Laboratory Study of Flocculation and Pressure Filtration Dewatering of Waste Slurry
Joint Authors
Wang, Yucheng
Min, Fanlu
Wang, Dengfeng
Du, Jiarui
Song, Hangbiao
Lv, Huanjie
Ma, Jiawei
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-09-30
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
In the process of large-scale urban construction, large amounts of waste slurry are produced.
The slurry has a high water content and is difficult to precipitate naturally, resulting in low treatment efficiency.
To improve the treatment efficiency of slurry, a variety of inorganic and organic polymer flocculants were used to carry out flocculation settlement tests on the slurry.
The changes in the slurry properties and the filtration dewatering effect after flocculation were tested.
The results show that the addition of flocculant makes the slurry particles form aggregates, which leads to rapid precipitation of the slurry.
The use of an inorganic flocculant significantly reduced the zeta potential of the slurry.
Organic polymer flocculant, however, had little effect on the slurry potential, but did cause the slurry to produce larger size aggregates, resulting in a better flocculation effect than inorganic flocculant.
Inorganic flocculants and organic flocculants can improve the pressure filtration dewatering performance of slurry.
CPAM12 (cationic polyacrylamide, with a relative molecular weight of 12 million Daltons) had the best overall effect.
The formation of aggregates after flocculation and the change in the nonuniformity coefficient (Cu) were the main cause of improvement of pressure filtration dewatering performance of the slurry.
When Cu decreases from 11.85 to 8.75, the time required for pressure filtration stabilization is shortened by 70%.
The nonuniformity coefficient of flocculated slurry can be used to evaluate flocculants, determine the optimal dosage, and predict the dewatering effect.
American Psychological Association (APA)
Min, Fanlu& Wang, Dengfeng& Du, Jiarui& Song, Hangbiao& Wang, Yucheng& Lv, Huanjie…[et al.]. 2020. Laboratory Study of Flocculation and Pressure Filtration Dewatering of Waste Slurry. Advances in Civil Engineering،Vol. 2020, no. 2020, pp.1-11.
https://search.emarefa.net/detail/BIM-1121124
Modern Language Association (MLA)
Min, Fanlu…[et al.]. Laboratory Study of Flocculation and Pressure Filtration Dewatering of Waste Slurry. Advances in Civil Engineering No. 2020 (2020), pp.1-11.
https://search.emarefa.net/detail/BIM-1121124
American Medical Association (AMA)
Min, Fanlu& Wang, Dengfeng& Du, Jiarui& Song, Hangbiao& Wang, Yucheng& Lv, Huanjie…[et al.]. Laboratory Study of Flocculation and Pressure Filtration Dewatering of Waste Slurry. Advances in Civil Engineering. 2020. Vol. 2020, no. 2020, pp.1-11.
https://search.emarefa.net/detail/BIM-1121124
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1121124