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Numerical simulation of particle deposition in semicircular ribbed duct(半圆形粗糙元壁面颗粒沉积数值模拟研究)
Zhejiang Daxue xuebao. Lixue ban, 2022 为研究半圆形粗糙元壁面对颗粒沉积的影响，分别采用雷诺应力模型（RSM）和离散相模型（DPM）求解流场与颗粒运动轨迹，并结合临界速度判别颗粒沉积的方法。通过构建不同半圆形粗糙元参数（e/D，p/e）的通风管道计算域，研究了1~10 μm颗粒沉积速度变化及沿气流方向颗粒的沉积趋势，分析了流场所引起的湍流变化对颗粒沉积的影响，与相同参数下的方形粗糙元壁面颗粒沉积特性进行了对比。同时，分析了粗糙元参数对颗粒沉积速度的影响。结果发现，半圆形壁面颗粒沉积速度小于同参数下的方形壁面颗粒沉积速度 ...
HUANGQiuyan(黄秋焰) +2 more
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Gongye shui chuli, 2021 以陶粒为对照，在分析废旧橡胶颗粒理化性质的基础上，对比研究分别以橡胶颗粒和陶粒为填料的反硝化生物滤池（DNBF）的启动挂膜情况以及不同C/N及HRT条件下的运行情况。结果表明，以橡胶颗粒为填料的DNBF更容易启动并达到稳定状态；陶粒和橡胶颗粒DNBF的最佳C/N分别为4和3，其中橡胶颗粒DNBF的脱氮率达90%以上；在C/N为4的条件下，陶粒和橡胶颗粒DNBF的最佳HRT分别为150 min和90 min，橡胶颗粒DNBF的脱氮率在93.5%以上。试验结果均表明废旧橡胶颗粒是一种良好的DNBF填料 ...
喻学敏, 周军, 陈浩
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Gongye shui chuli, 2023 好氧颗粒污泥技术具有省地、节能、可资源回收等优势，被视为新一代污水处理技术，但该技术历经近30 a研究，目前仍未得到大规模普遍应用。该技术的产业化是环保行业普遍关心的问题。依据水处理技术创新与产业化发展的历史数据，对好氧颗粒污泥技术的发展现状及所处阶段进行分析，判定好氧颗粒污泥技术正处于早期开拓的末期，即将进入大规模接受的前期，现阶段是企业参与产业化的良好时机。为加速技术创新，按照价值驱动与危机驱动两种创新发展模式对好氧颗粒污泥技术的应用场景进行分析 ...
李志华 +5 more
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Shuitu Baochi Xuebao, 2021 明晰砒砂岩坡面侵蚀泥沙颗粒输移特征是研究黄河泥沙淤积问题的关键。采用水力、风力、冻融复合侵蚀实体模拟技术，研究在35°坡度和110 mm/h雨强条件下单一水蚀、冻融+水蚀、冻融+风蚀+水蚀3组不同侵蚀动力复合作用下，砒砂岩坡面侵蚀泥沙颗粒变化特征。结果表明：砒砂岩坡面在单一水蚀作用下以整体侵蚀为主，侵蚀泥沙颗粒变化稳定；冻融+水蚀作用下粗颗粒产出明显，冻融作用对粗颗粒的影响凸显；冻融+风蚀+水蚀作用下坡面稳定性最差，侵蚀泥沙颗粒变化最剧烈。复合侵蚀作用下坡面侵蚀过程以搬运粒径较大的泥沙颗粒为主 ...
高玄娜 +4 more
doaj
Gongye shui chuli, 2010 以盐仓工业园区废水为原水,在序批式反应器(SBR)中培养好氧颗粒污泥。结果表明:该工业园区废水中可以实现好氧污泥颗粒化,且颗粒密实,但形状不规则;经过70 d运行后,反应器中污泥SVI10达到26 mL/g,颗粒化率为80%,颗粒的粒径主要在0.3～0.5 mm之间;颗粒污泥成熟后,好氧颗粒污泥反应器对COD的去除率为73%～80%、色度去除率90%～95%,出水水质(COD、色度)优于该污水处理厂的出水。
周延年 +6 more
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Rare Metals, Volume 45, Issue 10, October 2026.ABSTRACT NiBSi‐based coatings reinforced with spherical cast tungsten carbide (NSC coating), irregular cast tungsten carbide (NC coating), and macrocrystalline tungsten carbide (NMC coating) are investigated to elucidate the impact of abrasive wear behavior.
Chong Chen +9 more
wiley +1 more source
Rare Metals, Volume 45, Issue 10, October 2026.ABSTRACT Magnetic particles coated with carbon shells have been considered as promising electromagnetic wave absorption materials with antibacterial features. However, how to precisely control the monodispersed magnetic nanoparticles on a carbon matrix to manipulate impedance matching and antibacterial performances is still a key challenge.
Xiaofei Li +10 more
wiley +1 more source
Rare Metals, Volume 45, Issue 9, September 2026.ABSTRACT Pyritum can eliminate blood stasis and promote the healing of muscles and bones, which has been used as a traditional mineral medicine in China for thousands of years. However, the mechanisms of action and processing methods of Pyritum were not illustrated.
Mingxia Li +8 more
wiley +1 more source
Gongye shui chuli, 2017 高效厌氧反应器具有占地面积少、容积负荷高、运行稳定等优点，广泛应用于市政和工业废水处理。厌氧颗粒污泥的快速形成是高效厌氧反应器启动的关键。文章介绍了近年来加速厌氧污泥颗粒化的方法，着重讨论了运行条件的优化、优势菌种的筛选和投加颗粒物、高聚物以及金属阳离子对加速厌氧污泥颗粒化的效果，并对今后研究提出了展望，旨在为厌氧污泥颗粒化的工程应用奠定理论基础。
梁家豪 +4 more
doaj +2 more sources
Rare Metals, Volume 45, Issue 9, September 2026.ABSTRACT Esophageal squamous cell carcinoma (ESCC) remains associated with frequent local recurrence and distant metastasis despite advances in radiochemotherapy and immunotherapy, highlighting the need for therapeutic strategies that improve both local tumor control and systemic antitumor immune responses.
Dongdong Wang +7 more
wiley +1 more source