Water Science and Technology最新文献_第8页

Understanding water dynamics in Dal Lake: a comprehensive analysis of physiological parameters and seasonal variations. 了解达尔湖水动态：生理参数和季节变化的综合分析。

IF 2.5 4区环境科学与生态学

Water Science and Technology Pub Date : 2024-08-01 Epub Date: 2024-08-02 DOI: 10.2166/wst.2024.258

Seerat Sultan, Shruti Singh, Rajesh Kumar, Showkat A Malik, Javaid Hassan Sheikh, Amrit Sudershan

{"title":"Understanding water dynamics in Dal Lake: a comprehensive analysis of physiological parameters and seasonal variations.","authors":"Seerat Sultan, Shruti Singh, Rajesh Kumar, Showkat A Malik, Javaid Hassan Sheikh, Amrit Sudershan","doi":"10.2166/wst.2024.258","DOIUrl":"https://doi.org/10.2166/wst.2024.258","url":null,"abstract":"Maintaining the standard of water quality in an aquatic habitat necessitates continual assessment of its physicochemical properties. The purpose of this study was to evaluate physicochemical properties and to discuss the causes of spatiotemporal variability in key physicochemical parameters at five different locations of Dal Lake. Water samples were collected in four seasons for 3 years (i.e., January 2019-December 2021) to evaluate various physicochemical properties using standard methods. The analysis shows that the macrophytic development has increased due to organic and inorganic load, leading to the Lake's deterioration. The analysis indicates positive and negative correlations among various parameters across five sampling sites. Principal component analysis shows that two components (PC1 and PC2) explain 47.35, 47.54, and 48.11% of the variability in the years 2019, 2020, and 2021, respectively. From 2019 to 2021, the continuous decrease in dissolved oxygen and increased levels of magnesium, conductivity, alkalinity, total hardness, calcium hardness, total phosphorus, and nitrate-nitrogen suggest a trend toward eutrophication in the lake.","PeriodicalId":23653,"journal":{"name":"Water Science and Technology","volume":"90 4","pages":"1250-1266"},"PeriodicalIF":2.5,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142112613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Full-scale study on high-rate low-temperature anaerobic digestion of agro-food wastewater: process performances and microbial community. 农业食品废水高速低温厌氧消化全规模研究：工艺性能和微生物群落。

IF 2.5 4区环境科学与生态学

Water Science and Technology Pub Date : 2024-08-01 Epub Date: 2024-08-06 DOI: 10.2166/wst.2024.272

Lara M Paulo, Yu-Chen Liu, Juan Castilla-Archilla, Javier Ramiro-Garcia, Dermot Hughes, Thérèse Mahony, B Conall Holohan, Paul Wilmes, Vincent O'Flaherty

{"title":"Full-scale study on high-rate low-temperature anaerobic digestion of agro-food wastewater: process performances and microbial community.","authors":"Lara M Paulo, Yu-Chen Liu, Juan Castilla-Archilla, Javier Ramiro-Garcia, Dermot Hughes, Thérèse Mahony, B Conall Holohan, Paul Wilmes, Vincent O'Flaherty","doi":"10.2166/wst.2024.272","DOIUrl":"https://doi.org/10.2166/wst.2024.272","url":null,"abstract":"The fast-growing global population has led to a substantial increase in food production, which generates large volumes of wastewater during the process. Despite most industrial wastewater being discharged at lower ambient temperatures (<20 °C), majority of the high-rate anaerobic reactors are operated at mesophilic temperatures (>30 °C). High-rate low-temperature anaerobic digestion (LtAD) has proven successful in treating industrial wastewater both at laboratory and pilot scales, boasting efficient organic removal and biogas production. In this study, we demonstrated the feasibility of two full-scale high-rate LtAD bioreactors treating meat processing and dairy wastewater, and the microbial communities in both reactors were examined. Both reactors exhibited rapid start-up, achieving considerable chemical oxygen demand (COD) removal efficiencies (total COD removal >80%) and generating high-quality biogas (CH4% in biogas >75%). Long-term operations (6-12 months) underscored the robustness of LtAD bioreactors even during winter periods (average temperature <12 °C), as evidenced by sustained high COD removal rates (total COD removal >80%). The stable performance was underpinned by a resilient microbial community comprising active acetoclastic methanogens, hydrolytic, and fermentative bacteria. These findings underscore the feasibility of high-rate low-temperature anaerobic wastewater treatment, offering promising solutions to the zero-emission wastewater treatment challenge.","PeriodicalId":23653,"journal":{"name":"Water Science and Technology","volume":"90 4","pages":"1239-1249"},"PeriodicalIF":2.5,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142112604","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Wastewater treatment process using immobilized microalgae. 使用固定微藻的废水处理工艺。

IF 2.5 4区环境科学与生态学

Water Science and Technology Pub Date : 2024-08-01 Epub Date: 2024-08-14 DOI: 10.2166/wst.2024.283

Ihana Aguiar Severo, Otto Gustavo de Avila Azevedo, Paulo Alexandre Silveira da Silva, Beatriz Jacob-Furlan, André Bellin Mariano, Juan C Ordonez, José Viriato Coelho Vargas

{"title":"Wastewater treatment process using immobilized microalgae.","authors":"Ihana Aguiar Severo, Otto Gustavo de Avila Azevedo, Paulo Alexandre Silveira da Silva, Beatriz Jacob-Furlan, André Bellin Mariano, Juan C Ordonez, José Viriato Coelho Vargas","doi":"10.2166/wst.2024.283","DOIUrl":"https://doi.org/10.2166/wst.2024.283","url":null,"abstract":"Microalgae biomass products are gaining popularity due to their diverse applications in various sectors. However, the costs associated with media ingredients and cell harvesting pose challenges to the scale-up of microalgae cultivation. This study evaluated the growth and nutrient removal efficiency (RE) of immobilized microalgae Tetradesmus obliquus in sodium alginate beads cultivated in swine manure-based wastewater compared to free cells. The main findings of this research include (i) immobilized cells outperformed free cells, showing approximately 2.3 times higher biomass production, especially at 10% effluent concentration; (ii) enhanced organic carbon removal was observed, with a significant 62% reduction in chemical oxygen demand (383.46-144.84 mg L-1) within 48 h for immobilized cells compared to 6% in free culture; (iii) both immobilized and free cells exhibited efficient removal of total nitrogen and total phosphorus, with high REs exceeding 99% for phosphorus. In addition, microscopic analysis confirmed successful cell dispersion within the alginate beads, ensuring efficient light and substrate transfer. Overall, the results highlight the potential of immobilization techniques and alternative media, such as biodigested swine manure, to enhance microalgal growth and nutrient RE, offering promising prospects for sustainable wastewater treatment processes.","PeriodicalId":23653,"journal":{"name":"Water Science and Technology","volume":"90 4","pages":"1306-1320"},"PeriodicalIF":2.5,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142112615","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Numerical simulation of pressure loss and flow characteristics in combined elbow pipes for solid-liquid two-phase flow. 固液两相流组合弯管中压力损失和流动特性的数值模拟。

IF 2.5 4区环境科学与生态学

Water Science and Technology Pub Date : 2024-08-01 DOI: 10.2166/wst.2024.262

Xi Shi, Yuanyuan Chai, Hui Chen, Hu Tao, Qianwen Jin

{"title":"Numerical simulation of pressure loss and flow characteristics in combined elbow pipes for solid-liquid two-phase flow.","authors":"Xi Shi, Yuanyuan Chai, Hui Chen, Hu Tao, Qianwen Jin","doi":"10.2166/wst.2024.262","DOIUrl":"https://doi.org/10.2166/wst.2024.262","url":null,"abstract":"The transport of solid-liquid two-phase flow is widely used in water conservancy, environmental protection, and municipal engineering. Accurate pressure loss calculation is crucial for hydraulic transport pipelines, particularly in the case of bends, valves, and other deformation parts. These factors directly impact the energy consumption and the investment of the system. This paper employed the Euler-Euler multiphase flow model to investigate the characteristics of solid-liquid two-phase flow in vertically positioned combined elbows. The model was initially validated using data from the literature. Subsequently, based on the validated model, an investigation was conducted to determine the relationship between pressure loss and various factors, including flow velocity, combined angle, particle concentration, and particle size. Finally, the changes in velocity distribution, particle concentration, and turbulent kinetic energy were analyzed. The results indicate that the pressure loss increases with the flow velocity, tends to decrease with the combined angle, and increases with the particle concentration. The relationship between pressure loss and particle size is more complex. The velocity distribution, particle concentration, and turbulent kinetic energy exhibit the variations caused by different factors.","PeriodicalId":23653,"journal":{"name":"Water Science and Technology","volume":"90 4","pages":"1099-1114"},"PeriodicalIF":2.5,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142112608","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Performance evaluation of ICX reactor in treatment of paper mill wastewater: a case study in South Vietnam. ICX 反应器处理造纸厂废水的性能评估：南越案例研究。

IF 2.5 4区环境科学与生态学

Water Science and Technology Pub Date : 2024-08-01 Epub Date: 2024-08-12 DOI: 10.2166/wst.2024.273

Tuan Minh Truong Dang, Ha Manh Bui

{"title":"Performance evaluation of ICX reactor in treatment of paper mill wastewater: a case study in South Vietnam.","authors":"Tuan Minh Truong Dang, Ha Manh Bui","doi":"10.2166/wst.2024.273","DOIUrl":"https://doi.org/10.2166/wst.2024.273","url":null,"abstract":"This study evaluates the performance of the Internal Circulation eXperience (ICX) reactor in treating high-strength paper mill wastewater in the south of Vietnam. The ICX reactor effectively managed organic concentrations (sCOD) of up to 11,800 mg/L. Results indicate a volumetric loading rate (VLR) of 26.8 kg/m3 × day, achieving processing efficiency exceeding 81% while consistently maintaining volatile fatty acids (VFA) below 300 mg/L. The study employed Monod and Stover-Kincannon kinetic modeling, revealing dynamic parameters including Ks = 56.81 kg/m3, Y = 0.121 kgVSS/kgsCOD, Kd = 0.0242 1/day, μmax = 0.372 1/day, Umax = 151 kg/m3 × day, and KB = 175.92 kg/m3 × day, underscoring the ICX reactor's superior efficiency compared to alternative technologies. Notably, the reactor's heightened sensitivity to VFA levels necessitates influent concentrations below 1,400 mg/L for effective sludge treatment. Furthermore, the influence of calcium on treatment efficiency requires post-treatment alkalinity maintenance below 19 meq/L to stabilize MLVSS/MLSS concentration. Biogas production ranged from 0.6 to 0.7 Nm3 biogas/kg sCOD; however, calcium impact diminished this ratio, reducing overall treatment efficiency and biogas production. The study contributes valuable insights into anaerobic treatment processes for complex industrial wastewaters, emphasizing the significance of controlling VFA, calcium, and alkalinity for optimal system performance.","PeriodicalId":23653,"journal":{"name":"Water Science and Technology","volume":"90 4","pages":"1115-1131"},"PeriodicalIF":2.5,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142112611","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Activated persulfate for efficient bisphenol A degradation via nitrogen-doped Fe/Mn bimetallic biochar. 通过氮掺杂的铁/锰双金属生物炭实现活性过硫酸盐对双酚 A 的高效降解。

IF 2.5 4区环境科学与生态学

Water Science and Technology Pub Date : 2024-08-01 Epub Date: 2024-08-12 DOI: 10.2166/wst.2024.275

Zexian Cao, Changhe Yang, Wenqiang Zhang, Huiliang Shao

{"title":"Activated persulfate for efficient bisphenol A degradation via nitrogen-doped Fe/Mn bimetallic biochar.","authors":"Zexian Cao, Changhe Yang, Wenqiang Zhang, Huiliang Shao","doi":"10.2166/wst.2024.275","DOIUrl":"https://doi.org/10.2166/wst.2024.275","url":null,"abstract":"To achieve the purpose of treating waste by waste, in this study, a nitrogen-doped Fe/Mn bimetallic biochar material (FeMn@N-BC) was prepared from chicken manure for persulfate activation to degrade Bisphenol A (BPA). The FeMn@N-BC was characterized by scanning electron microscopy (SEM), X-ray diffract meter (XRD), fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectrometer (XPS) and found that N doping can form larger specific surface area. Catalytic degradation experiments showed that Fe/Mn bimetal doping not only accelerated the electron cycling rate on the catalyst surface, but also makes the biochar magnetic and easy to separate, thus reducing environmental pollution. Comparative experiments was concluded that the highest degradation efficiency of BPA was achieved when the mass ratios of urea and chicken manure, Fe/Mn were 3:1 and 2:1, respectively, and the pyrolysis temperature was 800 °C, which can almost degrade all the BPA in 60 min. FeMn@N-BC/PS system with high catalytic efficiency and low consumables is promising for reuse of waste resources and the remediation of wastewater.","PeriodicalId":23653,"journal":{"name":"Water Science and Technology","volume":"90 4","pages":"1149-1163"},"PeriodicalIF":2.5,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142112592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Calcium oxide enhances the anaerobic co-digestion of excess sludge and plant waste: performance and mechanism. 氧化钙促进过量污泥和植物废弃物的厌氧共同消化：性能和机理。

IF 2.5 4区环境科学与生态学

Water Science and Technology Pub Date : 2024-08-01 Epub Date: 2024-08-05 DOI: 10.2166/wst.2024.268

Yongliang Wang, Kang Wang, Xiaohui Zhou, Bin Dai, Daozhong Du

{"title":"Calcium oxide enhances the anaerobic co-digestion of excess sludge and plant waste: performance and mechanism.","authors":"Yongliang Wang, Kang Wang, Xiaohui Zhou, Bin Dai, Daozhong Du","doi":"10.2166/wst.2024.268","DOIUrl":"https://doi.org/10.2166/wst.2024.268","url":null,"abstract":"The study investigates the effect of the oxidant calcium oxide (CaO) on the codigestion of excess sludge (ES) and plant waste (PW) under mesophilic anaerobic conditions to enhance methane production. The findings indicate that CaO significantly elevated methane yield in the codigestion system, with an optimum CaO addition of 6% resulting in a maximum methane production of 461 mL/g volatile solids, which is approximately 1.3 times that of the control group. Mechanistic exploration revealed that CaO facilitated the disintegration of organic matter, enhanced the release of soluble chemical oxygen demand, and increased the concentrations of soluble proteins and polysaccharides within the codigestion substrate. The presence of CaO was conducive to the generation and biological transformation of volatile fatty acids, with a notable accumulation of acetic acid, a smaller carboxylic acid within the VFAs. The proportion of acetate in the CaO-amended group increased to 32.6-36.9%. Enzymatic analysis disclosed that CaO enhanced the activity of hydrolytic and acidogenic enzymes associated with the ES and PW codigestion process but suppressed the activity of coenzyme F420. Moreover, CaO augmented the nutrient load in the fermentation liquid. The study provides an alternative scheme for the efficient resource utilization of ES and PW.","PeriodicalId":23653,"journal":{"name":"Water Science and Technology","volume":"90 4","pages":"1267-1279"},"PeriodicalIF":2.5,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142112594","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimizing intermittent micro-aeration as a strategy for enhancing aniline anaerobic biodegradation: kinetic, ecotoxicity, and microbial community dynamics analyses. 优化间歇微曝气，将其作为增强苯胺厌氧生物降解的一种策略：动力学、生态毒性和微生物群落动力学分析。

IF 2.5 4区环境科学与生态学

Water Science and Technology Pub Date : 2024-08-01 DOI: 10.2166/wst.2024.264

Isabelle Câmara, Victor Ventura de Souza, Ana Christina Brasileiro Vidal, Bruna Soares Fernandes, Fernanda Magalhães Amaral, Fabrício Motteran, Savia Gavazza

{"title":"Optimizing intermittent micro-aeration as a strategy for enhancing aniline anaerobic biodegradation: kinetic, ecotoxicity, and microbial community dynamics analyses.","authors":"Isabelle Câmara, Victor Ventura de Souza, Ana Christina Brasileiro Vidal, Bruna Soares Fernandes, Fernanda Magalhães Amaral, Fabrício Motteran, Savia Gavazza","doi":"10.2166/wst.2024.264","DOIUrl":"https://doi.org/10.2166/wst.2024.264","url":null,"abstract":"Groundwater and soil contamination by aromatic amines (AAs), used in the production of polymers, plastics, and pesticides, often results from improper waste disposal and accidental leaks. These compounds are resistant to anaerobic degradation; however, micro-aeration can enhance this process by promoting microbial interactions. In batch assays, anaerobic degradation of aniline (0.14 mM), a model AA, was tested under three micro-aeration conditions: T30, T15, and T10 (30, 15, and 10 min of micro-aeration every 2 h, respectively). Aniline degradation occurred in all conditions, producing both aerobic (catechol) and anaerobic (benzoic acid) byproducts. The main genera involved in T30 and T15 were Comamonas, Clostridium, Longilinea, Petrimonas, Phenylobacterium, Pseudoxanthomonas, and Thiobacillus. In contrast, in T10 were Pseudomonas, Delftia, Leucobacter, and Thermomonas. While T30 and T15 promoted microbial cooperation for anaerobic degradation and facultative respiration, T10 resulted in a competitive environment due to dominance and oxygen scarcity. Despite aniline degradation in 9.4 h under T10, this condition was toxic to Allium cepa seeds and exhibited cytogenotoxic effects. Therefore, T15 emerged as the optimal condition, effectively promoting anaerobic degradation without accumulating toxic byproducts. Intermittent micro-aeration emerges as a promising strategy for enhancing the anaerobic degradation of AA-contaminated effluents.","PeriodicalId":23653,"journal":{"name":"Water Science and Technology","volume":"90 4","pages":"1181-1197"},"PeriodicalIF":2.5,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142112610","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessment of water quality in wells and springs across various districts of Taza City, Morocco. 摩洛哥塔扎市各区水井和泉水水质评估。

IF 2.5 4区环境科学与生态学

Water Science and Technology Pub Date : 2024-08-01 Epub Date: 2024-08-05 DOI: 10.2166/wst.2024.270

Mohamed Ben Abbou, Loubna Bougarne, Imane Mehdaoui, Rachid Mahmoud, Zineb Majbar, Sanae Berrada, Zakia Rais, Mounia El Haji

引用次数: 0

Ni-P-PTFE cathode with low surface energy for enhancing electrochemical water softening performance. 用于提高电化学软化水性能的低表面能 Ni-P-PTFE 阴极。

IF 2.5 4区环境科学与生态学

Water Science and Technology Pub Date : 2024-08-01 Epub Date: 2024-08-06 DOI: 10.2166/wst.2024.271

Jingru Zhao, Lida Wang, Wen Sun, Zhengqing Yang, Xuesong Chen, Piji Zhang, Xu Chen, Jin Zhao, Jincheng Liu, Guichang Liu

引用次数: 0