Sand filter for water
DynaSand
Nordic Water Products
The function of the DynaSand is very simple: the feed is introduced in the lower end of a media bed and filtration takes place upwards. The lower end of the media bed separates the dirt particles, and is selectively and continuously removed from the bed by an air-lift pump for transportation to a media-washer placed above the media bed. The media particles are given a good scrubbing in the air-lift followed by a thorough rinse in counter-current to a small portion of the filtrate. Finally the cleaned media exits the washer and is returned to the clean end of the media bed. The filtration never has to be interrupted for backwashing and a number of other advantages result from the DynaSand principle.
The DynaSand is supplied either as free-standing filters in stainless steel or FRP, or as modules for installation in concrete tanks. The modular construction makes it possible to build filter plants in different sizes and to make accurate predictions from pilot-plant tests.
The DynaSand by Nordic Water is sold in the Western Hemisphere under the trade mark SuperSand. (The trade mark DynaSand is being used in the Western Hemisphere by another company).
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