Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE credits
Antifouling paints are a big enemy to the marine ecosystem. Many tons of copper, zinc and other harmful substances are released into the environment each year, in Sweden alone.
This study concentrates on the mechanical antifouling method, using boat washes instead, which is a more sustainable alternative. It comes with reduced fuel consumption, increased speed, and moreover, no need for grinding and painting the hull each year.
As long as paint residues remain on hulls, but the boat washes are used instead of new paint, it is desired to collect what is scraped of the hulls. By collecting paint flakes and particles accumulated in organic material, the environmental impact is reduced further. The scope of this Master’s thesis is to design a collection device for the portable boat wash Miniwash.
A collection device with a cleaning system was developed using the pump effect from the brushes along with an extra pump to press the contaminated water through a bag filter taking most of the particles. One can expect as much as 70% of the harmful particles can be taken care of, according to the filter manufacturer, based on given conditions and filter bag pore sizes. By always having a flow of 8 cubic meters per hour through the cleaning system, it is assumed that not much of the cleaning water will escape, not passing through The bag filter.
2012. , 97 p.