Abstract
A new inorganic-organic hybrid material zirconium-glycine complex (ZGC) was firstly used as a coagulant in a coagulation process to treat Pearl River raw water. Its coagulation performance was compared with commonly used aluminum (Al) coagulants such as aluminum sulfate (Al2(SO4)3) and polyaluminum chloride (PAC), in terms of water quality parameters and floc properties. ZGC coagulation achieved higher removal of turbidity (93.8 %) than other traditional coagulants. Charge neutralization was proven to act as a dominant mechanism during ZGC coagulation. The aggregated flocs with ZGC showed the fastest growth rate and good recovery ability compared with the other coagulants and achieved the largest floc size within 5 min. The ZGC coagulant can decrease the hydraulic retention time and increase removal efficiency.
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This study was financially supported by the National Nature Science Foundation of China (Nos. 51078148 and 41173103).
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Zhang, Z., Wu, C., Wu, Y. et al. Comparison of coagulation performance and floc properties of a novel zirconium-glycine complex coagulant with traditional coagulants. Environ Sci Pollut Res 21, 6632–6639 (2014). https://doi.org/10.1007/s11356-014-2575-7
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DOI: https://doi.org/10.1007/s11356-014-2575-7