Environmental Engineering Reference
In-Depth Information
Application issues
Benefi ts
Limitations
Plastic dispenser
required
Relatively simple to
deploy and can be
left in place
Slow acting (i.e. days/
weeks)
May inconvenience
port operations
100% effective if applied
correctly
Cost-effective
Structures /habitats can
be treated
in situ
Can remain on for long
periods and may act as a
secondary treatment
Unselective
May emit offensive odours
Disposal issues (plastic and
collected biota)
Diver safety issues
Fast acting
Safety gear required
Requires attention to
ensure effective
concentration
Can quickly treat
structures that are in heavy
use (i.e. vessels, pontoons)
Minimize any larval
release
Potentially hazardous
Collateral damage
Can be expensive
Disposal issues
Potentially corrosive
Labour intensive
Specialized equipment
may be required
Only practical over
small areas
Requires good
underwater visibility
Environmentally
friendly
Collateral damage
Diver safety issues
Specialized equipment
required
Only practical over
small areas
Cost-effective
Unselective
May result in secondary
impacts if dredge spoil is
contaminated (e.g. heavy
metals)
May provide suitable
substrate for further
invasions
Fast acting
Safety gear required
Requires attention to
ensure effective
concentration
Can quickly treat structures
that are in heavy use
(i.e. vessels, pontoons)
Minimize any larval release
Potentially hazardous
Unselective
Can be expensive
Disposal issues
Potentially corrosive
