共查询到20条相似文献,搜索用时 46 毫秒
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对比了臭氧、臭氧催化氧化、臭氧/双氧水和臭氧/双氧水催化氧化4种工艺深度处理化工废水的效果,结果表明,当进水COD和色度分别为95.7 mg/L和90倍时,4种工艺出水的COD去除率分别为23.66%、26.77%、29.24%、32.97%,色度去除率分别为64.44%、64.44%、82.22%、82.22%,催化剂和双氧水均能小幅强化臭氧氧化效果。连续臭氧氧化可使出水COD降至20 mg/L,同时当臭氧投加量为60 mg/L时,4种工艺出水均具有一定的可生化性,满足后序生化工艺的需求。 相似文献
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印染废水经常规处理后,出水按照臭氧催化氧化和空塔氧化两种深度处理技术路线进行处理,以此对这两种印染废水深度处理技术进行效能和成本的评估与分析。结果表明两者均可使脱色达到排放标准。在投加臭氧催化剂的情况下,臭氧投加量为30ppm,其出水效果与空塔在臭氧投加量为40ppm时相当,节省了臭氧的消耗量,运行成本从0.45元/m^3下降到0.33元/m^3。每年可节省运行费用约105万元,增加臭氧催化剂的投资收回期小于2年。 相似文献
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Henry R. N. B. Enninful Prof. Dr. Dirk Enke Prof. Dr. Rustem Valiullin 《化学,工程师,技术》2023,95(11):1713-1729
Accurate structural characterization of mesoporous solids is of importance for potential applications and for better understanding of properties of natural porous materials. Among different characterization techniques, thermoporometry has several beneficial features, such as applicability to wetted and soft materials. In this review, we discuss recent advancements concerning nuclear magnetic resonance cryoporometry allowing for a notable improvement of the accuracy of this method. 相似文献
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《Journal of Adhesion Science and Technology》2013,27(9):971-992
Adhesion and excessive accumulation of atmospheric ice on the surface of exposed objects such as conductors of overhead power lines, cables and conductors in aluminum can have devastating economical and safety consequences as it was the case during the 1998 and 2007 ice storms in Canada and USA. Recent advances in the understanding of ice adhesion on various substrates and in materials science have spurred interest in developing new intrinsic icephobic materials. The aim of this paper is to review the most relevant research activities related to ice adhesion mechanisms and icephobic coating development during the recent years. This will allow a better comprehension of ice adhesion, and help determine more reliable and cost effective ways to develop icephobic coatings, In order to develop icephobic coatings three main groups of materials or surface treatment can be considered: (i) self-assembled monolayers with –CH3 or –CF3 groups oriented outward to the ice surface, (ii) coatings with a heterogeneous chemical composition of at least two highly hydrophobic components to disrupt the structure of the liquid-like layer, and finally (iii) a porous or superhydrophobic deposits to promote the presence of tiny air pockets at the ice/solid interface to disrupt bonding by creating stress concentrations. 相似文献
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