Affiliation:
1. School of Civil Engineering and Architecture, Anhui University of Science & Technology, Huainan 232001, China
2. School of Earth and Environment, Anhui University of Science & Technology, Huainan 232001, China
Abstract
Dredged sediment has high water content, and its engineering characteristics are poor; therefore, the treatment and disposal of dredged sediment is difficult, and the utilization efficiency of these resources is low. Various methods can be used to dehydrate dredged sediment, among which flocculation dewatering is the most widely used. In this study, the basic properties of dredged sediment were examined, and the flocculation dehydration effect of dredged sediment was analyzed in relation to the polyaluminum ferric chloride (PAFC) dosage, water content, and time. There is an optimal flocculant dosage added during dredged sediment processing. Dredged sediment with high water content has obvious flocculation effect. Flocculant can speed up the flocculation dehydration of dredged sediment in a short time, but long-term dehydration has no advantages compared with natural dredged sediment; the dehydration effect was even weaker than that of natural dredged sediment dehydration in the later stages of sedimentation. Meanwhile, this paper divided the settling process into different stages; the settlement coefficients and compaction settlement indexes in different settling stages can well reflect the flocculating performance of flocculants at each settling stage.
Funder
Scientific Research Foundation for High-level Talents of Anhui University of Science and Technology
Subject
Water Science and Technology,Aquatic Science,Geography, Planning and Development,Biochemistry
Reference33 articles.
1. Wang, S., He, X., Gong, S., Cai, G., Lang, L., Ma, H., Niu, Z., and Zhou, F. (2022). Influence Mechanism of Fulvic Acid on the Strength of Cement-Solidified Dredged Sludge. Water, 14.
2. Performance and mechanisms of dredged sludge dewaterability enhancement with slag-based polymeric titanium aluminum coagulant;Li;Colloids Surf. A,2021
3. Effect of Curing Stress on Compression Behaviorof Cement-Treated Dredged Sediment;He;Int. J. Geomech.,2020
4. Study on mechanical properties of dredged silt stabilized with cement and reinforced with alginate fibers;Hu;Case Stud. Constr. Mat.,2023
5. Vacuum preloading and electro-osmosis consolidation of dredged slurry pre-treated with flocculants;Wang;Eng. Geol.,2018
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献