Model-based performance and energy analyses of reverse osmosis to reuse wastewater in a PVC production site. Issue 13 (10th November 2017)

• Record Type: Journal Article
• Authors: Hu, Kang; Fiedler, Thorsten; Blanco, Laura; Geissen, Sven-Uwe; Zander, Simon; Prieto, David; Blanco, Angeles; Negro, Carlos; Swinnen, Nathalie
• Is Part Of: Journal of environmental science and health. Volume 52:Issue 13(2017)
• Page Start: 1218
• Page End: 1225
• Publication Date: 2017-11-10
• Subjects: Film theory -- energy analysis -- PVC production wastewater -- reverse osmosis -- solution–diffusion model; Environmental engineering -- Periodicals; Environmental sciences -- Periodicals; Ecology -- periodicals; Hazardous Substances -- periodicals; 628
• DOI: 10.1080/10934529.2017.1356194
• Languages: English
• ISSNs: 1093-4529

Abstract

ABSTRACT: A pilot-scale reverse osmosis (RO) followed behind a membrane bioreactor (MBR) was developed for the desalination to reuse wastewater in a PVC production site. The solution–diffusion–film model (SDFM) based on the solution–diffusion model (SDM) and the film theory was proposed to describe rejections of electrolyte mixtures in the MBR effluent which consists of dominant ions (Na + and Cl − ) and several trace ions (Ca 2+, Mg 2+, K + and SO4 2− ). The universal global optimisation method was used to estimate the ion permeability coefficients (B) and mass transfer coefficients (K) in SDFM. Then, the membrane performance was evaluated based on the estimated parameters which demonstrated that the theoretical simulations were in line with the experimental results for the dominant ions. Moreover, an energy analysis model with the consideration of limitation imposed by the thermodynamic restriction was proposed to analyse the specific energy consumption of the pilot-scale RO system in various scenarios.