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Sewage treatment, also known as wastewater treatment, aims to remove contaminants from sewage. This produces an effluent that can be discharged into the environment or reused. The activated sludge process for removing carbonaceous pollution begins with an aeration tank where air (or oxygen) is injected into the waste water. This is followed by a settling tank to allow the biological flocs (the sludge blanket) to settle, thus separating the biological sludge from the clear treated water.
Topics include: Types of Sewage Filter, Conventional Trickling Filter, High Rate Trickling Filter and Secondary Clarifie, Diffused Air System, Mechanical Aeration System , Treatment of Sludge, Digestion of Sludge, Sludge Digestion Tank, Design of Activated Sludge Plant, & Sludge Thickening, Sludge Dewatering.
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