Study on Performance of Coagulated Particles in Heavy Oil Sewage Treatment by Air Flotation

Abstract:

In order to ensure the efficient separation of solid particles in heavy oil sewage by air flotation technology, in this paper, the flotation performance and mechanism of coagulated particles are studied in terms of contact angle, light transmittance and Zeta potential by changing pH, inorganic flocculants, organic flocculants and reagent dosage in the process of flotation. The results show that stage of air flotation could be benefited by increasing light transmittance, zeta potential of sewage, and contact angle of coagulated particles during the coagulation stage. When pH of sewage is 6.5, dosage of PAC and anionic PAM (molecular weight: 10 million) is 150 mg/L and 0.5 mg/L, respectively, an optimum coagulation effect as well as the treatment effect could be achieved.

• Periodical: Materials Science Forum (Volume 971)
• Pages: 121-126
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.971.121
• Online since: September 2019
• Authors: Bo Yang*, Yuan Dong Peng, Gang Xie, Cheng Tun Qu
• Keywords: Air Flotation, Coagulation, Contact Angle, Heavy Oil Sewage

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