以低分子有机物为污水处理反硝化过程碳源的研究进展

Most wastewater treatment plants effluents should be up to the A standard recently in China, and its TN should be less than 15mg/L. However, the wastewater is common in low C/N, resulting in insufficient carbon source during denitrification and influcing nitrogen removal. It is necessary to supplement external carbon source during denitrification process to ensure adequate denitrification. Researches have shown that many organic substances can be used as external carbon source during denitrification, and low molecular organic as external carbon source obtains a well denitrification effect so that more use in full-scale wastewater treatment. In this paper, the basic properties and characteristics during denitrification of the common low molecular organics methanol, ethanol, acetic acid/sodium acetate, glucose and sucrose were reviewed aiming to provide supports for the later research of theory and practical application.