SLUDGE DEWATERING METHOD

To provide a sludge dewatering method using an indirect heating dehydrator, possible to effectively reduce a water content of a dehydrated cake, thereby solving a problem of sludge leaking from the dehydrator.SOLUTION: There is provided a sludge dewatering method, including: mixing sludge with a pol...

Full description

Saved in:
Bibliographic Details
Main Authors TSUKII RIYOUJI, KITAZAWA TAKUYA, HAGINO TAKAO, YASUNAGA TOSHIYUKI
Format Patent
LanguageEnglish
Japanese
Published 21.05.2020
Subjects
CHEMISTRY
METALLURGY
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Online AccessGet full text

Cover

More Information
Summary:To provide a sludge dewatering method using an indirect heating dehydrator, possible to effectively reduce a water content of a dehydrated cake, thereby solving a problem of sludge leaking from the dehydrator.SOLUTION: There is provided a sludge dewatering method, including: mixing sludge with a polymer flocculant to coagulate; then, concentrating the sludge that has coagulated; adding an organic coagulant to the sludge after concentration; and carrying out mechanical dewatering while heating the sludge added with the organic coagulant by indirect heating method.SELECTED DRAWING: Figure 1 【課題】間接加熱方式による脱水機を用いた汚泥の脱水方法において、脱水ケーキの含水率を効果的に低減でき、それにより脱水機から汚泥が漏れたりする問題が解消され得る方法の提供。【解決手段】汚泥を高分子凝集剤と混合して凝集させた後、凝集させた汚泥を濃縮し、濃縮後の汚泥に有機凝結剤を添加し、有機凝結剤が添加された汚泥を間接加熱方式で加熱しながら機械脱水することを特徴とする汚泥の脱水方法。【選択図】図１
Bibliography:Application Number: JP20180210264