Journal of water process engineering最新文献_第10页

Effects of natural pyrite and g-C3N4 constructed built-in electric field activated percarbonate on NOR removal: Mechanism, pathways, and toxicity analysis 天然黄铁矿和g-C3N4构建的内置电场激活过碳酸钙对NOR去除的影响：机制、途径和毒性分析

IF 6.7 2区工程技术

Journal of water process engineering Pub Date : 2026-03-01 Epub Date: 2026-02-03 DOI: 10.1016/j.jwpe.2026.109592

Shibo Ma , Yuxin Chen , Wenjun Li , Yue Wang , Lihong Hao , Tianwei Qian , Xiaona Liu

{"title":"Effects of natural pyrite and g-C3N4 constructed built-in electric field activated percarbonate on NOR removal: Mechanism, pathways, and toxicity analysis","authors":"Shibo Ma , Yuxin Chen , Wenjun Li , Yue Wang , Lihong Hao , Tianwei Qian , Xiaona Liu","doi":"10.1016/j.jwpe.2026.109592","DOIUrl":"10.1016/j.jwpe.2026.109592","url":null,"abstract":"<div><div>The advanced oxidation process (AOP) using sodium percarbonate (SPC) has attracted attention for water purification, but most SPC-based catalysts suffer from metal leaching, limited pH applicability, and low degradation efficiency, limiting their environmental use. In this study, a wet ball-milling technique was used to synthesize a natural pyrite and g-C<sub>3</sub>N<sub>4</sub>-based Fenton-like system with SPC, enabling rapid degradation of norfloxacin (NOR) under neutral conditions. Notably, with low concentrations of catalyst (0.5 g/L) and SPC (0.03 g/L), the degradation reaction rate constant (<em>k</em><sub>obs</sub>) for NOR reached 0.34354 min<sup>−1</sup>, far exceeding traditional Fenton-like reactions. DFT simulations and characterizations such as XPS and TEM indicate that the exceptional reactivity is due to the rectifying contact between pyrite@g-C<sub>3</sub>N<sub>4</sub> and SPC, which generates an internal electric field that enhances electron transfer, halogen bond cleavage, and reaction site exposure. This improves charge mobility, reactivity, and overcomes kinetic limitations of reductive systems. This work demonstrates the potential of natural pyrite in resource utilization and its ability to remove antibiotics from wastewater more efficiently and at a lower cost using iron-based catalysts without chemical synthesis.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"83 ","pages":"Article 109592"},"PeriodicalIF":6.7,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146190332","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of polyethylene microplastics on thermal properties of water and seawater: A novel detection method for microplastics and nanoplastics 聚乙烯微塑料对水和海水热性能的影响：一种新的微塑料和纳米塑料检测方法

IF 6.7 2区工程技术

Journal of water process engineering Pub Date : 2026-03-01 Epub Date: 2026-02-06 DOI: 10.1016/j.jwpe.2026.109601

Varadharaja Kirthika , Chanaka Galpaya , Ashan Induranga , Hasintha Wijesekara , Kaveenga Koswattage

{"title":"Influence of polyethylene microplastics on thermal properties of water and seawater: A novel detection method for microplastics and nanoplastics","authors":"Varadharaja Kirthika , Chanaka Galpaya , Ashan Induranga , Hasintha Wijesekara , Kaveenga Koswattage","doi":"10.1016/j.jwpe.2026.109601","DOIUrl":"10.1016/j.jwpe.2026.109601","url":null,"abstract":"<div><div>Accumulation of microplastics and nanoplastics in the water bodies has increased over past years. Microplastics and nanoplastics should be detected and removed from the aquatic environment to reduce the risk. The conventional detection methods are used to detect microplastics and nanoplastics. However, limitations and challenges exist with conventional methods. Thermal conductivity analysis is a novel and low-cost method for the identification of microplastics and nanoplastics in the aquatic environment. This study investigates the influence of the presence of polyethylene (PE) microplastics on the thermal properties of water and artificial seawater. The thermal conductivity of PE microplastics spiked water and artificial seawater with different concentrations (40, 80, 120 and 160 mg/L) was measured. Differential scanning calorimetry (DSC) analysis was conducted to analyze the thermal decomposition of PE microplastics. A scanning electron microscope (SEM) was used to detect the particle size and surface modification of PE microplastics those exposed to thermal conductivity measurement. The results showed that the reduced thermal conductivity was observed below 40 °C, and was enhanced above 40 °C. PE microplastics were fragmented above 40 °C, which was confirmed by the SEM analysis. DSC analysis showed endothermic and exothermic peaks at 41 °C and 58 °C, respectively. Due to the fragmentation occurring above 40 °C, the fragmented PE microplastics could have been involved in the Brownian motion and increased the thermal conductivity. This study proposes, thermal conductivity measurement can be used as a novel method to analyze microplastics due to their thermal insulation behavior and nanoplastics due to Brownian motion.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"83 ","pages":"Article 109601"},"PeriodicalIF":6.7,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146190600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Efficient degradation and detoxification of quinolone antibiotics using the novel biocatalyst BpLac@IPM 使用新型生物催化剂BpLac@IPM高效降解和解毒喹诺酮类抗生素

IF 6.7 2区工程技术

Journal of water process engineering Pub Date : 2026-03-01 Epub Date: 2026-01-31 DOI: 10.1016/j.jwpe.2026.109635

Hongjuan Zhu , Dan Zhou , Bianxia Li , FanYang , Yujie Chen , Jiashu Liu , Wanli Cheng , Huanan Li , Zhengbing Jiang

{"title":"Efficient degradation and detoxification of quinolone antibiotics using the novel biocatalyst BpLac@IPM","authors":"Hongjuan Zhu , Dan Zhou , Bianxia Li , FanYang , Yujie Chen , Jiashu Liu , Wanli Cheng , Huanan Li , Zhengbing Jiang","doi":"10.1016/j.jwpe.2026.109635","DOIUrl":"10.1016/j.jwpe.2026.109635","url":null,"abstract":"<div><div>A novel biocatalyst, <em>Bp</em>Lac@IPM, was constructed to enhance the remedi- ation of antibiotic wastewater. Compared with <em>Bp</em>Lac, <em>Bp</em>Lac@IPM showed better catalytic activity, stability, and reusability. Moreover, <em>Bp</em>Lac@IPM exhibited exceptional removal performance for quinolone antibiotics. Specifically, its ciprofloxacin removal efficiency reached 94.70%, which was 8.54% and 48.37% higher than that of <em>Bp</em>Lac and IPM, respectively. Furthermore, it effectively removed various quinolone antibiotics, including ciprofloxacin, norfloxacin, enrofloxacin, and moxifloxacin, with removal efficiencies ranging from 77.08% to 94.70%. Biotoxicity evaluation confirmed that <em>Bp</em>Lac@IPM treatment reduced the biotoxicity of ciprofloxacin. The biological toxicity of ciprofloxacin was 31% and 13% lower than that after IPM and <em>Bp</em>Lac treatment, respectively. Liquid chromatography-tandem mass spectrometry analysis identified the primary degradation pathways of ciprofloxacin as defluorination, decarboxylation, and cleavage of the piperazine ring. Further studies demonstrated a synergistic effect between adsorption and biocatalysis in <em>Bp</em>Lac@IPM, with a synergistic coefficient of 148.31% at 10 min. Mechanism analysis revealed that quinolone antibiotics were adsorbed onto <em>Bp</em>Lac@IPM via electrostatic attraction, hydrogen bonding, and hydrophilic interactions. Subsequently, the high concentration of quinolone antibiotics near <em>Bp</em>Lac@IPM promoted biocatalysis. This study provides a novel and efficient strategy for the removal and detoxification of quinolone antibiotics</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"83 ","pages":"Article 109635"},"PeriodicalIF":6.7,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146190630","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis of acrylic hydrogel-granulated manganese-based ion-sieve and its adsorption performance in Baqiancuo salt-lake brine 丙烯酸水凝胶-颗粒锰基离子筛的合成及其在八千错盐湖卤水中的吸附性能

IF 6.7 2区工程技术

Journal of water process engineering Pub Date : 2026-03-01 Epub Date: 2026-02-02 DOI: 10.1016/j.jwpe.2026.109647

Dawei Fang , Shilong Suo , Lijuan Liu , Donglu Fu , Zongren Song

{"title":"Synthesis of acrylic hydrogel-granulated manganese-based ion-sieve and its adsorption performance in Baqiancuo salt-lake brine","authors":"Dawei Fang , Shilong Suo , Lijuan Liu , Donglu Fu , Zongren Song","doi":"10.1016/j.jwpe.2026.109647","DOIUrl":"10.1016/j.jwpe.2026.109647","url":null,"abstract":"<div><div>The rapid development of lithium-ion battery-powered electric vehicles has triggered an unprecedented demand for lithium resources. Spinel-type manganese-based lithium ion-sieves (LMO) offer high Li<sup>+</sup> selectivity but suffer from severe manganese dissolution during acid elution, limiting sustainable recovery. This study modifies LMO using acrylic acid (AA) hydrogel granulation to enhance both adsorption and stability. Characterizations (XRD, FT-IR, SEM) confirm successful synthesis of granular GEL-LMO. AA gel not only acts as a binder but may also function as a structure-director and surface modifier: its three-dimensional network regulates the material's pore structure, facilitating mass transfer; its abundant carboxyl groups may introduce additional ion-exchange sites, potentially synergizing with LMO's intrinsic sites. In real brine (high Mg<sup>2+</sup>/Li<sup>+</sup>, multiple ions), GEL-LMO achieved a Li<sup>+</sup> adsorption capacity of 23.59 mg·g<sup>−1</sup> and a low Mn dissolution loss of 2.79% (<em>pH</em> = 12, <em>S/L</em> = 10 g·L<sup>−1</sup>, <em>T</em> = 25 °C). The process follows pseudo-second-order kinetics and the Langmuir isotherm, indicating monolayer chemisorption, and is spontaneous and endothermic. Compared to unmodified LMO, GEL-LMO shows superior capacity, cycling stability, ion selectivity (<em>α</em><sub><em>Li/Mg</em></sub> = 417.93), and significantly reduced Mn loss, demonstrating its potential for sustainable Li<sup>+</sup> recovery from complex salt-lake brines. This work provides a potential reference for material design toward the sustainable lithium recovery from the Baqiancuo salt-lake region.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"83 ","pages":"Article 109647"},"PeriodicalIF":6.7,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146190631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cation exchange resin as a superior pretreatment for synchronous floc disintegration and enhanced acidogenesis of chemically enhanced primary sludge 阳离子交换树脂作为化学强化初级污泥同步絮凝分解和强化酸生成的优良预处理

IF 6.7 2区工程技术

Journal of water process engineering Pub Date : 2026-03-01 Epub Date: 2026-02-02 DOI: 10.1016/j.jwpe.2026.109572

Sihuan Lai , Yuan Yang , Ke Zhou , Jinbao Zhang , Qingkai Liang , Xiaohong Dang , Qian Li

{"title":"Cation exchange resin as a superior pretreatment for synchronous floc disintegration and enhanced acidogenesis of chemically enhanced primary sludge","authors":"Sihuan Lai , Yuan Yang , Ke Zhou , Jinbao Zhang , Qingkai Liang , Xiaohong Dang , Qian Li","doi":"10.1016/j.jwpe.2026.109572","DOIUrl":"10.1016/j.jwpe.2026.109572","url":null,"abstract":"<div><div>The chemically enhanced primary treatment (CEPT) process effectively enriches organic matter in wastewater; however, the dense flocs formed by coagulants limit the hydrolysis efficiency during anaerobic digestion of CEPT sludge. This study systematically investigated and compared the efficacy of four pretreatment methods—pH adjustment, calcium peroxide (CaO₂), free ammonia (FA), and cation exchange resin (CER)—in enhancing the hydrolysis and acidogenesis of FeCl<sub>3</sub>-based CEPT sludge. Results demonstrated that both alkaline conditions (pH = 10) and CER pretreatment most significantly promoted sludge floc disintegration and organic dissolution, increasing the maximum soluble chemical oxygen demand (SCOD) by 72.33% and 87.66%, respectively, over the control. Nevertheless, their performances in volatile fatty acid (VFA) accumulation diverged considerably. CER pretreatment achieved the highest VFA yield (1567.52 mg/L), representing a 100.22% increase compared to the control, whereas FA severely suppressed VFA production due to its inhibition on acidogenic microorganisms. Mechanistic analysis revealed that CER removes Fe<sup>3+</sup> via ion exchange, thereby disrupting the Fe-PO₄<sup>3−</sup>-organic network that stabilizes sludge flocs. This action concurrently enhanced phosphorus release and organic dissolution, while also stabilizing the system pH to provide a favorable microenvironment for subsequent acidogenesis. This work confirms CER as a highly effective pretreatment strategy for synchronously disintegrating CEPT sludge and promoting acidogenesis, offering a promising technical pathway and theoretical foundation for directional resource recovery from CEPT sludge.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"83 ","pages":"Article 109572"},"PeriodicalIF":6.7,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146190676","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Inhibition mechanism of micro-nano bubbles on green algae in bloom water: A case of Chlorella pyrenoidosa 微纳气泡对绿藻水华的抑制机理——以核核小球藻为例

IF 6.7 2区工程技术

Journal of water process engineering Pub Date : 2026-03-01 Epub Date: 2026-02-02 DOI: 10.1016/j.jwpe.2026.109637

Xinrui Yu , Tianzhi Wang , Zhitao Li , Hongkui Zhang , Yajie Xu , Soon-Thiam Khu

{"title":"Inhibition mechanism of micro-nano bubbles on green algae in bloom water: A case of Chlorella pyrenoidosa","authors":"Xinrui Yu , Tianzhi Wang , Zhitao Li , Hongkui Zhang , Yajie Xu , Soon-Thiam Khu","doi":"10.1016/j.jwpe.2026.109637","DOIUrl":"10.1016/j.jwpe.2026.109637","url":null,"abstract":"<div><div>Conventional methods for controlling harmful algal blooms (HABs) are often costly, cause secondary pollution, and risk non-target toxicity. To address these issues, this study presents a green alternative using micro-nano bubbles (MNBs) from air, N₂, and O₃ to treat <em>Chlorella pyrenoidosa (C. pyrenoidosa)</em>. All three gas sources exhibit a potent and persistent inhibitory effect over 120 h, with the inhibition rate increasing progressively with extended treatment time. After 40 min of treatment, the average inhibition rate reached 71.07%, peaking at 81.10% for O₃ MNBs. The mechanism involves bubble collapse (415–811 nm), generating shear stress that cause shrinkage, rupture, and even fragmentation of algal cells. Simultaneously, the negatively charged bubble surfaces (−15.58 to −12.35 mV) facilitate electron transfer upon collapse, producing reactive oxygen species (ROS) such as ·OH, H₂O₂, and ·O₂<sup>−</sup>. These ROS induce oxidative stress, elevating superoxide dismutase (88.21%) and catalase (113.09%) activities, and promote lipid peroxidation, indicated by a 66.67% rise in malondialdehyde content. Chlorophyll a and b also decreased by 18.99% and 44.59%, impairing light-trapping capacity. These findings demonstrate the effective algal inhibitory capability of MNBs and reveal a synergistic physiochemical mechanism, supporting their potential application in treating algal-bloomed waters.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"83 ","pages":"Article 109637"},"PeriodicalIF":6.7,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146190679","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effective remediation of refractory tank-washing wastewaters by combined anodic oxidation and biotreatment 阳极氧化与生物处理相结合对难处理洗槽废水的有效修复

IF 6.7 2区工程技术

Journal of water process engineering Pub Date : 2026-03-01 Epub Date: 2026-02-21 DOI: 10.1016/j.jwpe.2026.109768

Emanuele Oddo , Simone Gelosa, Luca Magagnin, Marco Derudi

{"title":"Effective remediation of refractory tank-washing wastewaters by combined anodic oxidation and biotreatment","authors":"Emanuele Oddo , Simone Gelosa, Luca Magagnin, Marco Derudi","doi":"10.1016/j.jwpe.2026.109768","DOIUrl":"10.1016/j.jwpe.2026.109768","url":null,"abstract":"<div><div>The combination of anodic oxidation and bioremediation is an effective route for the treatment of recalcitrant effluents with limited energy consumption. The aim of the present work was the development and use of a combined process (anodic oxidation plus bioremediation) to an industrial tank-washing effluent. The electro-treatment has been studied by varying the anode material as well as operating conditions (mixing, electrolyte type and concentration, current density, and treatment time) to assess COD, pH, and biodegradability evolution during the electrochemical treatment. Anodic oxidation can provide a maximum COD removal of 30% for the optimal configuration (37.5 mA cm<sup>−2</sup>, 120 min and 20 g L<sup>−1</sup> Na<sub>2</sub>SO<sub>4</sub>) along with an increase of BOD<sub>5</sub>/COD from 0.07 to 0.53, with a limited power consumption under 10 kWh kg<sub>COD</sub><sup>−1</sup>. The pre-treated effluent was subjected to bioremediation for a maximum of 12 days, achieving an overall COD reduction of 85% in 8 days of biotreatment. While surfactants were essentially unaffected during the anodic oxidation, they were reduced significantly during biological treatment. It was shown that a final step based on anodic oxidation (75 mA cm<sup>−2</sup>, 240 min) allowed to reach 97% removal.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"84 ","pages":"Article 109768"},"PeriodicalIF":6.7,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147387106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Performance stability of partial nitritation/anammox process in treating food waste digestate: NOB inhibition and microbial interactions 部分硝化/厌氧氨氧化工艺处理食物垃圾的性能稳定性：NOB抑制和微生物相互作用

IF 6.7 2区工程技术

Journal of water process engineering Pub Date : 2026-03-01 Epub Date: 2026-02-19 DOI: 10.1016/j.jwpe.2026.109727

Xuanhui Lv , Yunzhi Qian , Cunye Li , Jie Pan , Xiaoliang Fan , Yonghao Zhu , Chenshun Lu , Shilong He

{"title":"Performance stability of partial nitritation/anammox process in treating food waste digestate: NOB inhibition and microbial interactions","authors":"Xuanhui Lv , Yunzhi Qian , Cunye Li , Jie Pan , Xiaoliang Fan , Yonghao Zhu , Chenshun Lu , Shilong He","doi":"10.1016/j.jwpe.2026.109727","DOIUrl":"10.1016/j.jwpe.2026.109727","url":null,"abstract":"<div><div>Disruption of microbial community stability induced by organic matter presents key challenges in applying the anammox process to treat food waste digestion (FWD). In this study, the proliferation of nitrite-oxidizing bacteria (NOB) led to the collapse of the partial nitritation/anammox (PN/A) process, resulting in a reduction of nitrogen removal efficiency (NRE) to 21.6% in the treatment of FWD. Treatment with in-situ free ammonia (15–20 mg/L) and ex-situ free nitrite acid (10 μg/L) slightly inhibited the activity of NOB during the first 8 days. However, NOB rapidly exhibited adaptive tolerance to the two types inhibition, accompanied by a decrease in anammox activity. qPCR results confirm that the decrease in ammonia-oxidizing bacteria (AnAOB) and the increase in denitrifying bacteria (DB) are another key factors influencing the stability of PN/A process. The anaerobic cultivation mode induced inhibition of NOB, with the abundance of <em>Nitrospira</em> decreasing to 0.09%. Simultaneously, AnAOB underwent significant species evolution: <em>Ca</em>. Brocadia increased from 0.15% to 5.76%, leading to enhanced AnAOB (including <em>Ca</em>. <em>Kuenenia</em>) utilization of NO<sub>2</sub><sup>−</sup>-N. This study provides valuable insights into overcoming the challenges associated with NOB and heterotrophic bacterial proliferation during FWD treatment in the PN/A process.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"84 ","pages":"Article 109727"},"PeriodicalIF":6.7,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147387115","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mechanisms of enhanced pollutant removal and microbial adaptation in stormwater infiltration systems with construction wastes as key fillers 以建筑垃圾为主要填料的雨水渗透系统中增强污染物去除和微生物适应的机制

IF 6.7 2区工程技术

Journal of water process engineering Pub Date : 2026-03-01 Epub Date: 2026-02-18 DOI: 10.1016/j.jwpe.2026.109757

Xiaoran Zhang , Delong Sun , Shimin Guo , Wenfei Jiao , Huakang Zhang , Ziyang Zhang , Haiyan Li

{"title":"Mechanisms of enhanced pollutant removal and microbial adaptation in stormwater infiltration systems with construction wastes as key fillers","authors":"Xiaoran Zhang , Delong Sun , Shimin Guo , Wenfei Jiao , Huakang Zhang , Ziyang Zhang , Haiyan Li","doi":"10.1016/j.jwpe.2026.109757","DOIUrl":"10.1016/j.jwpe.2026.109757","url":null,"abstract":"<div><div>Urbanization has increased impervious surfaces, leading to greater stormwater runoff and associated pollution. This has driven the search for economical and effective materials to remove these contaminants. This study investigated the decontamination performance and the microbial characteristics of a system using two types of construction wastes B and J. Chemical oxygen demand (COD), total phosphorus (TP), ammonium nitrogen (NH<sub>4</sub><sup>+</sup>-N), total nitrogen (TN) and heavy metals (Cu, Mn, Zn) were measured in the effluent according to different resident times. The results showed at a hydraulic retention time of 8 h, the removal of pollutants was effective and stable. Construction waste materials B and J achieved average removal rates of over 81.0% for COD, 90.0% for TP, 80.0% for NH<sub>4</sub><sup>+</sup>-N, and 90.0% for TN, indicating a certain feasibility and practicality of the filter media. Nutrient and heavy metals overall removal effect in-creased with increasing the contacting time. Extended hydraulic retention time increased Cu<sup>2+</sup> and Zn<sup>2+</sup> removal to >80%, while Mn transitioned from leaching to removal (up to 70.1%) at 8-h hydraulic retention time via pH-mediated mechanisms. An anaerobic environment inside the column fostered the formation of denitrifying dominant bacteria (i.e. <em>Enterobacter</em> and <em>Azospirillum</em>). Longer contact time further promoted their growth, which was crucial for removing TN and TP in the system. The system could easily form an anoxic environment at a long retention time. Overall, pollutant removal by the two materials was comparable, with retention time being the key determinant. Construction wastes thus offer an effective and sustainable adsorption solution.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"84 ","pages":"Article 109757"},"PeriodicalIF":6.7,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147386563","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Desludging frequency of septic tanks based on assessment of sludge accumulation and generation rates in septic tanks and treatment plants 根据对化粪池和处理厂的污泥积累和生成率的评估，确定化粪池的除泥频率

IF 6.7 2区工程技术

Journal of water process engineering Pub Date : 2026-03-01 Epub Date: 2026-01-23 DOI: 10.1016/j.jwpe.2026.109546

Alex Kwong Jun Kiu , Ngie Hing Wong , Hong Kiat Huang , Yali Li , Fuping Li , Diah Agustina Puspitasari , Yong Wang , Jaka Sunarso

{"title":"Desludging frequency of septic tanks based on assessment of sludge accumulation and generation rates in septic tanks and treatment plants","authors":"Alex Kwong Jun Kiu , Ngie Hing Wong , Hong Kiat Huang , Yali Li , Fuping Li , Diah Agustina Puspitasari , Yong Wang , Jaka Sunarso","doi":"10.1016/j.jwpe.2026.109546","DOIUrl":"10.1016/j.jwpe.2026.109546","url":null,"abstract":"<div><div>Septic tanks require periodic desludging and further treatment at the Septic Sludge Treatment Plant (SSTP). However, the relationship between desludging frequency (DF), which is influenced by the sludge accumulation rate (SAR) in the sludge accumulation rate (SAR) inside different types of septic tanks, and the sludge generation rate (SGR) at the SSTP remains unclear. This work presents a systematic analytical approach for predicting and validating DF by simultaneously investigating the SAR and SGR from septic tanks and the SSTP, respectively. Seventy-eight (78) septic tanks, i.e., fiberglass (FG, 10), plastic (PL, 44), and reinforced concrete (RC, 24), were evaluated for their SAR based on serving population equivalent (PE) and sludge depth profiles over the years. No significant difference in SAR was found across these tanks, with an average SAR of 0.043 m<sup>3</sup> PE<sup>-1</sup> yr<sup>-1</sup>. To verify this, the SGR was found to range from 1.251 to 1.933 metric tons d<sup>-1</sup> for the coarse (<em>cs</em>), fine (<em>fs</em>), and rotary drum screenings (<em>rds</em>) at the SSTP, resulting in a similar average SAR (0.044 m<sup>3</sup> PE<sup>-1</sup> yr<sup>-1</sup>). Consequently, a standardized DF of every three years is recommended for 6-PE septic tanks. This work provides insight into SAR (septic tanks) and SGR (SSTP), offering a more realistic estimate of DF to enhance their design and operational guidelines.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"83 ","pages":"Article 109546"},"PeriodicalIF":6.7,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146037146","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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