Multi-layer Filter For Oil Water Separate
2020-05-14 16:51The Multi-layer Filter For Oil Water Separate(OWS) contains a coalescing medium or media. This media provides a suitable surface for oil droplets to meet and grow, or coalesce, into larger droplets. As oil droplets grow in size the buoyancy of the droplets increase. The droplets rise towards the surface of the water due to the fact that the specific gravity of oil is less than the specific gravity of water. In this way the oil will form a layer that can be separated from the water by skimming action before the water is reused or discharged. Any heavy solids present in the water being treated, or sludge, in theory should fall into the sludge compartment of the OWS unit. As oil droplets coalesce into to larger droplets, the buoyancy of the droplets increases. This is reflected in the known rise time for a given size of oil droplet. The more efficient the coalescence action of the media, the larger the oil droplets become.
Traditional coalescing media have been variations of corrugated, inclined plates. By definition half of the surface of this type of media must always be aligned upward – which is the wrong direction for support of coalescing action. To attempt, in part to overcome this problem by adding more specific surface, plate separation can be made more narrow. This solution only solves the problem partially as the ratio of incorrect to correctly oriented surface remains 50/50. But as the spacing of the plates narrows, plugging of the coalescing media – and hence the failure of the OWS unit – becomes more likely.
One advantage of using polypropylene is that the OWS can operate with a water temperature to 200 degrees F (93 degrees C) vs. the cheaper corrugated medias which are made from PVC and begin to weaken at 120 degrees F (49 degrees C).
With all rounded elements, the entire surface area of 132 ft2/ft3 (433m2/m3) of HD Q-PAC is available to support oil droplet coalescence. As a result, there is no need for any type of 2nd stage polishing to achieve needed oil removal.
Technical Data For Multi-layer Filter For Oil Water Separate:
Size mm | Surface Area ft2/ft3 | Drip Points | Bulk Density kg/m3 | Smallest Grid Opening | Void Ratio % |
305*305*305 | 132 | 75000/ft3 | 7.5 lb/ft3 | 0.16''*0.16'' | 87.8% |
40*40*40 | 612m2/m3 | No Data | 170 kg/m3 | 0.07''*0.07'' | No Data |
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