New insight into the biological treatment by activated sludge: the role of adsorption process

Bioresource Technology
Xiaochun ZhangFaming Gao

Abstract

The objective of this study was to evaluate the effect of adsorption on the biological treatment process of wastewater. In the absence of substrate in the water, activated sludge developed well in the first hour, indicating that the growth of microorganism was not directly related to substrate concentration and the dissolved organic matter in the water assays were performed, no organic matter was detected out, revealing that there was no desorption in the activated sludge adsorption process. Activated sludge batch growth experiments in the presence of different adsorption capacities indicated that specific growth rate increased as specific adsorption capacity increased. The experiment on the relationship of adsorption capacity and substrate concentration or sludge concentration was also carried out. Specific adsorption capacity increased as sludge load increased, presenting linear correlation. The experiment results showed that adsorption should be taken into account in the study of the biological treatment process of wastewater.

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Citations

Aug 5, 2016·Bioprocess and Biosystems Engineering·Majid PeyraviEtesam Ganjian
Jul 13, 2017·Environmental Technology·Etesam GanjianAli Shokuhi Rad
Mar 27, 2015·Water Science and Technology : a Journal of the International Association on Water Pollution Research·O TironC Postolache
Jul 19, 2018·Frontiers in Microbiology·Altina Lacerda NascimentoJussara Borges Regitano
Jun 6, 2017·Waste Management & Research : the Journal of the International Solid Wastes and Public Cleansing Association, ISWA·Etesam GanjianAli Shokuhi Rad
Feb 26, 2021·Journal of Environmental Management·Lucía PolaMario Díaz

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