Effects of hydraulic retention time on net present value and performance in a membrane bioreactor treating antibiotic production wastewater
作者机构：State Key Joint Laboratory of Environmental Simulation and Pollution ControlResearch Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China Department of Water Pollution Control TechnologyResearch Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of SciencesBeijing 100049China
出 版 物：《Frontiers of Environmental Science & Engineering》 (环境科学与工程前沿（英文）)
年 卷 期：2020年第14卷第6期
页 面：109-121页
核心收录：
学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学]
基 金：This work was supported by the National Key Research and Development Program of China(No.2016YFD0501405) National Natural Science Foundation of China(Grant No.21677161) Major Science&Technology Program for Water Pollution Control and Treatment of China(Nos.2017ZX07102-002 and 2018ZX07105-001).
主 题：Antibiotic production wastewater Net present value Membrane bioreactor Hydraulic retention time Pollutant removal
摘 要：A cost sensitivity analysis was performed for an industrial membrane bioreactor to quantify the effects of hydraulic retention times and related operational parameters on cost.Different hydraulic retention times(72-24 h)were subjected to a flat-sheet membrane bioreactor updated from an existing 72 h oxidation ditch treating antibiotic production wastewater.Field experimental data from the membrane bioreactor,both full-scale(500 m/d)and pilot(1.0 m3/d),were used to calculate the net present value(NPV),incorporating both capital expenditure(CAPEX)and operating expenditure.The results showed that the tank cost was estimated above membrane cost in the 38.2%,where capital expenditure contributed 24.2%more than operational expenditure.Tank construction cost was decisive in determining the net present value contributed 62.1%to the capital expenditure.The membrane bioreactor has the advantage of a longer lifespan flat-sheet membrane,while flux decline was tolerable.The antibiotics decreased to 1.87±0.33 mg/L in the MBR effluent.The upgrade to the membrane bioreactor also benefited further treatments by 10.1%-44.7%lower direct investment.
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