FLOCCULANT AND METHOD FOR PRODUCING THE SAME, AND TREATMENT METHOD

• Main Author: HONDA KEISUKE
• Format: Patent
• Language: English; Japanese
• Published: 22.09.2023
• Subjects: CHEMISTRY; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

To provide a flocculant which is excellent in flocculation performance even if a polyacrylamide-based polymer flocculant is not used, and is also excellent in dewaterability of sludge after flocculation, and a method for producing the same, and a treatment method of a treated object using the flocculant.SOLUTION: There are provided a flocculant which contains (A) a sulfated polysaccharide-containing material containing sulfated polysaccharide whose anion degree is a colloid equivalent value of -2.000 [meq/g] or less, and (B) xanthan gum, wherein the flocculant is a granule; a method for producing a flocculant which includes the steps of kneading at least the component (A) and the component (B), and obtaining a kneaded material, and granulating the kneaded material to obtain granules, wherein the flocculant is liquid, and the method includes a step of mixing at least the component (A) and the component (B) with a solvent; and a treatment method which includes adding the flocculant to a treated object, and treating the treated object.SELECTED DRAWING: None 【課題】ポリアクリルアミド系の高分子凝集剤を用いない場合でも、凝集性能に優れ、かつ凝集後の汚泥の脱水性にも優れる凝集剤及びその製造方法、並びに該凝集剤を用いた被処理物の処理方法の提供。【解決手段】（Ａ）アニオン度がコロイド当量値－２．０００［ｍｅｑ／ｇ］以下である硫酸化多糖を含有する硫酸化多糖含有物と、（Ｂ）キサンタンガムとを含有する凝集剤、凝集剤が、粉粒体であり、少なくとも前記（Ａ）成分と、前記（Ｂ）成分とを混練して混練物を得る工程と、前記混練物を造粒して造粒物を得る工程と、を含む凝集剤の製造方法、凝集剤が、液状であり、少なくとも前記（Ａ）成分と、前記（Ｂ）成分とを溶媒に混合する工程を含む凝集剤の製造方法、並びに前記凝集剤を被処理物に添加し、前記被処理物を処理することを含む処理方法である。【選択図】なし