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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 ：
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 ：
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 ：
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 ：
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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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 ：
Nano-zero-valent iron (nZVI), as a typical nano-material, has been recently used in wastewater treatment and combination with bioreactors. Using nZVI coupled denitrification system research the effect and influence of nZVI enhanced denitrification sludge on the degradation of toxic compounds and system performance. The nZVI coupled denitrification system showed better resistance to 2,6-DCP impact, and the concentrations of effluent NO2- and NO3- were below 2.0 mg/L. At the same time, the addition of nZVI enabled the denitrification system to quickly adapt to the toxic environment of 2,6-DCP within 15 days, and the degradation efficiency of 2,6-DCP reached 99.9%. The released SMP reduced after nZVI coupled with denitrification sludge in 2,6-DCP environment, which could improve the effluent water quality. Nuclear magnetic resonance spectroscopy showed that the addition of nZVI would change the structure of EPS in denitrification sludge. After 90 days of operation, the dominant bacteria in the denitrifying sludge have undergone great changes. Moreover, Thauera was responsible as the dominant bacteria for degrading 2,6-DCP in the denitrification system. The increased in the proportion of functional bacteria with nitrate_reduction, nitrogen_respiration, nitrate_respiration and nitrite_respiration in the presence of NZVI further reveals the mechanism of enhanced denitrification.
Keyword ：
Nano-zero-valent iron Nano-zero-valent iron Denitrification Denitrification Microbial structure Microbial structure Molecular weight Molecular weight 2,6-dichlorophenol 2,6-dichlorophenol
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| GB/T 7714 | Li, Mingrun , Wei, Dong , Zhang, Zhaoran et al. Enhancing 2,6-dichlorophenol degradation and nitrate removal in the nano-zero-valent iron (nZVI) solid-phase denitrification system [J]. | CHEMOSPHERE , 2022 , 287 . |
| MLA | Li, Mingrun et al. "Enhancing 2,6-dichlorophenol degradation and nitrate removal in the nano-zero-valent iron (nZVI) solid-phase denitrification system" . | CHEMOSPHERE 287 (2022) . |
| APA | Li, Mingrun , Wei, Dong , Zhang, Zhaoran , Fan, Dawei , Du, Bin , Zeng, Huiping et al. Enhancing 2,6-dichlorophenol degradation and nitrate removal in the nano-zero-valent iron (nZVI) solid-phase denitrification system . | CHEMOSPHERE , 2022 , 287 . |
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Abstract ：
A novel strategy combining aerobic starvation and free ammonia (FA) was proposed to achieve partial nitrifi-cation (PN). The impact of the combined strategy on nitrifying bacteria was explored in a 200-day experiment. The effluent concentration of ammonia was below the detection limits (0.1 mg/L), and the effluent concentration of nitrite and nitrate was 68.12 mg/L and 3.46 mg/L without adding carbon source to the artificial wastewater. The nitrite accumulation rate (NAR) was maintained at 90.15% even when the dissolved oxygen (DO) con-centration was 1.50 mg/L. Further analysis showed that PN was achieved by selectively restoring the activity of ammonia-oxidizing bacteria (AOB) in nitrifying bacteria that had lost their activity after starvation. The specific ammonia oxidation rate (SAOR) was 46.25 mg N/g MLVSS/h, and the specific nitrate product rate (SNPR) was only 0.73 mg N/g MLVSS/h in the stable operation stage. The increase in AOB abundance (from 2.79% to 7.13%) and the decrease in nitrite-oxidizing bacteria (NOB) abundance (from 8.75% to 1.44%) explained this phe-nomenon. Finally, the analyses on the secretion of extracellular polymer substance (EPS), strategies to resist harsh environments, and physical properties of sludge explored the potential mechanism and provided references for applying the combined strategy.
Keyword ：
Starvation Starvation Mechanism Mechanism Free ammonia Free ammonia Partial nitrification Partial nitrification
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| GB/T 7714 | Li, Dong , Chen, Hao , Gao, Xin et al. Achieving PN through the selective recovery of AOB activity in inactivated nitrifying bacteria: Combined aerobic starvation and FA [J]. | JOURNAL OF ENVIRONMENTAL MANAGEMENT , 2022 , 321 . |
| MLA | Li, Dong et al. "Achieving PN through the selective recovery of AOB activity in inactivated nitrifying bacteria: Combined aerobic starvation and FA" . | JOURNAL OF ENVIRONMENTAL MANAGEMENT 321 (2022) . |
| APA | Li, Dong , Chen, Hao , Gao, Xin , Zhang, Jie . Achieving PN through the selective recovery of AOB activity in inactivated nitrifying bacteria: Combined aerobic starvation and FA . | JOURNAL OF ENVIRONMENTAL MANAGEMENT , 2022 , 321 . |
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Abstract ：
An application challenge of anaerobic ammonia oxidation (anammox) is the slow proliferation rate of anaerobic ammonium oxidation bacteria (AnAOB). This study adopted negative pressure coupled with the direct-current electric field (NP–DCEF) to evaluate system nitrogen removal performance. Results showed that the total nitrogen removal rate (TNRR) of the NP–DCEF system was stable at 88.6% after seven days. Compared with that of the ordinary operating system (45.4%), the relative abundance of Candidatus–kuenenia considerably increased from 51.9% to 57.6%. Under transient and long-term influent fluctuation, the NP–DCEF system showed high nitrogen removal performance. The specific activity of AnAOB (SAA) reached 11.0 mg N∙g Vss−1 h−1 under load fluctuation, and it was 8.7 mg N∙g Vss−1 h−1 under ordinary operational conditions. In addition, the specific activities of hydrazine dehydrogenase (HDH) and hydrazine synthetase (HZS) reached 32.66 and 92.95 U∙L−1, which are considerably higher than those under the ordinary operating conditions (18.41 and 63.20 U∙L−1). These results indicated that the novel operation strategy has specific feasibility and potential for the start-up and long-term operation of anammox. © 2022 Elsevier Ltd
Keyword ：
Anammox; AnAOB; Direct-current electric field; Fluctuation; Negative pressure; Specific activity Anammox; AnAOB; Direct-current electric field; Fluctuation; Negative pressure; Specific activity
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| GB/T 7714 | Li, D. , Dang, Z. , Zhang, J. . Novel strategy for rapid start-up and stable operation of anammox: Negative pressure coupled with the direct-current electric field [J]. | Journal of Environmental Management , 2022 , 315 . |
| MLA | Li, D. et al. "Novel strategy for rapid start-up and stable operation of anammox: Negative pressure coupled with the direct-current electric field" . | Journal of Environmental Management 315 (2022) . |
| APA | Li, D. , Dang, Z. , Zhang, J. . Novel strategy for rapid start-up and stable operation of anammox: Negative pressure coupled with the direct-current electric field . | Journal of Environmental Management , 2022 , 315 . |
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