Substituting material like geotextile tube for traditional sediment yard to accommodate sediment is a new technology in Environmental Dredging project. This paper has conducted some related research about the technology. Two important parameters of flocculant species and dosage are determined by flocculation test in laboratory, Throughing different combined technology of geotextile tube, we identify its optimal parameters, which is beneficial for practical application of combination technics of geotextile tube in mud dewatering for environmental dredging project.
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