ORGANIC COAGULANT FOR PRIMARY TREATMENT OF PAPERMAKING WASTE WATER

• Main Author: KAWAMOTO MAMORU
• Format: Patent
• Language: English; Japanese
• Published: 24.08.2015
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

PROBLEM TO BE SOLVED: To provide an organic coagulant having high COD reducing performance.SOLUTION: In a reduction method of a COD component in waste water, an organic coagulant produced by the copolymerization of at least one kind selected from among monomers expressed by formula (1) of 60-99.9 mol% and at least one kind selected from among monomers expressed by formula (2) of 0.1-5 mol% as essential components is used. Formula (1) is expressed as H2CC(R1)COQ1Q2N+R2R3R4 Z- (1) (where, Ris H or methyl group; Rand Rare the same or different and H or a C-Clower alkyl group; Ris a 7-30C alkyl aryl group; Qis O or NH; Qis a 1-4C alkyl group or hydroxyalkyl group; and Zis a counter anion). Formula (2) is expressed as H2CC(R5)COQ3(CH2)nOH (2) (where, Ris H or methyl group; Qis O or NH; and n is an integer of 1-3). 【課題】高いＣＯＤ低減性能を持つ有機凝結剤を提供する。【解決手段】式（１）で表わされる単量体から選ばれる少なくとも１種が６０〜９９．９モル％、式（２）で表わされる単量体から選ばれる少なくとも１種が０．１〜５モル％を必須成分として共重合して成る有機凝結剤を用いる廃水中のＣＯＤ成分の低減方法。Ｈ２ＣＣ（Ｒ１）ＣＯＱ１Ｑ２Ｎ＋Ｒ２Ｒ３Ｒ４・Ｚ−・・・（１）[Ｒ１はＨ又はメチル基；Ｒ２、Ｒ３は同一又は異なってＨ又はＣ１〜Ｃ４の低級アルキル基；Ｒ４は炭素数７〜３０のアルキルアリール基；Ｑ１はＯ又はＮＨ；Ｑ２は炭素数１〜４のアルキル基又はヒドロキシアルキル基；Ｚ−は対アニオン]Ｈ２ＣＣ（Ｒ５）ＣＯＱ３（ＣＨ２）ｎＯＨ・・・（２）［Ｒ５はＨ又はメチル基；Ｑ3はＯ又はＮＨ；ｎは１〜３の整数］【選択図】なし