Private
and golf course ponds
Introduction
We
can observe two main types of standing water: lakes and ponds. There
is not a sharp distinction between them, but generally, a pond is defined
as a body of water in which light can reach the bottom in all places.
In contrast, light cannot reach the bottom in deeper spots in a lake.
Lakes are bodies of water greater than one acre in size; ponds are smaller
and shallower. Great Ponds are lakes that are larger than ten acres.
Natural pond, lake, artificial retention ponds and water hazards require
a delicate biological and chemical balance to maintain a "healthy" aquatic
ecosystem. Promoting a healthy or balanced ecosystem can prevent nuisance
problems such as prolific weed and algae growth, mosquitoes, stagnant
water conditions and odors.
Stormwater runoff are treated in retention basins/ponds specially designed
to retain and provide sedimentation and reduce pollutants. But Stormwater
runoff from residential areas typically has high organic and nutrient
concentrations from grass clippings, leaves and fertilizers. Runoff
from commercial areas and roadways contribute significant amounts of
litter and debris as well as hydrocarbons and heavy metals. The capacity
of a retention pond to reduce pollutants can be affected by many conditions
such as: accumulated nutrients and sediments, stagnant and anoxic conditions,
waterfowl habitation, and cold winter conditions.
Stormwater and golf course ponds can quickly become overloaded with
nutrients and sediment causing algae and weed growth to dominate. Stagnant
and anoxic conditions are odorous, reduce the biological capacity of
a pond and are excellent mosquito breeding grounds. Waterfowl populations
contribute greatly to nutrient and fecal bacteria levels in ponds. Winter
conditions and ice cover can reduce the biological and holding capacity
of a pond.
Solution
By oxygenating the pond, we provide a high degree of biological
activity that solve numerous problems associated with either stormwater
retention ponds or golf course water hazards. Biological activity is
important for reducing pollutants such as hydrocarbons and reducing
accumulated organic matter. It is important to maintain high oxygen
levels in order to prevent stagnating conditions, algae growth and associated
odors.
ADS aeration has been developed to sustain
biological activity, increase oxygen levels and water clarity, reduce
algae growth, and winter ice thickness (increase available spring pond
volume by ice-melting). Continuous mixing through proper "grid" coverage
ensures that adequate oxygen is supplied to all areas of the water body.
By introducing the air at the pond or lake bottom, efficient mixing
and oxygen transfer can occur. In order to increase oxygen transfer
and bacteria killing, an EPAeration®
system is generally added, providing the amount of Ozone required.
Bacta-Pur® bioaugmentation helps sustain
beneficial communities of natural soil and water bacteria to clear water,
limit algae growth and reduce solid accumulation and plant growth in
water bodies.
AquaMats® biofiltration curtains when used
in combination with ADS and Bacta-Pur® provide massive surface area
for high concentrations of beneficial bacteria and organisms such as
snails and worms. These increased concentrations further stress and
reduce algae and plant growth.
Performance
Odor control in a stormwater or golf course pond is typically
realized within two days of starting a PNW system. Surface algae reduction,
water clarity and a general positive shift in the aquatic ecosystem
typically occur within 3 to 6 weeks after system startup.