| 摘要 |
Dewatered sludge or other biomaterials stored in the open in stockpiles may be protected using storage and dispensing apparatus comprising a roller and flexible sheet material providing a cover coiled onto the roller. Inclusion of integral ballast can prevent movement of the cover by wind. The roller comprises an inflatable chamber of flexible relatively inextensible material that when deflated permits said roller and said sheet material to be compacted lengthwise of said roller and when extended and inflated assumes a round profile permitting said coiled material to be dispensed by rolling over the stockpile. The above apparatus reduces or overcomes the problems created by excess rainfall e.g. slumping and run-off.
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