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Large-Scale Membrane Bioreactors for Industrial Wastewater Treatment in China:Technical and Economic Features,Driving Forces,and Perspectives

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Engineering 2021年第6期7卷 868-880页

作者： Jiao Zhang Kang Xiao Ziwei Liu Tingwei Gao Shuai Liang Xia Huang State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China College of Resources and Environment University of Chinese Academy of SciencesBeijing 100049China College of Environmental Science and Engineering Beijing Forestry UniversityBeijing 100083China Research and Application Center for Membrane Technology School of EnvironmentTsinghua UniversityBeijing 100084China

Membrane bioreactors(MBRs)have been and will continue playing an important role in industrial wastewater treatment and reuse in *** sustainable development of MBR technology in its mature-application stage requires reciprocal interactions between engineering and research ***,in this study,a total of 182 large-scale MBR projects treating industrial wastewater(with individual treatment capacities5000 m3d1)commissioned and under construction from 2003 to 2019 were analyzed *** growth of the cumulative treatment capacity was observed,with extension to diverse industries,and the super large-scale was enhanced *** treatment processes,pollutant removal efficiencies,and actual operational parameters were summarized regarding the particularity of industrial wastewater compared to municipal *** features including the total investment costs of the projects,their total footprint,and their operational energy consumption were analyzed as well.A vigorous MBR market has formed in China with the fast development of membrane elements and engineering suppliers,continuously increasing official oriented projects,and responsive and innovative business *** technology has been mostly applied in specific economic zones and water-deficient areas,but its widespread use all over China is foreseeable considering the vast future market for industrial wastewater treatment and *** policy–economy and market–technology driving forces revealed that MBR is consistent with the national development *** to the survey and analysis,prospective development in both engineering and research aspects of MBR is proposed to maintain its competitive edge.

关键词： Full-scale application Treatment capacity Parameter Footprint Geographic demand Policy

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Unraveling the Impact and Mechanisms of Microplastics in Sludge Treatment Systems on Volatile Fatty Acids During Anaerobic Fermentation: Exploration of Microbial Communities and Metabolic Pathways

SSRN

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SSRN 2024年

作者： Zhang, Shuai Huang, Xiao Dong, Wenyi Fu, Yicheng Gao, JingSi Zhou, Guorun Qu, Yanhui Cao, Kai Zheng, Zhihao Li, Zhiying Teng, Xindong Collaborative Innovation Center of Atmospheric Environment and Equipment Technology Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control School of Environmental Science and Engineering Nanjing University of Information Science & Technology Nanjing210044 China Shenzhen518055 China State Key Laboratory of Urban Water Resource and Environment School of Environment Harbin Institute of Technology Harbin150090 China Shenzhen Polytechnic Shenzhen518055 China

With the increase in plastic products, the content of microplastics in waste activated sludge (WAS) has also increased, affecting its subsequent process. This research probed into the influence of predominant microplastics on the generation of volatile fatty acids (VFAs) throughout the anaerobic digestion process of WAS. The results revealed that the VFA production in the microplastic addition group was reduced compared to the control group, with reductions ranging from 13.49% to 29.57%. While microplastics accelerated the dissolution of WAS, they inhibited the processes of hydrolysis and acidification, affected the proliferation of key microbes (norank_f_Bacteroidetes_vadinHA17, Ottowia, and Propioniclava), and decreased the abundance of genes related to hydrolysis and acidification (pfkb, gpmI, ilvE, aces). Furthermore, microplastics reduced the levels of key hydrolytic and acidogenic enzymes, suppressing hydrolysis and acidification. This study revealed the influence exerted by microplastics on the processof anaerobic digestion, which contributes to sludge reduction and resource utilization. © 2024, The Authors. All rights reserved.

关键词： Volatile fatty acids

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Eco-districts in France:What tools to ensure goals achievement?

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Science China Earth Sciences 2020年第6期63卷 865-874页

作者： Kathleen BOQUET Charline FROITIER Jinhui LI Kaihua XU Xianlai ZENG State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China Higher Institute for Environmental Engineering and Management MINES ParisTechParis Cedex 06France GEM Company Limited Shenzhen 518101China

Globally,to build cities and communities more inclusive,safe,resilient and sustainable is one of the most important sustainable development ***-districts in cities emerged as an answer to current global environmental concerns and have been developed in France since the *** objective of this work is to gather operational feedback from sustainable neighborhood projects owners to better understand the key barriers of such projects and how to overcome them.A case study of the eco-district Les Tanneries,Lingolsheim showed that the carbon footprint of each inhabitant annually amounted to 4 tons CO2 equivalent,more than half of the French *** for improvements were clearly identified regarding transports and food carbon *** for energy consumption,social diversity and density reached the level of the eco-districts average.A governance review pointed out some superior practices such as the formalization of a specification requirements handbook,a competition between project management teams,and the use of neighborhood sustainability assessment tools to measure and track changes in *** validated tools and obtained results can be useful in building sustainable cities and even China’s ecological civilization.

关键词： Geography and environment City management Eco-district Sustainability Assessment France

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Functional profiles of soil microbial communities in the alpine and temperate grasslands of China

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Grassland Research 2022年第1期1卷 3-13页

作者： Yunfeng Yang Jizhong Zhou Xue Guo State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijingChina Institute for Environmental Genomics and Department of Microbiology and Plant Biology University of OklahomaNormanOklahomaUSA School of Civil Engineering and Environmental Sciences University of OklahomaNormanOklahomaUSA Earth and Environmental Sciences Lawrence Berkeley National LaboratoryBerkeleyCaliforniaUSA

Grassland ecosystems in cold regions are typical of short growing seasons and limited primary productivity,rendering soil microorganisms as major ecosystem engineers in governing biogeochemical *** warming and extensive livestock grazing have dramatically influenced soil microbial diversity and function in grassland worldwide,but it remains elusive how functional microbial communities exist and respond to global ***,we present a review to highlight similarities and differences in soil functional microbial communities between alpine grasslands in the Qinghai-Tibet Plateau and temperate grasslands in the Inner Mongolian Plateau,both of which are major plateaus in China,but differ substantially in *** show that many specialized functional groups thrive under harsh conditions,exhibiting a high functional *** community compositions mirror the heterogeneity and complexity of grassland ***,functional microbial responses to environmental changes have been extremely variable,with few consistent patterns across both *** we identify a lack of technical standardization that prevents in-depth comparative studies for functional microbial communities,we conclude the review by outlining several research gaps that need to be filled in future studies.

关键词： climate changes functional microbial communities grassland soils grazing Inner Mongolian Plateau Qinghai-Tibet Plateau

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Increased dependence on mycorrhizal fungi for nutrient acquisition under carbon limitation by tree girdling

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Plant Diversity 2025年第3期47卷 466-478页

作者： Chen, Jing Cao, Jingjing Guo, Binglin Han, Meixu Feng, Zhipei Tang, Jinqi Mo, Xiaohan Wang, Junjian Yang, Qingpei Pei, Yuxin Kuzyakov, Yakov Ding, Junxiang Makita, Naoki Yang, Xitian Zhang, Haiyang Zhao, Yong Kong, Deliang College of Forestry Henan Agricultural University Zhengzhou 450002 China College of Horticulture China Agricultural University Beijing 100193 China School of Urban Planning and Design Peking University Shenzhen Graduate School Peking University Shenzhen 518055 China State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control School of Environmental Science and Engineering Southern University of Science and Technology Shenzhen 518055 China Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control School of Environmental Science and Engineering Southern University of Science and Technology Shenzhen 518055 China Department of Soil Science of Temperate Ecosystem University of Göttingen Göttingen 37077 Germany Peoples Friendship University of Russia (RUDN University) Moscow 117198 Russian Federation College of Ecology and Environment Zhengzhou University Zhengzhou 450001 China Faculty of Science Shinshu University 3-1-1 Asahi Nagano Matsumoto 390-8621 Japan Hawkesbury Institute for the Environment Western Sydney University Penrith 2751 NSW Australia College of Life Science Hebei University Baoding 071002 China

Nutrient acquisition through symbiotic ectomycorrhizal fungi is carbon (C) costly but fundamental for plant growth, community, and ecosystem functioning. Here, we examined the functions of roots and mycorrhiza with respect to nutrient uptake after artificially inducing C limitation-seven months after girdling of an ectomycorrhizal tree, Pinus taeda. Root physiological activity (measured as root nitrogen content and root exudation) declined after girdling and was accompanied with 110% and 340% increases in mycorrhizal colonization and extramatrical hyphal length, respectively. Fungi colonizing roots switched to a community characterized by higher C efficiency (lower C cost) of nutrient acquisition (CENA, the amount of nutrient acquisition per unit C cost) and lower network complexity, indicating a tradeoff between CENA and stability of the fungal community. Root transcriptome analysis suggested a shift in metabolic pathways from a tricarboxylic acid cycle decomposition of carbohydrate to lipid biosynthesis to maintain closer associations with mycorrhiza for nutrient cycling after the girdling. By integrating multi-level evidence, including root transcriptome, fungal composition, and network complexity data, we demonstrate an increased dependence on mycorrhiza for nutrient acquisition under the C limitation condition, which is likely due to a shift to fungal community with higher CENA at the cost of lower stability. © 2025 Kunming Institute of Botany, Chinese Academy of Sciences

关键词： Carbon limitation Fungal network complexity Girdling effects Mycorrhizal and root strategies Plant–microbiome interaction Root transcriptome

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Is atmospheric oxidation capacity better in indicating tropospheric O_(3) formation?

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Frontiers of environmental Science & Engineering 2022年第5期16卷 127-133页

作者： Peng Wang Shengqiang Zhu Mihalis Vrekoussis Guy PBrasseur Shuxiao Wang Hongliang Zhang Department of Atmospheric and Oceanic Sciences Fudan UniversityShanghai 200438China IRDR ICoE on Risk Interconnectivity and Governance on Weather/Climate Extremes Impact and Public Health Fudan UniversityShanghai 200438China Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention Department of Environmental Science&EngineeringFudan UniversityShanghai 200438China Institute of Environmental Physics University of BremenBremen D-28359Germany Climate and Atmosphere Research Center(CARE-C) the Cyprus InstituteNicosia 27456Cyprus Max Planck Institute for Meteorology Hamburg 20146Germany National Center for Atmospheric Research BoulderCO 80307USA State Key Joint Laboratory of Environmental Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex Beijing 100084China Institute of Eco-Chongming(IEC) Shanghai 202162China

Tropospheric ozone(O_(3))concentration is increasing in China along with dramatic changes in precursor emissions and meteorological conditions,adversely affecting human health and ecosystems.O_(3) is formed from the complex nonlinear photochemical reactions from nitrogen oxides(NOx=NO+NO_(2))and volatile organic compounds(VOCs).Although the mechanism of O_(3) formation is rather clear,describing and analyzing its changes and formation potential at fine spatial and temporal resolution is still a challenge *** this study,we briefly summarized and evaluated different approaches that indicate O_(3) formation *** identify that atmospheric oxidation capacity(AOC)is a better indicator of photochemical reactions leading to the formation of O_(3) and other secondary *** show that AOC has a prominent positive relationship to O_(3) in the major city clusters in China,with a goodness of fit(R^(2))up to *** outcome provides a novel perspective in characterizing O_(3) formation and has significant implications for formulating control strategies of secondary pollutants.

关键词： O_(3) AOC O_(3) formation regime

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Multivariate optimization of characteristic parameters of continuous-flow system with a front buffer tank for industrial reverse osmosis concentrate treatment

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Chemosphere 2023年第1期336卷 139078页

作者： Li, Shida Zeng, Fantang Zheng, Shaokui Fan, Zhongya Huang, Lu The Key Laboratory of Water and Air Pollution Control of Guangdong Province South China Institute of Environmental Sciences Ministry of Ecology and Environment No. 18 Ruihe Road Guangzhou510530 China School of Environment MOE Key Laboratory of Water and Sediment Sciences/State Key Lab of Water Environment Simulation Beijing Normal University Beijing100875 China

Industrial reverse osmosis concentrate (ROC) was electrochemically oxidized using a continuous-flow system (CFS) with a front buffer tank. Multivariate optimization including Plackett-Burman (PBD) and central composite design based on response surface method (CCD-RSM) was implemented to investigate the effects of characteristic (e.g., recirculation ratio (R value), ratio of buffer tank and electrolytic zone (RV value)) and routine (e.g., current density (i), inflow linear velocity (v) and electrode spacing (d)) parameters. R, v values and current density significantly influenced chemical oxygen demand (COD) and NH4+−N removal and effluent active chlorine species (ACS) level, while electrode spacing and RV value had negligible effects. High chloride content of industrial ROC facilitated the generation of ACS and subsequent mass transfer, low hydraulic retention time (HRT) of electrolytic cell improved the mass transfer efficiency, and high HRT of buffer tank prolonged the reaction between the pollutants and oxidants. The significance levels of COD removal, energy efficiency, effluent ACS level and toxic byproduct level CCD-RSM models were validated by statistical test results, including higher F value than critical effect value, lower P value than 0.05, low deviation between predicted and observed values, and normal distribution of calculated residuals. The highest pollutant removal was achieved at a high R value, a high current density and a low v value;the highest energy efficiency was achieved at a high R, a low current density and a high v value;the lowest effluent ACS and toxic byproduct levels were achieved at a low R value, a low current density and a high v value. Following the multivariate optimization, the optimum parameters were decided to be v = 1.2 cm h−1, i ≥ 8 mA cm−2, d ≥ 4, RV = 10−20 and R = 1 to achieve better effluent quality (i.e., lower effluent pollutant, ACS and toxic byproduct levels). © 2023 Elsevier Ltd

关键词： Effluents

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High Emission of Black Carbon in Heavy-Duty Diesel Vehicles: Insights from Microscopic Operating Conditions

SSRN

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SSRN 2024年

作者： Chen, Ting He, Xiao He, Liqiang Q. You, Yan Zeng, Lewei Gao, Mingqiu Cao, Yihuan Li, Zhenhua Zheng, Xuan Zhang, Shaojun Wu, Ye College of Chemistry and Environmental Engineering Shenzhen University Shenzhen518060 China State Environmental Protection Key Laboratory of Vehicle Emission Control and Simulation Chinese Research Academy of Environmental Sciences Beijing100012 China National Observation and Research Station of Coastal Ecological Environments in Macao Macao Environmental Research Institute Macau University of Science and Technology Macao999078 China Co. Ltd. Guangzhou511300 China School of Environment State Key Joint Laboratory of Environment Simulation and Pollution Control Tsinghua University Beijing100084 China

The in-depth investigation of the high black carbon (BC) emission scenarios of heavy-duty diesel vehicles (HDDVs) is a crucial step toward developing effective control strategies. Chassis dynamometer tests were conducted for three in-use HDDVs, namely, vehicle #1, #2, and #3, focusing on the instantaneous BC characterizations during multiple driving conditions, i.e., speed phases and acceleration intervals. BC emission was found to increase with positive acceleration, and high acceleration could result in instantaneous BC spikes. The total BC emissions during velocity-acceleration interval 15-60 km h-1 and 0.1-0.9 m s-2 contributed to 43.4 ± 10.2% of the whole-cycle emissions, while the proportions of time spent in the velocity-acceleration interval to the whole cycle were 23.1 ± 7.6%. The cold-start microscopic operating condition was assessed by the cold-start extra emissions (CSEEs). Under various pre-defined cold-start durations, the proportions of CSEEs in the total cycle emissions were 9.4-21.0%, 0-9.1%, and 6.8-39.4% for vehicles #1, #2, and #3, respectively. The CSEEs exhibited an initial rise, followed by a plateau as the assumed cold-start durations extended. A uniform cold-start duration of 600 s was established based on the criterion that the relative standard deviation (RSD) of CSEEs during the plateau period was less than 10%. We proposed that the updated cold-start duration can enhance the accuracy and consistency of cold-start corrections in emission inventory models. © 2024, The Authors. All rights reserved.

关键词： Acceleration

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Efficient Removal of Sulfamethoxazole by Boron-Doped Porous Biochar-Activated Persulfate: Simultaneously Enhanced Adsorption and Non-Radical Pathways

SSRN

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SSRN 2025年

作者： Qin, Lei Tong, Tao Huang, Danlian Zhang, Mingming Ma, Dengsheng Fan, Xing Deng, Hao Lv, Guangjie Ma, Mingyang Yan, Ming College of Environmental Science and Engineering Key Laboratory of Environmental Biology and Pollution Control Hunan University Ministry of Education Changsha410082 China Institute of Environment and Ecology Tsinghua Shenzhen International Graduate School Tsinghua University Shenzhen518055 China

The properties of catalysts and the activation pathway are crucial in persulfate-based advanced oxidation processes. In this study, boron-doped porous biochar (BPC-0.25), featuring adsorption-oxidation dual function, was successfully synthesized to activate peroxydisulfate (PDS) for sulfamethoxazole (SMX) degradation. The results showed that BPC-0.25 removed 83% of SMX in 30 min via absorption and achieved complete degradation in 20 min through the synergistic effect with PDS oxidation. Meanwhile, the BPC-0.25/PDS system exhibited good anti-interference ability to adapt to complex water quality conditions. Quenching experiments, EPR tests, and electrochemical analyses revealed that the PDS activation by BPC-0.25 was dominated by the generation of singlet oxygen (1O2) and supplemented by electron transfer process (ETP). Remarkably, boron doping enhanced the adsorption capacity and mass transfer due to the formation of mesoporous structure and improvement of surface affinity. Simultaneously, the content of carbonyl group (C=O) and boron doped species were increased, both of which possessed high reactivity, thereby significantly improving the catalytic performance and ETP efficiency. The results further identified that C=O, structural defects, and BC3 were the main active sites in the BPC-0.25/PDS system. Besides, possible degradation pathways of SMX were proposed by mass spectrometry and theoretical calculations, while the ecotoxicity of the intermediates was predicted by ECOSAR. Overall, this work offers innovative strategies for designing efficient and environmentally friendly metal-free catalysts, provides novel insights into the activation mechanism of PDS, and presents effective approaches for wastewater remediation. © 2025, The Authors. All rights reserved.

关键词： Semiconductor doping

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Removal of Copper and Lead Ions from Water Using Dopamine-Modified Waste Marine Plastic

SSRN

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SSRN 2024年

作者： Zhang, Huiyi Gibb, Stuart W. James, Neil A. Boyd, Kenneth G. Pap, Sabolc Environmental Research Institute UHI North West and Hebrides University of the Highlands and Islands Thurso Caithness ScotlandKW14 7JD United Kingdom State Key Joint Laboratory of Environment Simulation and Pollution Control Beijing Key Laboratory for Emerging Organic Contaminants Control School of Environment Tsinghua University Beijing100084 China

Plastic waste has been identified as a threat to the marine ecosystem. One concerning aspect is the ability of this waste to bind contaminants and act as a vector for their long-range transport. This study sought to evaluate whether these dual concerns could be converted in to a solution for water treatment by evaluating waste plastic as a potential adsorbent for dissolved metal contaminants. The adsorption capacity of ‘raw’ and ‘functionalised’ waste polypropylene rope was evaluated for the removal of Cu2+and Pb2+ from aqueous media. Functionalisation using dopamine significantly improve the adsorption capacity of plastic ropes for Cu2+ and Pb2+, from 122 and 233 μg/g to 317 and 536 μg/g (40 °C), respectively. Instrumental characterisation indicated the mechanisms of removal to be electrostatic interaction and chelation. Column studies on Cu2+ and Pb2+ revealed that use of plastic adsorbents with activated carbon could enhance the lifetime of the packed media by about 82%. This study was the first to evaluate the potential of marine plastic waste as an adsorbent and results suggest that these materials could be combined with other materials in wastewater treatment systems. The same results re-emphasise the potential of plastic to facilitate transportation of contaminants in the ocean. © 2024, The Authors. All rights reserved.

关键词： Adsorption

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