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http://dx.doi.org/10.4491/KSEE.2016.38.8.428

Phosphorus Removal from Municipal Wastewater Using Ti-based Coagulants  

Shin, So-Yeon (Department of Environmental Engineering, Kangwon National University)
Kim, Jong-Ho (Department of Applied Chemical Engineering, Chonnam National University)
Ahn, Johng-Hwa (Department of Environmental Engineering, Kangwon National University)
Publication Information
Journal of Korean Society of Environmental Engineers / v.38, no.8, 2016 , pp. 428-434 More about this Journal
Abstract
This study evaluated the efficacy of Ti-based coagulants on phosphorus (P) removal from municipal wastewater and compared them with Al-based coagulants. Jar test experiments were performed at various chemical doses and OH/Ti molar ratio (B value). The higher the intial phosphate ($PO_4-P$) concentration, the lower the [Ti]/[P] to reach a residual concentration below 0.2 mg P/L. Removal efficiencies of total phosphorus increased with an increased coagulant dose but decreased after the efficiencies reached their maximum value regardless of coagulant or B value. On the other hand, $PO_4-P$ removal showed an increasing trend with an increased coagulant dose, reaching the plateau value under large coagulant dose conditions for both Ti- and Al-based coagulants regardless of B value. The chemical dose of Ti-based coagulants was approximately twice higher than that of Al-based coagulants with the same P-removal efficiency. The coagulation efficiency was influenced by different B values.
Keywords
Municipal Wastewater; OH/Ti Molar Ratio; Phosphorus; Poly Titanium Chloride; Ti-based Coagulant;
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Times Cited By KSCI : 3  (Citation Analysis)
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