Prevent UV Light Penetration & Surface
Oxygenation
- Maintain anaerobic conditions where required.
- Reduces penetration of UV rays : preclude growth of algae
and clogging weeds. Aeration can be installed underneath the
Bird Balls™ system to ensure aerobic conditions are maintained.
Prevent Waterfowl Fatalities
- Camouflage highly toxic mine basins.
- FAA's "Wildlife Hazard Management At Airports" manual states
that "Complete coverage of ponds with bird balls will completely
exclude birds."
- Transport Canada Bulletin no. 25 states that "The balls
hide the water from the birds and as a result they don't see
the ponds...the balls (Bird Balls™) adjust to changing water
levels, are easy to install and survive winter conditions. "
Risk Management Plans for Chemical Tank
Farms
- Provide a dormant evaporation reduction system for tank farm
containment areas (i.e. ammonia)
- If a spill or tank rupture occurs, the Bird Balls™ system
surrounding the tanks reduce the environmental and safety impact
from sudden chemical exposure and evaporation to the atmosphere.
- Spill cleanup can be performed without removing the Bird Balls™.
Specifications
Chemical resitance :
Bird Balls™ are manufactured with :
PVDF -- This material offers significant increases in operating
temperatures up to 320°F (160°C), providing resistance
to many aggressive chemicals where other plastics would fail.
Polypropylene (PP) -- Able to withstand continuous working temperatures
of up to 230°F 110°C. Suitable for contact with most chemicals
used in the metal treatment industry.
High Density Polyethylene (HDPE) -- Suitable for working conditions
up to 176°F (80°C). HDPE is recommended for all external
applications due to its enhanced resistance to freezing conditions.
Black, UV stabilizing additives prevent the degrading effects
of sunlight. HDPE is also recommended for demineralized water
and Chromic acid applications.
Ball diameter and surface coverage
There are different sizes and weights. PNW mainly distribute Bird
Ball™ having the following specifications :
- Diameter: 100 mm
- Average Weight: 40 g
- Number per sq.ft: 10
- Number per sq.meter: 116
The percentage of area covered by the balls is independent of
the ball diameter, being the ratio of a circle to the hexagon
which surrounds it. This equates to 91% of the liquid surface
area. The frictional contact points ensure that each ball remains
stable when subjected to increased liquid or air turbulence.