GORE™ Covers perform better than steel container walls and better than a concrete shed or pit wall.

The waste covers consist of a specially developed GORE-TEX® membrane, laminated between two highly robust polyester layers. Because the membrane has just the right pore structure, GORE™ Cover offers more than just storage cover — it is possible to selectively influence the treatment process. The membranes used in waste treatment protect the composting material from the penetration of rainwater and yet allow CO₂ produced during the composting process to escape.

Even so, odours are extensively retained. GORE™ Covers act as a physical barrier against gaseous substances escaping from the rotting material. In addition, a fine film of condensation develops on the inside of the tarpaulin covers during the composting procedure, suppressing odours and other gaseous substances. These gases are partly dissolved in the film of water and drop back into the composting material where they continue to be broken down by bacteria.

The right choice of membrane influences the extraction of moisture during composting. It prevents the final product being too wet, yet at the same time ensures that there is sufficient moisture retained to allow the material to be decomposed — particularly important in arid zones. The micro-porous structure of the
GORE-TEX® membrane means that it is practically impossible for microbes to penetrate.

Numerous microbiological tests have proved that microbes can be reduced by >99%, thus guaranteeing that workers and nearby residents are protected and safe. The insulating effect of GORE™ Cover and the pressurisation by which the system ensures even temperature distribution means that achieving the necessary temperature for sanitising the material across the entire cross-section of the heap can be guaranteed — even during the winter months. Pathogenic micro-organisms are safely destroyed throughout the entire composting material.

Principle of a Heap Enclosed in GORE™ Cover and with Controlled Pressurized Aeration

GORE™ Cover improve the composting process and satisfy all requirements for certification as an efficient and controlled composting technology.

1. Tarpaulin retainer
2. O₂-measuring probe
3. Weather impact
4. CO₂
5. Temperature profile measuring probe
6. GORE™ Cover
7. Air
8. Heat
9. Odour
10. Moisture
11. Micro-organisms