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What is the interest of using lime in sludge treatment?

Main liming sludge performances:



Increase of their agronomic value

Indeed limed sludge :
- improve soil structure, and have positive effects on infiltration, drainage and water-holding capacity
- maintain or increase the soil pH



There are numerous interests in liming sludge :

- reducing of the sludge, toward dry matter increase

- stabilization and hygienization of the sludge

- inerting heavy metals present in sludge

- improvement of the sludge characteristics for their disposal or further utilization, such as agriculture recycling, toward: odor reduction, structuring, improvement of their ease of use, and increase of their agronomic value

- improvement of centrates and filtrates quality (N,P)


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