Causes of calcification of swimming pool sand tank filter Calcification of swimming pool sand tank filter is also called sand scale, which is colloid or saturated calcium carbonate attached to the surface of quartz sand grains, because calcium chlorate bleach is added to the swimming pool water, after reaction After the residue, can not be ruled out, the phenomenon formed by the supersaturated calcium carbonate attached to the surface of the sand, after the filter sand is formed into sand scale, for this reason, the particles of the quartz sand increase, and the specific gravity decreases, and the filter sand It is easy to flow out, which may cause cracking and clogging on the surface of the sand layer, resulting in the phenomenon of black spraying and parallel imports. One of the remedial methods for the above phenomenon is to implement recarbonization, that is, adding carbon dioxide, so that calcium carbonate is dissolved into hydrogen This calcification phenomenon is completely different from the nature of the accumulated fat, which is the opposite. Fat can be saponified with alkali or dissolved with a solvent, but calcification must be done with acid. Dissolution, in the process of using acid, if too strong acid is used, the structure of the filter will be damaged, and the filter material (quartz sand, etc.) will also be dissolved at the same time, so it is better to use acid such as carbon dioxide or organic acid to call weak acid here. Appropriate and appropriate. If there is always foam or a layer of grease on the surface of the pool, it means that there is too much grease accumulated in your circulation equipment and pipes, and you need to clean the pipes at this time.
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