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B. Y. Gao, H. H. Hahn, and E. Hoffmann. “Evaluation of aluminum-silicate polymer composite as a coagulant for water treatment,” Water Research, Vol. 36, No. 14, pp. 3573–3581, 2002.

has been cited by the following article:

  • TITLE: Preparation and Application of Polymer Silicate Phosphate Ferric Sulfate Used in High-Viscosity Oil Refining Wastewater Treatment

    AUTHORS: Xi CHEN, Xinyang XU, Yindi FAN

    KEYWORDS: Polymer Silicate Phosphate Ferric Sulfate, Flocculant, Preparation, High-Viscosity Oil Refining Wastewater

    JOURNAL NAME: Journal of Water Resource and Protection, Vol.1 No.3, September 21, 2009

    ABSTRACT: A new kind of flocculants, named Polymer Silicate Phosphate Ferric Sulfate(PSPFS), was synthesized by ferrous sulfate used as the main material and activated silicic acid as additive. In this paper, High-Viscosity Oil Refining wastewater from Liaohe Petrochemical Corporation was the treatment object. Overall, the in-fluencing factors and synthesis technology conditions of PSPFS were determined by experiments. First of all, the conditions of influencing factors were showed as follows: the mass percent concentration of ferrous sulfate 55%,concentration of sodium silicate 15% , the molar ratio of ferrous sulfate and hydrogen peroxide 1.2:1, oxidation temperature 40 degree Celsius, oxidation time 4 hours, polymerization temperature 60 de-gree Celsius and polymerization time 2 hours. Secondly, the optimal ratios of components were determined by uniform design method. The molar ratio of Fe/Si is 5.0:1, Fe/H2SO4 is 3.2:1, and Fe/P is 18.0:1. At last, the optimal experimental condition was determined as follows: the dosing quantity 200mg/L, pH value 5.5~9, temperature 25~45℃, stirring time 2 min, and standing time 3 min, according to the result of floc-culation experiments with PSPFS. Besides, the result of the comparative experiments showed that the effi-ciency of PSPFS was much better than the reference flocculants.