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A. A layer formed on the surface of wastewater during sedimentation by floating greasymaterial is called |
Answer» Answer:The wastewater is HELD in a large sedimentation tank for several hours. This allows heavier solids to settle to the bottom and form a sludge LAYER. Lighter solids, FATS, oil, and grease float to the top, creating a scum layer. #PARI here... |
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