公开(公告)号：US20170030885A1

公开(公告)日：2017-02-02

申请号：US15188206

申请日：2016-06-21

Applicant: HITACHI, LTD.

Inventor： Hajime KATO ,  Shigeki TERUI ,  Minoru MORITA ,  Yoshio NAKAYAMA ,  Makoto ONISHI

IPC: G01N33/28 ,  G01N29/02

CPC classification number: G01N33/2847 ,  G01N29/022 ,  G01N29/036 ,  G01N29/222 ,  G01N2291/014 ,  G01N2291/0226 ,  G01N2291/0256 ,  G01N2291/0426

Abstract: An oil content measurement device includes a fluid device which mixes water to be treated containing oil content with a solvent and extracts the oil content into the solvent, a sensor unit which has a casing storing a quartz crystal oscillator therein with a ring-like spacer in between, a dispensing nozzle which is disposed above the oscillator at a predetermined gap there between and feeds a predetermined amount of the solvent after the oil content has been extracted on the oscillator, a sensor circuit which measures a resonance frequency of the oscillator, and controller which controls at least the fluid device and the sensor circuit. Provided is a arithmetic logical unit, based on a change amount of the received resonance frequency of the oscillator in the sensor unit to which the solvent after the oil content has been extracted has been fed, measures the oil content remaining on the oscillator.

Abstract translation: 含油量测量装置包括：流体装置，其将含有油含量的被处理水与溶剂混合并将油含量提取到溶剂中;传感器单元，其具有在其中存储石英晶体振荡器的壳体，其具有环状间隔物 在分配喷嘴之间以预定的间隙设置在振荡器上方，并且在振荡器上提取油含量之后进给预定量的溶剂，测量振荡器的共振频率的传感器电路和控制器 其至少控制流体装置和传感器电路。 提供了一种算术逻辑单元，其基于在提取了含油量的溶剂之后的传感器单元中的振荡器的接收到的共振频率的变化量，测量了振荡器上剩余的油含量。

公开(公告)号：US20180280888A1

公开(公告)日：2018-10-04

申请号：US15936643

申请日：2018-03-27

Applicant: HITACHI, LTD.

Inventor： Koji FUKUZAKI ,  Makoto ONISHI ,  Shinichi YOSHIKAWA ,  Shuji YAMADA ,  Kotaro KITAMURA ,  Yasutaka KONDO

IPC: B01D65/02 ,  B01D61/02 ,  B01D61/08 ,  B01D61/12 ,  B01D63/06 ,  C02F1/44 ,  B01D65/06

Abstract: A reverse osmosis treatment apparatus includes a membrane unit including an osmosis membrane module. The membrane unit includes a plurality of banks connected in series, each bank including an osmosis membrane module. At least one of the banks includes a treatment water pipe valve and a concentrated water pipe valve, and a bypass pipe capable of diverting the water to be treated, which is to be supplied to the bank, around the bank and draining the water to be treated and a chemical cleaning pipe capable of supplying the reverse osmosis membrane module disposed in the bank with chemical cleaning water are connected. A reverse osmosis treatment method is for cleaning intermittently a bank having the treatment water pipe valve and the concentrated water pipe valve while continuing the reverse osmosis treatment using the remaining bank.