Improvement of dewaterability and settleability of sewage sludge using coagulation sludge

Title
Improvement of dewaterability and settleability of sewage sludge using coagulation sludge
Authors
송경근소수현이병하박준홍차호영김한수
Keywords
Coagulation sludge; Conditioning; Dewaterability; Settleability; Sewage sludge
Issue Date
2018-04
Publisher
상하수도학회지
Citation
VOL 32, NO 2-96
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.
URI
http://pubs.kist.re.kr/handle/201004/67759
ISSN
1225-7672
Appears in Collections:
KIST Publication > Article
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