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Municipal Wastewater Treatment: Advanced Technologies in Wastewater Treatment

Edited by Angelo Basile, Edited by Alfredo Cassano, Edited by Kamran Ghasemzadeh

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Municipal Wastewater Treatment: Advanced Technologies in Wastewater Treatment provides updated information on existing technologies for municipal wastewater treatment. The book focuses on efficient technologies and environmental control strategies in the field of municipal wastewater and covers below listed strategies that can be used in municipal wastewater treatment, depending on the specific needs and goals of the treatment plant: (a) Preliminary treatment: This involves screening out large objects like sticks, rocks, and plastics, and removing grit and sand that can damage pumps and other equipment. (b) Primary treatment: In this stage, wastewater is settled in large tanks, allowing solids to stele to the bottom and oils and greases to rise to the surface, where they can be skimmed off. (c) Secondary treatment: This stage uses biological processes to further treat the wastewater. One common method is the activated sludge process, which involves aerating the wastewater and adding microorganism that consumes organic matter. Another method is the trickling filter process, which uses a bed of rocks of other materials to support microorganisms that break down organic matter. (d) Tertiary treatment: This is an optional stage that can be used to further remove nutrients, pathogens, and other pollutants from the wastewater. Common methods include sand filtration, membrane filtration, and disinfection with chemicals like chlorine or ultraviolet light. (e) Sludge treatment and disposal: The solids that are removed during primary and secondary treatment, known as sludge, must be further treated before they can be safely disposed of or used. Common methods include anaerobic digestion, composting, and drying. Municipal Wastewater Treatment sheds light and gives a broad but very detailed view on above mentioned issues from an industrial chemical engineering point of view.

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