IMIS | Flanders Marine Institute
 

Flanders Marine Institute

Platform for marine research

IMIS

Publications | Institutes | Persons | Datasets | Projects | Maps
[ report an error in this record ]basket (0): add | show Printer-friendly version

A comparison of six different ballast water treatment systems based on UV radiation, electrochlorination and chlorine dioxide
Stehouwer, P.P.; Buma, A.; Peperzak, L. (2015). A comparison of six different ballast water treatment systems based on UV radiation, electrochlorination and chlorine dioxide. Environ. Technol. 36(16): 2094-2104. dx.doi.org/10.1080/09593330.2015.1021858
In: Environmental technology. Selper: London. ISSN 0959-3330, more
Peer reviewed article  

Available in Authors 

Authors  Top 
  • Stehouwer, P.P., more
  • Buma, A.
  • Peperzak, L., more

Abstract
    The spread of aquatic invasive species through ballast water is a major ecological and economical threat. Because of this, the International Maritime Organization (IMO) set limits to the concentrations of organisms allowed in ballast water. To meet these limits, ballast water treatment systems (BWTSs) were developed. The main techniques used for ballast water treatment are ultraviolet (UV) radiation and electrochlorination (EC). In this study, phytoplankton regrowth after treatment was followed for six BWTSs. Natural plankton communities were treated and incubated for 20 days. Growth, photosystem II efficiency and species composition were followed. The three UV systems all showed similar patterns of decrease in phytoplankton concentrations followed by regrowth. The two EC and the chlorine dioxide systems showed comparable results. However, UV- and chlorine-based treatment systems showed significantly different responses. Overall, all BWTSs reduced phytoplankton concentrations to below the IMO limits, which represents a reduced risk of aquatic invasions through ballast water.

All data in IMIS is subject to the VLIZ privacy policy Top | Authors