Nelson Environmental - Lagoon Aeration - Nitrification - Wastewater Treatment - Canada - United States

Lagoon Covers

The Problem

Ball-Type Lagoon Cover - Optaer - Nelson Environmental - Lagoon Aeration - Canada - United States

Excessive algae growth in shallow settling ponds and large lagoon systems can result in elevated TSS levels and reduced effluent UV transmisivity. Blocking sunlight with a cover on the final settling cell prevents new algae growth and causes existing algae to die off and settle to the cell bottom.

An HDPE ball-type cover is a simple, effective method of covering settling cells. The balls automatically arrange themselves into a closely packed formation covering over 91 percent of the surface area.

The covers can also be used to prevent waterfowl from congregating on lagoons and ponds. Minimizing waterfowl reduces organic loading in the lagoons and bird fatalities in ponds where water may be toxic to wildlife. Ball-type covers are used extensively at or near airport locations to prevent bird fatalities to minimize the potential for aircraft bird strikes.

Ball-Type Cover Advantages

Ball-Type Lagoon Cover - Optaer - Nelson Environmental - Lagoon Aeration - Canada - United States
  • No impediment to aeration equipment pond
  • Prevent UV light penetration & surface oxygenation, maintaining anaerobic conditions
  • Prevent waterfowl fatalities at mines and airports by camouflaging highly toxic mine basins and airport stormwater drainage systems
  • Quick and simple to install
  • Spread automatically as the liquid levels rise and fall
  • Virtually maintenance free
  • Virtually indestructible UV resistant HDPE material (suitable for working conditions up to 80°C or 176°F)
  • Cannot tear like conventional membrane covers
  • Can freeze into ice covered lagoons without damage

Photo Gallery

  • Optaer - Nelson Environmental - Lagoon Aeration - Canada - United States
  • Ball-Type Lagoon Cover - Optaer - Nelson Environmental - Lagoon Aeration - Canada - United States
  • Optaer - Nelson Environmental - Lagoon Aeration - Canada - United States
  • Optaer - Nelson Environmental - Lagoon Aeration - Canada - United States