Laboratory Test Study on Rapid Chemical Deposition of Fresh Dredger Fill

Ai Rong Zheng; Ai Jun Zhuge

doi:10.4028/www.scientific.net/AMR.803.118

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 803Laboratory Test Study on Rapid Chemical Deposition...

Laboratory Test Study on Rapid Chemical Deposition of Fresh Dredger Fill

Abstract:

After hydraulic reclamation of the dredger fill, as the deposition of surface sludge requires a relatively long time, the consolidation treatment cannot be immediately performed until the sludge-water separation is completed and the separated water is drained. The laboratory test makes a research on the effects of chemical agents and drainage condition on the sludge deposition process. The research shows that the early-stage deposition velocity of sludge is increased obviously and the sludge-water separation time is shortened after water hydrophobing agents and polymeric flocculants are added. However, the later-stage deposition velocity is slow and the deposition strength is low. Thus, certain drainage conditions are required to increase the later-stage deposition velocity and deposition strength of sludge.

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Periodical:

Advanced Materials Research (Volume 803)

Pages:

118-121

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.803.118

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Online since:

September 2013

Authors:

Ai Rong Zheng, Ai Jun Zhuge

Keywords:

Chemical Method, Deposition, Dredger Fill, Flocculent Agent

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