Daicel Corporation

Katayama Chemical Works Co., Ltd.

Yasuhiro Sakaguchi

Kiyoshi Ishii

Sakae Katayama

Sadaoki Kanada

Katumi Kojima

Takehisa Kubo

Junichi Koike

Michitake Kamata

Katsumi Kojima

A liquid treating unit includes a module comprising a channel member for collecting a product liquid for recovery; a semipermeable membrane member liquid-tightly joined to the channel member and made from a semipermeable membrane strip by alternately folding the strip longitudinally thereof to provide feed liquid passages and product liquid passages on the front and rear sides of the membrane respectively, each pair of product liquid passages defining leaf portions of the membrane being adhered at each end of the passage to liquid-tightly close the product liquid passage only; spacers inserted into the feed liquid passages; and a covering member surrounding the outer periphery of the membrane member. The feed liquid passages therefore have a regulated cross sectional area to permit the feed liquid to flow through the passages in parallel and straight direction at an increased speed relative to the membrane surface, ensuring a reduction in dead space and efficient use of the membrane. The membrane surface defining the feed liquid passages can be cleaned with ease.

Liquid treating unit

The present invention relates to a method and apparatus for treating waste water on ships, and more particularly to a method and apparatus for treating waste water on ships in a closed system.

Method and apparatus for treating waste water on ships

A spirally-wound membrane-type separator module capable of reversing the direction of liquid flow comprises an outer cylindrical pressure vessel, a spirally-wound membrane element disposed within said outer vessel and extending in the axial direction thereof, and a plurality of brine seals disposed in the annular space defined between the outer periphery of said membrane element and the inner periphery of said outer vessel, each brine seal including a ring-like portion fitted on the outer periphery of said element and a cup-shaped flange portion sealingly engaging the inner periphery of said outer vessel, said brine seals being arranged close to one another in the direction of axis of the element with the flange portions of the brine seals being directed in opposite directions.

Spirally-wound membrane-type separator module capable of reversing the

Fruit wines excellent in taste and bouquet can be manufactured from fruit juices of low sugar content by subjecting the crude fruit juices to a semi-permeable membrane separation process (reverse osmosis or ultrafiltration), thereby to concentrate the crude fruit juices. The time periods required for fermenting the concentrated fruit juices and aging the wines made therefrom are considerably shorter in comparison with other wine-making processes.

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Yokohama, Japan

Yasuhiro Sakaguchi