Results 131 to 140 of about 951 (173)

Effect of floc strength on sludge dewatering by vacuum filtration

Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2003
Abstract In this paper, the floc strength requirement of the alum sludge was experimentally investigated for its application on vacuum filtration. Floc strength analysis confirmed that the addition of polymer enforced the floc strength substantially, even in over-dosage, and, therefore, reduced the floc breakage of the alum sludge. The improvement in
Chih Chao Wu, Jerry J. Wu, Ruey Yi Huang
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Dewatering of dredged slurry by horizontal drain assisted with vacuum and flocculation

Geosynthetics International, 2022
This study proposes a new method using the combination of flocculation and prefabricated horizontal drain (PHD) assisted with vacuum pressure for rapid dewatering of high-water-content dredged slurry. First, to demonstrate the superiority of using PHD over the more commonly used prefabricated vertical drain (PVD), experiments were conducted to compare
H. Pu, D. Khoteja, Y. Zhou, Y. Pan
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Effects of Vacuum Filtration Parameters on Ultrafine Coal Dewatering

Coal Preparation, 2000
Abstract Coal fines (-0.6 mm) are often cleaned using wet separation processes such as froth flotation. Dewatering of clean coal slurry is essential for marketing the product and reducing the transportation cost. Vacuum filtration is one of the most widely used processes for fine coal dewatering.
D. TAO, J. G. GROPPO, B. K. PAREKHM
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Effect of vacuum degree and aeration rate on sludge dewatering behavior with the aeration-vacuum method

Journal of Zhejiang University-SCIENCE A, 2010
Due to large-scale dredging operations, a large amount of sludge is inevitably produced. Large areas of land are occupied when the dredged sludge is discarded in the disposal site as waste material. The sludge dewatering with aeration-vacuum (SDAV) method is suit for treating the sludge with high water content and high clay content in the disposal site.
Yu-feng Gao, Yuan Zhou
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Application of Enhanced Vacuum Filtration to Dewatering of Fine Coal Refuse

Separation Science and Technology, 1988
Abstract It is difficult to reduce the moisture content of fine coal refuse to a satisfactory level because of the high mineral content and the large capillary forces associated with small particle sizes. An experimental investigation of important operating variables on dewatering of fine coal refuse is reported.
Y. S. Cheng, S. R. Fang, J. W. Tierney, S. H. Chiang   +3 more
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Experimental Study on Dewatering Dredged Clay with Ventilating Vacuum Method

Advanced Materials Research, 2011
A series of model tests were performed on dredged clay with high initial water contents for investigating the dewatering behavior by ventilating vacuum method (VVM). The results shows that the surface water separated from dredged clay can be quickly removed by VVM in which a new pattern PVD is used. In addition, the method also speeds up the deposition
Feng Ji, Jian Wen Ding, Zhen Shun Hong, Yue Gui   +3 more
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Dewatering of Filter Cakes: Vacuum and Pressure Dewatering

1985
The primary aim of a dewatering filter is to reduce the liquid content of a slurry and to discharge solids which are as near to being dry as is practicably possible; so, in the sense of optimisation, the design of a dewatering filter should seek to minimize the moisture content of the discharged cake or to maximise the filtrate recovery rate.
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Dewatering of drinking water treatment sludge by vacuum electro-osmosis

Separation Science and Technology, 2016
ABSTRACTThe objective of this research was to evaluate the dewatering of drinking water treatment sludge (DWTS) by vacuum electro-osmosis dewatering (VEOD) technology. DWTS has a high moisture content, with the water existing as free water, pore water, surface adhesion water and internal combined water. Vacuum filtration of 0.05 MPa can quickly dewater
Kunlun Shen, Hang Xu, Mingmei Ding, Jianfeng Cui   +3 more
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Dewatering of Fine Particles by a Buchner Vacuum Filtre

2002
Bu çalışmada, ince boyutlu tanelerin oluşturduğu su-katı karışımı palp vakum altında susuzlandırma deneylerine tabi tutulmuştur. Deneylerde, taş kömürü, antrasit ve mineral konsantreleri (kuvars, talk, çinko ve bakır) kullanılmış ve deney parametrelerinin (basınç, susuzlandırma süresi, tane boyutu, kek kalınlığı, kül içeriği, palp sıcaklığı ve mineral ...
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Vacuum dewatering and residual saturation of incompressible filter cakes

International Journal of Mineral Processing, 1976
Abstract Fundamental data on the residual saturation of incompressible filter cakes which have been drained by vacuum have been measured. The effects of varying particle size, shape and distribution, type of wetting fluid and cake size have been assessed.
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