公开(公告)号：US20130306559A1

公开(公告)日：2013-11-21

申请号：US13992518

申请日：2011-11-25

申请人： Seiko Kantani ,  Atsushi Kitanaka ,  Masahiro Kihara ,  Toshiro Miyoshi

发明人： Seiko Kantani ,  Atsushi Kitanaka ,  Masahiro Kihara ,  Toshiro Miyoshi

IPC分类号： B01D65/06

CPC分类号： B01D65/06 ,  B01D65/02 ,  B01D2315/06 ,  B01D2321/16 ,  B01D2321/162 ,  B01D2321/26 ,  B01D2321/28 ,  C02F3/1273 ,  C02F2303/16 ,  Y02W10/15

摘要： The present invention relates to a cleaning method for a submerged membrane element used in a membrane bioreactor treatment in which organic wastewater containing 1 mg/L or more of manganese is subjected a biological treatment in a bioreactor treatment tank and then subjected to solid-liquid separation by a membrane filtration device provided in the bioreactor treatment tank, in which after a first liquid containing an oxidizing agent is injected from a secondary side of the submerged membrane element to a primary side thereof and maintained for a certain period of time, the first liquid containing an oxidizing agent is suction-discharged from the secondary side to the outside of the system, and then a second liquid containing an acid is injected from the secondary side of the submerged membrane element to the primary side thereof and maintained for a certain period of time, followed by conducting suction filtration operation.

摘要翻译： 本发明涉及一种用于膜生物反应器处理的浸没膜元件的清洗方法，其中含有1mg / L以上锰的有机废水在生物反应器处理槽中进行生物处理，然后进行固液分离 通过设置在生物反应器处理槽中的膜过滤装置，其中在将含有氧化剂的第一液体从浸没的膜元件的二次侧注入其一次侧并保持一定时间后，第一液体 含有氧化剂的二次侧吸附到体系外侧，然后将含有酸的第二液体从浸没膜元件的二次侧注入其一次侧，并保持一定时间 时间，然后进行抽滤操作。

公开(公告)号：US20110226695A1

公开(公告)日：2011-09-22

申请号：US12298980

申请日：2007-04-16

申请人： Masahide Taniguchi ,  Yoshitsugu Kojima ,  Toshiro Miyoshi

发明人： Masahide Taniguchi ,  Yoshitsugu Kojima ,  Toshiro Miyoshi

IPC分类号： C02F1/44 ,  B01D61/04 ,  C02F103/08

CPC分类号： B01D61/022 ,  B01D63/12 ,  B01D2317/025 ,  B01D2317/04 ,  C02F1/441 ,  C02F1/66 ,  C02F2101/108 ,  C02F2103/08 ,  C02F2303/16 ,  C02F2303/20 ,  Y02A20/131

摘要： Provided is a method for producing fresh water, having a plurality of desalination processes in parallel where raw water or pre-treated raw water is treated by a first semi-permeable membrane unit, and the resulting permeate of which a pH is raised is treated in the second semi-permeable membrane unit, comprising: temporally, in part of desalination process A; lowering a pH of raw water or pre-treated water to be supplied to a first semi-permeable membrane unit A1 and to make a pH of the resulting permeate of the first semi-permeable membrane unit A1 lower than that of feed water of a second semi-permeable membrane unit B2 in desalination process B to be supplied to a second semi-permeable membrane unit A2; and mixing the permeate obtained from the second semi-permeable membrane unit A2 with the permeate obtained from the second semi-permeable membrane unit B2 in said desalination process B.

摘要翻译： 本发明提供一种生产淡水的方法，其中通过第一半透膜单元处理原水或预处理的原水，并行处理多个脱盐过程，并将其中提高pH的所得渗透物进行处理 所述第二半透膜单元包括：时间上部分脱盐过程A; 降低要供给到第一半透膜单元A1的原水或预处理水的pH值，使得第一半透膜单元A1的所得渗透物的pH低于第二半渗透膜单元A1的供给水的pH 脱盐工序B中的半透膜单元B2供给到第二半透膜单元A2; 并将从第二半透膜单元A2获得的渗透物与在所述脱盐过程B中从第二半透膜单元B2获得的渗透物混合。