Study on the factors affecting on phosphate removal by alum
Main Article Content
Abstract
Abstract: The impact of pH, reaction time, Al3+/ P molar ratio, phosphate concentration and polymer concentration on the phosphate removal by alum sunfate was carried out. The obtained results showed that optimal conditions for phosphate removal by Al2(SO4)3.18H2O was as follow: pH of 6,0; reaction time about 30 minutes, Al3+/P mole ratio of 2:1; polymer concentration of 1,0 mg/L. Initial phosphate concentration did not affect significantly on the removal efficiency. Test with real wastewater (taken from To Lich river) proved that these abover condition was applicable.
Keywords:
Keywords: Phosphate removal; chemical precipitate; influence factors.
References
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[5] Đỗ Khắc Uẩn, Các yếu tố ảnh hưởng đến quá trình kết tủa phôtphat trong nước thải có độ kiềm thấp, Tạp chí Khoa học và công nghệ, Đại học Đà Nẵng, 30(1) (2009) 90.
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[7] Georgantas, H.P. Grigoropoulou Phosphorus and organic matter removal from synthetic wastewater using alum and aluminum hydroxide, Global NEST Journal, 8(2) (2006) 121.
[8] Haiming Huang, Dingding Zhang, Zhenjing Zhao, Peng Zhang and Faming Gao, Comparison investigation on phosphate recovery from sludge anaerobic supernatant using the electrocoagulation process and chemical precipitation, Journal of Cleaner Production 141 (2016) 429.