Modified forward osmosis membrane module for flow regime improvement

US10272387B2 · kind B2 · utility

Assignee

• TONGJI UNIVERSITY · CN

Inventors

• Qiaoying WANG · Shanghai, CN
• Jie Wang · Mianyang, CN
• Zhiwei Wang · Beijing, CN
• Zhichao Wu · Tianjin, CN
• Yanqiang Ma · Shanghai, CN
• Xueye Wang · Shanghai, CN
• Chen-Kwang Pan · Yilan City, TW
• Mei Chen · Hsinchu, TW
• Zimeng Li · Shanghai, CN
• Kaili YAN · Shanghai, CN

Key dates

• Filing date: Nov 29, 2016
• Grant date: Apr 30, 2019
• Expiry date: Apr 2, 2037

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D2313/54
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

To provide a modified forward osmosis (FO) membrane module for flow regime improvement, the FO membrane module includes but not limited to: a water inlet; a water outlet; a forward osmosis (FO) membrane; a frame; and folded plates for improving flow regime in which draw solution is introduced into the water inlet of membrane module, then flowed through flow channels composed by three opposite folded plates vertically arranged on upper and bottom portions of the frame alternatively along horizontal direction with equal space; and drawn out from the water outlet. The flow regime improvement is achieved by increasing number of flow-guide folded plate, which results in the decrease of internal concentration polarization and membrane fouling. Structure of frame is modified to improve flow regime and to satisfy requirement of convenient and reliable connections between numbers of membrane modules in the FO membrane system.