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Establishment of Zero-emission Processing
Technology for Organic Sludge by Multistage Distillation
−Chemical Analysis of Sewage Sludge−
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Yukiyo FUJISHIMA, Kaduiti KITAGAWA, Shizuo NAKAMURA and Ryouichi
KIZU |
In order to establish a zero-emission processing technology for sewage sludge
by combining melting treatment and high-temperature dust-collecting technology,
it is necessary to obtain guideline data for setting the operating conditions
of the plant and basic data for calculating material balance in the melting
furnace and dust-collecting equipment. In this study, we analyzed the basic
physical properties and components of sewage sludge (dehydration cake) collected
from 11 sewage works in Ishikawa Prefecture. In the solid component of the
sewage sludge, the ratio of organic matter was as high as 70 to 80% and
the ratio of inorganic matter containing six elements such as Si, P, Ca,
Al, Fe and S was about 10%. The heating values and components of the sewage
sludge samples showed neither regional nor seasonal variation.
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Keywords ■■■ |
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sewage sludge, chemical analysis,
components |
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