ABSTRACT A high flocculation performance composite flocculant was prepared with sodium alginate, polyaluminium ferric chloride and cationic polyacrylamide. And the composite flocculant was used in papermaking wastewater treatment. Results indicated that it achieve the best flocculation performance when the raw material mass ratio was 2:1:1, the dosage of the composite flocculant was 20 mg/L, and the removal efficiency of COD and turbidity with this composite flocculant reached 89.6% and 99.2%, respectively.
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nullD. Zeng, D. Hu and J. Cheng, "Preparation and Study of a Composite Flocculant for Papermaking Wastewater Treatment," Journal of Environmental Protection, Vol. 2 No. 10, 2011, pp. 1370-1374. doi: 10.4236/jep.2011.210159.
 H. L.Wang, G. S. Liu, P. Li and F. Pan, “The Effect of Bioaugmentation on the Performance of Sequencing Ba- tch Reactor and Sludge Characteristics in the Treatment Process of Papermaking Wastewater,” Bioprocess and Biosystems Engineering, Vol. 29, No. 5-6, 2006, pp. 283- 289. doi:10.1007/s00449-006-0077-9
 Y. Matsushita, A. Iwatsuki and S. Yasuda, “Application of Cationic Polymer Prepared from Sulfuric Acid Lignin as a Retention Aid for Usual Rosin Sizes to Neutral Pa- permaking,” The Japan Wood Research Society, Vol. 50, No. 6, 2004, pp. 540-544.
 V. C. Srivastava, I. D. Mall and I. M. Mishra, “Treatment of Pulp and Paper Mill Wastewater with Polyaluminium Chloride and Bagasse Fly Ash,” Colloids and Surfaces A: Physicochemical and Engineering Aspects, Vol. 260, No. 1-3, 2005, pp. 17-28. doi:10.1016/j.colsurfa.2005.02.027
 X. W. Yang, Y. D. Shen and P. Z. Li, “ Intrinsic Viscosity, Surface Activity, and Flocculation of Cationic Polyacrylamide Modified with Fluorinated Acrylate,” Polymer Bulletin, Vol. 65, No. 2, 2010, pp. 111-122.
 B. R. Sharma, N. C. Dhuldhoya and U. C. Merchant, “Flo- cculants—An Ecofriendly Approach,” Journal of Poly- mers and the Environment, Vol. 14, No. 2, 2006, pp. 195- 202. doi:10.1007/s10924-006-0011-x
 T. A. Becker, D. R. Kipke and T. Brandon, “Calcium Alginate Gel: A Biocompatible and Mechanically Stable Polymer for Endovascular Embolization,” Journal of Bio- medical Materials Research, Vol. 54, No. 1, 2001, pp. 76- 86. doi:10.1002/1097-4636(200101)
 S. Martins, B. Sarmento, E. B. Souto and D. C. Ferreira, “Insulin-Loaded Alginate Microspheres for Oral Delivery- Effect of Polysaccharide Reinforcement on Physicochemi- cal Properties and Release Profile,” Carbohydrate Poly- mers, Vol. 69, No. 4, 2007, pp. 725-731.
 X. J. Huang, Y. Xiao and M. D. Lang, “Micelles/Sodium- Alginate Composite Gel Beads: A New Matrix for Oral Drug Delivery of Indomethacin,” Carbohydrate Polymers, Vol. 87, No. 1, 2012, pp. 790-798.
 L. H. Fan, X. R. Pan, Y. Zhou, L. Y. Chen, W. G. Xie, Z. H. Long and H. Zheng, “Preparation and Characterization of Crosslinked Carboxymethyl Chitosan-Oxidized So- dium Alginate Hydrogels,” Journal of Applied Polymer Science, Vol. 122, 2011, pp. 2331-2337.
 S. R. V. Tomme, G. Storm and W. E. Hennink, “In Situ Gelling Hydrogels for Pharmaceutical and Biomedical Applications,” International Journal of Pharmaceutics, Vol. 355, No. 1, 2008, pp. 1-18.
 H. X. Liu, C. Y. Wang, Q. X. Gao, X. X. Liu and Z. Tong, “Fabrication of novel Core-Shell Hybrid Alginate Hy- drogel Beads,” International Journal of Pharmaceutics, Vol. 351, No. 1, 2008, pp. 104-112.
 A. Shilpa, S. S. Agrawal and A. R. Ray, “Controlled De- livery of Drugs from Alginate Matrix,” Journal of Mac- romolecular Science Part C-Polymer Review, Vol. 43, No. 2, 2003, pp. 187-221. doi:10.1081/MC-120020160
 Y. H. Li, X. L. Li and W. H. Li, “Study on Polyalumin- ium Ferric Chloride for Treating Papermaking Wastewa- ter and Regeneration,” North Environment, China, No. 4, 2002, pp. 67-69.
 S. S. Wong, T. T. Teng, A. L. Ahmad, A. Zuhairi and G. Najafpour, “Treatment of Pulp and Paper Mill Wastewa- ter by Polyacrylamide in Polymer Induced Flocculation,” Journal of Hazardous Materials B, Vol. 135, No. 1-3, 2006, pp. 378-388. doi:10.1016/j.jhazmat.2005.11.076
 M. I. Aguilar, J. Sáez, M. Lloréns, A. Soler, J. F. Ortu?o, V. Meseguer and A. Fuentes, “Improvement of Coagula- tion-Flocculation Process Using Anionic Polyacrylamide as Coagulant Aid,” Chemosphere, Vol. 58, No. 1, 2005, pp. 47-56. doi:10.1016/j.chemosphere.2004.09.008
 N. Carlos, M. S. Luis and F. Elena, “Polyacrylamide Induced Floccluation of a Cement Ssuspension,” Chemical Engineering Science, Vol. 61, No. 8, 2006, pp. 2522-2532.
 J. Nan, W. P. He, J. J. Song and G. B. Li, “Characteristics of the Dynamic Distribution of Suspended Particles in the Flocculation Process,” Journal of Zhejiang University Science A, Vol. 10, No. 9, 2009, pp. 1350-1358.
 M. A. A. Razali, Z. Ahmad, M. S. B. Ahmad and A. Arif- fin, “Treatment of Pulp and Paper Mill Wastewater with Various Molecular Weight of PolyDADMAC Induced Flo- cculation,” Chemical Engineering Journal, Vol. 166, No. 2, 2011, pp. 529-535. doi:10.1016/j.ces.2010.11.011
 P. Peng and G. Garnier, “Effect of Cationic Polyacryla- mide Adsorption Kinetics and Lonic Strength on Precipi- tated Calcium Carbonate Flocculation,” Langmuir, Vol. 26, No. 22, 2010, pp. 16949-16957.
 Z. Liang and Y. X. Wang, “Pretreatment of Diosgenin Wastewater Using Polyferric Sulfate and Cationic Polya- crylamide,” Journal of Earth Science, Vol. 21, No. 3, 2010, pp. 340-360. doi:10.1007/s12583-010-0097-x