Comparison of ferric chloride and aluminum sulfate on phosphorus removal and membrane fouling in MBR treating BAF effluent of municipal wastewater
A membrane bioreactor (MBR) was used for treating biological aerated filter effluent in a municipal wastewater plant, and chemical phosphorus removal was accomplished in the MBR. The results showed that ferric chloride of 20 mg/L and aluminum sulfate of 30 mg/L were the optimal dosages for total pho...
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| Format: | Article |
| Language: | English |
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IWA Publishing
2017-12-01
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| Series: | Journal of Water Reuse and Desalination |
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| Online Access: | http://jwrd.iwaponline.com/content/7/4/442 |
| _version_ | 1828426816264601600 |
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| author | Xin Li Yali Liu Fangfang Liu Aimin Liu Qilan Feng |
| author_facet | Xin Li Yali Liu Fangfang Liu Aimin Liu Qilan Feng |
| author_sort | Xin Li |
| collection | DOAJ |
| description | A membrane bioreactor (MBR) was used for treating biological aerated filter effluent in a municipal wastewater plant, and chemical phosphorus removal was accomplished in the MBR. The results showed that ferric chloride of 20 mg/L and aluminum sulfate of 30 mg/L were the optimal dosages for total phosphorus (TP) removal, and the TP removal efficiency was over 80%. In long-term continuous operations, both ferric chloride and aluminum sulfate effectively mitigated membrane fouling, with the corresponding growth rate of transmembrane pressure decreased to 0.08 and 0.067 kPa/d, respectively. Sludge particle sizes analysis demonstrated that the decrease of particle sizes lower than 50 μm was the main reason for membrane fouling control. Simultaneously, the proteins and polysaccharide (PS) concentrations in the MBR supernatant were analyzed, and the PS concentration significantly decreased to 2.02 mg/L at aluminum sulfate of 30 mg/L, indicating the flocculation of aluminum sulfate on PS was the main reason for mitigation of membrane fouling. |
| first_indexed | 2024-12-10T16:51:54Z |
| format | Article |
| id | doaj.art-05d0ee7b043040f3847a065a13a9d633 |
| institution | Directory Open Access Journal |
| issn | 2220-1319 2408-9370 |
| language | English |
| last_indexed | 2024-12-10T16:51:54Z |
| publishDate | 2017-12-01 |
| publisher | IWA Publishing |
| record_format | Article |
| series | Journal of Water Reuse and Desalination |
| spelling | doaj.art-05d0ee7b043040f3847a065a13a9d6332022-12-22T01:40:51ZengIWA PublishingJournal of Water Reuse and Desalination2220-13192408-93702017-12-017444244810.2166/wrd.2016.151151Comparison of ferric chloride and aluminum sulfate on phosphorus removal and membrane fouling in MBR treating BAF effluent of municipal wastewaterXin Li0Yali Liu1Fangfang Liu2Aimin Liu3Qilan Feng4 School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China E-mail: lixinwindows@163.com School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China E-mail: lixinwindows@163.com School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China E-mail: lixinwindows@163.com School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China E-mail: lixinwindows@163.com Grandblue Environment Co. Ltd, Foshan 528200, China and Guangdong Provincial Key Laboratory of Urban Water Cycle and Water Quality Security Technology, Foshan 528200, China A membrane bioreactor (MBR) was used for treating biological aerated filter effluent in a municipal wastewater plant, and chemical phosphorus removal was accomplished in the MBR. The results showed that ferric chloride of 20 mg/L and aluminum sulfate of 30 mg/L were the optimal dosages for total phosphorus (TP) removal, and the TP removal efficiency was over 80%. In long-term continuous operations, both ferric chloride and aluminum sulfate effectively mitigated membrane fouling, with the corresponding growth rate of transmembrane pressure decreased to 0.08 and 0.067 kPa/d, respectively. Sludge particle sizes analysis demonstrated that the decrease of particle sizes lower than 50 μm was the main reason for membrane fouling control. Simultaneously, the proteins and polysaccharide (PS) concentrations in the MBR supernatant were analyzed, and the PS concentration significantly decreased to 2.02 mg/L at aluminum sulfate of 30 mg/L, indicating the flocculation of aluminum sulfate on PS was the main reason for mitigation of membrane fouling.http://jwrd.iwaponline.com/content/7/4/442aluminum sulfateferric chloridemembrane foulingphosphorus removal |
| spellingShingle | Xin Li Yali Liu Fangfang Liu Aimin Liu Qilan Feng Comparison of ferric chloride and aluminum sulfate on phosphorus removal and membrane fouling in MBR treating BAF effluent of municipal wastewater Journal of Water Reuse and Desalination aluminum sulfate ferric chloride membrane fouling phosphorus removal |
| title | Comparison of ferric chloride and aluminum sulfate on phosphorus removal and membrane fouling in MBR treating BAF effluent of municipal wastewater |
| title_full | Comparison of ferric chloride and aluminum sulfate on phosphorus removal and membrane fouling in MBR treating BAF effluent of municipal wastewater |
| title_fullStr | Comparison of ferric chloride and aluminum sulfate on phosphorus removal and membrane fouling in MBR treating BAF effluent of municipal wastewater |
| title_full_unstemmed | Comparison of ferric chloride and aluminum sulfate on phosphorus removal and membrane fouling in MBR treating BAF effluent of municipal wastewater |
| title_short | Comparison of ferric chloride and aluminum sulfate on phosphorus removal and membrane fouling in MBR treating BAF effluent of municipal wastewater |
| title_sort | comparison of ferric chloride and aluminum sulfate on phosphorus removal and membrane fouling in mbr treating baf effluent of municipal wastewater |
| topic | aluminum sulfate ferric chloride membrane fouling phosphorus removal |
| url | http://jwrd.iwaponline.com/content/7/4/442 |
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