TREATMENT EFFICIENCY ASSESSMENT FOR WASTEWATER WITH A HIGH CONTENT OF ORGANIC COMPOUNDS USING GREEN PLANTS AND AN ADVANCED OXIDATION PROCESS

An efficient wastewater treatment is one of the key points in the environmental protection both due to growing amounts of wastewater and associated biological risks. Wastewater treatment is a complex and time-consuming process; however, despite a significant number of studies in this area, the problem of maximizing wastewater treatment has not been fully resolved yet. For the best wastewater treatment, researchers often experiment with the combined use of different treatment methods, but a highly efficient treatment of petroleum-containing wastewater is still an urgent task. One of the most efficient and safe ways to treat wastewater is phytoremediation involving the use of green plants to absorb various pollutants. Oxidation using hydroxyl radicals, which are involved in the natural processes of water self-purification, is a promising solution for treatment of wastewater with a high content of organic compounds, including petroleum-containing effluents. Wastewater treatment is a complex and time-consuming process; however, despite a significant number of studies in this area, the problem of maximizing wastewater treatment In this paper, we suggest a two-stage technology for treatment of wastewater with a high content of organic compounds using green plants and oxidation process. For the first stage, we have analyzed the phytoremediation method and selected the most effective plants in the treatment of wastewater under consideration. For the second stage, we have analyzed the Fenton's process, based on which we have selected the optimal ratio and concentration of oxidizer and catalyst. We have assessed the wastewater treatment efficiency using the suggested two-stage treatment technology in terms of the chemical oxygen demand (COD), which was 83.9 %.