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The impact of ozonation on physicochemical properties of sewage sludge and the relationships between the physicochemical properties and dewaterability during ozonation were investigated. CST was used to evaluate sludge dewaterability. The results showed that the settleability of sludge was improved after ozonation. The relative hydrophobicity (RH) of sludge flocs decreased from 69.2±4.0% to 50.0±2...
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