The technology and research on affecting factors of simultaneous nitrification and denitrification

The paper introduces a new efficient technology of simultaneous nitrification and denitrification(SND).It introduces the development progress,the mechanism of simultaneous nitrification and denitrification from microenvironment theory and biology theory.According to the latest research,the paper expounds the influential factors of SND.Opposing the nitrification technology combining with nitrifying synchrony in reality,suggest that the present nitrification opposes a nitrification still waiting for studying the problem solving.