【摘要】 针对磷污染较为严重的问题,以城市污水为研究对象,选取UNITANK工艺,考察了不同阶段运行时间的设置、水力停留时间、主曝区溶解氧浓度和泥龄条件下,该工艺的除磷效能、降解机理及得到的除磷最佳工艺参数。并结合生物除磷机理,分析了UNITANK工艺除磷不理想的可能原因及今后研究中强化除磷的若干措施。更多还原

【Abstract】 Taking urban sewage as the object of study and aiming at phosphoric pollution,investigations are carried out under different conditions of step operational time,hydraulic detention time,dissolved oxygen concentration and sludge age in main aeration area on dephosphorizing effect and degradation mechanism of UNITANK process,together with the optimum dephosphorizing process parameters got from tests.Besides,analysis on the cause of unsatisfactory dephosphorizing results with UNITANK process according to biological dephosphorization mechanism is also made,as well as some measures to be taken to strengthen dephosphorization in future study.更多还原