NEW SORBENTS BASED ON INDUSTRIAL WASTE FOR WASTEWATER TREATMENT FROM PETROLEUM PRODUCTS

Abstract

One of the most common types of ecotoxicants are petroleum products - an unidentified group of petroleum hydrocarbons and products of its processing. In this regard, the development of technology for obtaining new highly efficient and inexpensive sorbents for wastewater treatment from petroleum products (including those based on industrial waste) is an urgent problem. In this paper, a method of wastewater treatment from petroleum products using composite sorbents based on waste-tailings of Uchalinsky (SU), Buribaevsky (SB), Sibaysky (SS) mining and processing (GOK), and clay of the Talalaevsky deposit (G) and sodium humates (GN) obtained from the waste of the Tyulgan brown coal. The efficiency plants of purification was investigated using these sorbents of model wastewater contaminated with oil from the Vozeyskoye field of Usinsk Neftegaz LLC and real wastewater from the Ufa refinery of ANC Bashneft. It is shown that the efficiency of purification and the rate of adsorption of model wastewater containing petroleum products (8-50 mg/dm3) increases in a number of sorbents BAU - A < CC + G < SB ++ G < SU + G SU + G + GN (where BAU - A sorbent of comparison, activated carbon) and are maximal for GOK covered with GN. For real wastewater containing petroleum products of the Ufa refinery (3-625 mg/dm3), the adsorption activity increases in the series CC + G < SB ++ G < SU + G. Thus, the most effective sorbents for real and model wastewater containing oil and petroleum products are sorbents based on Uchalinsky GOK waste in a composition with clay (degree of purification 96.1 %), as well as SU modified GN (98.2 %).