Study on Enhanced Microbial Degradation of Petroleum Hydrocarbons in Ship Oily Wastewater by Electric Power

Abstract

Modern ship oily wastewater often presents a complex and ever-changing trend, and single technology treatment generally has some technical defects that are often difficult to achieve the expected treatment effect. Therefore, it is necessary to combine multiple technology treatments to compensate for the technical defects of single technology treatment and effectively improve the treatment rate and efficiency. This article aims to explore the combination of microbial technology and electric power technology to improve the efficiency of microbial degradation of petroleum hydrocarbons, thereby accelerating the treatment of oily wastewater from ships. This article analyzes the effect of electrode material, electrode arrangement method, and electric field intensity on the removal rate of petroleum hydrocarbons from ship oily wastewater treated by microbial communities through experiments. Taking into account economic considerations, it is proven that graphite electrode, electrode hexagonal arrangement method, and electric field intensity of 1 V/cm are the optimal conditions. The removal efficiency of petroleum hydrocarbons from oily wastewater in seven days reaches 81.09%.