In this study,the activated sludge model implemented in the BioWin software was validated against full-scale wastewater treatment plant data. Only two stoichiometric parameters(Y p /acetic and the heterotrophic yield(...In this study,the activated sludge model implemented in the BioWin software was validated against full-scale wastewater treatment plant data. Only two stoichiometric parameters(Y p /acetic and the heterotrophic yield(Y H)) required calibration. The value 0.42 was used for Yp /acetic in this study,while the default value of the BioWin software is 0.49,making it comparable with the default values of the corresponding parameter(yield of phosphorus release to substrate uptake(YPO4)) used in ASM2,ASM2 d,and ASM3 P,respectively. Three scenarios were evaluated to improve the performance of the wastewater treatment plant,the possibility of wasting sludge from either the aeration tank or the secondary clarifier,the construction of a new oxidation ditch,and the construction of an equalization tank. The results suggest that construction of a new oxidation ditch or an equalization tank for the wastewater treatment plant is not necessary. However,sludge should be wasted from the aeration tank during wet weather to reduce the solids loading of the clarifiers and avoid effluent violations. Therefore,it is recommended that the design of wastewater treatment plants(WWTPs) should include flexibility to operate the plants in various modes. This is helpful in selection of the appropriate operating mode when necessary,resulting in substantial reductions in operating costs.展开更多
体验式教学让学生在自主体验和探究的过程中掌握理论和方法,培养思维能力,且享受解决问题和发现现象规律的成就感。本文基于《管理运筹学》配套软件QM for Windows的体验式教学实践,并通过问卷调查的统计分析,探索研究软件实操体验式教...体验式教学让学生在自主体验和探究的过程中掌握理论和方法,培养思维能力,且享受解决问题和发现现象规律的成就感。本文基于《管理运筹学》配套软件QM for Windows的体验式教学实践,并通过问卷调查的统计分析,探索研究软件实操体验式教学对于提高工商管理类学生定量类课程学习兴趣和效果的影响。发现体验式教学可以提高学生学习兴趣和学习效果:学生体验式教学参与积极性越高,自主体验和探索学习花费的时间越多,学习兴趣和学习效果越明显。展开更多
基金Supported by the College of Scientific Innovation Significant Cultivation Fund Financing Projects(No.708047)the Key Special Program for Pollution Control(No.2012ZX07101-003)
文摘In this study,the activated sludge model implemented in the BioWin software was validated against full-scale wastewater treatment plant data. Only two stoichiometric parameters(Y p /acetic and the heterotrophic yield(Y H)) required calibration. The value 0.42 was used for Yp /acetic in this study,while the default value of the BioWin software is 0.49,making it comparable with the default values of the corresponding parameter(yield of phosphorus release to substrate uptake(YPO4)) used in ASM2,ASM2 d,and ASM3 P,respectively. Three scenarios were evaluated to improve the performance of the wastewater treatment plant,the possibility of wasting sludge from either the aeration tank or the secondary clarifier,the construction of a new oxidation ditch,and the construction of an equalization tank. The results suggest that construction of a new oxidation ditch or an equalization tank for the wastewater treatment plant is not necessary. However,sludge should be wasted from the aeration tank during wet weather to reduce the solids loading of the clarifiers and avoid effluent violations. Therefore,it is recommended that the design of wastewater treatment plants(WWTPs) should include flexibility to operate the plants in various modes. This is helpful in selection of the appropriate operating mode when necessary,resulting in substantial reductions in operating costs.
基金浙江省教育技术研究规划课题重点项目“基于《管理运筹学》配套软件QM for Windows体验式教学的管理类定量课程教改研究”(项目编号JA007)的研究成果
文摘体验式教学让学生在自主体验和探究的过程中掌握理论和方法,培养思维能力,且享受解决问题和发现现象规律的成就感。本文基于《管理运筹学》配套软件QM for Windows的体验式教学实践,并通过问卷调查的统计分析,探索研究软件实操体验式教学对于提高工商管理类学生定量类课程学习兴趣和效果的影响。发现体验式教学可以提高学生学习兴趣和学习效果:学生体验式教学参与积极性越高,自主体验和探索学习花费的时间越多,学习兴趣和学习效果越明显。
