. 37, pp. 243ā€“250). Elsevier Sci Ltd. https://doi.org/10.1016/S0273-1223(98)00114-0

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free