Mitsubishi Heavy Industries Engineering, Ltd.

Nippon Kayaku Kabushiki Kaisha

Aqua Systems Limited

Naikai Salt Industries Co., Ltd.

Hitachi-johnson Controls Air Conditioning, Inc.

Yuta Hashimoto

Yoshiaki Ito

Kiichi Tokunaga

Takeshi Yasunaga

Toru Yamada

Yuichi Sadamitsu

Kazuhisa Takeuchi

Katsunori Matsui

Shoji Shinamura

Hideo Iwahashi

Masayuki Tabata

Tatsuya Aotake

Masahiro Kishi

Noriyoshi Yamada

Kentaro Maeda

Yasuhide Gouda

A compound is represented by the formula, Rto Rare each a hydrogen atom, aliphatic hydrocarbon group, aromatic group, heterocyclic group, a halogen atom, or the like. One of Xto Xis a sulfur atom, and the remaining two are carbon atoms having one R. One of Xto Xis a sulfur atom, and the other two are carbon atoms having one R. Ris a hydrogen atom, aliphatic hydrocarbon group, aromatic group, heterocyclic group, a halogen atom, or the like. When Xand Xare each RC, Xand Xare each RC, Xand Xare each RC, or Xand Xare each RC, the adjacent Rs may be bounded to each other to form a cyclic structure.

Dibenzopyrromethene boron chelate compound, near-infrared light-absorbing material, thin-film, and organic electronic device

This water treatment system is provided with: a reverse osmosis membrane device; a biofilm treatment device that has a carrier, on a surface of which is formed a biofilm, and that treats water to be treated before the water to be treated is transmitted through the reverse osmosis membrane device; and at least one of a water to be treated stoppage period circulation means and a water to be treated stoppage period supply means that are driven when the intake of new water to be treated is stopped. The water to be treated stoppage circulation means supplies and circulates water to be treated from a water to be treated discharge outlet side of the biofilm treatment device to a water to be treated supply port side. The water to be treated stoppage period supply means supplies new water to be treated to the biofilm treatment device.

Water treatment system

A reverse osmosis membrane apparatus has a plurality of high pressure vesselsandin parallel with each other with respect to introducing passageof clarified seawater obtained by subjecting raw seawater to sterilization and removal of relatively large foreign substances. The high pressure vesselsandhave first-stage reverse osmosis membrane elementsand, respectively. Concentrated seawater subjected to membrane separation in the high pressure vesselsandflows into a high pressure vessel. In the high pressure vessel, a plurality of reverse osmosis membrane elementsare arranged in series. When a detected value obtained by a differential pressure meterorprovided for the high pressure vesselorexceeds a threshold value, introduction of the clarified seawater is stopped, and the reverse osmosis membrane element is washed or replaced.

Reverse osmosis membrane apparatus and method of operating same

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Tokyo, Japan

Yuta Hashimoto