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Biodigester Tank Floating Cover System - Prefabricated LLDPE-R Geomembrane

L238039_USA Lake Norden Floating Cover (1)

Industry

Wastewater

Challenge:

A dairy processing plant required a replacement gas-collecting floating cover for its concrete biodigester tank after the original failed due to improper materials and installation.

Achievement:

Titan delivered a turnkey, pre-fabricated floating cover system using 234 custom foam sections, eliminating on-site welding and ensuring a high-quality, cost-effective installation despite extreme heat conditions.

Product Used:

LLDPE Liner

Location: Lake Norden, South Dakota

Project Type: Product Supply & Installation

Product Used: LLDPE-R Prefabricated Geomembrane

Challenge

A dairy processing plant needed a new gas collecting floating cover for a concrete biodigester tank. The floating cover had failed due to unsuitable material and poor installation method.

Titan Solution

L238039_USA Lake Norden Floating Cover (5)

Responding to the need for a more robust and durable cover system, Titan supplied and installed a cover system which consisted of prefabricated LLDPE-R geomembrane with a modular 4” thick foam insulation layer. LLDPE-R was the best solution for this system due to its outstanding flexibility and resistance to low temperatures and ultraviolet exposure.

The failing cover was removed to make way for installation of the new, system. Following this, the new cover was mechanically fastened around the perimeter of the tank to create a gas-tight seal. This creates a barrier preventing the release of biogas into the atmosphere. This gas is then collected and used to produce heat. The project was successfully completed with high attention to installation quality.

 

LLLDPE geomembrane is manufactured from virgin polyethylene resins, offering great flexibility and outstanding resistance to low temperature and ultraviolet exposure.

Achievement

The Cover and insulation layer were custom fabricated for easy installation in the field without any on-site cover welding required. A total of 234 sections of foam that are 4” thick by 48” wide by 108” long were used to make up the cover.

We pre-connected them into sections of 6, 5, and 3 floats to send out to the field to be assembled into the larger cover. Our fabrication team uses the latest seaming technology and follows the highest quality assurance standards in the industry to deliver top-notch products.

Titan provided a turn-key solution that was both durable and cost-effective, while our highly trained technicians installed the system with quality precision despite the record-breaking heat conditions.

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