The invention discloses an interactive type three-chamber biological fuel
cell device and a method for denitriding
wastewater by using the device, belongs to the
sewage biological remediation and in particular relates to a
denitrification treatment method applicable to
wastewater containing
nitrate nitrogen. By adopting the method,
nitrate instead of
oxygen is taken as an
electron acceptor of a negative
electrode on the basis of a conventional two-chamber biological fuel
cell, and a three-chamber biological fuel
cell consisting of a middle positive
electrode chamber and two side negative
electrode chambers is built; meanwhile, the conditions of switching on and off a middle positive electrode and two side negative electrodes are controlled interactively through a
control switch, so that an electrode
denitrification process and a non-electrode
denitrification process of the negative electrode are reasonably matched to process. The method is capable of sustainably generating current and effectively removing
nitrate nitrogen and saving an organic
carbon source needed for denitrification; the method is a novel
sewage treatment method based on
energy conservation and consumption reduction and is good in application prospect.