The Right Lid for the Job

David Dubey

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The Right Lid for the Job

Because digester gas production is not constant, storage is needed to buffer the gas utilization equipment. (Average hourly gas production typically requires 6 to 8 hours of minimum storage.) The digester provides vital storage, and selecting the right cover type and design to meet the facility’s priorities and needs should be equally important. Consider the following when making decisions to maximize your facility’s sustainability.

Author(s)

David Dubey

Subjectsustainability;odors & emissions;sustainability

Document typeMagazine Article

PublisherWater Environment Federation

Print publication date Apr 2021

Volume / Issue33 / 4

Content sourceWE&T magazine

First / last page(s)40 - 45

Word count2,282

Subject keywordsdigester coversteel covermembrane cover

Purchase price $5.50

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Steel or Membrane

The Right Lid for the Job

Back in 1925, digester covers were made with steel plates welded to the bottom of steel trusses. Wood rafters and wood planking were added to the top to provide insulation and weather protection for the roof. Traditional roofing materials — tar and felt — were covered with pea gravel. Additionally, concrete was used.