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Decontamination efficiency and root structure change in the plant-intercropping model in vertical-flowconstructed wetlands

Yonghua CHEN, Xiaofu WU, Mingli CHEN, Kelin LI, Jing PENG, Peng ZHAN

《环境科学与工程前沿（英文）》 2013年第7卷第6期页码 906-912 doi: 10.1007/s11783-013-0579-z

摘要： Subtropical climatic conditions can contribute to the death of the aerial parts of constructed wetland plants in winter. This presents a barrier to the widespread application of constructed wetland and is an issue that urgently needs to be solved. Three contrasting experiments, the plant-intercropping model (A), the warm-seasonal plant model (B), and the non-plant model (C), were studied in terms of their efficiency in removing pollutants, and the change in root structure of plants in the plant-intercropping model within the vertical-flow constructed wetlands. The results indicate that model A was able to solve the aforementioned problem. Overall, average removal rates of three pollutants (COD , total nitrogen (TN) and total phosphorous (TP)) using model A were significantly higher than those obtained using models B and C ( <0.01). Moreover, no significant differences in removal rates of the three pollutants were detected between A and B during the higher temperature part of the year ( >0.05). Conversely, removal rates of the three pollutants were found to be significantly higher using model A than those observed using model B during the lower temperature part of the year ( <0.01). Furthermore, the morphologies and internal structures of plant roots further demonstrate that numerous white roots, whose distribution in soil was generally shallow, extend further under model A. The roots of these aquatic plants have an aerenchyma structure composed of parenchyma cells, therefore, roots of the cold-seasonal plants with major growth advantages used in A were capable of creating a more favorable vertical-flow constructed wetlands media-microenvironment. In conclusion, the plant-intercropping model (A) is more suitable for use in the cold environment experienced by constructed wetland during winter.

关键词： vertical-flow constructed wetlands plant intercropping model warm seasonal plant model

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Removal, distribution and plant uptake of perfluorooctane sulfonate (PFOS) in a simulated constructed

Weichuan Qiao, Rong Li, Tianhao Tang, Achuo Anitta Zuh

《环境科学与工程前沿（英文）》 2021年第15卷第2期 doi: 10.1007/s11783-020-1312-3

摘要： Abstract • PFOS was removed by soil adsorption and plant uptake in the VFCW. • Uptake of PFOS by E. crassipes was more than that of C. alternifolius. • PFOS in wastewater can inhibit the removal of nutrients. • Dosing with PFOS changed the soil microbial community in the VFCW. A vertical-flow constructed wetland (VFCW) was used to treat simulated domestic sewage containing perfluorooctane sulfonate (PFOS). The removal rate of PFOS in the domestic sewage was 93%–98%, through soil adsorption and plant uptake, suggesting that VFCWs can remove PFOS efficiently from wastewater. The removal of PFOS in the VFCW was dependent on soil adsorption and plant uptake; moreover, the percentage of soil adsorption was 61%–89%, and was higher than that of the plants uptake (5%–31%). The absorption capacity of Eichhornia crassipes (E. crassipes) (1186.71 mg/kg) was higher than that of Cyperus alternifolius (C. alternifolius) (162.77 mg/kg) under 10 mg/L PFOS, and the transfer factor of PFOS in E. crassipes and C. alternifolius was 0.04 and 0.58, respectively, indicating that PFOS is not easily translocated to leaves from roots of wetland plants; moreover, uptake of PFOS by E. crassipes was more than that of C. alternifolius because the biomass of E. crassipes was more than that of C. alternifolius and the roots of E. crassipes can take up PFOS directly from wastewater while C. alternifolius needs to do so via its roots in the soil. The concentration of 10 mg/L PFOS had an obvious inhibitory effect on the removal rate of total nitrogen, total phosphorus, chemical oxygen demand, and ammonia nitrogen in the VFCW, which decreased by 15%, 10%, 10% and 12%, respectively. Dosing with PFOS in the wastewater reduced the bacterial richness but increased the diversity in soil because PFOS stimulated the growth of PFOS-tolerant strains.

关键词： Vertical-flow constructed wetland Perfluorooctane sulfonate Wetland plants Soil microbial community Effect Speciality: Wetlands Transformation Organic pollutants Phytoremediation Exposure assessment Sewage

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Removal of arsenic by pilot-scale vertical flow constructed wetland

《环境科学与工程前沿（英文）》 2021年第15卷第4期 doi: 10.1007/s11783-021-1435-1

摘要：

• VFCWs are effective for the treatment of arsenic-containing wastewater.

关键词： Constructed wetland Arsenic Removal efficiency Mass balance

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人工湿地强化运行措施研究

鄢璐,王世和,钟秋爽,黄娟

《中国工程科学》 2007年第9卷第10期页码 88-90

摘要：

人工湿地是一项水质净化效果好,建造、运行费用低的生态污水处理技术。目前缺少对湿地强化条件下净化特性和氧状态的研究，制约了湿地净化效率的提高。研究了串联型人工湿地、美人蕉湿地曝气、湿地多点进水和湿地出水回流对人工湿地氧环境的改善及净化效果；结果表明湿地出水回流净化效果最明显。

关键词：人工湿地串联曝气多点进水回流

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Pilot-scale studies of domestic wastewater treatment by typical constructed wetlands and their greenhouse

Chaoxiang LIU, Kaiqin XU, Ryuhei INAMORI, Yuhei INAMORI, Yoshitaka EBIE, Jie LIAO,

《环境科学与工程前沿（英文）》 2009年第3卷第4期页码 477-482 doi: 10.1007/s11783-009-0155-8

摘要： Three typical constructed wetlands (CWs) including Vertical Flow (VF), Free Water Surface (FWS), and Subsurface Flow (SF), and combined VF-SF-FWS constructed wetlands were investigated for the treatment of domestic wastewater with low C/N ratio. The performance of nutrient removal and the characteristics of greenhouse gas emissions, such as CH and NO, from these CWs were compared. The results indicated that the four types of CWs had high removal efficiencies for organic matter and suspended solid (SS). The combined wetland also showed a comparatively good performance for nitrogen and phosphorus removal, and the removal efficiencies for total nitrogen (TN) and total phosphorus (TP) were 81.3% and 84.5%, respectively. The combined CWs had a comparative lower global warming potential. The FWS CW had the highest tendency to emit CH and led to a higher global warming potential among the four types of CWs, which was about 586 mg CO/m·h.

关键词： global warming potential methane nitrous oxide low C/N ratio nitrogen phosphorus

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Translocation and biotoxicity of metal (oxide) nanoparticles in the wetland-plant system

《环境科学与工程前沿（英文）》 2021年第15卷第6期 doi: 10.1007/s11783-021-1432-4

摘要：

• Aquatic plants are more likely to absorb TiO₂ NPs that are beneficial to them.

关键词： Constructed wetlands Aquatic plants Nanoparticles Physiological activity Biomass

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Relationships between loading rates and nitrogen removal effectiveness in subsurface flow constructedwetlands

ZHANG Rongshe, LI Guanghe, ZHANG Xu, ZHOU Qi

《环境科学与工程前沿（英文）》 2008年第2卷第1期页码 89-93 doi: 10.1007/s11783-008-0002-3

摘要： Nitrogen removal of wetlands under 40 different inflow loadings were studied in the field during 15 months. The removal efficiency of four different sets of beds, namely the reed bed, the Zizania caduciflor bed, the mixing planting bed, and the control bed were studied. The outflow loading and total nitrogen (TN) removal rate of these beds under different inflow loadings and pollution loadings were investigated. The inflow loadings of 4 sub-surface flow systems (SFS) ranged from 400 to 8000 mg·(m·d), while outflow loadings were less than 7000 mg·(m·d). The results showed that the inflow and outflow loading of TN removal rate in SFS presented an obvious linear relationship. The optical inflow loading to run the system was between 2000 to 4000 mg·(m·d). Average removal rate was between 1062 and 2007 mg·(m·d). SFS with plant had a better removal rate than the control. TN removal rates of the reed and Zizania caduciflora bed were 63% and 27% higher than the control bed, respectively. The results regarding the TN absorption of plants indicated that the absorption amount was very limited, less than 5% of the total removal. It proved that plants clearly increase TN removal rates by improving the water flow, and increasing the biomass, as well as activities of microorganisms around the roots. The research provided a perspective for understanding the TN removal mechanism and design for SFS.

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Study of two-phase flow regime identification in horizontal tube bundles under vertical upward cross-flow

HUANG Xinghua, WANG Li, JIA Feng

《能源前沿（英文）》 2008年第2卷第3期页码 333-338 doi: 10.1007/s11708-008-0043-0

摘要： A wavelet-transform based approach for flow regime identification in horizontal tube bundles under vertical upward cross-flow condition was presented. Tests on two-phase flow pattern of R134a were conducted under low mass velocity and flow boiling conditions over ranges of mass flux 4–25 kg/ms, vapor quality 0.02–0.90. Time series of differential pressure fluctuations were measured and analyzed with discrete wavelet transform. Different time-scale characteristics in bubbly flow, churn flow and annular flow were analyzed. The wavelet energy distributions over scales were found to be appropriate for flow regime identification. Based on the wavelet energy distribution over characteristic scales, a criterion of flow regime identification was proposed. The comparison with experiment results show that it is feasible to use the discrete wavelet transform as the tool of flow regime identification in horizontal tube bundles under vertical upward cross-flow condition.

关键词： two-phase discrete appropriate wavelet-transform criterion

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基于GA－BP网络的人工湿地污水净化效果研究

黄娟,王世和,雒维国,钱卫一,鄢璐

《中国工程科学》 2007年第9卷第2期页码 79-83

摘要：

人工湿地作为污水处理领域的一种新型生态技术，逐渐得到应用并倍受关注。人工湿地污水净化过程呈多参数影响的复杂非线性状态，采用传统的数学方法难以建立准确的数学模型并进行多因素分析，也无法精确定出湿地系统最佳运行工况。基于大量可靠的试验数据，首次采用遗传神经网络方法模拟湿地除污系统，详细论述了网络拓扑结构优化和训练数据预处理等关键问题，建立了可靠的GA－BP模型，并采用该模型仿真湿地系统正交试验，依据正交试验结果对影响因素进行分级，确定了最佳运行工况，并在此基础上有针对性地提出可行的强化除污措施。

关键词：人工湿地污水净化 GA-BP网络正交试验

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人工湿地进行废水生态化处理的钢铁园区水网络优化 Article

张凯丽,Stephen M. Malone,Bert Bras,Marc Weissburg, 赵月红,曹宏斌

《工程（英文）》 2018年第4卷第4期页码 567-573 doi: 10.1016/j.eng.2018.07.007

摘要：

传统工业优化往往仅限定在工业系统内，限制了优化的潜力。适当扩展系统的边界，将有助于对复杂系统进行更为精确的分析，从而提高工业系统的效率和盈利能力。自然生态系统在物质和能源短缺的情况下，已经进化了数十亿年，生态学家发展了众多的分析工具和指标来表征生态系统的基本运行原理。这些原理为克服传统工业优化技术的瓶颈提供了新的解决方案。具体地说，基于生态原理，通过模仿生态系统中发现的基本功能角色，工业系统可以实现类生态系统的高效组织运行。本文对中国典型钢铁企业的水网络分别采用传统优化模型与基于生态原理驱动的改进模型进行了优化。工业实例研究表明，采用传统优化模型的水网络优化后，可实现新水消耗、废水排放、综合用水成本分别降低23%、29% 和20%；采用基于生态原理驱动的改进模型，水网络优化后，则可使新水用量和综合用水成本进一步降低21%和25%，并实现废水零排放。研究结果表明，基于生态原理驱动的改进优化模型更有利于实现工业系统的可持续发展。

关键词：植物修复废水钢铁生产优化

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湿地芦苇根系微生物群落组成与环境应用 Review

王东麟, 柏耀辉, 曲久辉

《工程（英文）》 2022年第9卷第2期页码 42-50 doi: 10.1016/j.eng.2021.05.016

摘要：

芦苇是自然界广泛存在的湿地植物。在人工湿地中，约15.5%的种植植物是芦苇，其在废水水质净化中起到重要的作用。尽管如此，对芦苇根系微生物群落的基本组成及每一类微生物在污染物去除中的作用仍不清晰。本文总结了已有对芦苇根系微生物群落（包括细菌、古菌及真菌）在生态及生化方面的研究。基于下一代测序，对不同环境条件下的微生物群落组成进行了分析。此外，利用培养方法进一步研究了微生物群落的功能特征，如铁的固定、有机物的降解、营养元素的转化等。芦苇根系微生物群落独特的结构和功能受芦苇种类及盐度等环境因素的高度影响。基于现有对芦苇根系微生物群落的研究，我们建议在人工湿地中应用和强化合成微生物群落和铁锰氧化物基质，以提高湿地的水净化性能。

关键词：芦苇根系微生物微生物群落组成污染修复人工湿地

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Effect of wetland plant fermentation broth on nitrogen removal and bioenergy generation in constructed

《环境科学与工程前沿（英文）》 2022年第16卷第12期 doi: 10.1007/s11783-022-1592-x

摘要：

● Fermentation broth facilitates N removal and energy yields in tertiary CW-MFC.

关键词： Constructed wetland Microbial fuel cell Nitrogen removal Bioenergy generation Carbon source

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The effect of texture and irrigation on the soil moisture vertical-temporal variability in an urban artificial

Xiaofeng ZHANG,Xu ZHANG,Guanghe LI

《环境科学与工程前沿（英文）》 2015年第9卷第2期页码 269-278 doi: 10.1007/s11783-014-0672-y

摘要： Soil moisture variability in natural landscapes has been widely studied; however, less attention has been paid to its variability in the urban landscapes with respect to the possible influence of texture stratification and irrigation management. Therefore, a case study was carried out in the Beijing Olympic Forest Park to continuously monitor the soil in three typical profiles from 26 April to 11 November 2010. The texture stratification significantly affected the vertical distribution of moisture in the non-irrigated profile where moisture was mostly below field capacity. In the profile where irrigation was sufficient to maintain moisture above field capacity, gravity flow led to increased moisture with depth and thus eliminated the influence of texture. In the non-irrigated sites, the upper layer (above 80 cm) exhibited long-term moisture persistence with the time scale approximating the average rainfall interval. However, a coarse-textured layer weakened the influence of rainfall, and a fine-textured layer weakened the influence of evapotranspiration, both of which resulted in random noise-like moisture series in the deeper layers. At the irrigated site, frequent irrigation neutralized the influence of evapotranspiration in the upper layer (above 60 cm) and overshadowed the influence of rainfall in the deeper layer. As a result, the moisture level in the upper layer also behaved as a random noise-like series; whereas due to deep transpiration, the moisture of the deep layer had a persistence time-scale longer than a month, consistent with characteristic time-scales found for deep transpiration.

关键词： moisture vertical distribution moisture temporal variation texture stratification irrigation meteorological forcing urban landscape

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Characteristics of pollutants behavior in a stormwater constructed wetland during dry days

Jianghua YU, Kisoo PARK, Youngchul KIM

《环境科学与工程前沿（英文）》 2012年第6卷第5期页码 649-657 doi: 10.1007/s11783-012-0426-7

摘要： A stormwater wetland treating non-point source pollution (NPS) from a 64 ha agricultural watershed was monitored over a period of five months. The results indicated that pH and dissolved oxygen (DO) were increased in the wetland due to the algal growth. The highest total suspended solids (TSS) concentration was observed in the aeration pond due to the resuspension of solids, decreased in the wetland. The respective decreases in total nitrogen (TN) and total kjeldahl nitrogen (TKN) were 15.9% and 28.7% on passing through the wetland. The nitrate and ammonia were increased by 45.4% and decreased by 79.9%, respectively. These variations provided strong evidence for the existence of nitrification. The total phosphorus (TP) and phosphate had respective reductions of 52.3% and 58.2% over the wetland. The total chemical oxygen demand (TCOD) and soluble chemical oxygen demand (SCOD) were also decreased. Generally, the TN, TP and phosphate removal efficiencies were positive. These positive removal efficiencies were mainly due to microbial activities, uptake by plants, and chemical precipitation at high pH. Negative removal efficiencies can be caused by continuous rainfall activities, with short antecedent dry days (ADDs) and unstable hydraulic conditions, some other biogeochemical transformations and algal growth also being important parameters.

关键词： constructed stormwater wetland dry days nitrification and denitrification pollutants characteristic

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Restoration of hyper-eutrophic water with a modularized and air adjustable constructed submerged plant

Jinzhong LI, Xueju LI, Shujuan SUN, Xuegong LIU, Suiliang HUANG

《环境科学与工程前沿（英文）》 2011年第5卷第4期页码 573-584 doi: 10.1007/s11783-011-0363-x

摘要： A modularized and air adjustable constructed submerged plant bed (CSPB) which can be used to restore the eutrophic water is introduced in this paper. This plant bed helps hydrophyte grow under poor conditions such as frequently changed water depth, impaired water transparency, algae bloom and substantial duckweed in summer, which are not naturally suitable for growing hydrophyte. This pilot study in Waihuan River of Tianjin, China, revealed that reduction of Chemical Oxygen Demand (COD), Total Nitrogen (TN) and Total Phosphorus (TP) by the use of CSPB could be reached 30%–35%, 35%–40%, 30%–40% respectively in the growing season (from March to October) and 5%–10%, 5%–15%, 7%–20% respectively in the winter (from November to February) when the detention time was 6 d. The relationships between the concentration of COD, TN, TP and the detention time fit the first-order kinetic equation well and the coefficients of determination ( ) were all above 0.9. The attenuation coefficients k of the kinetic equation were a function of the water temperature. When the water temperature was quite low or quite high, was not significantly changed with increasing or decreasing water temperature. While when the temperature was in a moderate range, an increase or decrease of water temperature would lead to a rapid increase or decrease in .

关键词： modularized and air adjustable constructed submerged plant bed water purification eco-restoration techniques aquatic plants eutrophication

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标题作者时间类型操作

Decontamination efficiency and root structure change in the plant-intercropping model in vertical-flowconstructed wetlands

Yonghua CHEN, Xiaofu WU, Mingli CHEN, Kelin LI, Jing PENG, Peng ZHAN

期刊论文

Removal, distribution and plant uptake of perfluorooctane sulfonate (PFOS) in a simulated constructed

Weichuan Qiao, Rong Li, Tianhao Tang, Achuo Anitta Zuh

期刊论文

Removal of arsenic by pilot-scale vertical flow constructed wetland

期刊论文

人工湿地强化运行措施研究

鄢璐,王世和,钟秋爽,黄娟

期刊论文

Pilot-scale studies of domestic wastewater treatment by typical constructed wetlands and their greenhouse

Chaoxiang LIU, Kaiqin XU, Ryuhei INAMORI, Yuhei INAMORI, Yoshitaka EBIE, Jie LIAO,

期刊论文

Translocation and biotoxicity of metal (oxide) nanoparticles in the wetland-plant system

期刊论文

Relationships between loading rates and nitrogen removal effectiveness in subsurface flow constructedwetlands

ZHANG Rongshe, LI Guanghe, ZHANG Xu, ZHOU Qi

期刊论文

Study of two-phase flow regime identification in horizontal tube bundles under vertical upward cross-flow

HUANG Xinghua, WANG Li, JIA Feng

期刊论文

基于GA－BP网络的人工湿地污水净化效果研究

黄娟,王世和,雒维国,钱卫一,鄢璐

期刊论文

人工湿地进行废水生态化处理的钢铁园区水网络优化

张凯丽,Stephen M. Malone,Bert Bras,Marc Weissburg, 赵月红,曹宏斌

期刊论文

湿地芦苇根系微生物群落组成与环境应用

王东麟, 柏耀辉, 曲久辉

期刊论文

Effect of wetland plant fermentation broth on nitrogen removal and bioenergy generation in constructed

期刊论文

The effect of texture and irrigation on the soil moisture vertical-temporal variability in an urban artificial

Xiaofeng ZHANG,Xu ZHANG,Guanghe LI

期刊论文

Characteristics of pollutants behavior in a stormwater constructed wetland during dry days

Jianghua YU, Kisoo PARK, Youngchul KIM

期刊论文

Restoration of hyper-eutrophic water with a modularized and air adjustable constructed submerged plant

Jinzhong LI, Xueju LI, Shujuan SUN, Xuegong LIU, Suiliang HUANG

期刊论文

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