SUSTAINED RELEASE SOLID FLOCCULANT AND WATER TREATMENT DEVICE

• Main Authors: SHIOI MASAHIKO, KONAKA YOSUKE, KORI SHUNSUKE, YAMAGUCHI FUTA
• Format: Patent
• Language: English; Japanese
• Published: 31.08.2022
• 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 sustained release solid flocculant having sustained releaseability of a polymer flocculant and a water treatment device using the sustained release solid flocculant.SOLUTION: A sustained release solid flocculant 1 comprises: a solid flocculant part 10 that includes a polymer flocculant; and a protection part 50 that protects the solid flocculant part 10 from contact with water. A part of the surface 12 of the solid flocculant part 10 is covered with the protection part 50. The weight average molecular weight of the polymer flocculant is preferably 1000 or larger. A flocculant surface coverage which is a ratio of a surface of the surface 12 of the solid flocculant part 10 covered with the protection part 50 is preferably 20%-99%.SELECTED DRAWING: Figure 1 【課題】高分子凝集剤の徐放性を有する徐放性固形凝集剤及び、徐放性固形凝集剤を用いる水処理装置を提供する。【解決手段】徐放性固形凝集剤１は、高分子凝集剤を含む固形凝集剤部１０と、固形凝集剤部１０を水との接触から保護する保護部５０とを含み、固形凝集剤部１０の表面１２の一部が、保護部５０で被覆される。高分子凝集剤は、重量平均分子量が１０００以上であることが好ましい。固形凝集剤部１０の表面１２のうち保護部５０で被覆された表面の比率である凝集剤表面被覆率は、２０％以上９９％以下であることが好ましい。【選択図】図１