Title:
TREATMENT METHOD FOR PETROLEUM DRILLING PRODUCED WATER
Document Type and Number:
WIPO Patent Application WO/2021/192763
Kind Code:
A1
Abstract:
Provided is a treatment method that is for petroleum drilling produced water and that comprises: a step for subjecting petroleum drilling produced water to an aggregation/precipitation treatment, and thereby separating the produced water into clear water and precipitates; and a step for subjecting the clear water to an evaporation/condensation treatment to obtain condensed water that is allowed to be discharged and concentrated water in which oil components and the like are concentrated.
Inventors:
NAKATSUKA SEIJI (JP)
TACHIKAWA TAKANOBU (JP)
FUJIWARA YOSHIHIRO (JP)
INOUE TOMOHIRO (JP)
TACHIKAWA TAKANOBU (JP)
FUJIWARA YOSHIHIRO (JP)
INOUE TOMOHIRO (JP)
Application Number:
PCT/JP2021/006349
Publication Date:
September 30, 2021
Filing Date:
February 19, 2021
Export Citation:
Assignee:
DOWA ECO SYSTEM CO LTD (JP)
SASAKURA ENG CO LTD (JP)
SASAKURA ENG CO LTD (JP)
International Classes:
B01D17/022; C02F1/04; C02F1/52
Domestic Patent References:
| WO2017183236A1 | 2017-10-26 | |||
| WO2009001676A1 | 2008-12-31 |
Foreign References:
| JP2013071057A | 2013-04-22 | |||
| JP2015039664A | 2015-03-02 | |||
| JP2005329380A | 2005-12-02 | |||
| CN201151689Y | 2008-11-19 | |||
| JP2018126680A | 2018-08-16 | |||
| US20180272246A1 | 2018-09-27 |
Attorney, Agent or Firm:
ANIYA Setuo et al. (JP)
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