what us sludge? Write any 2 uses of sludge
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The usage of municipal sewage sludge as fuel supports the saving of fossil fuel emission. Sludge is usually treated before disposal to reduce water content, fermentation propensity and pathogens by making use of treatment processes like thickening, dewatering, stabilisation, disinfection and thermal drying.
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Sludge produced by a water treatment plant has three main uses: recycling: mainly agriculture, with or without supplements but also for reinstating eroded sites (quarries, roadway excavations, replanting landfill sites), in forestry and urban landscaping applications.
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