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JPH11700A Expired / Lapsed JP ⏱️ 0.0 years remaining

Sludge dewatering method

Assignee: Kurita Water Industries Ltd
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Filing: 1997-06-09
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Granted: —
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Expires: 2017-06-09
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Abstract

Abstract Translated from Japanese (57)【要約】 【課題】合成カチオン性高分子凝集剤とキトサンとを添 加して第1の撹拌を行い、次いでアニオン性高分子凝集 剤を添加して第2の撹拌を行い、生成したフロックを脱 水する汚泥の脱水方法において、薬剤の添加量が少な く、フロックの脱水性が良好で、汚泥の処理量が多く、 かつ含水率が低い脱水ケーキが得られる汚泥の脱水方法 を提供する。 【解決手段】有機性汚泥に、合成カチオン性高分子凝集 剤とキトサンとを添加して第1の撹拌を行い、次いでア ニオン性高分子凝集剤を添加して第2の撹拌を行い、生 成したフロックを脱水する汚泥の脱水方法において、合 成高分子カチオン性凝集剤が一般式[1]で表されるア ミジン単位又は一般式[2]で表されるアミン単位を有 するものであることを特徴とする汚泥の脱水方法。ただ し、式中、R 1 、R 2 及びR 3 は水素又はメチル基であ り、X - 及びY - は塩形成アニオン基である。 【化1】 (57) [Summary] A synthetic cationic polymer flocculant and chitosan are added to perform a first stirring, and then an anionic polymer flocculant is added and a second stirring is performed. In the method of dewatering sludge for dewatering floc, the amount of chemical added is small, the dewatering property of floc is good, and the sludge treatment amount is large, Provided is a sludge dewatering method capable of obtaining a dewatered cake having a low water content. Kind Code: A1 A synthetic cationic polymer flocculant and chitosan are added to organic sludge and a first stirring is performed, and then an anionic polymer flocculant is added and a second stirring is performed. In the method for dewatering sludge for dewatering floc, the synthetic polymer cationic flocculant has an amidine unit represented by the general formula [1] or an amine unit represented by the general formula [2]. Sludge dewatering method. However, in the formula, R 1 , R 2 and R 3 are hydrogen or a methyl group, and X − and Y − are salt-forming anion groups. Embedded image

Inventors

  • 👤 Shoji Matsushima
  • 👤 尚司 松島
  • 👤 Minoru Watanabe
  • 👤 実 渡辺
  • 👤 Yutaka Yamamoto
  • 👤 豊 山本
  • 👤 Takayuki Mizunari
  • 👤 隆之 水成

Bibliographic Details

Application Number —
Jurisdiction JP
Data Source google_patents
Last Synchronized 2026-10-31 00:51
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