Evaluation Of Physicochemical Parameters
Influencing Bulking Episodes In A Municipal
Wastewater Treatment Plant
Author(s)
J. Bayo, J. M. Angosto, J. Serrano-Aniorte, J. A. Cascales-
Pujalte, C. Fernández-López & J. López-Castellanos
Abstract
A study of physicochemical parameters in a municipal wastewater treatment
plant was undertaken to consider the presence of bulking phenomena by means
of statistical and logistic regression analyses. There appears to be an important
effect on activated sludge settleability that can be related to the temperature of
wastewater. Besides, there were significant differences between the percentage
of nitrogen removal from the secondary treatment with the season. The SVI
increased with conductivity, meanwhile BOD5 removal decreased with this
parameter. The development of logistic regression models identified two
statistically significant variables that appeared to be important to the contribution
of a higher SVI: season and pH.
Keywords: wastewater, physicochemical parameters, bulking, modelling.
1 Introduction
Wastewater treatment plants are complex systems, with different physicochemical
and biological phenomena taking place simultaneously. Wastewater
collected from municipalities and communities must ultimately be returned to
receiving waters or to the land [1]. Besides, due to the limited water resource, a
great attention is being paid into reclamation and reuse of wastewater from
municipalities mainly for irrigation [2]. In all cases, water quality standards are
becoming more and more stringent.
Keywords
wastewater, physicochemical parameters, bulking, modelling.
Related Book
Other papers in this volume
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