Hiroyuki Yamamura

TL;DR: In this article, an apparatus and method for a multistage reverse osmosis separation with a booster pump provided in the concentrate flow channel between a module unit is presented, where the total effective reverse Osmosis membrane area is in the range of 20-80% of that of preceding module unit.

TL;DR: In this article, a spiral wound gas permeable membrane module with a hollow mandrel and a plurality of holes is proposed, where a partition block for blocking the flow of a gas flowing in the mandrel in its longitudinal direction and a flow regulating wall directing the flow introduced into the envelope-like membrane through the holes aligned on one side of the partition block so that the gas travels in the envelopelike membrane in a spirally outer direction, then returns in a spiral inner direction.

TL;DR: In this paper, a new type reverse osmosis (RO) membranes and its process for seawater desalination were developed, which brought advantages of high water recovery, low energy cost and lower plant installation cost.

TL;DR: The brine conversion two-stage reverse osmosis seawater desalination system (BCS) as discussed by the authors is the state-of-the-art SWRO system.

TL;DR: In this paper, a reverse osmosis membrane element is provided that can treat a raw liquid throughout a wide raw liquid pressure range from a low pressure to a high pressure, comprising a reverse Osmosis membranes, a permeated liquid passage conduit provided on one surface of the reverse OSM membrane, and arranged to face it, and a water permeable fabric provided between the reverse oasmosis membrane and the passage conduit; it is preferable that the water permeability fabric has an average surface roughness of 2-2 μm, that is has a pure water permeation coefficient