what is sludge? how is it disposed ????
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Introduction. Sludge deposits are the semisolid mixture and formed by the combination of liquid (e.g., oil and water), hydrocarbon (e.g., grease and lubricant), and nonhydrocarbon or inorganic compounds of solids [1. D. W. Jennings and A.
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★The residue that accumulates in sewage treatment plants is called sludge.
★Treatment and disposal of sewage sludge are major factors in the design and operation of all wastewater treatment plants. Two basic goals of treating sludge before final disposal are to reduce its volume and to stabilize the organic materials. Stabilized sludge does not have an offensive odour and can be handled without causing a nuisance or health hazard. Smaller sludge volume reduces the costs of pumping and storage.
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