https://scholars.lib.ntu.edu.tw/handle/123456789/408115
標題: | Observations of blanket characteristics in full-scale floc blanket clarifiers | 作者: | Chen L.C. Sung S.S. Lin W.W. Lee D.J. Huang C. Juang R.S. Chang H.-L. |
關鍵字: | Blanket;Coagulation;Flocculation clarifier;Sedimentation;Stability | 公開日期: | 2003 | 卷: | 47 | 期: | 1 | 起(迄)頁: | 197-204 | 來源出版物: | Water Science and Technology | 摘要: | We monitored the changes in concentrations, zeta potentials, sizes and capillary suction times of the solids flocs in the clarified water from eight floc blanket clarifiers of Ping Tsan Water Works of Taiwan Water Supply Company with low (<10 NTU) and high (>100 NTU) turbidity raw water. For the former, one-stage coagulation-sedimentation treatment was adopted which yielded a rather unstable blanket. Complete washout was noticeable when the PACI dosage was insufficient. On the treatment of high-turbidity raw water, on the other hand, the Works adopted the combined treatment process, that is, the raw water was first coagulated and settled in a pre-sedimentation tank, afterwards, its effluent was coagulated again and clarified in the clarifiers. The resulting flocs could form a networked blanket that was relatively stable to the shock load in raw water turbidity. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/408115 | ISSN: | 02731223 |
顯示於: | 化學工程學系 |
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