The hydrocyclone is equipment for solid-liquid mixture separation.
It can be used to both separate and concentrate dredged material. When a Trailer Suction Hopper Dredge (THSD) dredges material consisting of fine particles, the material can’t settle quickly in the hopper leading to an overflow-loading dredging method with low efficiency.
Through an experiment in the Yangtze River Estuary this study analyses the concentration efficiency of three types of hydrocyclone. The 500-H hydrocyclone separation efficiency reaches above 80%, with a concentration ratio above 2.
The feasibility of engineering application using hydrcyclones is discussed and results predicted.
By using theoretical calculations under the same working conditions, both the loading rates and measured hopper volumes improved significantly. As an example the technology described was applied on work at the Huanghua Port and in theYangtze River Estuary with the prospect of it being more widely applied.
Dredging Today Staff, June 6, 2013