Experiment Study on the Flocculent Deposition of Dredged Sediment in Tongji Bridge Reservoir

DOI

10.2991/icache-15.2015.50How to use a DOI?

Keywords

Dredged sediment; Flocculants; Settling; Supernatant liquor; Dewatering

Abstract

This test explored suitable flocculating settling technological parameter for dredged sediment in Tongji Bridge Reservoir. It referred to sewage treatment plant’s sludge treatment methods, and used PAM, PAC, FeCl3, MgCl2, Na2CO3, Ca(OH)2 and KMnO4 as flocculants to improve water quality. Through single and mixed experiments, this paper studied flocculants’ influence on sludge setting rate and supernatant liquor. The result shows that anionic PAM’s setting rate is faster than other flocculants, but its supernatant turbidity is high. The effect of FeCl3, PAC, KMnO4 is poorer than PAM, however they have better water purification effect. In view of sedimentation, argillaceous improvement and clarification, this paper chooses three groups of flocculants, which are group two PAM+PAC+MgCl2, group three PAM+PAC+Ca(OH)2, and group four PAM+PAC+Na2CO3+Ca(OH)2. Therefore, this paper can provide a simple and feasible way for the rapid dewatering of dredged sediment which is convenient for sediment’s disposal and resource utilization.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Yannan Shi
AU  - Chaojie Zhang
AU  - Taoxiao Chen
AU  - Jiongqi Yu
PY  - 2015/11
DA  - 2015/11
TI  - Experiment Study on the Flocculent Deposition of Dredged Sediment in Tongji Bridge Reservoir
BT  - Proceedings of the 2015 International Conference on Architectural, Civil and Hydraulics Engineering
PB  - Atlantis Press
SP  - 254
EP  - 259
SN  - 2352-5401
UR  - https://doi.org/10.2991/icache-15.2015.50
DO  - 10.2991/icache-15.2015.50
ID  - Shi2015/11
ER  -