膜科学与技术

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Study on the properties and reuse of printing and dyeing wastewater treated by forward osmosis

Authors： YE Jingling, WANG Hao，CHEN Donghui, HUANG Manhong

Units： College of Environmental Science and Engineering，Key Laboratory of Textile Pollution Control and Emission Reduction Technology, Donghua University，Shanghai 201620，China

KeyWords： forward osmosis; printing and dyeing wastewater; membrane fouling; recycling for dyeing

ClassificationCode：TQ028.8；X703.1

year,volume(issue):pagination： 2022,42(6):144-150

Abstract：

The forward osmosis process was used to treat printing and dyeing wastewater. The effect of different membrane orientations, pH and temperature on membrane properties and membrane fouling were examined, and the effluent was reused for dyeing. The results showed that when the membrane orientation was active layer facing the feed (Al-FS), the membrane fouling was light and the flux recovery ratio reached 94.23%. With the increase of pH, the rejection efficiency of Sb、Ca and Mg increased by 13.14%、3.19% and 2.83 %. The water flux increased by 13.58% with the feed temperature increased from 25℃ to 45℃. After operation, the results of scanning electron microscopy (SEM) and three-dimensional excitation emission (EEM) showed forward osmosis membrane fouling was caused by inorganic scaling and organic fouling. The effluent was used for dyeing process, and the exhaustion rate was basically the same as that of traditional process.

Funds：

国家重点研发计划（2019YFC0408304）

AuthorIntro：

叶静菱（1998-），女，江西景德镇人，硕士研究生，主要研究方向：正渗透工艺及其膜污染控制研究

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