Proton exchange membrane fuel cell(PEMFC) as a power supply device has attracted wide attention in China and abroad for its advantages of high energy density, energy conversion efficiency and zero pollution.With the v...Proton exchange membrane fuel cell(PEMFC) as a power supply device has attracted wide attention in China and abroad for its advantages of high energy density, energy conversion efficiency and zero pollution.With the vigorous support of China's national policy, research institutes and enterprises have carried out extensive and pragmatic work on the basic materials, key components, stacks, auxiliary systems of PEMFCs, as well as the hydrogen station construction in order to realize the wide application of hydrogen energy.PEMFC System and Engineering Research Center of DICP is one of the earliest players in the H2-PEMFCs field.Advances have been achieved in the fields of low-platinum contained catalysts,PEMs, high-efficiency MEAs, low-cost metal bipolar plates, low-temperature and impurity air environment adaptability, stacks and systems.This paper introduces recent progresses of H2-PEMFCs at DICP in key materials, components, stacks, systems and the applications.The engineering status of proton exchange membrane water electrolysis(PEMWE) and the alkaline anion exchange membrane fuel cells(AEMFCs)are also summarized.展开更多
污泥膨胀是污水处理工艺启动和运行中棘手的问题,食品废水采用A/O工艺进行低温下启动运行时,出现了污泥膨胀的现象,研究对A/O工艺段水质进行了分析,构建了16S r DNA克隆文库.通过对膨胀污泥微生物群落解析,探讨了污泥膨胀和工艺调控的关...污泥膨胀是污水处理工艺启动和运行中棘手的问题,食品废水采用A/O工艺进行低温下启动运行时,出现了污泥膨胀的现象,研究对A/O工艺段水质进行了分析,构建了16S r DNA克隆文库.通过对膨胀污泥微生物群落解析,探讨了污泥膨胀和工艺调控的关系.研究表明,厌氧膨胀污泥中Proteobacteria占总的细菌数的63.51%,Chloroflexi为16.22%,其中Thauera sp.占到总的细菌数的20.27%;好氧膨胀污泥中Proteobacteria占总的细菌数的36.08%,Chloroflexi为24.74%,Bacteroidetes为7.22%,出现了与污泥膨胀有关的细菌Uncultured Nocardia,Uncultured Leptolyngbya sp.,Thauera sp..导致污泥膨胀的主要原因是工艺的进水温度低,厌氧段厌氧程度不够,可生化性差,部分重金属超标,好氧段的曝气量不足.建议通过调控工艺的进水温度,提高厌氧段的厌氧程度,提高好氧段的曝气量,可以有效地控制污泥膨胀.展开更多
基金supported by the National Key Research and Development Program of China(2016YFB0101207)the Strategic Priority Research Program of the Chinese Academy of Sciences(XDB06050303)the Natural Science Foundation of China(U1664259)
文摘Proton exchange membrane fuel cell(PEMFC) as a power supply device has attracted wide attention in China and abroad for its advantages of high energy density, energy conversion efficiency and zero pollution.With the vigorous support of China's national policy, research institutes and enterprises have carried out extensive and pragmatic work on the basic materials, key components, stacks, auxiliary systems of PEMFCs, as well as the hydrogen station construction in order to realize the wide application of hydrogen energy.PEMFC System and Engineering Research Center of DICP is one of the earliest players in the H2-PEMFCs field.Advances have been achieved in the fields of low-platinum contained catalysts,PEMs, high-efficiency MEAs, low-cost metal bipolar plates, low-temperature and impurity air environment adaptability, stacks and systems.This paper introduces recent progresses of H2-PEMFCs at DICP in key materials, components, stacks, systems and the applications.The engineering status of proton exchange membrane water electrolysis(PEMWE) and the alkaline anion exchange membrane fuel cells(AEMFCs)are also summarized.
