Research Progress of Artifical Wetland Sewage System to Remove Nitrogen at Low Temperature

The operation of artificial wetland is influenced by multiple factors,especially the influence of temperature,so the artificial wetland technology is influenced by seasons. The operation efficiency of artificial wetland in winter falls,especially for the N and P pollutants,which limits its popularization and application in low temperature condition. In this paper,based on application situation of artificial wetland technology in low temperature area at home and abroad,the influence of low temperature environment on nitrogen removal effect of artificial wetland was analyzed,strengthening measures to raise denitrification efficiency of artificial wetland were summarized.