Method for removing nitrate nitrogen in electroplating wastewater

The invention relates to a treatment method for removing high-concentration nitrate nitrogen wastewater generated in electroplating production, which comprises the following steps: the high-concentration nitrate nitrogen wastewater firstly passes through an intermediate water tank, the water quality and water quantity are adjusted, the wastewater regularly and quantitatively enters a denitrification inflow adjusting tank through a lifting pump, and a pH probe is arranged in the adjusting tank to detect the pH; if the pH is too high, a sulfuric acid dosing machine is automatically started to adjust the pH of the water to 5.5-6.5, meanwhile, a carbon source is added into a denitrification inflow adjusting tank, and the C/N ratio is maintained to be about 5: 1; after the wastewater is adjusted in the adjusting tank, the wastewater automatically flows into the inflow temporary storage tank; the effluent enters a denitrification fluidized bed system regularly and quantitatively through a water pump for denitrifica