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Engineering 2024年第7期38卷 184-193页

作者： Li Chen Gong Zhang Huijuan Liu shiyu miao Qingbai Chen Huachun Lan Jiuhui Qu Center for Water and Ecology State Key Joint Laboratory of Environment Simulation and Pollution ControlSchool of EnvironmentTsinghua UniversityBeijing 100084China

Efficient metal recovery from industrial wastewater facilitates addressing of the environmental hazards and resource requirements of heavy *** conventional electrodeposition recovery method is hampered by the limitations of interfacial ion transport in charge-transfer reactions,creating challenges for simultaneous rapid and high-quality metal ***,we proposed integrating a transient electric field(TE)and swirling flow(SF)to synchronously enhance bulk mass transfer and promote interfacial ion *** investigated the effects of the operation mode,transient frequency,and flow rate on metal recovery,enabling determination of the optimal operating conditions for rapid and efficient sequential recovery of Cu in TE&SF *** conditions included low and high electric levels of 0 and 4 V,a 50%duty cycle,1 kHz frequency,and 400 L·h^(-1)flow *** kinetic coefficients of TE&SF electrodeposition were 3.5-4.3 and 1.37-1.97 times that of single TE and SF electrodeposition,*** the deposition process under TE and SF conditions confirmed the efficient concurrence of interfacial ion transport and charge transfer under TE and SF synergy,which achieved rapid and highquality metal ***,the combined deposition strategy is considered an effective technique for reducing metal pollution and promoting resource recycling.

关键词： Ion transport Reaction kinetics Transient electric field Swirling flow

Pre-oxidation enhanced cyanobacteria removal in drinking water treatment: A review

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Journal of Environmental Sciences 2021年第12期33卷 160-168页

作者： Jing Qi Baiwen Ma shiyu miao Ruiping Liu Chengzhi Hu Jiuhui Qu Key Laboratory of Drinking Water Science and Technology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China

Cyanobacterial bloom has many adverse effects on source water quality and drinking water production. The traditional water treatment process can hardly achieve satisfactory removal of algae cells. This review examines the impact of pre-oxidation on the removal of cyanobacteria by solid-liquid separation processes. It was reported that the introduction of chemical oxidants such as chlorine, potassium permanganate, and ozone in algae-laden water pretreatment could improve algae removal by the subsequent solid-liquid separation processes. However, over dosed oxidants can result in more serious water quality risks due to significant algae cell lysis and undesirable intracellular organic matter release. It was suggested that moderate pre-oxidation may enhance the removal of cyanobacteria without damaging algae cells. In this article, effects of moderate pretreatment on the solid-liquid separation processes(sedimentation, dissolved air flotation, and membrane filtration) are reviewed.

关键词： Cyanobacterial bloom Pre-oxidation Sedimentation Dissolved air flotation Membrane filtration

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废膜炭吸附去除废水中典型污染物的性能研究

石油化工高等学校学报 2024年第2期37卷 1-8页

作者：刘瑞娟杨兰苗时雨李艳红安晓强兰华春桂林理工大学环境科学与工程学院广西桂林541004 清华大学水质与水生态中心北京100084 苏州科技大学环境科学与工程学院江苏苏州215009

在膜法处理污水过程中,广泛使用有机聚合物分离膜。但是,由于不可逆膜污染的发生,需要更换性能衰减后膜,导致大量废膜的生成,因此实现废聚合物膜的再利用具有重要的经济和环境价值。以污水处理厂的废旧中空纤维膜为模板,通过简单的热解... 详细信息

在膜法处理污水过程中,广泛使用有机聚合物分离膜。但是,由于不可逆膜污染的发生,需要更换性能衰减后膜,导致大量废膜的生成,因此实现废聚合物膜的再利用具有重要的经济和环境价值。以污水处理厂的废旧中空纤维膜为模板,通过简单的热解重塑反应制备了一种具有超微孔-介孔-大孔结构的炭材料;结合炭材料的结构表征,对活性炭的吸附性能进行了分析,研究了其吸附水中典型芳香烃类和抗生素类污染物的动力学和热力学过程。结果表明,具有分级孔结构的废膜炭对芳香烃类有机污染物的去除能力高于商业炭,而对环丙沙星、卡马西平、磺胺嘧啶等抗生素的吸附性能低于商业炭。

关键词：活性炭废水处理膜吸附孔结构污染物

Study on a Gas Plunger Lift Model for Shale Gas Wells and Its Effective Application

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Fluid Dynamics & Materials Processing 2022年第4期18卷 933-955页

作者： Peng Liu Man Chen Zhiguo He Wei Luo shiyu miao Sichuan Changning Gas Development Company PetroChina Southwest Oil&Gas Field CompanyChengdu610051China Petroleum Engineering Institute of Yangtze University Wuhan430100China Key Laboratory of Drilling and Production Engineering for Oil and Gas Yangtze UniversityWuhan430100China

The problem of efficient gas lift for gas well annulus packers that rely on their own energy plungers is *** complex related gas-liquid problem is addressed in the frame of model where the gas inflow dynamics and liquid inflow dynamics of the considered shale gas wells are weakly *** this basis,and with the aiding support of indoor simulation experimental data,a new gas plunger lift design taking into account liquid leakage is ***,a dedicated software relying on this approach is developed and used to verify the reliability of the model by means of field examples.

关键词： Packers their own energy plungers shale gas wells weakly coupled liquid leakage

A Dynamic Plunger Lift Model for Shale Gas Wells

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Fluid Dynamics & Materials Processing 2023年第7期19卷 1735-1751页

作者： shiyu miao Xiao Liu Xiaoya Feng Haowen Shi Wei Luo Peng Liu Petroleum Engineering Institute of Yangtze University Wuhan430100China Laboratory of Multiphase Pipe Flow Gas Lift Innovation CenterChina National Petroleum Corp.Yangtze UniversityWuhan430100China Key Laboratory of Drilling and Production Engineering for Oil and Gas Wuhan430100China Sichuan Shale Gas Exploration and Development Limited Liability Company Chengdu640000China Sichuan Changning Gas Development Company PetroChina Southwest Oil&Gas Field CompanyChengdu610051China Oil and Gas Technology Research Institute of Changqing Oilfield Company PetroChinaXi’an710018China

At present,the optimization of the plunger mechanism is shale gas wells is mostly based on empirical methods,which lack a relevant rationale and often are not able to deal with the quick variations experienced by the production parameters of shale gas wells in comparison to conventional gas *** order to mitigate this issue,in the present work,a model is proposed to loosely couple the dynamics of gas inflow into shale gas wells with the dynamics of the liquid *** from the flow law that accounts for the four stages of movement of the plunger,a dynamic model of the plunger lift based on the real wellbore trajectory is *** model is then tested against 5 example wells,and it is shown that the accuracy level is higher than 90%.The well‘switch’,optimized on the basis of simulations based on such a model,is tested through on-site *** is shown that,compared with the original switch configuration,the average production of the sample well can be increased by about 15%.

关键词： Shale gas well complex and more complex well bore structure plunger lift loose coupling simulation model

Simulated Sunlight Irradiation Based Photocatalytic Degradation of Acrylonitrile by Sn-F Co-doped TiO 2/SiO 2 Nano Powder Catalyst

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Journal of Harbin Institute of Technology(New Series) 2021年第1期28卷 12-19页

作者： Hanliang Li shiyu miao Lu Qiu Bandna Bharti Feng Ouyang School of Civil and Environmental Engineering Harbin Institute of TechnologyShenzhen 518055GuangdongChina School of Life Science and Medicine Dalian University of TechnologyPanjin 124000LiaoningChina

This study proved the significance of simulated sunlight irradiation response capability of Sn-F co-doped TiO_(2)/SiO_(2)(Sn-F-TiO_(2)/SiO_(2))photocatalysts,which were prepared by a simple sol-gel method and were evaluated by acrylonitrile degradation for photocatalytic *** synthesized catalysts were characterized by X-ray Diffraction(XRD),Scanning Electron Microscopy(SEM),Energy Dispersive Spectrometer(EDS),X-ray Photoelectron Spectroscopy(XPS),Brunauer-Emmett-Teller(BET),Ultraviolet-Visible Absorption spectroscopy(UV-Vis),and Photoluminescence Spectroscopy(PL).UV-Visible spectroscopy demonstrated that Sn doping caused remarkable red shift in TiO_(2),which significantly increased the absorption efficiency of the *** XPS results showed that Sn was successfully doped into the TiO_(2) *** photocatalytic degradation of acrylonitrile indicated that the Sn-F-TiO_(2)/SiO_(2) photocatalysts exhibited excellent photocatalytic activity when being annealed at 550℃for 2 *** degradation rate of acrylonitrile reached 67.7%after irradiation under simulated sunlight for 6 min,and the hole was the most important active species.

关键词： photocatalysis acrylonitrile degradation Sn doping F-TiO_(2)/SiO_(2)

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寒冷地区典型办公园区室外热舒适研究

建筑节能（中英文） 2024年第5期52卷 67-73,106页

作者：苗时雨郭飞王小妮宋忻航龚志品大连理工大学建筑与艺术学院辽宁大连116000 中国建筑节能协会北京100831

办公建筑作为城市中常见的建筑类型,是城市居民的重要活动场所,室外热环境的改善能够有效提升办公园区的空间品质。选取大连市典型办公园区作为研究对象,采用类型学研究方法,以通用热气候指数(Universal Thermal Climate Index,UTCI)与... 详细信息

办公建筑作为城市中常见的建筑类型,是城市居民的重要活动场所,室外热环境的改善能够有效提升办公园区的空间品质。选取大连市典型办公园区作为研究对象,采用类型学研究方法,以通用热气候指数(Universal Thermal Climate Index,UTCI)与热舒适预测平均投票数(Predicted Mean Vote,PMV)作为评价指标,通过软件模拟不同围合度条件下办公园区热舒适的分布情况。结果表明:①以平面围合程度作为划分依据,将研究样本按照围合程度从低到高分为点式、板式、L字型、U字型、庭院型、复合型六大类。②在建筑参数相近的条件下,随着建筑组团围合度的提高,办公园区建筑场地内的室外热舒适度越高,即场地热舒适度从高到低排序为:复合式>庭院式>U字型>L字型>板式>点式。在仅考虑室外热舒适度的情况下,寒冷地区办公建筑适合围合度高(复合型、庭院型、U字型)的建筑形式。

关键词：办公园区类型学建筑围合度室外热舒适热舒适模拟城市形态

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利用微生物电解池法增强冷水鱼循环水养殖系统水质处理能力

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青海大学学报 2024年第4期42卷 10-18页

作者：李月苗世玉白鹏李茹周睿思童嘉琪刘扬青海大学生态环境工程学院青海西宁810016 农业农村部高原冷水鱼养殖与生态环境保护重点实验室青海西宁810016

为了解决传统曝气生物滤池对养殖废污水中氨氮和硝酸盐去除效率较低的问题,本文利用微生物电解池(MEC)法研究低温条件下不同碳源种类、电压强度对MEC系统化学需氧量(COD)、氨氮(NH_(3)-N)、硝氮(NO_(3)^(-)-N)、总氮(TN)和总磷(TP)的脱... 详细信息

为了解决传统曝气生物滤池对养殖废污水中氨氮和硝酸盐去除效率较低的问题,本文利用微生物电解池(MEC)法研究低温条件下不同碳源种类、电压强度对MEC系统化学需氧量(COD)、氨氮(NH_(3)-N)、硝氮(NO_(3)^(-)-N)、总氮(TN)和总磷(TP)的脱除效率,了解最优碳源和电压强度条件下微生物电解池强化淡水冷水鱼养殖系统的水处理能力并探讨其去除机理。结果表明:乙酸钠为碳源时,COD、NH_(3)-N、NO_(3)^(-)-N和TP去除率分别达到82.10%、87.56%、98.64%和73.64%;电压强度为0.30 V时,COD、NH_(3)-N、NO_(3)^(-)-N和TP去除率分别达到81.01%、73.15%、76.74%和83.97%。宏基因测序结果显示,在最佳碳源和电压强度条件下,属水平下的链霉菌属、假单胞菌属和伯克霍尔德菌属为微生物群落中主要的优势菌属;氮代谢通路涉及到的关键功能基因amoCAB、nxrAB、nirBD、nrfA和nifDHK等表明,MEC系统主要通过同步硝化反硝化路径进行氮去除代谢。

关键词：冷水鱼养殖微生物电解池碳源外加电压微生物群落

High-lattice-adapted surface modifying Na_(4)MnV(PO_(4))_(3) for better sodium storage

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Nano Research 2024年第4期17卷 2728-2735页

作者： Chongran Song shiyu Li Ying Bai International Joint Research Laboratory of New Energy Materials and Devices of Henan Province School of Physics and ElectronicsAcademy for Advanced Interdisciplinary StudiesHenan UniversityKaifeng 475004China

Sodium-ion batteries(SIBs)are required to possess long cycle life when used for large-scale energy *** polyanionic Na_(4)MnV(PO_(4))_(3)(NMVP)reveals good cyclic stability due to its unique three-dimensional(3D)frame structure,but it still faces the challenge of interfacial degradation in practical *** this work,NASICON-type Na_(1.3)Al_(0.7)Ti_(1.3)(PO_(4))_(3)(NATP)was deposited on the surface of NMVP to promote interface stability by surface modification and gradient *** a result,the optimized NMVP@2%NATP released a capacity retention of 44.8%after 1000 cycles at 5 C,much higher than that of the initial NMVP(28.9%).The enhanced electrochemical performance was mainly attributed to NATP coating acting as a fast ion transport carrier and physical barrier,significantly facilitating the Na^(+)diffusion and isolating side reaction at the electrode/electrolyte *** the other hand,Ti_(4)^(+)and Al^(3+)cations from the NATP were partially doped inside the NMVP surface to boost the transport of Na^(+),and the perfect lattice matching of NVMP and NATP improved the interface and structural stability accompanying long *** work demonstrated the effectiveness of surface modification with high lattice match material and provided new perspectives for high energy density solid-state SIBs.

关键词： high-lattice-adapted cathode surface modification sodium-ion batteries

Recycling arsenic-containing bio-leaching residue after thermal treatment in cemented paste backfill:Structure modification,binder properties and environmental assessment

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International Journal of Minerals,Metallurgy and Materials 2024年第10期31卷 2136-2147页

作者： Dengfeng Zhao shiyu Zhang Yingliang Zhao Department of Mining Engineering Lyuliang UniversityLvliang 033000China School of Civil and Environmental Engineering University of Science and Technology BeijingBeijing 100083China School of Mining Engineering Taiyuan University of TechnologyTaiyuan 030024China Department of Civil and Environmental Engineering The Hong Kong Polytechnic UniversityHong Kong 00852China

The substantial arsenic(As)content present in arsenic-containing bio-leaching residue(ABR)presents noteworthy environ-mental challenges attributable to its inherent instability and susceptibility to *** its elevated calcium sulfate content,ABR exhibits considerable promise for industrial *** study delved into the feasibility of utilizing ABR as a source of sulfates for producing super sulfated cement(SSC),offering an innovative binder for cemented paste backfill(CPB).Thermal treatment at varying temperatures of 150,350,600,and 800℃ was employed to modify ABR’s *** investigation encompassed the examination of phase transformations and alterations in the chemical composition of As within ***,the hydration characteristics of SSC utilizing ABR,with or without thermal treatment,were studied,encompassing reaction kinetics,setting time,strength development,and *** findings revealed that thermal treatment changed the calcium sulfate structure in ABR,consequently impacting the resultant sample ***,calcination at 600℃ demonstrated optimal modification effects on both early and long-term strength *** enhanced performance can be attributed to the augmented formation of reaction products and a densified ***,the thermal treatment elicited modifications in the chemical As fractions within ABR,with limited impact on the As immobilization capacity of the prepared binders.

关键词： cemented paste backfill bio-leaching residue arsenic immobilization binder hydration calcination