INVESTIGATION OF THE DESIGN OF PLANT SEDIMENT MICROBIAL FUEL CELL ON THE ELECTRICAL PARAMETERS AND THE WATER TREATMENT EFFECT FROM PETROLEUM PRODUCTS

Most applications of constructed wetlands (CW) have been designed to treat municipal or domestic wastewater but at present, constructed wetlands are successfully applied to many types of wastewater. The criteria for CW design and operation include site selection, plant selection, substrate selection, wastewater type, plant material selection, hydraulic loading rate, hydraulic retention time, water depth, operation mode and maintenance procedures. Integration of plant sediment microbial fuel cells (PSMFC) into them allows water treatment and parallel energy production. The purpose of this study is to investigate the influence of design of PSMFCs and various operation modes on electrical parameters and water treatment effect from petroleum products. The best results were achieved with downstream water flow, substrate - mixture of sediment and peat in a ratio of 3:1, use of stainless steel electrodes and the absence of a separator between aerobic and anaerobic areas. With this design and operating mode was achieved maximum power density of 10,40 mW/m2 and water purification of petroleum products of over 99% in CW with integrated PSMFC