BALLAST WATER TREATMENT DEVICE, AND WASHING METHOD OF BALLAST WATER TREATMENT DEVICE

• Main Author: KANAZAWA SHINICHI
• Format: Patent
• Language: English; Japanese
• Published: 01.12.2016
• Subjects: CHEMISTRY; EQUIPMENT FOR SHIPPING; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; RELATED EQUIPMENT; SEPARATION; SHIPS OR OTHER WATERBORNE VESSELS; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

PROBLEM TO BE SOLVED: To provide a filter device usable for a longer time without exchanging a filter by washing effectively clogging of the filter, and to provide a washing method of a filtration film.SOLUTION: There is provided a filter device for filtering treatment water by a filtration film. The filter device has a constitution in which, assuming that a surface on the supply side of treatment water of the filtration film is a first surface, and that a surface thereof on the discharge side of filtrate water is a second surface, a washing operation by flow of first liquid along the first surface and a back-washing operation by passing of second liquid from the second surface toward the first surface are performed simultaneously.SELECTED DRAWING: Figure 5 【課題】フィルターの目詰まりを効果的に洗浄し、フィルターを交換すること無くより長時間使用可能な濾過装置および濾過膜の洗浄方法を提供する。【解決手段】濾過膜により被処理水を濾過する濾過装置であって、前記濾過膜の前記被処理水が供給される側の面を第１の面、濾過水が排出される側の面を第２の面とした場合に、第１の面に沿った第１の液体の流れによる洗浄運転と、第２の面から第１の面に向けて第２の液体を透過させることによる逆洗浄運転とを、同時に行うように構成された濾過装置とした。【選択図】 図５