A method and apparatus are disclosed for the separation of very fine and coarse particles, especially coal and minerals, so as to produce high purity and high recovery efficiency. This is accomplished through the use of a column, microbubbles, recycling of the pulp, and countercurrent wash water to gently wash the froth.
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Results of tests conducted on the attrition-ground Pittsburgh No. 8 seam coal as a function of frother {Dowfroth MlSO addition in the first stage •••••••• Results of tests conducted on the Harlan seam coal -400 mesh as a function of frother
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Separation performance of mechanical and cyclonic column FCMC was compared in terms of the beneficiation of high-ash coal fines that has the characteristics ...
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The improved generation system is then introduced to the advanced water treatment processes and examined for the effectiveness. The applications to advanced water treatment studied in the present research include air and ozone oxidation. Air is widely used as an alternative to sedimentation in the field of water
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The present invention relates to a pressure-reducing nozzle for generating microbubbles in a . Water treatment plants are known comprising a into which raw water is admitted, previously flocculated then mixed with pressurized water and reduced in pressure so that the suspended solids contained in the raw water are entrained by the microbubbles resulting from this ...
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A column includes a fluid vessel, an exteriorly mounted generator, conduits for conducting a pressurized mixture of bubbles and liquid from the generator to the vessel, features for inhibiting the coalescence and enlargement of the bubbles prior to their introduction into the vessel, and an arrangement for introducing the bubble/liquid mixture into the vessel and for ...
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Assessment of algae removal efficiency was shown by the number of the , total organic carbon TOC, dissolved organic carbon DOC, and the morphological changes i.e., shape or size distribution. In terms of the number of , filamentous algae showed the greatest removal, i.e., 86% removal at 30% recycling ratio and 5 mg/L of Al 3 ...
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· For this reason, Yoon and Luttrell [7] derived a stream function applicable to flotation size bubbles as follows: Microbubble flotation 621 el=u:R~il~l[lx2-3-x+l Re721/2 +x 1/] 4 Tx 15 - j L2 7 in which xb is the stream function, 0 and x are the angular and radial coordinates, respectively Rn is the bubble radius and un is the velocity of bubble.
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To evaluate the effect of microbubbles on bunker oil flotation, the flotation experiments were carried out in a laboratory-scale flotation cell 7" diameter, 10.5" height via a closed loop system as shown in Fig. 2. The water flow rate entering the venturi ranges from 2-6 …
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· Cultured cells separated into foam in 20 min without coagulants and pH control. • generator disrupts the diatom cell wall during flot • High TAG levels were observed in the foam cells in the stationary phase. • The culture time of microalgae affects thickening of the dispersed air flotation.
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Induced air IAF was developed using a rotating-flow generator for water treatment. This newly-developed generator can produce fine microbubbles with diameters on the order of micrometers, whereas it has to use a large quantity of water as propulsion, especially when surfactant-free water is used.
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A method and apparatus for separating two fluids, one lighter in specific gravity than the other, including the steps of providing a single vessel, having a primary separation chamber and a gas chamber separating fluids in the primary separation chamber to allow for free and suspended solids along with free oil and grease and gas to be removed from the fluids in the primary ...
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A method and apparatus for two fluids, one lighter in specific gravity than the other, including the steps of providing a vessel, having a primary separation chamber and a gas...
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The charged froth is injected into the influent stream and has an electrostatic affinity to grab and lift solids to the vessel surface for skimming and removal. New SAF® systems are a fraction of the size of conventional DAF units, saving floor space and capital costs.
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