Colloidal properties of oil-contaminated sewage and its treatment
https://doi.org/10.31675/1607-1859-2022-24-4-165-176
Abstract
Oil refineries and other industrial enterprises generate a large amount of sewage contaminated with petroleum products. Sewage must be treated before it can be discharged into a water body. Sewage treatment methods often do not allow reducing the content of petroleum products to the maximum allowable values. This is because sewage is a microheterogenous system characterized by variable composition and high stability. It is thus important to study factors affecting the high aggregate stability of sewage as well as the development of theoretical foundations for optimizing sewage treatment. The paper presents the study of properties of multicomponent colloidal emulsion systems, factors affecting their high aggregative stability and develops theoretical foundations for optimizing sewage treatment. The systems simulating industrial effluents according to the basic chemical composition obtained by the dispersion method are studied herein. Research also includes the kinetics of precipitation of petroleum products from sewage, sewage treatment parameters during the intensive mixing of the emulsion with air. The express-method determination is used for the petroleum product content in emulsions. The regression analysis is used for the dependence of the optical density on the content of petroleum products. It is found that 10-6 µm particle removal continues for 20 min, which corresponds to the rapid coagulation. The stability of clean-contamined emulsions decreases by about 10 times with increasing barbotage speed to 30 l/h. The latter being 10 l/h, is sufficient when using Ca(OH)2
About the Author
E. V. Vorobyeva
Moscow Polytechnic University
Russian Federation
Russian Federation
Elena V. Vorobyeva, PhD, A/Professor,
Ryazan Institute (Branch)
390000
26/53, Pravo-Lybedskaya Str.
Ryazan
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Review
For citations:
Vorobyeva E.V. Colloidal properties of oil-contaminated sewage and its treatment. Vestnik Tomskogo gosudarstvennogo arkhitekturno-stroitel'nogo universiteta. JOURNAL of Construction and Architecture. 2022;24(4):165-176. (In Russ.) https://doi.org/10.31675/1607-1859-2022-24-4-165-176
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