Incorporating Sulfur and Relevant Reactions into a General Plantwide and Sewer Model

Sulfur is known to cause nuisances in wastewater treatment and sewer collection systems, such as corrosion, odours, oxygen demand, and precipitates. This is often handled through chemical addition, which will impact the subsequent wastewater treatment processes. Despite its importance, there is no integrated sulfur model for whole plant process optimization/design that could be used in practice. After a detailed literature review of chemical and biokinetic sulfur reactions, a plantwide model is upgraded with relevant reactions to predict the sulfur cycle in sewer collection systems, wastewater and sludge treatment as well as to estimate a risk of odour emissions. The developed model is applied on different case studies. (C) 2017, IFAC (International Federation of Automatic Control) Hosting by Elsevier Ltd. All rights reserved.