A-14 無水小便器排水管内の尿由来生成物

概要

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The influence of flushing water on the precipitate formation from urine in drainpipes was investigated. In the case of using flush water, hydroxyapatite and amorphous calcium phosphates were precipitated as rigid scale on the surface of drainpipe. In contrast, in the case of waterless condition, struvite was precipitated in gel-like matrix composed of amorphous calcium phosphates and organic compounds, resulting from high concentration of urine and high pH. It is suggested that the waterless condition prevents the formation of rigid scale on the surface of the drainpipe.
社団法人空気調和・衛生工学会の論文
2010-08-12