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Cleaning strategies and cost modelling of experimental membrane-based desalination plants

 
: Karimanzira, Divas; Went, Joachim; Neumann, Frank

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Volltext urn:nbn:de:0011-n-6425093 (1.0 MByte PDF)
MD5 Fingerprint: 72f412c8e43d910d5c2b49730babac51
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Erstellt am: 29.10.2021


International journal of econometrics and financial management 9 (2021), Nr.1, S.6-22
ISSN: 2374-2011 (Print)
ISSN: 2374-2038 (Online)
Fraunhofer-Gesellschaft FhG
ICON - International Cooperation and Networking; WASTEC
Energieeffiziente und nachhaltige Wasserversorgungstechnologien für Afrika
Englisch
Zeitschriftenaufsatz, Elektronische Publikation
Fraunhofer IOSB ()
Fraunhofer ISE ()
Fraunhofer IST ()
operational strategy; membrane filtration; cost estimation; cost sensitivity analysis

Abstract
In Project WASTEC, an experimental Reverse Osmosis (RO) desalination system was developed. It serves as a platform for testing new technologies. For this system, we solved two problems, which are described in this paper. Firstly, we developed and investigated strategies for scheduling chemical enhanced backwashing and chemical cleaning and secondly, due to the experimental nature of the project, several new technological developments with respect to materials and methods were integrated into the system and requires tools for evaluating the economic viability of the new technologies. In this task, the economics of membrane-based desalination will be investigated. Baseline systems of reverse osmosis and pretreatment systems (microfiltration and ultrafiltration) will be economically examined and compared for their investments and operational costs. Sensitivity of the different plant and membrane parameters to the cost will be studied. Results show that with respect to costs, for a 200m3/hr design capacity plant, a volume of water is produced by a MF process at a cost of $0.494 and at a cost of $0.486 by an ultrafiltration process microfiltration. The reverse osmosis process cannot be compared directly, but it required $ 0.49 / m3 for a plant with 56 m3/hour design capacity. The values are in line with the costs reported in literature for membrane-based filtration.

: http://publica.fraunhofer.de/dokumente/N-642509.html