Continuous percolating

Continuous Percolators Coarse sohds are also leached by percolation in moving-bed equipment, including single-deck and nmlti-deck rake classifiers, bucket-elevator contactors, and horizontal-belt conveyors. 

Biodegradation unacclimated aerobic aqueous biodegradation t,/2 = 48-192 h, based on a soil column study in which aerobic groundwater was continuously percolated through quartz sand (Kappeler Wuhrmann 1978 Howard et al. 1991) t,/2(aq. anaerobic) = 192-768 h, based on unacclimated aqueous aerobic biodegradation half-life (Howard et al. 1991). 

Columns with volume of 125 m3 were filled with different materials and the same water as described above was continuously percolated through the material. The flow rate was about 2-3 mL/min. Inlet and outlet water was sampled and analyzed for arsenic species daily. 

Thermofor continuous percolation a continuous clay treating process to stabilize and decolorize lubricants or waxes. 

In order to form a conductive pattern from nanoparticle inks, the potentially conductive particles must be consolidated to create a continuous percolated path for the conduction of electric current. 

Lodding (Llo) described an apparatus that may find applications in continuous percolation leaching. The dewatered feed material, together with the solvent, is fed into a large insulated silo which has provisions for the continuous withdrawal of the leached material at the bottom. A w ater spray pointing at an angle of 45 is used to activate the smooth and imiform withdrawal of material, containing as much as 70% solid for a sand-size material. 

Soil columns were continuously percolated with aqueous solutions... 

In a continuous percolation system, the raw liquid is passed through a bed of carbon of sufficient depth to provide a finished liquid of the desired purity.6,9,13 The flow will range from 1 to 3 GPM per square foot of the cross section of the bed area the depth... 

Similar observations could be made of the other properties listed in Table 7 3. In some situations, specific circumstances make it practical to predetermine whether batch-contact or continuous percolation in columns will be employed otherwise both granular and powdered carbons should be included in the preliminary survey. 

This function is completely different, however, if the particles aggregate or even form a continuous ( percolating ) network with the result that the system displays a limited degree of direct-current conductivity. The frequency dependence of conductivity then disappears completely and displays now a metallic function with... 

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