Results 171 to 180 of about 10,575 (222)
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Specific energy consumption of cake dewatering with vacuum filters
Minerals Engineering, 2017The energy consumption of vacuum filtration operations in cake filtration depends on the properties of the cake, the filtration conditions applied, and the progress of the cake dewatering process. Operating a vacuum filter at a high pressure difference requires a high air flow rate and thus has high energy consumption.
Huttunen, Manu +6 more
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Vacuum Dewatering During Paper Manufacturing
Drying Technology, 2003Water removal during paper making is one of the most energy-intensive and capital-intensive processes.
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Effects of Vacuum Filtration Parameters on Ultrafine Coal Dewatering
Coal Preparation, 2000Abstract 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 floc strength on sludge dewatering by vacuum filtration
Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2003Abstract 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 drinking water treatment sludge by vacuum electro-osmosis
Separation Science and Technology, 2016ABSTRACTThe 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 +3 more
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Experimental Study on Dewatering Dredged Clay with Ventilating Vacuum Method
Advanced Materials Research, 2011A 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 +3 more
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Precoat Vacuum Filtration and Natural‐Freeze Dewatering of Alum Sludge
Journal AWWA, 1972Some treatment plants can lagoon their sludge; others may dump it into nearby water “repositories.” The Albany, N. Y., facility hasn't the land area for the former and has been enjoined from the latter. Solution to its problem boiled down to two possibilities: dewater by rotary‐vacuum precoat filtration or natural freezing.
Patrick F. Mahoney, Willard J. Duensing
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Dewatering of Filter Cakes: Vacuum and Pressure Dewatering
1985The 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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Vacuum dewatering and residual saturation of incompressible filter cakes
International Journal of Mineral Processing, 1976Abstract 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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Application of Enhanced Vacuum Filtration to Dewatering of Fine Coal Refuse
Separation Science and Technology, 1988Abstract 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 +3 more
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