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Cost-Benefit analysis of water disinfection

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Cost-Benefit analysis of water disinfection

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Samenvatting

This project is about the calculation of the cost of ultrasonic water disinfection. Ultrasonic water disinfection is a new technology, which is not used in large scale in the practice like some common technologies such as chlorine, ozone and UV. It is not straightforward to calculate the cost of ultrasonic disinfection system. Therefore, the calculation method is based on the comparison of the different disinfection methods.

The cost of a disinfection system is mainly divided into two parts: investment cost and operational cost. In this project, the flow rate of three technologies is assumed to be 500 m3/h. Considering the change caused by the operational cost, the time horizon of the investment is set at 25 years with the inflation rate of 1.5% and a residual value rate of 5% after 10 years.

Through calculating the cost price of chlorine, ozone and UV (the unit is in €/m3), three prices were obtained, they are: 3.96 cent/m3, 5.73 cent/m3 and 3.75 cent/m3, respectively.

Because there are three different ways to calculate the cost of disinfection systems, there may be some inaccuracy caused in the comparison of these three technologies. In principle, if the ultrasonic disinfection will be used in the current market in the future, to be competitive and reasonable, the cost should be set between the lowest one and the highest one. According to the result of this project, the cost range is 3.75 cent/m3 to 5.89 cent/m3.

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OrganisatieHZ University of Applied Sciences
OpleidingWerktuigbouwkunde
InstituutAcademie voor Technologie & Innovatie
PartnersHZ Delta Academy, Vlissingen
Gepubliceerd in
Datum2011-06-20
TypeBachelorscriptie
TaalEngels

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