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学者姓名：张杰
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Abstract ：
Carbon capture performance is a key factor determining the chemical energy recovery potential of the high-rate contact stabilization (HiCS) process. However, the mechanisms of organic carbon capture are complex, involving surface adsorption, extracellular adsorption, and intracellular storage. A unique characteristic of the HiCS process is its low sludge residence time (SRT). Unfortunately, the influence of SRT on carbon capture has not been thoroughly studied, especially in terms of the underlying mechanisms. In this study, the microscopic changes in carbon capture performance during the transition from a conventional contact stabilized (CS) system to a highrate mode of operation were demonstrated using intracellular carbon sources, extracellular polymeric substances (EPS), signaling molecules, and microbial community assays. The results showed that the extracellular carbon adsorption and intracellular carbon storage performance increased, and the microbial community structure changed significantly with converting the CS system to the high-rate operation mode. The enhancement of extracellular carbon adsorption performance mainly relied on the growth of EPS, which was accomplished by the strong growth of the relative abundance of the dominant bacterial group Cloacibacterium within the HiCS system, offsetting the negative effect produced by the decline of acyl-homoserine lactones. 98 mgCOD/gSS, 343 mgCOD/ gSS, and 500 mgCOD/gSS of polyhydroxyalkanoates (PHAs) per sludge unit were obtained at SRT-24d, 8d, and 2d, respectively, suggesting that the HiCS system is more advantageous for rapid PHAs production.
Keyword ：
Intracellular carbon storage Intracellular carbon storage Sludge retention time Sludge retention time Extracellular carbon capture Extracellular carbon capture Acyl-homoserine lactones Acyl-homoserine lactones High-rate contact stabilization High-rate contact stabilization
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| GB/T 7714 | Fu, Sibo , Li, Dong , Fu, Kunming et al. Towards a high-rate operation of contact stabilization process: A microscopic view of carbon capture properties [J]. | ENVIRONMENTAL RESEARCH , 2024 , 263 . |
| MLA | Fu, Sibo et al. "Towards a high-rate operation of contact stabilization process: A microscopic view of carbon capture properties" . | ENVIRONMENTAL RESEARCH 263 (2024) . |
| APA | Fu, Sibo , Li, Dong , Fu, Kunming , Zhang, Xiaohang , Zhu, Yanjun , Yang, Sen et al. Towards a high-rate operation of contact stabilization process: A microscopic view of carbon capture properties . | ENVIRONMENTAL RESEARCH , 2024 , 263 . |
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Abstract ：
The high-rate contact stabilization (HiCS) process, a variant of high-rate activated sludge, has gained attention for its superior energy recovery and enhanced biosorption capabilities. The need for efficient energy recovery in HiCS necessitates a high settling efficiency to minimize resource loss due to endogenous sludge consumption. However, the low sludge retention time (SRT) required for HiCS can significantly affect sludge floc stability and flocculation performance, warranting a deeper analysis of the factors influencing these characteristics. This study investigates the impact of SRT reduction on sludge performance, focusing on energy potential, viscoelasticity, and critical pressure. The analysis was conducted using rheological tests, contact angle measurements, zeta potential analysis, Fourier transform infrared spectroscopy, XDLVO theory, and the PARAFAC model. Results indicate that due to the contribution of hydrophobicity, the HiCS system maintained the large flocs morphology of the sludge even when the SRT was maintained for 2d. However, a combination of aerobic microbial activity, high concentrations of loosely bound extracellular polymeric substances, and the presence of the filamentous bacterium Thiothrix contributed to reduced flocculation performance.
Keyword ：
High-rate contact stabilization High-rate contact stabilization Sludge retention time Sludge retention time Flocculation Flocculation Floc stability Floc stability Hydrophobicity Hydrophobicity
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| GB/T 7714 | Fu, Sibo , Li, Dong , Fu, Kunming et al. Towards a high-rate operation of contact stabilization process: Challenges of flocculation and floc stability [J]. | JOURNAL OF ENVIRONMENTAL MANAGEMENT , 2024 , 370 . |
| MLA | Fu, Sibo et al. "Towards a high-rate operation of contact stabilization process: Challenges of flocculation and floc stability" . | JOURNAL OF ENVIRONMENTAL MANAGEMENT 370 (2024) . |
| APA | Fu, Sibo , Li, Dong , Fu, Kunming , Zhu, Yanjun , Yang, Sen , Zhang, Xiaohang et al. Towards a high-rate operation of contact stabilization process: Challenges of flocculation and floc stability . | JOURNAL OF ENVIRONMENTAL MANAGEMENT , 2024 , 370 . |
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Abstract ：
The organic carbon in wastewater is a potential resource. Using sludge as a carrier for organic carbon in hydrolysis acidification and anaerobic digestion maximizes utilizing organic carbon resources and reduces sludge. Organic carbon capture systems must be established to enrich the sludge with additional organic carbon. This review systematically expounds on the mechanism and processes of organic carbon capture. However, the organic carbon capture process still needs several challenges, as evidenced by the low carbon capture efficiency, the loss of organic carbon due to mineralization, and the reduction in overall system operational efficiency due to the degradation of sludge settling performance. A method to improve carbon capture efficiency and stabilize sludge settling performance through enhanced extracellular polymeric substances secretion is clarified. A carbon capture coupled partial nitrification-anammox and denitrification phosphorus removal-endogenous partial denitrification process is proposed for nutrient removal in a carbon capture system for the first time. In this way, the demand for organic carbon in the nutrient removal process is reduced, and energy consumption for aeration is saved.
Keyword ：
Extracellular polymeric substance Extracellular polymeric substance Endogenous partial denitrification Endogenous partial denitrification Sludge utilization Sludge utilization Partial nitrification-anammox Partial nitrification-anammox Denitrifying phosphorus removal Denitrifying phosphorus removal Carbon capture Carbon capture
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| GB/T 7714 | Fu, S. , Li, D. , Zhang, J. . A review of the eco-revolution of organic carbon capture in wastewater treatment: limitations and coupled processes [J]. | INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY , 2024 . |
| MLA | Fu, S. et al. "A review of the eco-revolution of organic carbon capture in wastewater treatment: limitations and coupled processes" . | INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY (2024) . |
| APA | Fu, S. , Li, D. , Zhang, J. . A review of the eco-revolution of organic carbon capture in wastewater treatment: limitations and coupled processes . | INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY , 2024 . |
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Abstract ：
为了抑制亚硝酸盐氧化菌(NOB)的生长繁殖,采用序批式反应器(SBR)运行PN1/PN2系统,设置4组反应器R1～R4,分别设置连续运行段和交替饥饿/恢复运行段.饥饿期溶解氧(DO)浓度分别设置为(1±0.5),(2±0.5),(3±0.5),(4±0.5)mg/L,探讨交替周期的选取、饥饿期DO条件对功能菌活性、污泥浓度、粒径及胞外聚合物(EPS)的影响,以期实现部分硝化段的稳定运行.结果显示,相比于好氧氨氧化菌(AOB),NOB在面对饥饿时表现得更为敏感,活性衰减速率更高,恢复期前3d AOB的活性恢复速率高于NOB,因此3d的交替周期能够有效抑制NOB并保留AOB活性.采用交替周期为3d的交替饥饿/恢复策略进行70d的运行,4组反应器的亚硝酸盐氮积累率(NAR)分别达到73.36%、84.43%、91.21%、95.97%,运行过程中出现了污泥减量化的现象,但经过一段时间的适应后R1～R3的污泥浓度能够保持稳定,而R4则呈下降趋势;交替饥饿/恢复策略使系统逐渐排除沉降性能较差的絮体,而沉降性能好的污泥留在反应器内,第70d 4个反应器的污泥粒径分别达到190.69,197.56,207.69,153.56μm;环境变化刺激微生物分泌更多EPS,因此4组反应器污泥的EPS含量都呈现不同幅度的升高.实验结果表明交替饥饿/恢复策略可以刺激污泥产生有利的变化,实现有效的NOB抑制以及稳定的NO_2~--N积累.
Keyword ：
厌氧氨氧化 厌氧氨氧化 活性抑制 活性抑制 饥饿 饥饿 好氧氨氧化菌 好氧氨氧化菌 亚硝酸盐氧化菌 亚硝酸盐氧化菌 短程硝化 短程硝化
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| GB/T 7714 | 李冬 , 任纪元 , 张杰 . 交替饥饿下PN1/PN2系统抑制NOB研究 [J]. | 中国环境科学 , 2024 , 44 (01) : 202-210 . |
| MLA | 李冬 et al. "交替饥饿下PN1/PN2系统抑制NOB研究" . | 中国环境科学 44 . 01 (2024) : 202-210 . |
| APA | 李冬 , 任纪元 , 张杰 . 交替饥饿下PN1/PN2系统抑制NOB研究 . | 中国环境科学 , 2024 , 44 (01) , 202-210 . |
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Abstract ：
微腔是一种常见的微通道结构,具有诱发流动分离形成层流涡的特性。研究微腔涡流动对理解微流控粒子分选、毛细血管生成和肺泡流动等相关微尺度流动现象具有重要意义。本文针对矩形微腔内层流涡流动及输运特性,利用显微高速摄影技术,开展了微通道主流与微腔涡流动及输运现象的染料可视化实验,探讨了染料脉线形成的"涡钩子"现象以及机理,初步揭示了微腔涡的流动及输运机理,为理解微腔流动现象及相关应用提供参考。
Keyword ：
涡 涡 "涡钩子" "涡钩子" 微流控 微流控 微腔 微腔 边界线 边界线
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| GB/T 7714 | 张越东 , 申峰 , 张杰 et al. 矩形微腔内“涡钩子”现象的实验研究 [C] //北京力学会第30届学术年会 . 2024 . |
| MLA | 张越东 et al. "矩形微腔内“涡钩子”现象的实验研究" 北京力学会第30届学术年会 . (2024) . |
| APA | 张越东 , 申峰 , 张杰 , 刘赵淼 . 矩形微腔内“涡钩子”现象的实验研究 北京力学会第30届学术年会 . (2024) . |
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Abstract ：
微流控技术由于具备操控微通道中微小体积流体的能力,已成为操控粒子和细胞的新平台.基于粒子惯性迁移和微凹槽涡胞捕获的粒子分选方法,是一种重要的微流控粒子操控技术.目前,微凹槽容纳的粒子数量不高,制约了该方法的效率.为了提高微凹槽粒子容量,对圆形微凹槽进行结构设计,并利用高速显微成像技术和数值模拟,研究了不同圆形微凹槽的粒子容纳能力.研究发现,相同入口雷诺数(Re=37～555)下,带底腔的圆形微凹槽相较于普通圆形微凹槽容纳的粒子数量提升了 45%,这是因为增加底腔后使得涡流线向下延展,形成更深的"U形"结构,可以容纳更多的粒子;当Re=482 时,带底腔的直径 500 μm的圆凹槽比直径 600 μm的圆凹槽的粒子容量提高了 93.9%,原因是前者凹槽内粒子运动轨道与流线更加吻合,粒子轨道面积与凹槽面积占比达到了 97%;随着Re增加,从侧通道收集到的粒子富集浓度整体呈现先缓慢增大后减小的趋势,收集到的20 μm粒子的最大富集浓度为初始悬浮液的 126.7 倍;不同微凹槽内粒子群的轨道运动受到涡流场特性、粒子物性及粒子间相互作用和壁面限制作用等因素的共同影响.研究结果对微凹槽结构设计和提高粒子分选性能有重要指导意义.
Keyword ：
粒子捕获 粒子捕获 涡胞 涡胞 微凹槽 微凹槽 微流控技术 微流控技术 粒子分选 粒子分选
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| GB/T 7714 | 申峰 , 张杰 , 艾明珠 et al. 微流控粒子分选中圆形微凹槽容纳特性研究 [J]. | 力学学报 , 2024 , 56 (5) : 1317-1327 . |
| MLA | 申峰 et al. "微流控粒子分选中圆形微凹槽容纳特性研究" . | 力学学报 56 . 5 (2024) : 1317-1327 . |
| APA | 申峰 , 张杰 , 艾明珠 , 张越东 , 刘赵淼 . 微流控粒子分选中圆形微凹槽容纳特性研究 . | 力学学报 , 2024 , 56 (5) , 1317-1327 . |
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Abstract ：
This article adopts the strategy of adding biochar and increasing HRT to accelerate the performance and particle morphology recovery of anaerobic ammonia oxidation granular sludge stored at room temperature for 68 days. The results showed that biochar accelerated the death of heterotrophic bacteria, shortened the cell lysis and lag period of the recovery process by 4 days, and it only took 28 days for the nitrogen removal performance of the reactor to recover to the original level, and 56 days for re-granulation. Biochar promoted the secretion of EPS (56.96 mg gVSS-1), and the sludge volume and nitrogen removal performance of the bioreactor remain stable. Biochar also accelerated the growth of Anammox bacteria. The abundance of Anammox bacteria in the biochar reactor reached 38.76% on the 28th day. The high abundance of functional bacteria and the optimized community structure of biochar made system (Candidatus_Kuenenia: 38.30%) more risk-resistant than control reactor.
Keyword ：
Sludge reactivation Sludge reactivation Stratified EPS Stratified EPS Biological carbon Biological carbon Anammox Anammox
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| GB/T 7714 | Li, Dong , Dong, Yiwen , Li, Shuai et al. Biological carbon promotes the recovery of anammox granular sludge after starvation [J]. | BIORESOURCE TECHNOLOGY , 2023 , 384 . |
| MLA | Li, Dong et al. "Biological carbon promotes the recovery of anammox granular sludge after starvation" . | BIORESOURCE TECHNOLOGY 384 (2023) . |
| APA | Li, Dong , Dong, Yiwen , Li, Shuai , Jiang, Pengfei , Zhang, Jie . Biological carbon promotes the recovery of anammox granular sludge after starvation . | BIORESOURCE TECHNOLOGY , 2023 , 384 . |
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Abstract ：
Under organic stress, the limited filamentous bulking (FB) was demonstrated to improve anammox capability by inhibiting granule disintegration and washout. The accumulation of internal stress played a more important role than the adverse physicochemical properties (low viscoelasticity and hydrophobicity) of granules in limiting granular strength by consuming the granular elastic energy. Different from the floc-forming heterotrophic bacteria (HB) that stored its growth stress as internal stress by pushing the surrounded anammox micro-colonies outwards under the spatial constraint of elastic anammox "shell", the filamentous HB grew into a uniform network structure within granules, endowed granules low internal stress and acted as the granular skeleton due to its rich amyloid substance, which was benefited from the elimination of inhomogeneous growth and the consequent expansion competition for living space. Combined with the mechanical instability and sticking-spring models, controlling FB at limited level was effective for improving granular strength without affecting sludge -water separation.
Keyword ：
Internal stress Internal stress Viscoelasticity Viscoelasticity Inhomogeneous growth Inhomogeneous growth Biomechanics Biomechanics Stress relaxation Stress relaxation
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| GB/T 7714 | Wei, Ziqing , Li, Dong , Li, Shuai et al. Improving mechanical stability of anammox granules with organic stress by limited filamentous bulking [J]. | BIORESOURCE TECHNOLOGY , 2023 , 370 . |
| MLA | Wei, Ziqing et al. "Improving mechanical stability of anammox granules with organic stress by limited filamentous bulking" . | BIORESOURCE TECHNOLOGY 370 (2023) . |
| APA | Wei, Ziqing , Li, Dong , Li, Shuai , Hao, Tongyao , Zeng, Huiping , Zhang, Jie . Improving mechanical stability of anammox granules with organic stress by limited filamentous bulking . | BIORESOURCE TECHNOLOGY , 2023 , 370 . |
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Abstract ：
为构建同步硝化内源反硝化除磷颗粒污泥系统,设置四组厌氧/好氧/缺氧(AOA)以及不同后置曝气时间(5min、10min、20min)的AOA-O序批式反应器,探究不同运行模式下污泥颗粒化和反硝化聚磷菌(DPAOs)富集情况.结果表明,后置短时曝气的反应器颗粒污泥结构致密、沉淀性能良好,可强化内碳源储存并分泌更多的胞外聚合物(EPS),具有更高的脱氮除磷率及DPAOs占比.其中,短时曝气时间10min的R3生物量最高,平均粒径最大,达到986μm,颗粒成熟且稳定.批次试验和三维荧光分析表明其聚磷菌中45.85%为DPAOs且EPS含量最高.稳定运行期间,R3的COD、TN、TP去除率分别为94.13%、89.41%、96.11%,内碳源储存效率为98.09%,具有良好的处理性能.
Keyword ：
好氧颗粒污泥 好氧颗粒污泥 内源反硝化 内源反硝化 脱氮除磷 脱氮除磷 反硝化聚磷菌 反硝化聚磷菌
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| GB/T 7714 | 张杰 , 杨杰 , 李冬 et al. AOA-O模式下好氧颗粒污泥同步硝化内源反硝化除磷 [J]. | 中国环境科学 , 2023 , 43 (10) : 5226-5234 . |
| MLA | 张杰 et al. "AOA-O模式下好氧颗粒污泥同步硝化内源反硝化除磷" . | 中国环境科学 43 . 10 (2023) : 5226-5234 . |
| APA | 张杰 , 杨杰 , 李冬 , 高鑫 . AOA-O模式下好氧颗粒污泥同步硝化内源反硝化除磷 . | 中国环境科学 , 2023 , 43 (10) , 5226-5234 . |
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Abstract ：
Chemical conditioning emerges as a pivotal determinant in augmenting sludge dewatering performance. In the realm of frequently employed aluminum chloride polymer conditioners, the impact of hydroxyaluminum is noteworthy. Beyond influencing dewatering efficacy, it introduces chloride ions, precipitating a cascade of subsequent treatment challenges. In this study, we investigated the dewatering efficiency of coagulants with varying aluminum speciation contents. Notably, the coagulant predominantly composed of medium polymeric aluminum (Alb) demonstrated superiority at a dosage of 0.08 g Al/g TSS, exhibiting favorable outcomes in terms of capillary suction time and specific resistance to filtration, measured at 22.3 s and 4.02 x 1012 m 1/kg 1, respectively. These values were notably lower compared to those obtained with low-polymerization state aluminum (Ala) at 25.2 s and 6.04 x 1012 m 1/kg 1, as well as high polymorphic aluminum (Alc) at 25.8 s and 4.69 x 1012 m 1/kg 1. It was attributed to multifactor (high charge density, high protein conversion efficiency, distinct pore drainage structures of microchannels, etc.). The investigation underscored that the predominant elevation in chloride ion content within the sludge system was primarily attributed to the dosing of poly aluminum chloride. Furthermore, the subsequent application of coagulant aids, such as cationic polyacrylamides and CaO, significantly influenced the chloride ion content within the sludge cake, thereby modulating dewatering efficiency and the subsequent disposal of sludge. Therefore, strategically managing aluminum forms and coagulant aids can optimize sludge dewatering efficiency and subsequent disposal processes.
Keyword ：
Chemical conditioning Chemical conditioning Extracellular polymeric substances Extracellular polymeric substances Physicochemical characteristics Physicochemical characteristics Sludge dewatering Sludge dewatering Chloride ions Chloride ions
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| GB/T 7714 | Zhu, Yanjun , Li, Hongyun , Yang, Peng et al. Aluminum speciation in polymerized aluminum chloride: Roles and chloride ion migration in sludge dewatering [J]. | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING , 2023 , 12 (1) . |
| MLA | Zhu, Yanjun et al. "Aluminum speciation in polymerized aluminum chloride: Roles and chloride ion migration in sludge dewatering" . | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING 12 . 1 (2023) . |
| APA | Zhu, Yanjun , Li, Hongyun , Yang, Peng , Li, Dong , Wang, Ziyan , Qi, Yunpeng et al. Aluminum speciation in polymerized aluminum chloride: Roles and chloride ion migration in sludge dewatering . | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING , 2023 , 12 (1) . |
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