Step Feed Multistage A/O Process For Nitrogen And Phosphorus Removal And Its Application

In the recent years, as the national industrial market starts expanding and at the sametime while the national economy is growing up, the matter of sewage treatment isbecoming severe. Especially in the field of nitrogen and Phosphorus and other nutrition. Asthe chemicals are directly discharged into the natural watercourse without any treatments,which breaks down the balance of the natural watercourse. Due to the above problems withthe nutrition brought,The scholars research on sewage treatment technologies fleetly. In thefield of sewage treatment technology, Step feed multistage A/O process of is a newtechnology,it deal with the Nitrogen and Phosphorus effectively,with smaller facilitate andoperation management more easy.Above all,this process has broad prospects. The maincontent of this paper,researching the step feed multistage A/O process, it combined with thestatus quo of urban sewage water in Tianjin, inspection the result of process for wastewaternitrogen and phosphorus removal,with the testing system of step feed multistage A/Oprocess,then it analysis of the test results, using the drawing tools of Origin to list the majorpollutants such as nitrogen and phosphorus, combined with graphical data on a systematicanalysis of the test results. It exampled the sewage treatment plant of Zhangguizhuang inTianjin as engineering application, comprehensively verifying the reliability of the testresults.This paper contents: Comprehensive analysis on the influent parameters of step feedmultistage A/O process, and the process parameters were calculated through a combinationof qualitative and quantitative methods; Comprehensive comparative analysis on the resultof denitrification and phosphorus removal, concluding the different results of step feedmultistage A/O process on denitrification and phosphorus removal; Exampled the sewagetreatment plant of Zhangguizhuangin in Tianjin as engineering application, comprehensivedemonstrating the reliability of nitrogen and phosphorus removal of step feed multistageA/O process.The research results show that subsection water multistage A/O process indenitrification and dephosphorization has obvious advantages, especially the effect ofnitrogen,the promotion of this process is beneficial to enhance the level of our countrysewage treatment.