下水汚泥のベルトプレス脱水における重力濾過ケーキの強度と脱水特性との関係

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概要

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• The relationship between strength of a gravitational filter cake and dewatering characteristics of a filter belt press was investigated for municipal sewage sludge. Two kinds of conditioning methods were used : (i) addition of a high-molecular weight cationic polyelectrolyte and (ii) addition of a low-molecular weight cationic polyelectrolyte and a high-molecular weight anionic polyelectrolyte in series.<BR>The following results were obtained : <BR>(1) To increase the strength of the gravitational filter cake and also to decrease the moisture content of the compressed cake, dosages of all polyelectrolytes had to be controlled at the break points for each polyelectrolyte.<BR>(2) The moisture content of compressed cake (<I>m</I>) decreased with increasing strength of the gravitational filter cake. The relationship between <I>m</I> and the strength varied with conditioning method. It also appeared that another, unknown, factor had a large effect on <I>m</I>.

• 社団法人 化学工学会の論文

著者

• 五十嵐 千秋

  (株) 荏原総合研究所

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• 下水汚泥のベルトプレス脱水における重力濾過ケーキの強度と脱水特性との関係

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