Application of forward osmosis (FO) under ultrasonication on sludge thickening of waste activated sludge
學年 104
學期 1
出版（發表）日期 2015-10-16
作品名稱 Application of forward osmosis (FO) under ultrasonication on sludge thickening of waste activated sludge
作品名稱（其他語言）
著者 Nguyen, Cong Nguyen; Nguyen, Thi Hau; Chen, Shiao-Shing; Nguyen, Nhat Thien; Li, Chi-Wang
單位
出版者
著錄名稱、卷期、頁數 Water Science & Technology 72(8), p.1301-1307
摘要 Forward osmosis (FO) is an emerging process for dewatering solid–liquid stream which has the potential to be innovative and sustainable. However, the applications have still been hindered by low water flux and membrane fouling when activated sludge is used as the feed solution due to bound water from microbial cells. Hence, a novel strategy was designed to increase sludge thickening and reduce membrane fouling in the FO process under ultrasonic condition. The results from the ultrasound/FO hybrid system showed that the sludge concentration reached up to 20,400 and 28,400 mg/L from initial sludge concentrations of 3000 and 8000 mg/L with frequency of 40 kHz after 22 hours, while the system without ultrasound had to spend 26 hours to achieve the same sludge concentration. This identifies that the presence of ultrasound strongly affected sludge structure as well as sludge thickening of the FO process. Furthermore, the ultrasound/FO hybrid system could achieve NH4+-N removal efficiency of 96%, PO43−-P of 98% and dissolved organic carbon (DOC) of 99%. The overall performance demonstrates that the proposed ultrasound/FO system using seawater as a draw solution is promising for sludge thickening application.
關鍵字
語言 en
ISSN 1996-9732;0273-1223
期刊性質 國外
收錄於 SCI
產學合作
通訊作者
審稿制度 否
國別 GBR
公開徵稿
出版型式 ,電子版,紙本
相關連結

機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/104740 )