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

By Yindi FAN, Xinyang XU and Xi CHEN

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

Topics: Polymer Silicate Phosphate Ferric Sulfate, Flocculant, Preparation, High-Viscosity Oil Refining Wastewater, LCC:Environmental technology. Sanitary engineering, LCC:TD1-1066, LCC:Technology, LCC:T, DOAJ:Environmental Technology, DOAJ:Technology and Engineering
Publisher: Scientific Research Publishing
Year: 2009
DOI identifier: 10.4236/jwarp.2009.13024
OAI identifier: oai:doaj.org/article:02ff2ee7d1df4929b0c9f305dbaab6a0
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