Ballast Water Analysis And Heat Treatment Using Waste Heat Recovery Systems On Board Ships

Ballast water contains a variety of organisms including bacteria, viruses and the adult and larval stages of the many marine and coastal plants and animals. As such, it poses serious ecological, economic and health problems and has serious negative effects on the global environment. This paper presents a new efficient ballast water analysis and heat treatment system using waste heat recovery system on ships. The project demonstrates laboratory methods to verify killing efficiency of microorganisms in sea water exposed to heat treatment over a short period of time. Heating times were varied in a range from 20 seconds to 3 minutes. The microorganisms were measured using a flow cytometry instrument and fluorescence microscopy to detect living and dead organisms in untreated and treated water. Based on the biological analysis, a related heat treatment simulation was carried out to confirm the control method.