Research on Improving the Nitrogen Removal Effect of a Sewage Plant
With the rapid development of China's science and technology and economy,environmental pollution has become an increasingly prominent and serious problem.In 2015,the state issued the Action Plan for the Prevention and Control of Water Pollution,which requires the effluent quality of urban sewage treatment plants in key river basins and regions to meet the first-class A standard of the Urban Sewage Treatment Plant Pollutant Discharge Standard(GB18918-2002).Strict standards pose a challenge to the removal efficiency of urban sewage treatment plants,and the specific analysis of the transformation of pollutants in sewage treatment plants,the removal process is conducive to the further optimization of sewage treatment plant processes,nitrogen as an important indicator of environmental quality evaluation,its removal efficiency in sewage treatment plants has always been a very concerned issue in the industry[1].At present,the treatment process commonly used in China's urban domestic sewage is activated sludge method,for most urban sewage treatment plants,TN is the main factor restricting the stability of most urban sewage treatment plants to reach the first-class A standard.This paper combines the different characteristics of A/O process and A2/O process,and mainly introduces how to improve the nitrogen removal efficiency by controlling different internal and external reflux ratios during the operation process under this case,which has certain reference significance for similar projects.
万方数据
维普
