Fabric Structures

Lagoons in Colorado and other locations have constructed structures suspending greenhouse fabrics of various light transmittance and opaque materials to reduce or eliminate light transmittance in small wastewater ponds. Figure 5.8 shows a partially covered lagoon located in Naturita, Colorado, that uses fabrics. The screening has been successful, but in some cases the fabrics were not fastened adequately to prevent wind damage. A cover adequately protected from the wind should be successful in reducing or eliminating algae growth. With full coverage of the surface, anaerobic conditions are possible, and aeration of the effluent may be necessary to meet discharge standards. Partial shading in correct proportions should avoid anaerobic conditions.

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