发明申请
WO2007143448A1 METHOD OF IMPROVING PERFORMANCE OF ULTRAFILTRATION OR MICROFILTRATION MEMBRANE PROCESS IN BACKWASH WATER TREATMENT
审中-公开
基本信息:
- 专利标题： METHOD OF IMPROVING PERFORMANCE OF ULTRAFILTRATION OR MICROFILTRATION MEMBRANE PROCESS IN BACKWASH WATER TREATMENT
- 专利标题（中）：提高反渗透水处理中超滤或微滤膜工艺性能的方法
- 申请号：PCT/US2007/069865 申请日：2007-05-29
- 公开(公告)号：WO2007143448A1 公开(公告)日：2007-12-13
- 发明人： MUSALE, Deepak, A.
- 申请人： NALCO COMPANY , MUSALE, Deepak, A.
- 申请人地址： 1601 W. Diehl Road Naperville, Illinois 60563-1198 US
- 专利权人： NALCO COMPANY,MUSALE, Deepak, A.
- 当前专利权人： NALCO COMPANY,MUSALE, Deepak, A.
- 当前专利权人地址： 1601 W. Diehl Road Naperville, Illinois 60563-1198 US
- 代理机构： DIMATTIA, Peter, A. et al.
- 优先权： US11/421,172 20060531
- 主分类号： B01D61/00
- IPC分类号： B01D61/00 ; C02F1/44
摘要：
A method of processing backwash water by use of a membrane separation process is disclosed. Specifically, the following steps are taken to process backwash water: collecting backwash water in a receptacle suitable to hold said backwash water; treating said backwash water with one or more water soluble polymers, wherein said water soluble polymers are selected from the group consisting of: amphoteric polymers; cationic polymers, wherein, said charge density is from about 5 mole percent to about 100 mole percent; zwitterionic polymers; and a combination thereof; optionally mixing said water soluble polymers with said backwash water; passing said treated backwash water through a membrane, wherein said membrane is an ultrafiltration membrane or a microfiltration membrane; and optionally back-flushing said membrane to remove solids from the membrane surface.
摘要（中）：
公开了一种通过使用膜分离方法来回洗水的方法。 具体地说，采取以下步骤来处理反冲洗水：在适于保持所述反冲洗水的容器中收集回洗水; 用一种或多种水溶性聚合物处理所述反洗水，其中所述水溶性聚合物选自：两性聚合物; 阳离子聚合物，其中所述电荷密度为约5摩尔％至约100摩尔％; 两性离子聚合物; 及其组合; 任选地将所述水溶性聚合物与所述回洗水混合; 使所述处理的反洗水通过膜，其中所述膜是超滤膜或微滤膜; 并且可选地反冲洗所述膜以从膜表面除去固体。
IPC结构图谱:
| B | 作业；运输 |
| --B01 | 一般的物理或化学的方法或装置 |
| ----B01D | 分离 |
| ------B01D61/00 | 利用半透膜分离的方法，例如渗析，渗透，超滤；其专用设备，辅助设备或辅助操作 |