SCREW TYPE SOLID-LIQUID SEPARATION APPARATUS INCORPORATING FLOCCULATING/MIXING DEVICE

• Main Authors: HONDA NOBUO, YAMASHITA MANABU
• Format: Patent
• Language: English; Japanese
• Published: 27.07.2015
• Subjects: CHEMISTRY; METALLURGY; MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

PROBLEM TO BE SOLVED: To provide a screw type solid-liquid separation apparatus which incorporates a flocculating/mixing device and thereby needing no arrangement of a flocculating/mixing tank at the preceding stage of the solid-liquid separation apparatus.SOLUTION: The screw type solid-liquid separation apparatus incorporating a flocculating/mixing device is provided in which an outer cylindrical screen 1 supported by front and rear frames 4 and 6 and a screw shaft 2 form a filtering chamber 21, and which conducts solid-liquid separation while transferring a flocculated sludge by a screw blade 11 wound on the screw shaft 2. The screw type solid-liquid separation apparatus incorporating the flocculating/mixing device include: a connection tube 3 feeding the sludge to the front end of the screw shaft 2; a feeding path 9 formed inside the screw shaft 2; a feeding hole 10 opened at the rear end of the screw shaft 2; a discharge port 12 formed at the front end side of the screw shaft 2; and an agitation device 14 arranged in the feeding path 9. Flocculated flock can be formed inside the screw shaft. 【課題】 スクリュー型固液分離装置に凝集混和装置を内蔵することで、固液分離装置前段に凝集混和槽を配設する必要のないスクリュー型固液分離装置を提供する。【解決手段】 フロントフレーム４とリアーフレーム６で支架した外筒スクリーン１とスクリュー軸２でろ過室２１を形成し、スクリュー軸２に巻き掛けたスクリュー羽根１１で凝集汚泥を移送しながら固液分離するスクリュー型固液分離装置において、前記スクリュー軸２の前端部に汚泥を供給する連結管３と、前記スクリュー軸２の内部に形成される供給路９と、前記スクリュー軸２の後端部に開口した供給孔１０と、前記スクリュー軸２の前端部側に形成した排出口１２と、前記供給路内９に配設した攪拌装置１４と、を備えることを特徴とする凝集混和装置を内蔵したスクリュー型固液分離装置で、スクリュー軸内で凝集フロックを形成することができる。【選択図】 図２