Recycling Industrial Wastewater with Nanofiltration Membrane Technology
Author Information
Author(s): Deng Yiqiang, Bai Xiaoqian, Lin Jialong, Yang Linyan, Lin Yuqing, Lin Mingyue, Xiu Guangli, Dolar Davor
Primary Institution: East China University of Science and Technology
Hypothesis
The study aims to determine the most effective membrane type for treating wastewater from Eternal Electronic (Suzhou, China) Co., Ltd.
Conclusion
The NF90 membrane was found to be the most effective for treating wastewater, achieving high salt rejection and optimal operating conditions.
Supporting Evidence
- The NF90 membrane achieved a stable salt rejection of approximately 80%.
- Optimal operating conditions for the NF90 membrane were determined to be 25 °C, 150 psi, and 1 L/min.
- Cleaning the membranes with HCl significantly improved their performance after fouling.
- The treated wastewater met the national standard for circulating cooling water.
Takeaway
This study shows that using special filters can help clean dirty water from factories, making it safe to use again.
Methodology
The study involved testing four types of membranes (NF90, NF270, XN45, and XLE) under controlled conditions to evaluate their performance in treating industrial wastewater.
Limitations
The study does not address the long-term operational costs and energy consumption associated with the membrane technology.
Digital Object Identifier (DOI)
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