【摘要】 物理性能和生物活性是活性污泥法中两个重要的关注方面,为解决运行控制中这两方面的矛盾,对不同活性污泥系统中的污泥物理结构和呼吸过程进行分析.利用7个不同活性污泥系统中的污泥,对其粒径、分形维数、压缩沉降性能、吸附性能和呼吸图谱等方面进行研究分析.结果表明,物理性能指标和呼吸速率之间存在较好的相关关系,其中污泥粒径（d）与内源比呼吸速率（SOUR_e）和最大比呼吸速率（SOUR_t）呈指数负相关（R²>0.9）;分形维数（D_f）与SOUR_e和SOUR_t呈线性负相关（R²>0.8）;压缩指数（SCI）和污泥指数（SVI）与SOUR²_e呈对数正相关（R>0.9）;平衡吸附量(Q_max)与准内源比呼吸速率（SOUR_q）和SOUR_e呈线性负相关（R²>0.9）.从而得出活性污泥正常运行条件下的最佳物理性能和活性范围:SVI为50～120 mL·g^-1,SOUR_e为6.27～7.55 mg·（g·h）^-1,d为205.80～228.12μm,D_f为1.56～1.60,R_n/t为0.02～0.03,Q_max为508～636 mg·g^-1.更多还原

【Abstract】 Physical properties and bioactivity are two important aspects of the activated sludge process.To solve the contradiction between these two aspects in the operation control process,the physical structure and respiration processes of sludge in different activated sludge systems were analyzed.Sludge from seven different activated sludge systems was used for the experiments,and the particle size,microscopic morphology,fractal dimension,compression settling performance,adsorption performance,and respirogram were studied and analyzed.The results showed that the correlations between physical performance indicators and respiration rate were very good.Sludge particle size（d） was negatively correlated with the endogenous specific respiration rate（SOUR_e） and maximum specific respiration rate（SOUR_t）（R²>0.9）;fractal dimension（D_f） was linearly and negatively correlated with SOUR_e and SOUR_t（R²>0.8）;sludge compression index（SCI） and sludge volume index（SVI） were positively correlated with SOUR_e（R²>0.9）;equilibrium adsorption(Q_max) was linearly and negatively correlated with the quasi-endogenous specific respiration rate（SOUR_q） and SOUR_e（R²>0.9）.In addition,the optimal physical properties and bioactivity range of activated sludge under normal operating conditions were obtained as follows:SVI of 50-120 mL·g^-1,SOUR_e of 6.27-7.55 mg·（g·h）^-1,d of 205.80-228.12μm,D_f of1.56-1.60,R_n/t of 0.02-0.03,and Q_max of 508-636 mg·g^-1.更多还原