Retrofitting low-performance units to abate sewer overflow pollution based on mathematical model and Sobol algorithm

作     者：Zhi-chao Zhao Xiao-min Huang Hai-long Yin Jun-bo Wen Xiao-wei Fu 

作者机构：Changjiang Institute of SurveyPlanningDesign and ResearchWuhan430010China Key Laboratory of Yangtze River Water EnvironmentMinistry of EducationTongji UniversityShanghai200092China State Key Laboratory of Pollution Control and Resource ReuseCollege of Environmental Science and EngineeringTongji UniversityShanghai200092China Hubei Provincial Engineering Research Center for Comprehensive Water Environment Treatment in the Yangtze River BasinWuhan430010China Key Laboratory of Urban Water SupplyWater Saving and Water Environment Governance in the Yangtze River Delta of Ministry of Water ResourcesShanghai200092China 

出 版 物：《Journal of Hydrodynamics》 (水动力学研究与进展B辑(英文版))

年 卷 期：2023年第35卷第4期

页      面：770-781页

核心收录：

学科分类：0202[经济学-应用经济学] 02[经济学] 020205[经济学-产业经济学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 0701[理学-数学] 0702[理学-物理学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 0801[工学-力学（可授工学、理学学位）] 

基　　金：Project supported by the National Natural Science Foundation of China(Grant No.52170103),the National Key Research and Development Program of China(Grant No.2021YFC3200703) supported by the Scientific Research Program of Changjiang Institute of Survey,Planning,Design and Research(Grant No.CX2020Z24) the China Postdoctoral Science Foundation(Grant No.2023M730366) the Natural Science Foundation of Hubei Province(Grant No.2023AFB475) the Postdoctoral Innovation and Practice Position in Hubei Province(Grant No.2023CXGW04) 

主　　题：Urban sewer system low-performance units Sobol sensitivity analysis sewer overflow optimal retrofit strategy 

摘      要：Optimal retrofit of low-performance units(LPUs)is promising to abate overflow pollutant mass loading of sewer systems during *** study presents a combination of mathematical model and Sobol algorithm to help identify LPUs of sewer systems and design retrofitting ***,the solution to minimize the overflow pollutant mass loading from sewers systems can be efficiently *** developed method was demonstrated at a catchment served by one wastewater treatment plant in the Chaohu City,Anhui Province of China,with five pumping stations and a total sewer length of 58.3 *** the catchment,there are three rivers and a small lake to receive overflows from the sewer *** them,one river that was mostly polluted was selected as the object of overflow pollution abatement during wet weather *** identifying the LPUs of the sewer system and developing retrofitting strategies using Sobol sequence,the mitigation of overflow pollution during wet weather period was *** show that the mass loading of chemical oxygen demand(COD)discharged into the target river could be reduced by 40.6%,by implementing optimal retrofit strategy of LPUs,i.e.,increasing the conveyance capacities of two pumping stations by 2.5–3.2 times and augmenting the diameters of 12 sewers by 1.25–1.29 *** further coordinate the abatement of overflow pollution and retrofit investment,Sobol sensitivity analysis was conducted to screen the dominant LPUs to update the optimal retrofit *** applying the updated strategy,the overflow COD mass loading per overflow event was close to that of non-updated strategy,while the retrofitting length of sewers was reduced by 40%.Therefore,on the basis of the presented method,decision-makers can flexibly develop retrofitting strategies of sewer system to abate overflow pollution during wet weathers in a cost-effective way.