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Insight into the magnetic lime coagulation-membrane distillation process for desulfurization wastewater treatment: From pollutant removal feature to membrane fouling
Zheng, Libing; Jiao, Yunyi; Zhong, Hui; Zhang, Chun; Wang, Jun; Wei, Yuansong
2020-06-05
Source PublicationJOURNAL OF HAZARDOUS MATERIALS
ISSN0304-3894
Volume391Pages:1-12
AbstractThe high suspended solid (SS) and salts were main issues for flue gas desulfurization wastewater (FGDW). A magnetic lime coagulation (MLC)-membrane distillation (MD) integrated process was firstly applied with a self-made poly (vinylidene fluoride-co-chlorotrifluoroethylene) (PVDF-CITE) membrane and the pollutants remove feature and membrane fouling were discussed. The SS was nearly 100 % removed and magnetic seed significantly accelerate the settleability. The flux was 43.00 kg/m(2)h with a salt rejection > 99 %. It was higher than 13 kg/m(2)h in the first 125 h during the 18d continuous test, and the rejection for all cations, anions, total organic carbon (TOC) and total inorganic carbon (TIC) were higher than 99.95 %, 99.00 %, 98.81 %, and 99.65 %, respectively. Humic substances and tryptophan with 100 - 5000 Da were main dissolved organic matter (DOM), which were significantly removed. However, membrane fouling and wetting happened after 150 h. Scaling was the main foulants, while the organic fouling and biofouling were also detected. A new bricklaying model was induced to depict the formation of foulant layer, the colloids, organic matters (OMs) and microbe communities act as the concrete, while the inorganic crystals (magnesium and calcium oxysulphides) were the bricks. This contribution offers a new method for FGDW treatment and the membrane fouling mechanism of MD process.
Department水污染控制实验室
KeywordMembrane distillation PVDF-CTFE Membrane fouling mechanism Flue gas desulfurization wastewater Magnetic coagulation
Document Type期刊论文
Identifierhttp://ir.rcees.ac.cn/handle/311016/45047
Collection水污染控制实验室
Recommended Citation
GB/T 7714
Zheng, Libing,Jiao, Yunyi,Zhong, Hui,et al. Insight into the magnetic lime coagulation-membrane distillation process for desulfurization wastewater treatment: From pollutant removal feature to membrane fouling[J]. JOURNAL OF HAZARDOUS MATERIALS,2020,391:1-12.
APA Zheng, Libing,Jiao, Yunyi,Zhong, Hui,Zhang, Chun,Wang, Jun,&Wei, Yuansong.(2020).Insight into the magnetic lime coagulation-membrane distillation process for desulfurization wastewater treatment: From pollutant removal feature to membrane fouling.JOURNAL OF HAZARDOUS MATERIALS,391,1-12.
MLA Zheng, Libing,et al."Insight into the magnetic lime coagulation-membrane distillation process for desulfurization wastewater treatment: From pollutant removal feature to membrane fouling".JOURNAL OF HAZARDOUS MATERIALS 391(2020):1-12.
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