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The very feature that distinguished the plate filter, i.e. the formation of a cake on the upper surface of the element only, makes this type that much more difficult to…

The leaves in a pressure leaf filter hang, or are held, vertically and, while this permits filtration on both sides of the leaf, it also means that the accumulating cake…

The leaf filter incorporates an array of flat filter elements, with filter media on both sides of the element, each one parallel to its neighbours and hanging, equally spaced, from…

The last few parts of this Section (3J to 3M) have been concerned almost entirely with the clarification of a flow of fluid, usually to remove contaminants from it, and…

A small but important group of what are, in effect, single cartridge filters are operated in such a way that they can be continuously cleaned by an automatically functioning mechanism.…

The most common form of cleaning is to reverse the flow of fluid through the filter medium, and so to blow the surface clear of collected contaminants. As this requires…

Most filter elements, including all of those described in Sections 3K and 3L, are intended to be cleaned free of accumulated contaminants, wherever this is pos sible, simply from the…

A constructed cartridge somewhat different from those just described is the lenticular disc filter – the prime difference being that the components of a complete element are capable of undertaking…

The final group of surface filtering cartridges is made up of individual compon ents that, by themselves, could not act as a filter medium, but when assembled into a generally…

A foam is created when a mass of gas bubbles is evenly distributed throughout a quantity of liquid, in such a way that the gas occupies almost all of the…