Find in Library

The effects of the addition of a certain concentration of Fe2+ on the activity of anammox bacteria in the system at neutral low temperature were investigated by detecting the contents of nitrate, conductance values and protein in the system. The results showed that when the temperature was set at 15°C and the concentration of Fe2+ was 0.16 mmol/L, the system operated in the best condition. After 60h, the denitration rate increased by 40%, the electrical conductivity value decreased the fastest, and the protein content increased by 24.5 mg/g compared with the control group. Zero valent iron has been widely concerned as a reducing agent for the treatment of nitrate wastewater, but the treatment efficacy is severely affected by temperature. The addition of anammox bacteria coupled with Fe0 can not only mutually promote the reaction activity to adapt to more non ideal environments but also reduce the secondary pollution, which provides a new idea for the practical application of nitrate wastewater treatment.