Development of High-Speed and High-Level Reduction Process of Difficult-to-Dewatering Sludge by Combined Reversible Flocculation and Multistage Ultrahigh-Pressure Expression System

可逆絮凝与多级超高压表达系统相结合的难脱水污泥高速高水平还原工艺开发

• 批准号: 22656175
• 负责人: IRITANI Eiji
• 金额: $ 2.3万
• 依托单位: Nagoya University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Challenging Exploratory Research
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22656175/
• 关键词: 可逆凝集; 超高圧圧搾; 廃棄物; 汚泥; 減量化; pH; 電解質; 脱水

High rate reduction in volume of difficult-to-dewatering sludge was achieved by step-up ultrahigh-pressure expression combined with reversible flocculation. Flocculation with inorganic electrolyte with multivalent cation such as poly aluminum chloride was extremely effective for the increase in the dewatering rate of excess activated sludge, and the water content of the compressed cake was finally reduced to 31wt% by expression under action of ultrahigh-pressure of 15 MPa combined with reversible flocculation. This new method shortened the total dewatering time of activated sludge by 51. 6% compared to the conventional method, and reduced the sludge volume by 99. 83%. The results derived from a series of experiments attained the research goals from the viewpoint of both the rate in dewatering and the water content of the compressed cake.

采用升压超高压压榨与可逆絮凝相结合的方法，实现了难脱水污泥体积的快速减少。采用聚合氯化铝等多价阳离子无机电解质进行絮凝，对提高剩余活性污泥的脱水率极为有效，在15 MPa超高压作用下压榨，结合可逆絮凝，最终将压缩饼的含水率降至31wt%。该方法使活性污泥脱水时间缩短了51.与传统方法相比减少了6%，污泥量减少了99。百分之八十三通过一系列的试验，从脱水率和滤饼含水率两个方面都达到了研究目的。

项目成果

Accurate Determination of Cake Compressibility Based on Single Step-up Pressure Ultrafiltration Test

基于单级升压超滤试验的滤饼压缩率的准确测定

• 发表时间: 2011
• 作者: E. Iritani;M. Tukamoto;S. Kanetake and N. Katagiri
• 通讯作者: S. Kanetake and N. Katagiri

ステップ超高圧圧搾による余剰汚泥の高速減量化プロセスの開発

开发剩余污泥分级超高压压缩高速减量工艺

• 发表时间: 2011
• 作者: H. Uchida;J. Sakabe;K. Demoto;R. Nakazawa;D. Kondo;A. Kataoka;T. Kokubun;M. Ito;N. Sugimoto;入谷英司
• 通讯作者: 入谷英司

ケーク堆積のモデル化に基づく膜面傾斜限外濾過のフラックス促進効果の解析

基于滤饼沉积模型的倾斜膜超滤通量提升效果分析

• 发表时间: 2011
• 作者: T. Funazukuri;R. Katouoka;K. Yui;C. Y. Kong;X.Meng;入谷英司
• 通讯作者: 入谷英司

粒子・液体系分離プロセスの高度化・体系化に関する研究

颗粒/液体分离过程的复杂化和系统化研究

• 发表时间: 2011
• 作者: 劔持卓;内田博久;入谷英司
• 通讯作者: 入谷英司

Effect of pH on Fermentation and Microfiltration Characteristics of D-Lactic Acid Producing Bacterium

pH值对D-乳酸生产菌发酵和微滤特性的影响

• 发表时间: 2011
• 作者: Iritani;Eiji
• 通讯作者: Eiji