Integration of inorganic micronutrients and natural starch based cationic flocculant in primary treated sewage effluent (PTSE) treatment

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Journal Article
Separation Science and Technology, 2010, 45 (5), pp. 619 - 625
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In this study, a natural starch-based cationic flocculant (SBCF) was first evaluated using a granular activated carbon fluidized-bed bioreactor (GAC-FBBR) to treat a high strength synthetic domestic wastewater (primary treated sewage effluent) containing refractory organic matters. The positive effect of SBCF on microorganisms and organic removal was obviously observed. When the optimal dose of SBCF (22mg/L) combined with three major inorganic micronu-trients (CaCl2, MgSO4, and FeCl3) at different concentrations, the best modified dosages of 0.5mg/L of FeCl3, 5mg/L of MgSO4and 2mg/L CaCl2could significantly improve the microbial activity and organic removal simultaneously. © Taylor & Francis Group, LLC.
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