Browse > Article

The Sludge Conditioning and Dewatering Properties of Waste Sludge with Metal Salt  

Lee, Chang-Han (Department of Environmental Engineering, Catholic University of Pusan)
Publication Information
Abstract
Sludge conditioning is widely used to improve aggregation and dewaterability of waste sludge in sludge treatment processes. The study aims to examine quantitative correlations between coagulant dosage and sludge cake dewaterability using three kinds of coagulants, such as an aluminum sulfate, a ferric chloride, and a poly aluminum chloride(PAC). When an aluminum sulfate, a ferric chloride, and a PAC were injected with 0.79$\sim$1.19 mmol/g, 0.61$\sim$1.25 mmol/g TSS, and 0.21$\sim$0.39 mmol/g TSS, respectively, specific resistances to filtration of the sludge were decreased at 95.0% or more. This study shows that the correlation between coagulant dosage per g sludge(D) and normalized specific resistance to filtration(R) could be expressed by the exponential functions.
Keywords
Waste Sludge; Coagulant; Conditioning; Dewatering;
Citations & Related Records
연도 인용수 순위
  • Reference