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What is the difference between biosolids and sludge?

April 26, 2017biosolids sludge

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What is the difference between biosolids and sludge?

4 Answers

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Biosolids are treated sewage sludge. Sludge is typically 3% solids (97% liquids) whereas biosolids are typically 15-90% solids. Because of the treatment and production process, pathogen levels Biosolids are much lower than in sludge.

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The term sludge can be applied to many materials. Generally, any solids that have settled out of a mostly-liquid substance might be thought of as sludge. Biosolids are produced by treating sewage sludge to meet standards that allow it to be applied to the land for beneficial use. Biosolids are treated and strictly monitored; they must be used in accordance with regulatory requirements. By definition, sludge is a solid waste, but biosolids are not a solid waste and are considered a valuable commodity.

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Biosolids are produced from sewage sludge. Biosolids are carefully treated and monitored and must be used in accordance with regulatory requirements.

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Biosolids are treated sewage sludge. Biosolids are carefully treated and monitored and must be used in accordance with regulatory requirements.