Usman Rehman

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A study was conducted for the detection of Balantidium coli and to determine the comparative efficacy of ampicillin, secnidazole and neem seeds (Melia Azadarch linn) against balantidiosis in buffaloes around Lahore. A total of two hundred buffaloes were examined coprologically. Of those, 40 were found positive (20%), twenty-four buffaloes having(More)
Complete mixing is hard to achieve in large bioreactors in wastewater treatment plants. This often leads to a non-uniform distribution of components such as dissolved oxygen and, hence, the process rates depend on them. Furthermore, when these components are used as input for a controller, the location of the sensor can potentially affect the control(More)
Current water resource recovery facility (WRRF) models only consider local concentration variations caused by inadequate mixing to a very limited extent, which often leads to a need for (rigorous) calibration. The main objective of this study is to visualize local impacts of mixing by developing an integrated hydrodynamic-biokinetic model for an aeration(More)
U. Rehman*, Y. Amerlinck*, M. Arnaldos**, J. Porro, C. De Mulder*, I. Nopens* * BIOMATH, Department of Mathematical Modelling, statistics and bio-informatics, Ghent University, Coupure Links 653, 9000 Gent, Belgium. (E-mail: ** Acciona Agua S.A., R&D Department, Av. De les Garrigues 22, 08820 El Prat del Llobregat (Barcelona), Spain +(More)
The "affinity constant" (KS) concept is applied in wastewater treatment models to incorporate the effect of substrate limitation on process performance. As an increasing number of wastewater treatment processes rely on low substrate concentrations, a proper understanding of these so-called constants is critical in order to soundly model and evaluate(More)
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