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논문 기본 정보

자료유형
학술저널
저자정보
Jinfeng Zhang (Tianjin University) Guanyi Chen (Tianjin University) Yanning Ma (Tianjin Academy of Environmental Sciences) Miao Xu (Tianjin Academy of Environmental Sciences) Songyan Qin (Tianjin University of Technology) Xiaoliang Liu (Tianjin Academy of Environmental Sciences) Haijun Feng (Tianjin Academy of Environmental Sciences) Lian Hou (Tianjin University)
저널정보
대한환경공학회 Environmental Engineering Research Environmental Engineering Research 제27권 제1호
발행연도
2022.2
수록면
106 - 115 (10page)

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초록· 키워드

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A new technique for treating pickling wastewater discharged from the steel industry using membrane filters was developed and membrane fouling was characterized in a full scale membrane filter. The morphological and chemical properties were examined through scanning electron microscopy (SEM), X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDS) and inductively coupled plasma optical emission spectroscopy (ICP-OES) etc. The results showed that inorganic elements such as phosphates, chlorides, and sulfates were severely blocked in membrane surfaces and pores. The porosity, permeability, hydrophilic contact angle, and surface charge capacity of fouled membranes were all lower than those of new membranes, while the optimal neutralization reaction pH region for fouled membranes shifted and narrowed. Charge neutralization is a critical reason to membrane fouling. By increasing the Zeta potential of the pickling wastewater, the membrane fouling could be controlled. This method is proven to effectively improve the separation property of precipitates after pickling wastewater was neutralized. Moreover, Neutralization helped to reduce the unit number of treatment processes. This investigation could assist in obtaining a better understanding of the fouling properties and behavior in the full-scale membrane filters in the pickling wastewater treatment.

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ABSTRACT
1. Introduction
2. Material and Methods
3. Results and Discussion
4. Conclusions
References

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