Study on the Degradation of Ship Oily Sewage by Double-chamber MFC

Abstract

With the rapid development of the global shipping industry, the pollution of marine ecosystems caused by ship oily sewage is becoming increasingly severe, and the traditional single physical, chemical and biological treatment technology has problems such as high energy consumption, easy secondary pollution and insufficient degradation rate of emulsified oil in the treatment of ship oily water. Therefore, this study focuses on the application of dual-chamber microbial fuel cells (MFCs) in the field of degrading oily sewage from ships. The surface modification of carbon felt anode materials was carried out by chemical activation method, and a two-chamber MFC device was constructed to further explore the effects of different anode materials on the power production performance of MFC and the degradation effect of oily wastewater. The experimental results show that the performance of phosphoric acid-activated carbon felt is particularly outstanding, with a maximum output voltage of 676 mV, which is 25.4% higher than that of unactivated carbon felt and 52.53% higher power density. In terms of the degradation of oily wastewater, it is also significantly better than other modified materials. It has been confirmed that phosphoric acid activation can effectively improve the power generation and degradation efficiency of MFC by increasing the hydroxyl functional group on the surface of carbon felt, improving hydrophilicity and electrochemical properties, and providing a promising technical solution for the treatment of oily wastewater from ships.