دورية أكاديمية
[Effects of Pretreatment on Hydraulic Irreversible Membrane Fouling During Ultrafiltration Short Process: A Pilot Study].
| العنوان: | [Effects of Pretreatment on Hydraulic Irreversible Membrane Fouling During Ultrafiltration Short Process: A Pilot Study]. |
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| المؤلفون: | Yang HY; Guangdong GDH Water Co., Ltd., Shenzhen 518021, China.; School of Environmental and Municipal Engineering, Harbin Institute of Technology, Harbin 150090, China., Xing JJ; School of Environmental and Municipal Engineering, Harbin Institute of Technology, Harbin 150090, China., Wang C; School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266033, China., Sun GS; Guangdong GDH Water Co., Ltd., Shenzhen 518021, China., Zhao Y; Guangdong GDH Water Co., Ltd., Shenzhen 518021, China., Liang H; School of Environmental and Municipal Engineering, Harbin Institute of Technology, Harbin 150090, China., Xu YQ; Guangdong GDH Water Co., Ltd., Shenzhen 518021, China., Li GB; School of Environmental and Municipal Engineering, Harbin Institute of Technology, Harbin 150090, China. |
| المصدر: | Huan jing ke xue= Huanjing kexue [Huan Jing Ke Xue] 2017 Mar 08; Vol. 38 (3), pp. 1046-1053. |
| نوع المنشور: | English Abstract; Journal Article |
| اللغة: | Chinese |
| بيانات الدورية: | Publisher: Ke xue zhu ban she Country of Publication: China NLM ID: 8405344 Publication Model: Print Cited Medium: Print ISSN: 0250-3301 (Print) Linking ISSN: 02503301 NLM ISO Abbreviation: Huan Jing Ke Xue Subsets: PubMed not MEDLINE |
| أسماء مطبوعة: | Original Publication: Beijing : Ke xue zhu ban she, |
| مستخلص: | Pilot-scale performances for ultrafiltration of Dongjiang river water without and with micro-coagulation and coagulation-adsorption-sedimentation pretreatments were conducted to investigate the effects of pretreatments on hydraulic irreversible fouling of ultrafiltration short processes. Scanning electron microscope (SEM) imaging, high performance size exclusion chromatography (HPSEC) and fluorescence excitation-emission matrix (EEM) were employed to identify foulants responsible for irreversible fouling during ultrafiltration with and without pretreatments. The results showed that the hydraulic irreversible fouling rate was 0.16 kPa·d -1 with micro-coagulation pretreatment at 10 L·(m 2 ·h) -1 , while the rate without pretreatment was 0.32 kPa·d -1 at the same flux. Meanwhile, the fouling rate with coagulation-adsorption-sedimentation pretreatment was almost zero at the same flux. Furthermore, when the flux increased to 17 L·(m 2 ·h) -1 , the irreversible fouling was not observable with coagulation-adsorption-sedimentation pretreatment (backwashing every 24 hours). Properties of foulants from external membrane and internal membrane after backwashing showed that the protein-like and fulvic-like substances were responsible for irreversible fouling in Dongjiang river water. Furthermore, structural alteration of cake layer resulted in less cake resistance and higher backwash efficiency after micro-coagulation pretreatment, leading to less irreversible fouling. Coagulation-adsorption-sedimentation pretreatment decreased irreversible fouling with higher removal efficiency of protein-like and fulvic substances, which were the foulants responsible for irreversible fouling during ultrafiltration. Both micro-coagulation and coagulation-adsorption-sedimentation pretreatments decreased irreversible fouling during ultrafiltration short process. |
| فهرسة مساهمة: | Keywords: low flux; membrane foulants; pretreatment; short process; ultrafiltration |
| تواريخ الأحداث: | Date Created: 20180703 Date Completed: 20181105 Latest Revision: 20181105 |
| رمز التحديث: | 20231215 |
| DOI: | 10.13227/j.hjkx.201608028 |
| PMID: | 29965575 |
| قاعدة البيانات: | MEDLINE |
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