CAJ | 학술논문

建立了下水道水质转化概念模型,以ASM3(活性污泥3号模型)为基础开发了下水道污水水质数学模型,通过模拟试验,运用遗传算法和曲线拟合技术进行了模型率定与参数估值.模型经现场试验验证可较好地模拟下水道中的ρ(DO)与ρ(TOC)的变化.应用该模型进行数值模拟,探讨了初始ρ(DO)和水力停留时间(HRT)等可控因素对下水道中微生物作用及有机质降解的影响.结果表明,在下水道中设置曝气点,可提高污水的ρ(DO),能有效地提高微生物增殖速率,强化有机物的生化降解能力.
건립료하수도수질전화개념모형,이ASM3(활성오니3호모형)위기출개발료하수도오수수질수학모형,통과모의시험,운용유전산법화곡선의합기술진행료모형솔정여삼수고치.모형경현장시험험증가교호지모의하수도중적ρ(DO)여ρ(TOC)적변화.응용해모형진행수치모의,탐토료초시ρ(DO)화수력정류시간(HRT)등가공인소대하수도중미생물작용급유궤질강해적영향.결과표명,재하수도중설치폭기점,가제고오수적ρ(DO),능유효지제고미생물증식속솔,강화유궤물적생화강해능력.
A conceptual model was developed to simulate sewage transformation according to the conditions of municipal sewers.The mathematical sewer model was built based on ASM3 (Activated Sludge Model No.3).Model calibration and parameter estimation was performed by a curve fitting technique and genetic algorithm with the data obtained in lab experiments.The calibrated model was then validated with the data obtained in in-situ experiments,and the results showed that the model well predicted the variations of dissolved oxygen and total organic carbon concentrations along the sewer.To investigate the effects of controllable factors,hydraulic retention time,initial dissolved oxygen concentration,etc,on organism biodegradation in the sewer,model simulations were also conducted.The results revealed that air injection could be an effective measure to enhance the dissolved oxygen concentration and the proliferation rate of microorganisms,therefore intensifying the biodegradation efficiency of organic matter in the sewer.