发明名称 |
CHEMICAL CLEANING METHOD FOR IMMERSED MEMBRANE ELEMENT |
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.
|
申请公布号 |
US2013306559(A1) |
申请公布日期 |
2013.11.21 |
申请号 |
US201113992518 |
申请日期 |
2011.11.25 |
申请人 |
KANTANI SEIKO;KITANAKA ATSUSHI;KIHARA MASAHIRO;MIYOSHI TOSHIRO;TORAY INDUSTRIES, INC. |
发明人 |
KANTANI SEIKO;KITANAKA ATSUSHI;KIHARA MASAHIRO;MIYOSHI TOSHIRO |
分类号 |
B01D65/06 |
主分类号 |
B01D65/06 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|