Analysis of the efficiency of stage-by-stage treatment of rainwater and industrial wastewater during the operation of oil pipelines and petroleum products’ pipelines

Abstract

Treatment of rainwater industrial wastewater during the operation of oil pipelines and petroleum products’ pipelines is a complex technological process that involves water purification from dissolved and emulsified oil products, oil, suspended solids and other polluting components. Organizations of the Transneft system have implemented a highly efficient technology for treatment of oily effluents, which makes it possible to reduce the level of pollutants to standard values. In order to assess the efficiency of the treatment facilities, an industrial, environmental and analytical control has been organized, which is carried out at all stages of the wastewater treatment and disinfection (after each block of equipment). Also, in order to optimize the performance of this procedure, a specialized program has been developed that allows for an operational analysis of the control results, as well as a comparative analysis of data (values of pollutant concentrations and treatment efficiency) at each stage of the process. According to the measurement results, the average indicators of the concentration of pollutants at all stages of purification are calculated for the observation period. According to these indicators, graphs of their compliance with regulatory requirements and comparison graphs with the typical scheme are plotted, and based on the results obtained, a conclusion is drawn about the efficiency of the treatment facilities for the selected observation period and based on the annual results.