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http://dx.doi.org/10.11001/jksww.2018.32.2.089

Improvement of dewaterability and settleability of sewage sludge using coagulation sludge  

So, Soo-Hyun (Center for Water Resource Cycle, Korea Institute of Science and Technology)
Lee, Byung-Ha (KG Chemical Co. Ltd.)
Park, Joon-Hong (School of Civil and Environmental Engineering, Yonsei University)
Cha, Ho-Young (Zignentech Co. Ltd.)
Kim, Han-Soo (School of Environmental Engineering, University of Seoul)
Song, Kyung-Guen (Center for Water Resource Cycle, Korea Institute of Science and Technology)
Publication Information
Journal of Korean Society of Water and Wastewater / v.32, no.2, 2018 , pp. 89-96 More about this Journal
Abstract
This study aimed to investigate the feasibility of improving dewaterability and settleability of sewage sludge using coagulation sludge. When mixed with sewage sludge and coagulation sludge at 1:1 ratio, capillary suction time(CST) and specific resistance to filtration(SRF) decreased by about 56% and 68%, respectively. It is found that total solids(TS) and volatile solids(VS) of mixing sludge are increased by about 59% and 53%, respectively. Also, the turbidity of the mixing sludge supernatant was reduced from 99 to 16 NTU. It is observed that the mixing of sewage sludge and coagulation sludge at 1:1 showed better effect than using poly-aluminum chloride(PAC) coagulant at 25 mg/L.
Keywords
Coagulation sludge; Conditioning; Dewaterability; Settleability; Sewage sludge;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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