The unified dynamic theory reveals the substrate-based nonlinear growth phenomena.It means that the environment of high organism concentration and low substrate state is useful for the growth of weak floras.With ecolo...The unified dynamic theory reveals the substrate-based nonlinear growth phenomena.It means that the environment of high organism concentration and low substrate state is useful for the growth of weak floras.With ecological superior nitrification denitrification(ECOSUNIDE) technology,high sludge concentration by distributing influent to anaerobic and anoxic zones is carried out,and the ecological superiorities of nitrifiers,denitrifiers,and phosphate accumulating organisms(PAOs) get to be promoted.One of the anaerobic/anoxic/oxic(A/A/O) treatment lines of a sewage treatment plant with ECOSUNIDE technology for further investigation on the nutrient removal efficiency is reformed.The advantages of ECOSUNIDE,such as high efficiency and saving energy,are well demonstrated,even under the condition of low temperature(about 15℃) and carbon-resource(C/N ratio lower than 2.5).In ECOSUNIDE system,the effluent indexes as biochemical oxygen demand(BOD),chemical oxygen demand(COD),and NH3-N reach the ClassⅠ-A criteria specified in Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant(GB18918-2002),and suspended substance(SS),total nitrogen(TN),and total phosphorus(TP) meet the ClassⅠ-B criteria.While the effluent qualities of A/A/O system only reach the secondary discharge standard.Through the comparison on the sludge character of ECOSUNIDE system with A/A/O,more abundant biofacies,darker and more intense zoogloea,more obvious filamentous bacterium,and clearer flocs edges in ECOSUNIDE system are found.展开更多
基金Key Extension Program on Scientific and Technological Achievements of China (No. 2004EC000132) Technology Fund of China University of Mining and Technology,China (No. 0P080307)
文摘The unified dynamic theory reveals the substrate-based nonlinear growth phenomena.It means that the environment of high organism concentration and low substrate state is useful for the growth of weak floras.With ecological superior nitrification denitrification(ECOSUNIDE) technology,high sludge concentration by distributing influent to anaerobic and anoxic zones is carried out,and the ecological superiorities of nitrifiers,denitrifiers,and phosphate accumulating organisms(PAOs) get to be promoted.One of the anaerobic/anoxic/oxic(A/A/O) treatment lines of a sewage treatment plant with ECOSUNIDE technology for further investigation on the nutrient removal efficiency is reformed.The advantages of ECOSUNIDE,such as high efficiency and saving energy,are well demonstrated,even under the condition of low temperature(about 15℃) and carbon-resource(C/N ratio lower than 2.5).In ECOSUNIDE system,the effluent indexes as biochemical oxygen demand(BOD),chemical oxygen demand(COD),and NH3-N reach the ClassⅠ-A criteria specified in Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant(GB18918-2002),and suspended substance(SS),total nitrogen(TN),and total phosphorus(TP) meet the ClassⅠ-B criteria.While the effluent qualities of A/A/O system only reach the secondary discharge standard.Through the comparison on the sludge character of ECOSUNIDE system with A/A/O,more abundant biofacies,darker and more intense zoogloea,more obvious filamentous bacterium,and clearer flocs edges in ECOSUNIDE system are found.
