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.
Highlights
High-Viscosity Oil is abundant in China and has an annual output of more than 30 million ton
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
After investigating the monitoring data in Liaohe Petrochemical Corporation, we found that the pH value of wastewater was in the range of 5~10, and its stirring time oil content oil content
Summary
High-Viscosity Oil is abundant in China and has an annual output of more than 30 million ton. It makes an essential role in the petrolic exploration and development. High-Viscosity Oil will generate a large number of mining liquid which is consisted of crude oil, silt and water. How to disposal such kind of wastewater becomes the important factor which restricts the development of High-Viscosity Oil Refining. Researches on the treatment of High-Viscosity Oil Refining wastewater have essential theoretical and practical significance. There are many kinds of methods to treat High-Viscosity Oil Refining wastewater, such as physical methods, physical-chemistry methods, biochemistry methods [2,3,4] and so on. Silicon polymers have caused widespread concern [5,6,7], due to the new flocculants with high-strength polymer capacity in the physical and chemical processing
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