A Comparative Study Of Two Kinds Of Double Chamber Microbial Fuel Cell Technology In The Treatment Of Two Kinds Of Waste Water

Microbial fuel cell (Microbial Fuel Cell, referred to as MFC) can take electro microorganism as catalyst, Directly converts the chemical energy into electrical energy, that is to say that it is a kind of device can be simultaneously oxidation decomposition of organic compounds can also be generated current, it is a product of combination and development of microbial and battery technology. MFC has multiple functions of seawater desalination, wastewater treatment and production capacity of power generation, and its high efficiency, environmental protection, mild characteristic has far-reaching significance in practical application of the future. In a large number of MFC treatment of wastewater, MFC processing a variety of wastewater, including dye wastewater, brewery wastewater, molasses wastewater, domestic sewage, electroplating wastewater etc. Among them, the molasses wastewater has the characteristics of high concentration and high organic content, can be used for MFC substrate of anode, it can be used as anode electron donor help electricigens to produce electricity; Electroplating wastewater because of its containing heavy metal ions, which has strong oxidation and high redox potential characteristics, can be used for MFC cathode liquid, can be used as cathode electron acceptor to help complete the redox reaction, reduction of metals. Therefore, this study will use respectively in molasses wastewater and electroplating wastewater as anode and cathode, inspect the battery performance, the sewage treatment effect, and the practical application, it is of great value and significance to the practical application of the MFC and the progress of science.This research adopts the two room MFC device as the research object, In order to based on the original and traditional process on the further study of MFC practical significance, at the same time improve the battery electricity production, experiments using traditional intermittent double room MFC process and continuous flow double room MFC coupling technology to research and comparison of the two systems, by using anaerobic microorganisms as anodic biocatalyst, using simulated molasses wastewater as experimental anode solution, using simulated electroplating wastewater as the experimental cathode liquid. The first experiment using the traditional intermittent double room MFC process processing two kinds of waste water (molasses wastewater and electroplating wastewater), and to evaluate the electricity production, wastewater treatment, metal ion recovery, as well as the application of two kinds of waste water in the traditional dual chamber MFC feasibility etc.. In order to further scale-up experiment, improving the battery performance, efficiency and application, the experiment began using a continuous flow MFC coupling technology inspect battery performance. Finally, comparative analysis of two kinds of system performance, analysis the advantages and problems of the system.Conclusion:traditional intermittent double room MFC process in the treatment of two kinds of waste water, the electricity production and all aspects of performance are very good, the feasibility of application of two kinds of waste water in a dual chamber MFC is very high. The highest production of electricity for 306 hours, the maximum voltage can reach 339.6mV, the maximum power density is 23.92 mW·m-2, COD removal rate reached 72%. The highest voltage and power density of Continuous flow MFC coupling technology is 340 mV and 58.65 mW·m-2, COD removal rate can reach 81%. The electricity production, wastewater treatment in continuous flow double room MFC coupling process are better than traditional intermittent double chamber of MFC, while the traditional intermittent double chamber of MFC process in the starting period of performance, power density and heavy metal ion recovery better than continuous double chamber MFC coupling technology, continuous flow double room MFC coupling technology supplies quantity, high cost, and difficult to use for practical applicationsResearch shows that, by using two kinds of MFC system to treat organic wastewater and electroplating wastewater, simulate organic molasses wastewater as electron donor, heavy metal ions as electron acceptor, this battery system has feasibility of establishing.