ECOLOGY OF WATER RESOURCES AND PHYSICAL AND ELECTROMECHANICAL WASTEWATER TREATMENT IN OIL AND GAS SECTOR

V.L. Chelyadyn, M.M. Bohuslavets, L.I. Chelyadyn, O.A. Petryshak

Abstract


In 2016 the amount of insufficiently treated water emitted into the water pools in Ukraine constituted 2500-2625 mln m3, in particular in Ivano-Frankivsk region it was aproximately 85.5 mln m3, confirms the absence or insufficient capacity of existing treatment facilities and their poor performance. The analysis of the main methods of wastewater treatment and treatment facilities showed that ground open tanks and biological treatment, which is energy intensive, are used mostly often. Such treatment facilities occupy large areas and have low degree of purification from suspended – 55-65 % and 45-55 % of oil that considerably affect water and atmosphere pollution. In the course of the research wastewater treatment was conducted using a physic-electrochemical method. Research was conducted at the first stage for this technology. Wastewater was pumped from raw material container in electrical apparatus for the previous electro treatment where in drains take place an electrochemical processes by an electric current within 1.5 hour in an amount of 30 dm3, and then waste water was purified from suspended and oil in a horizontal tank with inclined planes, that changed inclination starting from 30 degrees, then 45 degrees, and up to 60 degrees. In the second stage of the research drains entered the second electric vehicle, where under the influence of an electric current (U = 8-12V) in drains electrochemical purification from soluble contaminants occurred. From electric device drains flow through the filter filled with filter material (zeolite clinoptilolite) where waste water is separated from other impurities in the filtration and adsorption and then purified water comes into a clean water container. Research of purification process was performed in dynamic conditions. As a result electro treatment of wastewater in the process of purification increases the cleaning of oil from 55.1-65.6 % to 89.1-99.2 %, and of suspended from 58.9-63.0 % to 89.9-98.2 %, which reduces pollutants emission into the environment and increases the environmental safety of the facility. Consequently, the proposed technology of drains treatment is proved to be efficient and covers a small area, so after more research it can be used to clean effluent contamination in other towns in areas remote from sites.

Keywords


pollution of water resources; technology; equipment; thin-layer tank; electrochemical cleaning; the degree of separation

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DOI: https://doi.org/10.15421/40270431

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