公开(公告)号：US10392283B2

公开(公告)日：2019-08-27

申请号：US14513445

申请日：2014-10-14

Applicant: JFE ENGINEERING CORPORATION

Inventor： Shigeki Fujiwara ,  Eri Watanabe ,  Yohei Tomida ,  Koji Fuchigami ,  Takeshi Tsuji ,  Yasuhiro Minamizato ,  Yasuto Ando ,  Yoshitaka Moriyama

IPC: C02F9/00 ,  B01D61/04 ,  B01D61/16 ,  B01D61/58 ,  C02F1/44 ,  C02F1/66 ,  C02F1/04 ,  C02F1/52 ,  B01D61/02 ,  B01D61/14 ,  C02F1/56 ,  C02F101/10 ,  C02F103/06 ,  C02F103/10

Abstract: A method and apparatus for removing soluble silica efficiently from accompanied water, produced from wells containing calcium ion, soluble silica, and sulfate ion, and not clogging a reverse osmosis membrane in the reverse osmosis membrane treatment process after that, includes adding a magnesium salt to mix with the accompanied water under alkaline conditions to produce insoluble silica and calcium sulfate. A microfiltration (MF) membrane treatment process includes treating a first reaction solution obtained in said magnesium salt adding process, with a microfiltration membrane to separate insolubilized silica and calcium sulfate by filtration. An acid adding process includes adding an acid to and mixing with filtrate obtained in the MF membrane treatment process to render a pH value of the filtrate on the range from 5 to 9 and a negative Langeliar saturation index. A reverse osmosis membrane treatment process includes treating a second reaction solution, obtained in the acid adding process, with a reverse osmosis membrane to obtain fresh water and membrane concentrates.

公开(公告)号：US20150034556A1

公开(公告)日：2015-02-05

申请号：US14513445

申请日：2014-10-14

Applicant: JFE ENGINEERING CORPORATION

Inventor： Shigeki Fujiwara ,  Eri Watanabe ,  Yohei Tomida ,  Koji Fuchigami ,  Takeshi Tsuji ,  Yasuhiro Minamizato ,  Yasuto Ando ,  Yoshitaka Moriyama

IPC: C02F9/00 ,  C02F1/04 ,  C02F1/44 ,  C02F1/52 ,  C02F1/66

CPC classification number: C02F9/00 ,  B01D61/025 ,  B01D61/04 ,  B01D61/147 ,  B01D61/16 ,  B01D61/58 ,  B01D2311/04 ,  B01D2311/08 ,  B01D2311/12 ,  B01D2311/263 ,  B01D2311/2642 ,  B01D2311/2673 ,  C02F1/04 ,  C02F1/048 ,  C02F1/441 ,  C02F1/444 ,  C02F1/52 ,  C02F1/5236 ,  C02F1/56 ,  C02F1/66 ,  C02F2001/5218 ,  C02F2101/10 ,  C02F2101/101 ,  C02F2103/06 ,  C02F2103/10 ,  B01D2311/18

Abstract: A method and apparatus for removing soluble silica efficiently from accompanied water, produced from wells containing calcium ion, soluble silica, and sulfate ion, and not clogging a reverse osmosis membrane in the reverse osmosis membrane treatment process after that, includes adding a magnesium salt to mix with the accompanied water under alkaline conditions to produce insoluble silica and calcium sulfate. A microfiltration (MF) membrane treatment process includes treating a first reaction solution obtained in said magnesium salt adding process, with a microfiltration membrane to separate insolubilized silica and calcium sulfate by filtration. An acid adding process includes adding an acid to and mixing with filtrate obtained in the MF membrane treatment process to render a pH value of the filtrate on the range from 5 to 9 and a negative Langeliar saturation index. A reverse osmosis membrane treatment process includes treating a second reaction solution, obtained in the acid adding process, with a reverse osmosis membrane to obtain fresh water and membrane concentrates.

Abstract translation: 一种从含有钙离子，可溶性二氧化硅和硫酸根离子的孔产生的伴随水中有效除去可溶性二氧化硅的方法和装置，之后在反渗透膜处理过程中不堵塞反渗透膜，包括将镁盐加入 在碱性条件下与伴生水混合，生成不溶性二氧化硅和硫酸钙。 微滤（MF）膜处理方法包括处理在所述镁盐添加方法中获得的第一反应溶液与微滤膜，以通过过滤分离不溶的二氧化硅和硫酸钙。 酸添加方法包括向MF膜处理过程中获得的滤液中加入酸并与其混合，使滤液的pH值在5至9的范围内，负的Langeliar饱和指数。 反渗透膜处理方法包括用反渗透膜处理在酸添加过程中获得的第二反应溶液以获得淡水和膜浓缩物。

公开(公告)号：US20140319056A1

公开(公告)日：2014-10-30

申请号：US14355050

申请日：2012-10-31

Applicant: JFE ENGINEERING CORPORATION

Inventor： Koji Fuchigami ,  Takeshi Mizukami ,  Makoto Kunugi ,  Norihito Uetake ,  Takeshi Uchiyama ,  Yohei Tomida

IPC: B01D65/02 ,  B01D63/02 ,  C02F1/44 ,  B01D61/00

CPC classification number: B01D65/02 ,  B01D61/002 ,  B01D63/02 ,  B01D63/043 ,  B01D2311/2669 ,  B01D2313/08 ,  C02F1/04 ,  C02F1/048 ,  C02F1/14 ,  C02F1/16 ,  C02F1/444 ,  C02F1/445 ,  C02F2001/5218 ,  C02F2103/08 ,  C02F2103/10 ,  C02F2103/365 ,  C02F2209/02 ,  C02F2303/10 ,  C02F2303/16 ,  Y02A20/128 ,  Y02A20/131 ,  Y02W10/30 ,  Y02W10/37

Abstract: It is to provide a process for manufacturing potable water from a liquid to be treated, such as seawater by using forward osmosis membrane, wherein the solution after the separation of water from dilute draw solution diluted by the migration of water from the liquid to be treated, is stably regenerated and reutilized and an apparatus therefor, and the process and apparatus are a process for manufacturing potable water which comprises, a forward osmosis step wherein a liquid of which solvent is water is allowed to contact with a draw solution produced by dissolving a prescribed amount of a volatile material in water through a semi-permeable membrane, and water in said liquid is allowed to migrate to said draw solution through said semi-permeable membrane, a distillation step wherein a dilute draw solution having been diluted with water which was produced in said step is adjusted to a prescribed temperature, and then is delivered to a distillation column where gas comprising the volatile material and water vapor is discharged from the top of the column and potable water is discharged from the bottom of the column, and a cooling • regeneration step wherein said draw solution is regenerated by cooling said gas and an apparatus therefor.

Abstract translation: 它是提供一种通过使用正向渗透膜从待处理液体（如海水）制造饮用水的方法，其中将水从稀释的溶液中分离后的溶液通过水从待处理的液体中的迁移而稀释 ，稳定再生再利用及其设备，该方法和装置是一种制造饮用水的方法，该方法和装置包括：正向渗透步骤，其中使溶剂为水的液体与通过溶解 通过半透膜在水中规定量的挥发性物质，并使所述液体中的水通过所述半透膜迁移到所述溶液中，蒸馏步骤，其中用水稀释的稀释溶液，其为 在所述步骤中制备的产物被调节到规定的温度，然后被输送到蒸馏塔，其中包含挥发性的气体 材料和水蒸气从塔顶排出，饮用水从塔的底部排出，并且冷却再生步骤，其中通过冷却所述气体再生所述的溶液及其设备。