TAILIEUCHUNG - Removal of total phosphorus from municipal wastewater using cylindrical aluminum electrode in continuous mode

This study aimed to apply electro-coagulation method using cylindrical Aluminum electrode in continuous mode to remove total phosphorus (T-P) in municipal wastewater. The effects of NaCl concentration (or conductivity) and hydraulic retention time (HRT, or flow rate) on T-P removal efficiency were investigated. | Journal of Science and Technology 54 (4B) (2016) 88-93 REMOVAL OF TOTAL PHOSPHORUS FROM MUNICIPAL WASTEWATER USING CYLINDRICAL ALUMINUM ELECTRODE IN CONTINUOUS MODE Tran Tuan Viet1, *, Yoon Yong Soo2, Tran Minh Chi1 1 Institute for Tropicalization and Environment (ITE), 57A Truong Quoc Dung St., Phu Nhuan Dist., Ho Chi Minh City, Viet Nam 2 Lab of Advance Environmental Technology, Dept. of Chemical Engineering, Dankook University, 448-701, Jukjeon-dong, Suji-gu, Yongin-si, Gyeonggi-do, South Korea *Email: Received: 15th August 2016; Accepted for publication: 10th November 2016 ABSTRACT This study aimed to apply electro-coagulation method using cylindrical Aluminum electrode in continuous mode to remove total phosphorus (T-P) in municipal wastewater. The effects of NaCl concentration (or conductivity) and hydraulic retention time (HRT, or flow rate) on T-P removal efficiency were investigated. To determine the efficiency of this system the ratio Al consumption/T-P removal was also considered. The results showed that, with raw sewage as influent, HRT = min and added NaCl = % was found the best conditions for the highest T-P removal efficiency ( %; T-P concentration remainder was mg/L) and the ratio Al consumption/T-P removal was . In general, this method achieves a high efficiency of removing phosphorus from wastewater and it can be used in sewage treatment systems. Keywords: total phosphorus removal, cylindrical aluminum electrode, wastewater treatment, electro-coagulation. 1. INTRODUCTION The most common problem of phosphorus compounds in ecosystem is eutrophication. In 1998, Lawrence and Jackson defined eutrophication being the enrichment of bodies of fresh water by inorganic plant nutrients, such as nitrate, phosphate. It may occur naturally and can also be the result of human activity and is particularly evident in slow-moving rivers and shallow lakes, etc. Increased sediment deposition can eventually raise the .

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