Lime Stabilization Assignment Help

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Lime Stabilization

In this process, lime is added to untreated sludge to raise the pH to 12 or higher. The high pH environment inhibits the survival of micro-organisms, and thus eliminates the risk of sludge putrefaction and odour creation. Hydrated lime (Ca (OH)2) and quicklime (CaO) are most commonly used for lime stabilization. Lime is added either prior to dewatering (lime pre-treatment) or after dewatering (lime post-treatment).

 

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