CAJ | 학술논문

利用双水解模型对活性污泥数学模型(ASM)进行改进,并通过呼吸计量试验和非线性最优化算法建立了异养菌动力学参数的优化估计方案.该方案在上海2个污水处理厂的测定结果表明,经优化求解后,ASM改进模型能够准确模拟批式试验的耗氧速率曲线,26℃下,曲阳厂和白龙港厂活性污泥的异养菌衰减系数分别为0.58,0.55d~(-1),异养菌最大比增长速率常数(均约为4d~(-1))和半饱和常数(2.00,2.36mg/L)较为接近.白龙港厂进水中慢速可生物降解有机物的水解速率明显高于曲阳厂,这是由于长距离管道输送显著降低水解组分的粒径所致.
이용쌍수해모형대활성오니수학모형(ASM)진행개진,병통과호흡계량시험화비선성최우화산법건립료이양균동역학삼수적우화고계방안.해방안재상해2개오수처리엄적측정결과표명,경우화구해후,ASM개진모형능구준학모의비식시험적모양속솔곡선,26℃하,곡양엄화백룡항엄활성오니적이양균쇠감계수분별위0.58,0.55d~(-1),이양균최대비증장속솔상수(균약위4d~(-1))화반포화상수(2.00,2.36mg/L)교위접근.백룡항엄진수중만속가생물강해유궤물적수해속솔명현고우곡양엄,저시유우장거리관도수송현저강저수해조분적립경소치.
Based on activated sludge models (ASM) modified by dual hydrolysis mechanism,kinetic parameters for heterotrophic biomass were estimated by nonlinear optimization algorithm in combination with batch respirometric tests.Parameter estimation results of two wastewater treatment plants (WWTP) in Shanghai showed that,the modified model after optimization provided the best model fit with the experimentally determined oxygen uptake rate profiles.At 26℃,the heterotrophic decay rates for activated sludge from Quyang WWTP and Bailonggang WWTP were respectively 0.58,0.55 d~(-1),and similar maximum specific growth rate (both about 4 d~(-1)) and half-saturation constant (2.00,2.36 mg/L) were obtained.The hydrolysis rate of slowly biodegradable organics in wastewater from the Bailonggang WWTP was significantly higher than that of the Quyang WWTP,which was mainly attributed to its smaller particles after longpipeline transportation.