Reform and Test of PTA Wastewater Sludge Concentration Process
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To solve the problems of pool capacity and low efficiency in concentrating sludge of PTA wastewater in flat streaming gravity process of Yangzi water plant,gravity concentration was reformed into cavitations-air flotation.Compared with the traditional process,the new one provides a 10 times capacity of sludge concentration with a 5% lower water content in settled sludge.Suspending particles in upper layer water decreased by nearly 20 times.The relevancies between different operating factors developed in this paper can be applied as bases to design practical operation.